oldrunner initial import

26 files changed, 7218 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..bf31bb8
--- /dev/null
+++ b/ChangeLog
@@ -0,0 +1,20 @@
+2012-01-31  Frederic Culot  <frederic@culot.org>
+
+	* Fix a display issue which caused part of the game board to be
+	hidden on wide screens.
+
+	* Fix an erroneous check which could lead to an out of bounds
+	access on the curlvl->lay array.
+
+2012-01-06  Frederic Culot  <frederic@culot.org>
+
+	* Fix the sprite enum to avoid indexes past the end of arrays such
+	as with the SP_INVALID element in sprites_init().
+
+2010-07-17  Frederic Culot  <frederic@culot.org>
+
+	* first public release
+
+2010-04-01  Frederic Culot  <frederic@culot.org>
+
+	* beginning of the project
diff --git a/GNUmakefile b/GNUmakefile
new file mode 100644
index 0000000..07ed10c
--- /dev/null
+++ b/GNUmakefile
@@ -0,0 +1,65 @@
+#	$Id: GNUmakefile,v 1.4 2012/01/06 10:13:55 culot Exp $
+
+VERSION=        20120131
+
+PRJ=		$(shell basename `pwd`)
+EXE=		$(PRJ)
+BAK=		$(PRJ)-$(shell date '+%Y%m%d-%H%M').tar.gz
+PKG=		$(PRJ)-$(VERSION).tar.gz
+SRCDIR=		./
+
+CC?=		gcc
+CFLAGS+=	-Wall -DVERSION="\"$(VERSION)\""
+LDFLAGS+=
+LIBS+=
+
+#FDEBUG= 1
+
+ifdef FDEBUG
+CFLAGS+= -g -ggdb -DDEBUG
+endif
+
+SRCS=		$(wildcard $(SRCDIR)/*.c)
+-include config.mk
+OBJ=		$(SRCS:.c=.o)
+
+
+all:	$(EXE)
+
+$(EXE):	$(OBJ)
+	$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)
+
+%.o:	%.c
+	$(CC) $(CFLAGS) -o $@ -c $<
+
+backup:	clean-all
+	@cd .. && tar czvf $(BAK) $(PRJ) >/dev/null && mv $(BAK) $(PRJ)
+	@echo "==> Backup created: $(BAK)"
+
+dist:	clean-all
+	@cd .. && tar -czvf $(PKG) --exclude='CVS' $(PRJ) >/dev/null && mv $(PKG) $(PRJ)
+	@echo "==> Package created: $(PKG)"
+
+clean-all: clean
+	@rm -f config.mk config.h TAGS
+
+clean:
+	@rm -f $(OBJ) $(EXE)
+	@rm -f core
+	@rm -f *.gz
+	@echo "==> Project cleaned"
+
+tags:
+	@etags *.[ch]
+	@echo "==> Tags generated"
+
+count:
+	@wc -l *.[ch]
+
+list-todo:
+	@grep -n XXX *.[ch]
+
+list-targets:
+	@cat GNUmakefile | grep -E ^[^[:space:]\.$$%]+: | cut -d: -f1
+
+.PHONY:	all backup dist clean clean-all tags count list-todo list-targets
diff --git a/README b/README
new file mode 100644
index 0000000..0f5c066
--- /dev/null
+++ b/README
@@ -0,0 +1,21 @@
+Oldrunner is a text-mode remake of the Loadrunner game from Broderbund and
+contains the 150 original game levels. See the manpage for more information.
+
+INSTALL
+  To compile oldrunner, first run the configure script and then compile the 
+  game using 'gmake' or 'make' depending on your system.
+
+LICENSE
+  The game is released under the BSD License. The original game levels are
+  copyright (c)1994 Presage Software Development Co.; all rights reserved.
+
+THANKS
+  Thanks go to:
+
+  * Joshua Neal for the 'lodetool' software which allowed the convertion of
+    the original game levels to human-readable ascii ones.
+
+  * Nicholas Marriott for the tmux configuration script which greatly inspired
+    the configure script distributed with oldrunner.
+
+
diff --git a/TODO b/TODO
new file mode 100644
index 0000000..ce71a4c
--- /dev/null
+++ b/TODO
@@ -0,0 +1,13 @@
+ 
+  oldrunner TODO list
+  -------------------
+
+Here are listed the modifications I should perform on loderunner in future
+releases. Feel free to send me an email/patch (frederic@culot.org) if you
+would like to see a feature added.
+
+
+  *  Add a command-line flag to set game difficulty (acting on FOES_DELAY, BRICK_LATENCY...)
+  *  Add support for high-scores recording
+  *  Allow user to pause the game
+  *  Make it possible to load user-created levels
diff --git a/bricks.c b/bricks.c
new file mode 100644
index 0000000..3060c21
--- /dev/null
+++ b/bricks.c
@@ -0,0 +1,169 @@
+/*  $Id: bricks.c,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "oldrunner.h"
+
+#define BRICK_LATENCY        (OLDRUNNER_TIMEOUT * 4)
+
+enum brick_state {
+  BRICK_SMALL_CRACK,
+  BRICK_LARGE_CRACK,
+  BRICK_BROKEN,
+  BRICK_COMEBACK_LARGE_CRACK,
+  BRICK_COMEBACK_SMALL_CRACK,
+  BRICK_REBUILT,
+  BRICK_STATES
+};
+
+struct brick {
+  enum brick_state    state;
+  struct timer        timer;
+  struct coord        pos;
+  SLIST_ENTRY(brick)  bricksp;
+};
+
+SLIST_HEAD(, brick)  bricks;
+
+void
+bricks_init (void)
+{
+  SLIST_INIT (&bricks);
+}
+
+void
+bricks_free (void)
+{
+  while (!SLIST_EMPTY (&bricks))
+    {
+      struct brick *b;
+      
+      b = SLIST_FIRST (&bricks);
+      SLIST_REMOVE_HEAD (&bricks, bricksp);
+      xfree (b);
+    }
+}
+
+void
+bricks_break (const struct coord *pos)
+{
+  struct brick *b;
+
+  b = xmalloc (sizeof *b);
+  coord_set_yx (&b->pos, pos->y, pos->x);
+  b->state = BRICK_SMALL_CRACK;
+  timer_start (&b->timer);
+  SLIST_INSERT_HEAD (&bricks, b, bricksp);
+}
+
+static void
+draw_brick (const struct coord *pos, enum brick_state state)
+{
+  switch (state)
+    {
+    case BRICK_SMALL_CRACK:
+    case BRICK_COMEBACK_SMALL_CRACK:
+      gfx_show_sprite (SP_BRICK_SCRACK, pos);
+      break;
+    case BRICK_LARGE_CRACK:
+    case BRICK_COMEBACK_LARGE_CRACK:
+      gfx_show_sprite (SP_BRICK_LCRACK, pos);
+      break;
+    case BRICK_BROKEN:
+      if (hero_at_pos (pos))
+        gfx_show_sprite (SP_HERO, pos);
+      else if (foes_at_pos (pos))
+        gfx_show_sprite (SP_FOE, pos);
+      else
+        gfx_show_sprite (SP_BRICK_BROKEN, pos);
+      break;
+    case BRICK_REBUILT:
+      gfx_show_sprite (SP_BRICK, pos);
+      break;
+    default:
+      return;
+      /* NOTREACHED */
+    }
+}
+
+void
+bricks_draw (void)
+{
+  struct brick *b;
+  
+  SLIST_FOREACH (b, &bricks, bricksp)
+    draw_brick (&b->pos, b->state);
+}
+
+unsigned
+bricks_broken_at (const struct coord *pos)
+{
+  struct brick *b;
+  
+  SLIST_FOREACH (b, &bricks, bricksp)
+    {
+      if (b->state == BRICK_BROKEN && coord_equal (&b->pos, pos))
+        return 1;
+    }
+  
+  return 0;
+}
+
+void
+bricks_update (void)
+{
+  struct brick *b;
+  struct timer now;
+
+  timer_get_time (&now);
+  SLIST_FOREACH (b, &bricks, bricksp)
+    {
+      double difftot;
+
+      difftot = timer_diff (&now, &b->timer);
+      if (difftot > BRICK_LATENCY)
+        {
+          timer_set (&now, &b->timer);
+          b->state++;
+          if (b->state == BRICK_BROKEN)
+            {
+              hero_dig_done ();
+              timer_add (&b->timer, BRICK_COMEBACK_TIME);
+            }
+          else if (b->state > BRICK_REBUILT)
+            {
+              foes_wallup_at (&b->pos);
+              if (!hero_wallup_at (&b->pos))
+                SLIST_REMOVE (&bricks, b, brick, bricksp);
+            }
+        }
+    }
+}
diff --git a/cfg.h b/cfg.h
new file mode 100644
index 0000000..79d64a1
--- /dev/null
+++ b/cfg.h
@@ -0,0 +1,61 @@
+/*  $Id: cfg.h,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define CTRLVAL                 0x1F
+#define CTRL(x)                 ((x) & CTRLVAL)
+
+/*
+ * User-definable variables are defined below.
+ * Update configuration to suit your needs and then recompile.
+ */
+
+/* User keys. */
+#define ORKEY_MOVE_RIGHT     'l'
+#define ORKEY_MOVE_LEFT      'h'
+#define ORKEY_MOVE_DOWN      'j'
+#define ORKEY_MOVE_UP        'k'
+#define ORKEY_DIG_LEFT       's'
+#define ORKEY_DIG_RIGHT      'd'
+#define ORKEY_LEVEL_NEXT     CTRL('n')
+#define ORKEY_LEVEL_PREV     CTRL('p')
+#define ORKEY_SUICIDE        CTRL('g')
+#define ORKEY_EXIT           CTRL('d')
+
+/* To set game speed (timeout in microseconds). */
+#define OLDRUNNER_TIMEOUT    80000
+
+/*
+ * If game levels files are installed in a system-wide location, set the
+ * LEVELS_PATH symbol to the appropriate path, such as:
+ *
+ *   #define LEVELS_PATH     "/usr/local/share/games/oldrunner/levels"
+ */
diff --git a/compat.h b/compat.h
new file mode 100644
index 0000000..f8aec7f
--- /dev/null
+++ b/compat.h
@@ -0,0 +1,56 @@
+/*  $Id: compat.h,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef COMPAT_H
+#define COMPAT_H
+
+#ifdef HAVE_QUEUE_H
+#  include <sys/queue.h>
+#else
+#  include "compat/queue.h"
+#endif
+
+#ifndef HAVE_BZERO
+#  define bzero(buf, len) memset ((buf), 0, (len));
+#endif
+
+#ifndef HAVE_STRTONUM
+/* strtonum.c */
+long long	 strtonum (const char *, long long, long long, const char **);
+#endif
+
+#ifndef HAVE_FGETLN
+/* fgetln.c */
+char   *fgetln (FILE *, size_t *);
+#endif
+
+#endif /* COMPAT_H */
diff --git a/compat/fgetln.c b/compat/fgetln.c
new file mode 100644
index 0000000..432677b
--- /dev/null
+++ b/compat/fgetln.c
@@ -0,0 +1,86 @@
+/*	$NetBSD: fgetln.c,v 1.3 2007/08/07 02:06:58 lukem Exp $	*/
+
+/*-
+ * Copyright (c) 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+char *
+fgetln(fp, len)
+	FILE *fp;
+	size_t *len;
+{
+	static char *buf = NULL;
+	static size_t bufsiz = 0;
+	char *ptr;
+
+
+	if (buf == NULL) {
+		bufsiz = BUFSIZ;
+		if ((buf = malloc(bufsiz)) == NULL)
+			return NULL;
+	}
+
+	if (fgets(buf, bufsiz, fp) == NULL)
+		return NULL;
+
+	*len = 0;
+	while ((ptr = strchr(&buf[*len], '\n')) == NULL) {
+		size_t nbufsiz = bufsiz + BUFSIZ;
+		char *nbuf = realloc(buf, nbufsiz);
+
+		if (nbuf == NULL) {
+			int oerrno = errno;
+			free(buf);
+			errno = oerrno;
+			buf = NULL;
+			return NULL;
+		} else
+			buf = nbuf;
+
+		*len = bufsiz;
+		if (fgets(&buf[bufsiz], BUFSIZ, fp) == NULL)
+			return buf;
+
+		bufsiz = nbufsiz;
+	}
+
+	*len = (ptr - buf) + 1;
+	return buf;
+}
+
diff --git a/compat/queue.h b/compat/queue.h
new file mode 100644
index 0000000..a6fe39c
--- /dev/null
+++ b/compat/queue.h
@@ -0,0 +1,527 @@
+/*	$OpenBSD: queue.h,v 1.31 2005/11/25 08:06:25 otto Exp $	*/
+/*	$NetBSD: queue.h,v 1.11 1996/05/16 05:17:14 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)queue.h	8.5 (Berkeley) 8/20/94
+ */
+
+#ifndef	_SYS_QUEUE_H_
+#define	_SYS_QUEUE_H_
+
+/*
+ * This file defines five types of data structures: singly-linked lists,
+ * lists, simple queues, tail queues, and circular queues.
+ *
+ *
+ * A singly-linked list is headed by a single forward pointer. The elements
+ * are singly linked for minimum space and pointer manipulation overhead at
+ * the expense of O(n) removal for arbitrary elements. New elements can be
+ * added to the list after an existing element or at the head of the list.
+ * Elements being removed from the head of the list should use the explicit
+ * macro for this purpose for optimum efficiency. A singly-linked list may
+ * only be traversed in the forward direction.  Singly-linked lists are ideal
+ * for applications with large datasets and few or no removals or for
+ * implementing a LIFO queue.
+ *
+ * A list is headed by a single forward pointer (or an array of forward
+ * pointers for a hash table header). The elements are doubly linked
+ * so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before
+ * or after an existing element or at the head of the list. A list
+ * may only be traversed in the forward direction.
+ *
+ * A simple queue is headed by a pair of pointers, one the head of the
+ * list and the other to the tail of the list. The elements are singly
+ * linked to save space, so elements can only be removed from the
+ * head of the list. New elements can be added to the list before or after
+ * an existing element, at the head of the list, or at the end of the
+ * list. A simple queue may only be traversed in the forward direction.
+ *
+ * A tail queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or
+ * after an existing element, at the head of the list, or at the end of
+ * the list. A tail queue may be traversed in either direction.
+ *
+ * A circle queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or after
+ * an existing element, at the head of the list, or at the end of the list.
+ * A circle queue may be traversed in either direction, but has a more
+ * complex end of list detection.
+ *
+ * For details on the use of these macros, see the queue(3) manual page.
+ */
+
+#ifdef QUEUE_MACRO_DEBUG
+#define _Q_INVALIDATE(a) (a) = ((void *)-1)
+#else
+#define _Q_INVALIDATE(a)
+#endif
+
+/*
+ * Singly-linked List definitions.
+ */
+#define SLIST_HEAD(name, type)						\
+struct name {								\
+	struct type *slh_first;	/* first element */			\
+}
+
+#define	SLIST_HEAD_INITIALIZER(head)					\
+	{ NULL }
+
+#define SLIST_ENTRY(type)						\
+struct {								\
+	struct type *sle_next;	/* next element */			\
+}
+
+/*
+ * Singly-linked List access methods.
+ */
+#define	SLIST_FIRST(head)	((head)->slh_first)
+#define	SLIST_END(head)		NULL
+#define	SLIST_EMPTY(head)	(SLIST_FIRST(head) == SLIST_END(head))
+#define	SLIST_NEXT(elm, field)	((elm)->field.sle_next)
+
+#define	SLIST_FOREACH(var, head, field)					\
+	for((var) = SLIST_FIRST(head);					\
+	    (var) != SLIST_END(head);					\
+	    (var) = SLIST_NEXT(var, field))
+
+#define	SLIST_FOREACH_PREVPTR(var, varp, head, field)			\
+	for ((varp) = &SLIST_FIRST((head));				\
+	    ((var) = *(varp)) != SLIST_END(head);			\
+	    (varp) = &SLIST_NEXT((var), field))
+
+/*
+ * Singly-linked List functions.
+ */
+#define	SLIST_INIT(head) {						\
+	SLIST_FIRST(head) = SLIST_END(head);				\
+}
+
+#define	SLIST_INSERT_AFTER(slistelm, elm, field) do {			\
+	(elm)->field.sle_next = (slistelm)->field.sle_next;		\
+	(slistelm)->field.sle_next = (elm);				\
+} while (0)
+
+#define	SLIST_INSERT_HEAD(head, elm, field) do {			\
+	(elm)->field.sle_next = (head)->slh_first;			\
+	(head)->slh_first = (elm);					\
+} while (0)
+
+#define	SLIST_REMOVE_NEXT(head, elm, field) do {			\
+	(elm)->field.sle_next = (elm)->field.sle_next->field.sle_next;	\
+} while (0)
+
+#define	SLIST_REMOVE_HEAD(head, field) do {				\
+	(head)->slh_first = (head)->slh_first->field.sle_next;		\
+} while (0)
+
+#define SLIST_REMOVE(head, elm, type, field) do {			\
+	if ((head)->slh_first == (elm)) {				\
+		SLIST_REMOVE_HEAD((head), field);			\
+	} else {							\
+		struct type *curelm = (head)->slh_first;		\
+									\
+		while (curelm->field.sle_next != (elm))			\
+			curelm = curelm->field.sle_next;		\
+		curelm->field.sle_next =				\
+		    curelm->field.sle_next->field.sle_next;		\
+		_Q_INVALIDATE((elm)->field.sle_next);			\
+	}								\
+} while (0)
+
+/*
+ * List definitions.
+ */
+#define LIST_HEAD(name, type)						\
+struct name {								\
+	struct type *lh_first;	/* first element */			\
+}
+
+#define LIST_HEAD_INITIALIZER(head)					\
+	{ NULL }
+
+#define LIST_ENTRY(type)						\
+struct {								\
+	struct type *le_next;	/* next element */			\
+	struct type **le_prev;	/* address of previous next element */	\
+}
+
+/*
+ * List access methods
+ */
+#define	LIST_FIRST(head)		((head)->lh_first)
+#define	LIST_END(head)			NULL
+#define	LIST_EMPTY(head)		(LIST_FIRST(head) == LIST_END(head))
+#define	LIST_NEXT(elm, field)		((elm)->field.le_next)
+
+#define LIST_FOREACH(var, head, field)					\
+	for((var) = LIST_FIRST(head);					\
+	    (var)!= LIST_END(head);					\
+	    (var) = LIST_NEXT(var, field))
+
+/*
+ * List functions.
+ */
+#define	LIST_INIT(head) do {						\
+	LIST_FIRST(head) = LIST_END(head);				\
+} while (0)
+
+#define LIST_INSERT_AFTER(listelm, elm, field) do {			\
+	if (((elm)->field.le_next = (listelm)->field.le_next) != NULL)	\
+		(listelm)->field.le_next->field.le_prev =		\
+		    &(elm)->field.le_next;				\
+	(listelm)->field.le_next = (elm);				\
+	(elm)->field.le_prev = &(listelm)->field.le_next;		\
+} while (0)
+
+#define	LIST_INSERT_BEFORE(listelm, elm, field) do {			\
+	(elm)->field.le_prev = (listelm)->field.le_prev;		\
+	(elm)->field.le_next = (listelm);				\
+	*(listelm)->field.le_prev = (elm);				\
+	(listelm)->field.le_prev = &(elm)->field.le_next;		\
+} while (0)
+
+#define LIST_INSERT_HEAD(head, elm, field) do {				\
+	if (((elm)->field.le_next = (head)->lh_first) != NULL)		\
+		(head)->lh_first->field.le_prev = &(elm)->field.le_next;\
+	(head)->lh_first = (elm);					\
+	(elm)->field.le_prev = &(head)->lh_first;			\
+} while (0)
+
+#define LIST_REMOVE(elm, field) do {					\
+	if ((elm)->field.le_next != NULL)				\
+		(elm)->field.le_next->field.le_prev =			\
+		    (elm)->field.le_prev;				\
+	*(elm)->field.le_prev = (elm)->field.le_next;			\
+	_Q_INVALIDATE((elm)->field.le_prev);				\
+	_Q_INVALIDATE((elm)->field.le_next);				\
+} while (0)
+
+#define LIST_REPLACE(elm, elm2, field) do {				\
+	if (((elm2)->field.le_next = (elm)->field.le_next) != NULL)	\
+		(elm2)->field.le_next->field.le_prev =			\
+		    &(elm2)->field.le_next;				\
+	(elm2)->field.le_prev = (elm)->field.le_prev;			\
+	*(elm2)->field.le_prev = (elm2);				\
+	_Q_INVALIDATE((elm)->field.le_prev);				\
+	_Q_INVALIDATE((elm)->field.le_next);				\
+} while (0)
+
+/*
+ * Simple queue definitions.
+ */
+#define SIMPLEQ_HEAD(name, type)					\
+struct name {								\
+	struct type *sqh_first;	/* first element */			\
+	struct type **sqh_last;	/* addr of last next element */		\
+}
+
+#define SIMPLEQ_HEAD_INITIALIZER(head)					\
+	{ NULL, &(head).sqh_first }
+
+#define SIMPLEQ_ENTRY(type)						\
+struct {								\
+	struct type *sqe_next;	/* next element */			\
+}
+
+/*
+ * Simple queue access methods.
+ */
+#define	SIMPLEQ_FIRST(head)	    ((head)->sqh_first)
+#define	SIMPLEQ_END(head)	    NULL
+#define	SIMPLEQ_EMPTY(head)	    (SIMPLEQ_FIRST(head) == SIMPLEQ_END(head))
+#define	SIMPLEQ_NEXT(elm, field)    ((elm)->field.sqe_next)
+
+#define SIMPLEQ_FOREACH(var, head, field)				\
+	for((var) = SIMPLEQ_FIRST(head);				\
+	    (var) != SIMPLEQ_END(head);					\
+	    (var) = SIMPLEQ_NEXT(var, field))
+
+/*
+ * Simple queue functions.
+ */
+#define	SIMPLEQ_INIT(head) do {						\
+	(head)->sqh_first = NULL;					\
+	(head)->sqh_last = &(head)->sqh_first;				\
+} while (0)
+
+#define SIMPLEQ_INSERT_HEAD(head, elm, field) do {			\
+	if (((elm)->field.sqe_next = (head)->sqh_first) == NULL)	\
+		(head)->sqh_last = &(elm)->field.sqe_next;		\
+	(head)->sqh_first = (elm);					\
+} while (0)
+
+#define SIMPLEQ_INSERT_TAIL(head, elm, field) do {			\
+	(elm)->field.sqe_next = NULL;					\
+	*(head)->sqh_last = (elm);					\
+	(head)->sqh_last = &(elm)->field.sqe_next;			\
+} while (0)
+
+#define SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do {		\
+	if (((elm)->field.sqe_next = (listelm)->field.sqe_next) == NULL)\
+		(head)->sqh_last = &(elm)->field.sqe_next;		\
+	(listelm)->field.sqe_next = (elm);				\
+} while (0)
+
+#define SIMPLEQ_REMOVE_HEAD(head, field) do {			\
+	if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) == NULL) \
+		(head)->sqh_last = &(head)->sqh_first;			\
+} while (0)
+
+/*
+ * Tail queue definitions.
+ */
+#define TAILQ_HEAD(name, type)						\
+struct name {								\
+	struct type *tqh_first;	/* first element */			\
+	struct type **tqh_last;	/* addr of last next element */		\
+}
+
+#define TAILQ_HEAD_INITIALIZER(head)					\
+	{ NULL, &(head).tqh_first }
+
+#define TAILQ_ENTRY(type)						\
+struct {								\
+	struct type *tqe_next;	/* next element */			\
+	struct type **tqe_prev;	/* address of previous next element */	\
+}
+
+/*
+ * tail queue access methods
+ */
+#define	TAILQ_FIRST(head)		((head)->tqh_first)
+#define	TAILQ_END(head)			NULL
+#define	TAILQ_NEXT(elm, field)		((elm)->field.tqe_next)
+#define TAILQ_LAST(head, headname)					\
+	(*(((struct headname *)((head)->tqh_last))->tqh_last))
+/* XXX */
+#define TAILQ_PREV(elm, headname, field)				\
+	(*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
+#define	TAILQ_EMPTY(head)						\
+	(TAILQ_FIRST(head) == TAILQ_END(head))
+
+#define TAILQ_FOREACH(var, head, field)					\
+	for((var) = TAILQ_FIRST(head);					\
+	    (var) != TAILQ_END(head);					\
+	    (var) = TAILQ_NEXT(var, field))
+
+#define TAILQ_FOREACH_REVERSE(var, head, headname, field)		\
+	for((var) = TAILQ_LAST(head, headname);				\
+	    (var) != TAILQ_END(head);					\
+	    (var) = TAILQ_PREV(var, headname, field))
+
+/*
+ * Tail queue functions.
+ */
+#define	TAILQ_INIT(head) do {						\
+	(head)->tqh_first = NULL;					\
+	(head)->tqh_last = &(head)->tqh_first;				\
+} while (0)
+
+#define TAILQ_INSERT_HEAD(head, elm, field) do {			\
+	if (((elm)->field.tqe_next = (head)->tqh_first) != NULL)	\
+		(head)->tqh_first->field.tqe_prev =			\
+		    &(elm)->field.tqe_next;				\
+	else								\
+		(head)->tqh_last = &(elm)->field.tqe_next;		\
+	(head)->tqh_first = (elm);					\
+	(elm)->field.tqe_prev = &(head)->tqh_first;			\
+} while (0)
+
+#define TAILQ_INSERT_TAIL(head, elm, field) do {			\
+	(elm)->field.tqe_next = NULL;					\
+	(elm)->field.tqe_prev = (head)->tqh_last;			\
+	*(head)->tqh_last = (elm);					\
+	(head)->tqh_last = &(elm)->field.tqe_next;			\
+} while (0)
+
+#define TAILQ_INSERT_AFTER(head, listelm, elm, field) do {		\
+	if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
+		(elm)->field.tqe_next->field.tqe_prev =			\
+		    &(elm)->field.tqe_next;				\
+	else								\
+		(head)->tqh_last = &(elm)->field.tqe_next;		\
+	(listelm)->field.tqe_next = (elm);				\
+	(elm)->field.tqe_prev = &(listelm)->field.tqe_next;		\
+} while (0)
+
+#define	TAILQ_INSERT_BEFORE(listelm, elm, field) do {			\
+	(elm)->field.tqe_prev = (listelm)->field.tqe_prev;		\
+	(elm)->field.tqe_next = (listelm);				\
+	*(listelm)->field.tqe_prev = (elm);				\
+	(listelm)->field.tqe_prev = &(elm)->field.tqe_next;		\
+} while (0)
+
+#define TAILQ_REMOVE(head, elm, field) do {				\
+	if (((elm)->field.tqe_next) != NULL)				\
+		(elm)->field.tqe_next->field.tqe_prev =			\
+		    (elm)->field.tqe_prev;				\
+	else								\
+		(head)->tqh_last = (elm)->field.tqe_prev;		\
+	*(elm)->field.tqe_prev = (elm)->field.tqe_next;			\
+	_Q_INVALIDATE((elm)->field.tqe_prev);				\
+	_Q_INVALIDATE((elm)->field.tqe_next);				\
+} while (0)
+
+#define TAILQ_REPLACE(head, elm, elm2, field) do {			\
+	if (((elm2)->field.tqe_next = (elm)->field.tqe_next) != NULL)	\
+		(elm2)->field.tqe_next->field.tqe_prev =		\
+		    &(elm2)->field.tqe_next;				\
+	else								\
+		(head)->tqh_last = &(elm2)->field.tqe_next;		\
+	(elm2)->field.tqe_prev = (elm)->field.tqe_prev;			\
+	*(elm2)->field.tqe_prev = (elm2);				\
+	_Q_INVALIDATE((elm)->field.tqe_prev);				\
+	_Q_INVALIDATE((elm)->field.tqe_next);				\
+} while (0)
+
+/*
+ * Circular queue definitions.
+ */
+#define CIRCLEQ_HEAD(name, type)					\
+struct name {								\
+	struct type *cqh_first;		/* first element */		\
+	struct type *cqh_last;		/* last element */		\
+}
+
+#define CIRCLEQ_HEAD_INITIALIZER(head)					\
+	{ CIRCLEQ_END(&head), CIRCLEQ_END(&head) }
+
+#define CIRCLEQ_ENTRY(type)						\
+struct {								\
+	struct type *cqe_next;		/* next element */		\
+	struct type *cqe_prev;		/* previous element */		\
+}
+
+/*
+ * Circular queue access methods
+ */
+#define	CIRCLEQ_FIRST(head)		((head)->cqh_first)
+#define	CIRCLEQ_LAST(head)		((head)->cqh_last)
+#define	CIRCLEQ_END(head)		((void *)(head))
+#define	CIRCLEQ_NEXT(elm, field)	((elm)->field.cqe_next)
+#define	CIRCLEQ_PREV(elm, field)	((elm)->field.cqe_prev)
+#define	CIRCLEQ_EMPTY(head)						\
+	(CIRCLEQ_FIRST(head) == CIRCLEQ_END(head))
+
+#define CIRCLEQ_FOREACH(var, head, field)				\
+	for((var) = CIRCLEQ_FIRST(head);				\
+	    (var) != CIRCLEQ_END(head);					\
+	    (var) = CIRCLEQ_NEXT(var, field))
+
+#define CIRCLEQ_FOREACH_REVERSE(var, head, field)			\
+	for((var) = CIRCLEQ_LAST(head);					\
+	    (var) != CIRCLEQ_END(head);					\
+	    (var) = CIRCLEQ_PREV(var, field))
+
+/*
+ * Circular queue functions.
+ */
+#define	CIRCLEQ_INIT(head) do {						\
+	(head)->cqh_first = CIRCLEQ_END(head);				\
+	(head)->cqh_last = CIRCLEQ_END(head);				\
+} while (0)
+
+#define CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do {		\
+	(elm)->field.cqe_next = (listelm)->field.cqe_next;		\
+	(elm)->field.cqe_prev = (listelm);				\
+	if ((listelm)->field.cqe_next == CIRCLEQ_END(head))		\
+		(head)->cqh_last = (elm);				\
+	else								\
+		(listelm)->field.cqe_next->field.cqe_prev = (elm);	\
+	(listelm)->field.cqe_next = (elm);				\
+} while (0)
+
+#define CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do {		\
+	(elm)->field.cqe_next = (listelm);				\
+	(elm)->field.cqe_prev = (listelm)->field.cqe_prev;		\
+	if ((listelm)->field.cqe_prev == CIRCLEQ_END(head))		\
+		(head)->cqh_first = (elm);				\
+	else								\
+		(listelm)->field.cqe_prev->field.cqe_next = (elm);	\
+	(listelm)->field.cqe_prev = (elm);				\
+} while (0)
+
+#define CIRCLEQ_INSERT_HEAD(head, elm, field) do {			\
+	(elm)->field.cqe_next = (head)->cqh_first;			\
+	(elm)->field.cqe_prev = CIRCLEQ_END(head);			\
+	if ((head)->cqh_last == CIRCLEQ_END(head))			\
+		(head)->cqh_last = (elm);				\
+	else								\
+		(head)->cqh_first->field.cqe_prev = (elm);		\
+	(head)->cqh_first = (elm);					\
+} while (0)
+
+#define CIRCLEQ_INSERT_TAIL(head, elm, field) do {			\
+	(elm)->field.cqe_next = CIRCLEQ_END(head);			\
+	(elm)->field.cqe_prev = (head)->cqh_last;			\
+	if ((head)->cqh_first == CIRCLEQ_END(head))			\
+		(head)->cqh_first = (elm);				\
+	else								\
+		(head)->cqh_last->field.cqe_next = (elm);		\
+	(head)->cqh_last = (elm);					\
+} while (0)
+
+#define	CIRCLEQ_REMOVE(head, elm, field) do {				\
+	if ((elm)->field.cqe_next == CIRCLEQ_END(head))			\
+		(head)->cqh_last = (elm)->field.cqe_prev;		\
+	else								\
+		(elm)->field.cqe_next->field.cqe_prev =			\
+		    (elm)->field.cqe_prev;				\
+	if ((elm)->field.cqe_prev == CIRCLEQ_END(head))			\
+		(head)->cqh_first = (elm)->field.cqe_next;		\
+	else								\
+		(elm)->field.cqe_prev->field.cqe_next =			\
+		    (elm)->field.cqe_next;				\
+	_Q_INVALIDATE((elm)->field.cqe_prev);				\
+	_Q_INVALIDATE((elm)->field.cqe_next);				\
+} while (0)
+
+#define CIRCLEQ_REPLACE(head, elm, elm2, field) do {			\
+	if (((elm2)->field.cqe_next = (elm)->field.cqe_next) ==		\
+	    CIRCLEQ_END(head))						\
+		(head).cqh_last = (elm2);				\
+	else								\
+		(elm2)->field.cqe_next->field.cqe_prev = (elm2);	\
+	if (((elm2)->field.cqe_prev = (elm)->field.cqe_prev) ==		\
+	    CIRCLEQ_END(head))						\
+		(head).cqh_first = (elm2);				\
+	else								\
+		(elm2)->field.cqe_prev->field.cqe_next = (elm2);	\
+	_Q_INVALIDATE((elm)->field.cqe_prev);				\
+	_Q_INVALIDATE((elm)->field.cqe_next);				\
+} while (0)
+
+#endif	/* !_SYS_QUEUE_H_ */
diff --git a/compat/strtonum.c b/compat/strtonum.c
new file mode 100644
index 0000000..e426388
--- /dev/null
+++ b/compat/strtonum.c
@@ -0,0 +1,65 @@
+/*	$OpenBSD: strtonum.c,v 1.6 2004/08/03 19:38:01 millert Exp $	*/
+
+/*
+ * Copyright (c) 2004 Ted Unangst and Todd Miller
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+
+#define INVALID 	1
+#define TOOSMALL 	2
+#define TOOLARGE 	3
+
+long long
+strtonum(const char *numstr, long long minval, long long maxval,
+    const char **errstrp)
+{
+	long long ll = 0;
+	char *ep;
+	int error = 0;
+	struct errval {
+		const char *errstr;
+		int err;
+	} ev[4] = {
+		{ NULL,		0 },
+		{ "invalid",	EINVAL },
+		{ "too small",	ERANGE },
+		{ "too large",	ERANGE },
+	};
+
+	ev[0].err = errno;
+	errno = 0;
+	if (minval > maxval)
+		error = INVALID;
+	else {
+		ll = strtoll(numstr, &ep, 10);
+		if (numstr == ep || *ep != '\0')
+			error = INVALID;
+		else if ((ll == LLONG_MIN && errno == ERANGE) || ll < minval)
+			error = TOOSMALL;
+		else if ((ll == LLONG_MAX && errno == ERANGE) || ll > maxval)
+			error = TOOLARGE;
+	}
+	if (errstrp != NULL)
+		*errstrp = ev[error].errstr;
+	errno = ev[error].err;
+	if (error)
+		ll = 0;
+
+	return (ll);
+}
diff --git a/configure b/configure
new file mode 100755
index 0000000..7150f1b
--- /dev/null
+++ b/configure
@@ -0,0 +1,78 @@
+#!/bin/sh
+#  $Id: configure,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $
+#
+# This configure script was greatly inspired by the script distributed with tmux
+# from Nicholas Marriott. The license from the original script is reproduced
+# below:
+#
+# Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+# IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+# OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+
+OLDRUNNER_PLATFORM=${OLDRUNNER_PLATFORM:-`uname -s`}
+
+CONFIG_H=config.h
+rm -f $CONFIG_H
+echo "/* $OLDRUNNER_PLATFORM */" >$CONFIG_H
+
+CONFIG_MK=config.mk
+rm -f $CONFIG_MK
+echo "# $OLDRUNNER_PLATFORM" >$CONFIG_MK
+
+cat <<EOF >>$CONFIG_H
+#undef HAVE_CURSES_H
+#undef HAVE_NCURSES_H
+#undef HAVE_NCURSES_NCURSES_H
+#undef HAVE_NCURSESW_NCURSES_H
+#undef HAVE_BZERO
+#undef HAVE_FGETLN
+#undef HAVE_QUEUE_H
+#undef HAVE_STRTONUM
+EOF
+
+case $OLDRUNNER_PLATFORM in
+# ------------------------------------------------------------------------------
+    OpenBSD|FreeBSD)
+	cat <<EOF >>$CONFIG_H
+#define HAVE_CURSES_H
+#define HAVE_BZERO
+#define HAVE_FGETLN
+#define HAVE_QUEUE_H
+#define HAVE_STRTONUM
+EOF
+	cat <<EOF >>$CONFIG_MK
+LIBS+= -lcurses
+EOF
+	;;
+# ------------------------------------------------------------------------------
+    Linux)
+	cat <<EOF >>$CONFIG_H
+#define HAVE_NCURSES_H
+#define HAVE_BZERO
+EOF
+	cat <<EOF >>$CONFIG_MK
+CFLAGS+= -std=c99 -D_GNU_SOURCE -D_POSIX_SOURCE
+LIBS+= -lncurses
+SRCS+= compat/fgetln.c  \
+       compat/strtonum.c
+EOF
+	;;
+# ------------------------------------------------------------------------------
+    *)
+	echo Unable to configure for $OLDRUNNER_PLATFORM
+	exit 1
+esac
+
+echo Configured for $OLDRUNNER_PLATFORM
+exit 0
diff --git a/coord.c b/coord.c
new file mode 100644
index 0000000..e07c45f
--- /dev/null
+++ b/coord.c
@@ -0,0 +1,117 @@
+/*  $Id: coord.c,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "oldrunner.h"
+
+void
+coord_copy (const struct coord *orig, struct coord *dest)
+{
+  dest->y = orig->y;
+  dest->x = orig->x;
+}
+
+void
+coord_below (const struct coord *orig, struct coord *dest)
+{
+  dest->y = orig->y + 1;
+  dest->x = orig->x;
+}
+
+void
+coord_above (const struct coord *orig, struct coord *dest)
+{
+  dest->y = orig->y - 1;
+  dest->x = orig->x;
+}
+
+enum move
+coord_opposite_dir (enum move dir)
+{
+  switch (dir)
+    {
+    case MOV_RIGHT:
+      return MOV_LEFT;
+    case MOV_LEFT:
+      return MOV_RIGHT;
+    case MOV_UP:
+      return MOV_DOWN;
+    case MOV_DOWN:
+      return MOV_UP;
+    default:
+      return MOV_NONE;
+    }
+}
+
+void
+coord_compute (const struct coord *orig, enum move move, struct coord *dest)
+{
+  coord_copy (orig, dest);
+  switch (move)
+    {
+    case MOV_UP:
+      dest->y--;
+      break;
+    case MOV_DOWN:
+    case MOV_FALL:      
+      dest->y++;
+      break;      
+    case MOV_LEFT:
+      dest->x--;
+      break;
+    case MOV_RIGHT:
+      dest->x++;
+      break;
+    default:
+      dest->y = dest->x = 0;
+      /* NOTREACHED */
+    }
+}
+
+void
+coord_set_yx (struct coord *coord, int y, int x)
+{
+  coord->y = y;
+  coord->x = x;
+}
+
+unsigned
+coord_equal (const struct coord *p1, const struct coord *p2)
+{
+  return p1->x == p2->x && p1->y == p2->y ? 1 : 0;
+}
+
+void
+coord_diff (const struct coord *p1, const struct coord *p2, struct coord *diff)
+{
+  diff->y = p1->y - p2->y;
+  diff->x = p1->x - p2->x;
+}
diff --git a/foes.c b/foes.c
new file mode 100644
index 0000000..abe3fba
--- /dev/null
+++ b/foes.c
@@ -0,0 +1,290 @@
+/*  $Id: foes.c,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "oldrunner.h"
+
+#define FOES_DELAY         (OLDRUNNER_TIMEOUT * 3)
+#define FOES_ESCAPE_DELAY  (BRICK_COMEBACK_TIME * .75)
+
+struct foe {
+  struct coord       pos;
+  struct timer       timer;
+  enum move          current_move;
+  int                state;
+  SLIST_ENTRY(foe)   foesp;
+};
+
+SLIST_HEAD(, foe) foes;
+
+void
+foes_init (void)
+{
+  SLIST_INIT (&foes);
+}
+
+void
+foes_free (void)
+{
+  while (!SLIST_EMPTY (&foes))
+    {
+      struct foe *f;
+      
+      f = SLIST_FIRST (&foes);
+      SLIST_REMOVE_HEAD (&foes, foesp);
+      xfree (f);
+    }
+}
+
+void
+foes_add (const struct coord *pos)
+{
+  struct foe *f;
+
+  f = xmalloc (sizeof *f);
+  coord_set_yx (&f->pos, pos->y, pos->x);
+  f->current_move = MOV_NONE;
+  f->state = STATE_ALIVE;
+  SLIST_INSERT_HEAD (&foes, f, foesp);
+}
+
+void
+foes_draw (void)
+{
+  struct foe *f;
+
+  SLIST_FOREACH (f, &foes, foesp)
+    gfx_show_sprite (SP_FOE, &f->pos);
+}
+
+/*
+ * Once killed, a foe reappears on top of current level with
+ * a random horizontal position.
+ */
+static void
+get_random_inipos (struct coord *pos)
+{
+  coord_set_yx (pos, 0, -1);
+  while (lvl_obstacle_at (pos))
+    pos->x = lvl_random_xpos ();
+}
+
+static void
+foe_killed (struct foe *foe)
+{
+  struct coord inipos;
+
+  get_random_inipos (&inipos);
+  coord_copy  (&inipos, &foe->pos);
+  foe->current_move = MOV_FALL;
+  foe->state = STATE_ALIVE;
+}
+
+static void
+foe_trapped (struct foe *foe)
+{
+  foe->state |= STATE_TRAPPED;
+  timer_start (&foe->timer);
+}
+
+static void
+check_trap (struct foe *foe)
+{
+  if (lvl_got_hole_below (&foe->pos))
+    {
+      struct coord below;
+
+      foe_trapped (foe);
+      coord_below (&foe->pos, &below);
+      gfx_move_sprite (SP_FOE, &foe->pos, &below);
+      coord_copy (&below, &foe->pos);
+    }
+}
+
+static void
+check_hole (struct foe *foe)
+{
+  if (lvl_nothing_below (&foe->pos))
+    foe->current_move = MOV_FALL;
+}
+
+static unsigned
+another_foe_at_pos (const struct foe *foe, const struct coord *pos)
+{
+  struct foe *f;
+
+  SLIST_FOREACH (f, &foes, foesp)
+    if (f != foe && coord_equal (pos, &f->pos))
+      return 1;
+
+  return 0;
+}
+
+unsigned
+foes_at_pos (const struct coord *pos)
+{
+  struct foe *f;
+
+  SLIST_FOREACH (f, &foes, foesp)
+    if (coord_equal (pos, &f->pos))
+      return 1;
+
+  return 0;
+}
+
+static void
+compute_move (const struct coord *hero, struct foe *foe)
+{
+  struct coord dpos;
+
+  if (foe->current_move == MOV_FALL)
+    coord_compute (&foe->pos, foe->current_move, &foe->pos);    
+  else
+    {
+      coord_diff (hero, &foe->pos, &dpos);
+      if (dpos.y != 0)
+        {
+          enum move wanted_dir, prefered_move;
+          
+          if (foe->current_move != MOV_LEFT && foe->current_move != MOV_RIGHT)
+            prefered_move = dpos.x >= 0 ? MOV_RIGHT : MOV_LEFT;
+          else
+            prefered_move = foe->current_move;
+          wanted_dir = dpos.y > 0 ? MOV_DOWN : MOV_UP;
+          foe->current_move = lvl_shortest_way (&foe->pos,
+                                                wanted_dir,
+                                                prefered_move);
+          coord_compute (&foe->pos, foe->current_move, &foe->pos);
+        }
+      else if (dpos.x > 0)
+        {
+          foe->current_move = MOV_RIGHT;
+          foe->pos.x++;
+        }
+      else if (dpos.x < 0)
+        {
+          foe->current_move = MOV_LEFT;
+          foe->pos.x--;
+        }
+      else
+        foe->current_move = MOV_NONE;
+    }
+}
+
+static void
+try_escape (struct foe *f)
+{
+  struct coord posorig;
+  
+  if (!timer_delay_elapsed (&f->timer, FOES_ESCAPE_DELAY))
+    return;
+
+  coord_set_yx (&posorig, f->pos.y, f->pos.x);
+  coord_set_yx (&f->pos, f->pos.y - 1, f->pos.x);
+  gfx_move_sprite (SP_FOE, &posorig, &f->pos);
+  f->state &= ~STATE_TRAPPED;
+}
+
+static void
+update_foe_pos (const struct coord *hero_pos, struct foe *f)
+{
+  struct coord posorig;
+  
+  coord_set_yx (&posorig, f->pos.y, f->pos.x);
+  compute_move (hero_pos, f);  
+  if (!coord_equal (&posorig, &f->pos)
+      && lvl_valid_move (&posorig, f->current_move, &f->pos, SP_FOE)
+      && !another_foe_at_pos (f, &f->pos))
+    {
+      gfx_move_sprite (SP_FOE, &posorig, &f->pos);
+      check_trap (f);
+      check_hole (f);
+      if (coord_equal (&f->pos, hero_pos))
+        hero_die ();
+    }
+  else
+    {
+      /*
+       * The move is not possible, revert to current position
+       * and force next move to be in opposite direction using
+       * foe->current_move.
+       */
+      coord_copy (&posorig, &f->pos);
+      f->current_move =
+        f->current_move == MOV_FALL ?
+        MOV_NONE : coord_opposite_dir (f->current_move);
+    }
+}
+
+void
+foes_update_pos (void)
+{
+  static struct timer  foes_timer;
+  struct timer         now;
+  struct foe          *foe;
+  struct coord         hero_pos;
+
+  timer_get_time (&now);
+  if (timer_diff (&now, &foes_timer) < FOES_DELAY)
+    return;
+  
+  hero_get_pos (&hero_pos);
+
+  SLIST_FOREACH (foe, &foes, foesp)
+    {
+      struct coord foe_prevpos;
+
+      coord_set_yx (&foe_prevpos, foe->pos.y, foe->pos.x);
+      
+      if (foe->state & STATE_TRAPPED)
+        try_escape (foe);
+      else
+        update_foe_pos (&hero_pos, foe);
+    }
+  timer_get_time (&foes_timer);
+}
+
+unsigned
+foes_wallup_at (const struct coord *pos)
+{
+  struct foe *f;
+
+  SLIST_FOREACH (f, &foes, foesp)
+    {
+      if (coord_equal (pos, &f->pos))
+        {
+          foe_killed (f);
+          return 1;
+        }
+    }
+  
+  return 0;
+}
diff --git a/game.c b/game.c
new file mode 100644
index 0000000..0cb27f9
--- /dev/null
+++ b/game.c
@@ -0,0 +1,297 @@
+/*  $Id: game.c,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "oldrunner.h"
+
+#ifdef LEVELS_PATH
+#  define  LEVELS  LEVELS_PATH "/original.lvl"
+#else
+#  define  LEVELS  "./levels/original.lvl"
+#endif
+
+#define  POINTS_FOR_MONEY  50
+#define  LIVES_AT_START    5
+
+static struct game_info ginfo;
+
+static void
+game_lost (void)
+{
+  struct usr_input input;
+  
+  gfx_game_over ();
+  gfx_get_input (&input);
+  game_end ();
+}
+
+void
+game_won (void)
+{
+  struct usr_input input;
+  
+  gfx_game_won ();
+  gfx_get_input (&input);
+  game_end ();
+}
+
+void
+game_init (int startlvl)
+{
+  lvl_init ();
+  if (!game_load (LEVELS))
+    EXIT ("Could not load game levels. Aborting...");
+  ginfo.lives = LIVES_AT_START;
+  ginfo.level = startlvl + 1;
+  gfx_init ();  
+  lvl_load (startlvl);
+  hero_init ();
+  game_update ();
+}
+
+/*
+ * The window will be centered on player either if the user requests it or if
+ * the level board is too large to fit it the screen.
+ */
+static void
+set_view (void)
+{
+  struct size lvl;
+
+  lvl.w = lvl_width ();
+  lvl.h = lvl_height ();
+  
+  if (AUTO_CENTER_MODE || lvl.h > VIEWPORT_HEIGHT || lvl.w > VIEWPORT_WIDTH)
+    {
+      struct coord player_pos;
+
+      hero_get_pos (&player_pos);      
+      gfx_center_at (&player_pos);
+    }
+  else
+    {
+      struct coord fixed_pos;
+
+      coord_set_yx (&fixed_pos, VIEWPORT_HEIGHT / 2, lvl.w / 2);
+      gfx_center_at (&fixed_pos);
+    }
+}
+
+void
+game_update (void)
+{
+  set_view ();
+  lvl_objects_update ();
+  hero_draw ();
+  if (!(ginfo.state & NO_CHANGE))
+    {
+      gfx_update_info (&ginfo);
+      ginfo.state = NO_CHANGE;
+    }
+  gfx_update ();
+}
+
+void
+game_end (void)
+{
+  gfx_end ();
+  exit (0);
+}
+
+static unsigned
+read_level_row (char *row, unsigned rownum)
+{
+  char *rowend;
+  int len;
+  
+  if (*row != '[')
+    return 0;
+  row++;
+
+  if (!(rowend = strchr (row, ']')))
+    return 0;
+  *rowend = '\0';
+  len = rowend - row;
+  
+  return lvl_set_row (rownum, len, row);
+}
+
+static unsigned
+store_level_attr (const char *attr, char *val)
+{
+  if (!strcmp (attr, "level"))
+    return lvl_set_name (val);
+  else if (!strcmp (attr, "author"))
+    return lvl_set_author (val);
+  else if (!strcmp (attr, "size"))
+    return lvl_set_size (val);
+  else
+    return 0;
+}
+
+/* XXX use strsep instead. */
+static unsigned
+read_level_attr (char *line)
+{
+  char *p, *attr, *val;
+
+  attr = p = line;
+
+  while (!isblank ((int)(*p)))
+    p++;
+  *p++ = '\0';
+
+  while (isblank ((int)(*p)))
+    p++;
+  val = p;
+
+  return store_level_attr (attr, val);
+}
+
+/*
+ * XXX improve comment.
+ *
+ * A game file contains the description of the levels.
+ * The following rules apply:
+ *   - empty lines are ignored, as well as those beginning with #
+ *   - the following keywords are used to describe a level:
+ *     -  level: name of the level (default: "")
+ *     - author: author of the level (default: "")
+ *     -   size: in the form widthxlength (default: 26x16)
+ *   - if keywords are present, they must be placed before the level layout
+ *   - the reading of a level row stops as soon as the line does
+ *     not start with '[', meaning a layout description must not have empty
+ *     lines
+ */
+unsigned
+game_load (const char *path)
+{
+  FILE *f;
+  char *buf;
+  unsigned rownum, newlevel;
+  
+  if (!(f = io_fopen (LEVELS)))
+    return 0;
+
+  newlevel = 1;
+  rownum = 0;
+  while ((buf = io_getln (f)))
+    {
+      char *p;
+
+#define CHK_NEW_LVL  do {                       \
+        if (newlevel)                           \
+          {                                     \
+            lvl_add_new ();                     \
+            newlevel = 0;                       \
+            rownum = 0;                         \
+          }                                     \
+    } while (0)
+      
+      /* Remove trailing spaces. */
+      p = buf;
+      while (isblank ((int)(*p)))
+        p++;
+      
+      switch (*p)
+        {
+        case '[':
+          CHK_NEW_LVL;
+          read_level_row (p, rownum);
+          rownum++;
+          break;
+        case '#':
+        case '\0':
+          if (rownum)
+            newlevel = 1;
+          continue;
+        default:
+          if (rownum)
+            newlevel = 1;
+          CHK_NEW_LVL;
+          read_level_attr (p);
+          break;
+        }
+      
+#undef CHK_NEW_LVL      
+    }
+
+  io_fclose (f);
+
+  return 1;
+}
+
+void
+game_score_inc (void)
+{
+  ginfo.state |= SCORE_CHANGE;
+  ginfo.score += POINTS_FOR_MONEY;
+}
+
+int
+game_level_num (void)
+{
+  return ginfo.level;
+}
+
+void
+game_level_inc (void)
+{
+  ginfo.state |= LEVEL_CHANGE;
+  ginfo.level++;
+}
+
+void
+game_level_dec (void)
+{
+  ginfo.state |= LEVEL_CHANGE;  
+  ginfo.level--;
+}
+
+void
+game_lives_inc (void)
+{
+  ginfo.state |= LIVES_CHANGE;  
+  ginfo.lives++;
+}
+
+void
+game_lives_dec (void)
+{
+  ginfo.state |= LIVES_CHANGE;
+  if (ginfo.lives == 0)
+    game_lost ();
+  ginfo.lives--;
+}
diff --git a/gfx.c b/gfx.c
new file mode 100644
index 0000000..45c9522
--- /dev/null
+++ b/gfx.c
@@ -0,0 +1,448 @@
+/*  $Id: gfx.c,v 1.2 2012/01/31 14:53:07 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#include "oldrunner.h"
+
+#ifdef HAVE_CURSES_H
+#  include <curses.h>
+#elif defined HAVE_NCURSES_H
+#  include <ncurses.h>
+#elif defined HAVE_NCURSES_NCURSES_H
+#  include <ncurses/ncurses.h>
+#elif defined HAVE_NCURSESW_NCURSES_H
+#  include <ncursesw/ncurses.h>
+#else
+#  error "Missing curses library header. Aborting..."
+#endif
+
+#define  INFOBAR_HEIGHT  2
+
+struct window {
+  WINDOW          *p;     /* pointer to window */
+  struct size      siz;
+  struct coord     pos;
+};
+
+struct scrollwin {
+  struct window    pad;
+  struct window    view;
+};
+
+static struct scrollwin  scr;
+static struct size       term;
+
+static chtype sprite[SPRITES];
+
+static void
+sprites_init (void)
+{
+  sprite[SP_NONE]           = ' ';
+  sprite[SP_BRICK]          = ACS_CKBOARD;
+  sprite[SP_BRICK_SCRACK]   = '~';
+  sprite[SP_BRICK_LCRACK]   = 'U';
+  sprite[SP_BRICK_BROKEN]   = sprite[SP_NONE];
+  sprite[SP_CIMENT]         = ' ' | A_REVERSE;
+  sprite[SP_FAKE_BRICK]     = sprite[SP_BRICK];
+  sprite[SP_LADDER]         = 'H';
+  sprite[SP_ROPE]           = ACS_HLINE;
+  sprite[SP_ESCAPE_LADDER]  = ACS_VLINE;
+  sprite[SP_MONEY]          = ACS_DIAMOND;
+  sprite[SP_HERO]           = '@';
+  sprite[SP_FOE]            = '@' | A_REVERSE | A_BLINK;
+  sprite[SP_INVALID]        = '?';
+}
+
+static void
+screen_init_size (void)
+{
+  scr.view.siz.w = VIEWPORT_WIDTH;
+  scr.view.siz.h = VIEWPORT_HEIGHT;
+
+  getmaxyx (stdscr, term.h, term.w); /* Size of the terminal. */
+  coord_set_yx (&scr.view.pos,
+                term.h > scr.view.siz.h ? (term.h - scr.view.siz.h) / 2 : 0,
+                term.w > scr.view.siz.w ? (term.w - scr.view.siz.w) / 2 : 0);
+  scr.pad.siz.w = LEVEL_MAX_WIDTH;
+  scr.pad.siz.h = LEVEL_MAX_HEIGHT;
+  coord_copy (&scr.view.pos, &scr.pad.pos);
+}
+
+static void
+screen_init (void)
+{
+  screen_init_size ();
+  scr.pad.p = newpad (scr.pad.siz.h, scr.pad.siz.w);
+  scr.view.p = newwin (scr.view.siz.h, scr.view.siz.w,
+                       scr.view.pos.y, scr.view.pos.x);
+  keypad (scr.view.p, TRUE);  /* Enable function and arrow keys. */
+  nodelay (scr.view.p, TRUE);
+  box (scr.view.p, 0, 0);
+  wnoutrefresh (scr.view.p);
+}
+
+static void
+screen_update (void)
+{
+  pnoutrefresh (scr.pad.p, scr.pad.pos.y, scr.pad.pos.x,
+                scr.view.pos.y + (scr.view.siz.h - lvl_height()) / 2,
+                scr.view.pos.x + (scr.view.siz.w - lvl_width()) / 2,
+                scr.view.pos.y + scr.view.siz.h - INFOBAR_HEIGHT,
+                scr.view.pos.x + scr.view.siz.w - 2);
+}
+
+static void
+newpopup (struct window *pop)
+{
+  const int BORDERWIDTH = 2;
+  
+  pop->siz.w = scr.view.siz.w - 2 * BORDERWIDTH;
+  pop->siz.h = scr.view.siz.h - 2 * BORDERWIDTH;
+  pop->pos.y = scr.view.pos.y + BORDERWIDTH;
+  pop->pos.x = scr.view.pos.x + BORDERWIDTH;
+
+  pop->p = newwin (pop->siz.h, pop->siz.w, pop->pos.y, pop->pos.x);
+  keypad (pop->p, TRUE);
+}
+
+static void
+delpopup (struct window *pop)
+{
+  wclear (pop->p);
+  wrefresh (pop->p);
+  delwin (pop->p);
+}
+
+static void
+showpopup (struct window *pop)
+{
+  box (pop->p, 0, 0);
+  wrefresh (pop->p);
+}
+
+void
+gfx_init (void)
+{
+  /* Curses initialization. */
+  initscr ();                   /* start the curses mode */
+  cbreak ();                    /* control chars generate a signal */
+  noecho ();                    /* controls echoing of typed chars */
+  curs_set (0);                 /* make cursor invisible */
+  sprites_init ();
+
+  /* Game window initialization. */
+  screen_init ();
+}
+
+void
+gfx_end (void)
+{
+  wclear (scr.view.p);
+  wrefresh (scr.view.p);
+  delwin (scr.pad.p);
+  delwin (scr.view.p);
+  endwin ();
+}
+
+void
+gfx_alert (void)
+{
+  flash ();
+  napms (200);
+  flash ();
+}
+
+void
+gfx_center_at (struct coord *pos)
+{
+  coord_set_yx (&scr.pad.pos,
+                pos->y - VIEWPORT_HEIGHT / 2, pos->x - VIEWPORT_WIDTH / 2);
+}
+
+void
+gfx_update (void)
+{
+  screen_update ();
+  doupdate ();
+}
+
+void
+gfx_get_input (struct usr_input *input)
+{
+  int key;
+
+  key = wgetch (scr.view.p);
+  input->key = key == ERR ? -1 : key;
+}
+
+void
+gfx_show_sprite (enum sprite sp, const struct coord *pos)
+{
+  gfx_move_sprite (sp, 0, pos);
+}
+
+/*
+ * Show the given character at the current position.
+ * The optional previous position is also given so that graphics routines can
+ * properly clean it up if necessary.
+ *
+ * note:
+ * If the viewport is larger than the level size, a shift must be applied in
+ * order to center the level on screen.
+ */
+void
+gfx_move_sprite (enum sprite sp, const struct coord *prev,
+                 const struct coord *current)
+{
+  mvwaddch (scr.pad.p, current->y, current->x, sprite[sp]);
+  if (prev)
+    {
+      sp = lvl_decor_at_pos (prev);
+      mvwaddch (scr.pad.p, prev->y, prev->x, sprite[sp]);
+    }
+
+  screen_update ();
+}
+
+/*
+ * Display information related to current game (score, number of lives and
+ * current level).
+ */
+void
+gfx_update_info (const struct game_info *info)
+{
+  const int HIGHLIGHT = WA_REVERSE | WA_BOLD;
+  char score[BUFSIZ], lives[BUFSIZ], level[BUFSIZ];
+  int score_len, lives_len, level_len, yoff, xoff;
+
+  score_len = snprintf (score, sizeof score, "[SCORE: %010d]", info->score);
+  lives_len = snprintf (lives, sizeof lives, "[LIVES: %03d]", info->lives);
+  level_len = snprintf (level, sizeof level, "[LEVEL: %03d]", info->level);
+
+  yoff = scr.view.siz.h - INFOBAR_HEIGHT + 1;
+  xoff = scr.view.siz.w - (score_len + lives_len + level_len);
+  xoff >>= 2;
+
+  if (info->state & SCORE_CHANGE)
+    wattron (scr.view.p, HIGHLIGHT);
+  mvwprintw (scr.view.p, yoff, xoff, score);
+  if (info->state & SCORE_CHANGE)
+    wattroff (scr.view.p, HIGHLIGHT);
+
+  if (info->state & LIVES_CHANGE)
+    wattron (scr.view.p, HIGHLIGHT);
+  mvwprintw (scr.view.p, yoff, score_len + 2 * xoff, lives);
+  if (info->state & LIVES_CHANGE)
+    wattroff (scr.view.p, HIGHLIGHT);
+
+  if (info->state & LEVEL_CHANGE)
+    wattron (scr.view.p, HIGHLIGHT);
+  mvwprintw (scr.view.p, yoff, score_len + lives_len + 3 * xoff, level);
+  if (info->state & LEVEL_CHANGE)
+    wattroff (scr.view.p, HIGHLIGHT);
+
+  wnoutrefresh (scr.view.p);
+}
+
+void
+gfx_popup (const char *title, const char *msg)
+{
+  struct window pop;
+  char *any_key = "Press any key...";
+
+  newpopup (&pop);
+
+  mvwhline (pop.p, 2, 1, ACS_HLINE, pop.siz.w - 2);
+  mvwprintw (pop.p, 1, (pop.siz.w - strlen (title)) / 2, "%s", title);
+
+  mvwprintw (pop.p, 5, 1, "%s", msg);
+  mvwprintw (pop.p, pop.siz.h - 2, pop.siz.w - (strlen (any_key) + 1), "%s",
+             any_key);
+
+  showpopup (&pop);
+  (void)wgetch (pop.p);
+  delpopup (&pop);
+}
+
+void
+gfx_game_over (void)
+{
+  const char *rip =
+  "                   +-+                   \n" 
+  "                  +-+-+-+                 \n"
+  "                  +-+-+-+                 \n"
+  "                    | |                   \n"
+  "             +------+-+------+            \n"
+  "             |               |            \n"
+  "             |   R   I   P   |            \n"
+  "  ~~~~~~~~~~~|               |~~~~~~~~~~  \n"
+  "             +---------------+            \n";
+
+  gfx_popup ("G A M E  O V E R", rip);
+}
+
+/*
+ * The ending screen was taken from the ncurses original sources
+ * (firework.c file).
+ * The original copyright is reproduced below.
+ */
+/****************************************************************************
+ * Copyright (c) 1998-2005,2006 Free Software Foundation, Inc.              *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+static void
+fw_show (struct window *win)
+{
+  const char *title = "C O N G R A T U L A T I O N S";
+  const int titlelen = 29;
+
+  mvwhline (win->p, 2, 1, ACS_HLINE, win->siz.w - 2);
+  mvwprintw (win->p, 1, (win->siz.w - titlelen) / 2, "%s", title);
+  showpopup (win);
+  napms (120);
+}
+
+static void
+fw_explode (struct window *win, int row, int col)
+{
+  werase (win->p);
+  mvwprintw (win->p, row, col, "-");
+  fw_show (win);
+
+  mvwprintw(win->p, row - 1, col - 1, " - ");
+  mvwprintw(win->p, row + 0, col - 1, "-+-");
+  mvwprintw(win->p, row + 1, col - 1, " - ");
+  fw_show (win);
+
+  mvwprintw(win->p, row - 2, col - 2, " --- ");
+  mvwprintw(win->p, row - 1, col - 2, "-+++-");
+  mvwprintw(win->p, row + 0, col - 2, "-+#+-");
+  mvwprintw(win->p, row + 1, col - 2, "-+++-");
+  mvwprintw(win->p, row + 2, col - 2, " --- ");
+  fw_show (win);
+
+  mvwprintw(win->p, row - 2, col - 2, " +++ ");
+  mvwprintw(win->p, row - 1, col - 2, "++#++");
+  mvwprintw(win->p, row + 0, col - 2, "+# #+");
+  mvwprintw(win->p, row + 1, col - 2, "++#++");
+  mvwprintw(win->p, row + 2, col - 2, " +++ ");
+  fw_show (win);
+
+  mvwprintw(win->p, row - 2, col - 2, "  #  ");
+  mvwprintw(win->p, row - 1, col - 2, "## ##");
+  mvwprintw(win->p, row + 0, col - 2, "#   #");
+  mvwprintw(win->p, row + 1, col - 2, "## ##");
+  mvwprintw(win->p, row + 2, col - 2, "  #  ");
+  fw_show (win);
+
+  mvwprintw(win->p, row - 2, col - 2, " # # ");
+  mvwprintw(win->p, row - 1, col - 2, "#   #");
+  mvwprintw(win->p, row + 0, col - 2, "     ");
+  mvwprintw(win->p, row + 1, col - 2, "#   #");
+  mvwprintw(win->p, row + 2, col - 2, " # # ");
+  fw_show (win);
+}
+
+/* XXX quit end screen properly (free popup window) */
+static void
+fireworks (void)
+{
+  struct window pop;
+  int start, end, row, diff, flag, direction;
+
+  newpopup (&pop);
+  showpopup (&pop);
+  flag = 0;
+  for (;;)
+    {
+      do
+        {
+          start = rand() % (pop.siz.w - 3);
+          end = rand() % (pop.siz.w - 3);
+          start = (start < 2) ? 2 : start;
+          end = (end < 2) ? 2 : end;
+          direction = (start > end) ? -1 : 1;
+          diff = abs (start - end);
+        }
+      while (diff < 2 || diff >= pop.siz.h - 2);
+
+      for (row = 0; row < diff; row++)
+        {
+          mvwprintw (pop.p, pop.siz.h - row, start + (row * direction),
+                   (direction < 0) ? "\\" : "/");
+          if (flag++)
+            {
+              fw_show (&pop);
+              werase (pop.p);
+              flag = 0;
+            }
+        }
+      if (flag++)
+        {
+          fw_show (&pop);
+          flag = 0;
+        }
+      fw_explode (&pop, pop.siz.h - row, start + (diff * direction));
+      werase (pop.p);
+      fw_show (&pop);
+    }
+}
+
+void
+gfx_game_won (void)
+{
+  fireworks ();
+}
diff --git a/hero.c b/hero.c
new file mode 100644
index 0000000..040ec9b
--- /dev/null
+++ b/hero.c
@@ -0,0 +1,188 @@
+/*  $Id: hero.c,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "oldrunner.h"
+
+struct hero {
+  struct coord  pos, initpos;
+  int           state;
+};
+
+static struct hero  hero;
+
+void
+hero_init (void)
+{
+  hero.state = STATE_ALIVE;
+  hero_draw ();
+  usr_reset_input ();
+}
+
+void
+hero_draw (void)
+{
+  gfx_show_sprite (SP_HERO, &hero.pos);
+}
+
+void
+hero_set_pos (const struct coord *pos)
+{
+  coord_set_yx (&hero.pos, pos->y, pos->x);
+  if (hero.pos.y < 0)
+    lvl_won ();
+}
+
+void
+hero_set_initpos (const struct coord *pos)
+{
+  coord_set_yx (&hero.initpos, pos->y, pos->x);
+}
+
+void
+hero_get_pos (struct coord *pos)
+{
+  coord_set_yx (pos, hero.pos.y, hero.pos.x);
+}
+
+void
+hero_get_initpos (struct coord *pos)
+{
+  coord_set_yx (pos, hero.initpos.y, hero.initpos.x);
+}
+
+unsigned
+hero_at_pos (const struct coord *pos)
+{
+  if (coord_equal (&hero.pos, pos))
+    return 1;
+  return 0;
+}
+
+void
+check_collisions (const struct coord *hero_pos)
+{
+  if (lvl_got_hole_below (hero_pos))
+    {
+      struct coord below;
+
+      hero_trapped ();
+      coord_below (hero_pos, &below);
+      gfx_move_sprite (SP_HERO, hero_pos, &below);
+      hero_set_pos (&below);
+    }
+  else
+    {
+      if (foes_at_pos (hero_pos))
+        hero_die ();
+      money_check_at (hero_pos);
+      if (money_all_collected ())
+        lvl_draw_escape_ladder ();
+    }
+}
+
+void
+hero_move (enum move move)
+{
+  struct coord orig, dest;
+
+  /* First check if the move is valid with regards to current player state. */
+  if (hero.state & STATE_DIGGING)
+    return;
+    
+  if ((hero.state & STATE_FALLING) && (move != MOV_FALL))
+    move = MOV_FALL;
+  
+  /* Then check if the move is valid with regards to the level layout. */
+  hero_get_pos (&orig);
+  if (!lvl_valid_move (&orig, move, &dest, SP_HERO))
+    {
+      if (hero.state & STATE_FALLING)
+        hero.state &= ~STATE_FALLING;
+      return;
+    }
+  else
+    hero_set_pos (&dest);
+  
+  if (move == MOV_FALL || lvl_nothing_below (&hero.pos))
+    hero.state |= STATE_FALLING;
+  
+  gfx_move_sprite (SP_HERO, &orig, &hero.pos);
+  check_collisions (&hero.pos);
+}
+
+void
+hero_dig (enum move dir)
+{
+  struct coord heropos, digpos;
+
+  hero_get_pos (&heropos);
+  coord_set_yx (&digpos,
+                heropos.y + 1, heropos.x + (dir == MOV_RIGHT ? 1 : -1));
+  if (lvl_valid_dig (&digpos))
+    {
+      hero.state |= STATE_DIGGING;
+      bricks_break (&digpos);
+    }
+}
+
+void
+hero_dig_done (void)
+{
+  hero.state &= ~STATE_DIGGING;
+}
+
+void
+hero_trapped (void)
+{
+  hero.state |= STATE_TRAPPED | STATE_FALLING;
+  usr_reset_input ();
+}
+
+void
+hero_die (void)
+{
+  gfx_alert ();
+  game_lives_dec ();
+  lvl_lost ();
+}
+
+unsigned
+hero_wallup_at (const struct coord *pos)
+{
+  if (coord_equal (pos, &hero.pos))
+    {
+      hero_die ();
+      return 1;
+    }
+  
+  return 0;
+}
diff --git a/io.c b/io.c
new file mode 100644
index 0000000..171155a
--- /dev/null
+++ b/io.c
@@ -0,0 +1,86 @@
+/*  $Id: io.c,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include "oldrunner.h"
+
+FILE *
+io_fopen (const char *path)
+{
+  FILE *f;
+  
+  if (!(f = fopen (path, "r")))
+    {
+      ERROR_MSG ("Could not open game file \"%s\": %s",
+                 path, strerror (errno));
+      return 0;
+    }
+  
+  return f;
+}
+
+static char *line;
+
+void
+io_fclose (FILE *f)
+{
+  (void)fclose (f);
+  if (line)
+    xfree (line);
+  line = 0;
+}
+
+char *
+io_getln (FILE *f)
+{
+  size_t len;
+  char *buf;
+
+  line = 0;
+  if (!(buf = fgetln (f, &len)))
+    return 0;
+  if (buf[len - 1] == '\n')
+    buf[len - 1] = '\0';
+  else
+    {
+      /* EOF without EOL, copy and add the NUL */
+      line = xrealloc (line, 1, len + 1);
+      memcpy (line, buf, len);
+      line[len] = '\0';
+      buf = line;
+    }
+
+  return buf;
+}
diff --git a/levels/original.lvl b/levels/original.lvl
new file mode 100644
index 0000000..4a57f75
--- /dev/null
+++ b/levels/original.lvl
@@ -0,0 +1,3155 @@
+#-----------------------------------------------------------------------------
+level	"Level 0 (original)"
+author	"Broderbund"
+size	0x0
+
+#-----------------------------------------------------------------------------
+level	"Level 1 (original)"
+author	"Broderbund"
+size	26x16
+[                 |        ]
+[    $            |        ]
+[######H#######   |        ]
+[      H----------|    $   ]
+[      H    ##H   ######H##]
+[      H    ##H         H  ]
+[     &H    ##H       $&H  ]
+[##H####    ########H######]
+[  H                H      ]
+[  H          &     H      ]
+[########H##########H      ]
+[        H          H      ]
+[      $ H----------H  $   ]
+[    H#####         ######H]
+[    H        @  $        H]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 2 (original)"
+author	"Broderbund"
+size	26x16
+[   $                     H]
+[HXX#XXH          $       H]
+[H     H    H########H $  H]
+[H $ & H    H        H###VH]
+[H#X#X#H    H        H    |]
+[H     H----H-----  &H    |]
+[H     H    H    H###XXXXXH]
+[H     H    H $  H        H]
+[H   & H $  H####H        H]
+[X###X##X##XH        H##H##]
+[X###X      H        H  H  ]
+[X$  X      H  ------H  H $]
+[########H###XXX     H ####]
+[        H           H     ]
+[        H   @       H     ]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 3 (original)"
+author	"Broderbund"
+size	26x16
+[                         |]
+[---------   $            |]
+[H$      H#########H      |]
+[####H   H         HXXXXXXX]
+[    H & H    $    H       ]
+[    H#####H#####H##       ]
+[ $  H     H     H  --     ]
+[###H#     H  &  H    --   ]
+[   H    H#####H##      --$]
+[   H----H     H  &       #]
+[   H      H#########H     ]
+[   H      H#########H     ]
+[##H#########   $   #####H#]
+[##H######### H###H #####H#]
+[  H      @   H###H      H ]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 4 (original)"
+author	"Broderbund"
+size	26x16
+[|                         ]
+[|----------               ]
+[H    H     # $ #     H    ]
+[H$  HHH  $ ##### $  HHH  $]
+[ HH  H  HH       HH  H  HH]
+[ H HHHHH H       H HHHHH H]
+[ H  $&$  H   H   H  $&$  H]
+[H H#####H   HHH   H#####H ]
+[H  HHHHH HH  H  HH HHHHH  ]
+[H        H HHHHH H        ]
+[H   $    H  $&$  H    $   ]
+[H#####H   H#####H  H######]
+[H     H    HHHHH   H      ]
+[H     H            H      ]
+[H     H       $  @ H      ]
+[##########################]
+
+#-----------------------------------------------------------------------------
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+[#H#V#H#####H#####$######H#]
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+[##########################]
+
+#-----------------------------------------------------------------------------
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+[ |                        ]
+[ |                --------]
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+[####H###  H       H       ]
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+
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+[H##V##  HXXXXXXX#H  ##V##H]
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+
+#-----------------------------------------------------------------------------
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+[H #####V####   $H######H# ]
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+
+#-----------------------------------------------------------------------------
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+[H    H##############H    H]
+
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+
+#-----------------------------------------------------------------------------
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+[###############  $$$$$$H##]
+
+#-----------------------------------------------------------------------------
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+[|                        |]
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+
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+[XXXXXXXXXXXXXXXXXXXXXXXXXX]
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+[H###    H     &         H ]
+
+#-----------------------------------------------------------------------------
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+[############# H##H ######H]
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+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
+size	26x16
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+[#$#  #### H -   - H  #### ]
+[###       H   @   H  #### ]
+[          H  ###  H  #$$# ]
+[   ##     H  #$#  H  #### ]
+[   ##     H  #V#  H       ]
+[          H       H       ]
+
+#-----------------------------------------------------------------------------
+level	"Level 30 (original)"
+author	"Broderbund"
+size	26x16
+[X                        |]
+[X    $$$$& & &     @     |]
+[X#########V##############H]
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+[   X $  $       $     $X H]
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+[     XX############X     H]
+[                         H]
+[                         H]
+[$$$$  &          &    HX H]
+[#########XXXXXX######XXX H]
+
+#-----------------------------------------------------------------------------
+level	"Level 31 (original)"
+author	"Broderbund"
+size	26x16
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+[            |             ]
+[$           ||           $]
+[H H----------|---------H H]
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+[##H H------ ---------H H##]
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+[###V#####HH    HH#####V###]
+[###V######H    H######V###]
+[###V#######H@$H#######V###]
+[###&       H##H        ###]
+
+#-----------------------------------------------------------------------------
+level	"Level 32 (original)"
+author	"Broderbund"
+size	26x16
+[                          ]
+[##|####         ----- &   ]
+[  | --  &           XXXXXH]
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+[H###  #$---H-----#  ####H#]
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+[H$#   # H######H ##$H     ]
+[H#  $ # H#  $  H   #H     ]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 33 (original)"
+author	"Broderbund"
+size	26x16
+[#####|################ ###]
+[     |# ------            ]
+[|##| |# #$  #H#         & ]
+[| ##### #####H#####$ #H###]
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+[#######   # #H### ####H# #]
+[       &    #H### ## #H#$ ]
+[H#######H#H$#H### ## #H###]
+[H       H####H###$ # #H## ]
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+[H   H    H######  ####H   ]
+[H########H#######$ ######H]
+[H@       H $######  &    H]
+
+#-----------------------------------------------------------------------------
+level	"Level 34 (original)"
+author	"Broderbund"
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+[ -------$$######$$------- ]
+[H      $###HHHH###$      H]
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+[H     #VHH$$  $$HHV#     H]
+[H      V#HHH$$HHH#V      H]
+[H       ###HHHH###       H]
+[H@     &  ######  &      H]
+[########H        H########]
+
+#-----------------------------------------------------------------------------
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+
+#-----------------------------------------------------------------------------
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+[  $ $   H-     -H   -XXXXX]
+[###### H    $ @  H$  XXXXX]
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+
+#-----------------------------------------------------------------------------
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+[|     &                   ]
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+
+#-----------------------------------------------------------------------------
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+[H    H $XXXXXXXXX$ H     H]
+[HXXXXH XXXXXXXXXXX HXXXXXH]
+[$    HXXXXXXXXXXXXXH @   $]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+
+#-----------------------------------------------------------------------------
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+[H  &      @         H# $ H]
+[##########################]
+
+#-----------------------------------------------------------------------------
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+[# $#   #$    H- #   # -H $]
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+[      H    HXXXXXXXXH    H]
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+[#######XXXXX########H    H]
+
+#-----------------------------------------------------------------------------
+level	"Level 42 (original)"
+author	"Broderbund"
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+[H##    H###    H#########H]
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+[###$#H           H########]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[                          ]
+[ |                       |]
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+[#HXH H H H H  @H H H H HXH]
+[###########H#$#H##########]
+
+#-----------------------------------------------------------------------------
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+[ H H   H HH H HH H   H H H]
+[HHHHHHHHHHHHHHHHHHHHHHHHHH]
+
+#-----------------------------------------------------------------------------
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+
+#-----------------------------------------------------------------------------
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+[   H        @      H    $ ]
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+
+#-----------------------------------------------------------------------------
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+[ H##   $###X#H#XHX XHX  #|]
+[ H#          H $HX  H   $|]
+[$H#X###X#####X##XX##X#####]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[H H#     H $   HXH   $   H]
+[HH#      ####H HXXXXXXXXXX]
+[HH  &        | H   &      ]
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+
+#-----------------------------------------------------------------------------
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+[    -    - -      -  $  $ ]
+[-  - -  - H -    - H######]
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+[          H   --   H  &   ]
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+[H ##$$## H#     --$H #### ]
+[H $$##$$ H##  H#  #H##$$##]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 50 (original)"
+author	"Broderbund"
+size	26x16
+[H   -                H----]
+[H    H               H X  ]
+[H    H           &   H X$$]
+[H $  H###  $  $H####V#H###]
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+[H    H                 HHV]
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+[$      @    H   H  & #####]
+[############H   H#########]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
+size	26x16
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+[#XX##            |#XX###XX]
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+[H   X##X###XH##X |#X #XH X]
+[HX  X#XX###XH ##$|X  #XH X]
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+[HX###XX   &         @  HX#]
+[H###X  H##XX#XX#X#XX##XXX#]
+[H  $   H            &  X#X]
+
+#-----------------------------------------------------------------------------
+level	"Level 52 (original)"
+author	"Broderbund"
+size	26x16
+[        H                 ]
+[        H     $    &      ]
+[----  $ |    XXXXXXXXXXXXH]
+[H  XXXXXX                H]
+[H        ----  ----- HXXXX]
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+[XXXX##XXXH #X#XXXXXXXX  H ]
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+[       $ H     $        H ]
+[HXXXXXXXXX XXXXXXX      H ]
+[H                 ------H ]
+[H         @       &       ]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
+size	26x16
+[                          ]
+[         &     &      $ $|]
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+[H H$$H$$H$$H$$H  #  $H####]
+[H H#####H#####H   $H######]
+[H             @  H########]
+[H#########################]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[| $     $     ############]
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+[H#########################]
+[H     $           $ @     ]
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+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
+size	26x16
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+[H# $#H#$ #$ H###   H   #$ ]
+[H $##H$#HH#H#X#  & H  $ ##]
+[#########H H $############]
+
+#-----------------------------------------------------------------------------
+level	"Level 56 (original)"
+author	"Broderbund"
+size	26x16
+[$$----$$$ $$$-----------$$]
+[##    ###H###           ##]
+[##    ###H###           ##]
+[##    ###H###    $$$    ##]
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+[#########H################]
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+[  &     @H          &     ]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 57 (original)"
+author	"Broderbund"
+size	26x16
+[|#########################]
+[|------------------------ ]
+[|#XXX#XXX#XXX#XX#XH#X---#H]
+[|#    $    $   $  H   $H#H]
+[|$HXXXXXXXXXXXXXXXXXXXXHXH]
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+[| &     H XX    H  &  $H#H]
+[XXX#X###XXXXHXX#X#XX##XX#H]
+[@           H            H]
+
+#-----------------------------------------------------------------------------
+level	"Level 58 (original)"
+author	"Broderbund"
+size	26x16
+[####################     |]
+[ @##--- XX   $           |]
+[ #X  $ HXX######HH H#H H |]
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+[$ H#   $  #X# H# H H H H |]
+[#HH##V#X###X# H#$#|##H#H |]
+[#H      &     H#V#|# H H |]
+[#H##X#######XHHH #|# H H |]
+[#H #X#######XHH  #|# H H&H]
+[ H  X  $    XH   #|#HH###H]
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+[ #H#X#######XHXXX#|####  H]
+[ #H#     $  XX#   |   #  H]
+[ $H #XXXXXXXXX# & |   ####]
+
+#-----------------------------------------------------------------------------
+level	"Level 59 (original)"
+author	"Broderbund"
+size	26x16
+[   -- $        -$    $    ]
+[  H  ##       H ##   ##H  ]
+[  H        $& H        H $]
+[ $H--      ##$H  &$    HH#]
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+[  ## H- --&$--H         H ]
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+[ $ H     $   ## $    H$   ]
+[H##H    ##      ##   H##  ]
+[H                         ]
+[H            @            ]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 60 (original)"
+author	"Broderbund"
+size	26x16
+[               -----      ]
+[          ----H     &$  $ ]
+[     ----H      & $ #####H]
+[ ---H         $ #####  $ H]
+[H         @$ ####   $&#V#H]
+[H  V#V ## ####  $ #V### #H]
+[H  $ $ $  #  $ ##V#  $  #H]
+[H ## V#V  # ####   $###H#H]
+[H  $ $ $  # #  $ #V#V #H#H]
+[H  ### V# # # ##V#  $ #H#H]
+[H  $ $ $  # # #  $ ##H#H#H]
+[H #V V##  # # # #####H#H#H]
+[H  $ $ $  # # # #   #H#H#H]
+[H  ##V V# # # # # $ #H#H#H]
+[H        &# # # #####H#H#H]
+[###########          H H H]
+
+#-----------------------------------------------------------------------------
+level	"Level 61 (original)"
+author	"Broderbund"
+size	26x16
+[         |                ]
+[         |                ]
+[ $ & $  XHX   --------@   ]
+[HX###X# XH$          ###  ]
+[HX      XHX    $         $]
+[HX---   XHX  ####---     H]
+[HX     $XHX  $        $  H]
+[H  $X##XXHX###      H### H]
+[HX#XX   XHX      &$ H#   H]
+[HX------$HX   ########   H]
+[HX    $ XHX   $       $  H]
+[HX   X##XHX--####--  H#  H]
+[HX$     XHX        $ H   H]
+[HX##    XHX      #####   H]
+[H    &   H               H]
+[X###X###XXXX###X####XX#XXX]
+
+#-----------------------------------------------------------------------------
+level	"Level 62 (original)"
+author	"Broderbund"
+size	26x16
+[#|####|#####|#####|#####|#]
+[ |$&  |     |   $ | $   | ]
+[H########V####V##########H]
+[H#$       &$        $   #H]
+[H#####V########V#######H#H]
+[H#  $          $      #H#H]
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+[H#H#H###V##V###V#####H#H#H]
+[H#H#H   $        $   H#H#H]
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+[H#H   $         $      H#H]
+[H###V####V####V######V###H]
+[H   &   $    @     $  &  H]
+[##########################]
+
+#-----------------------------------------------------------------------------
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+
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+[ # $# H#  #    H  #$ #  #H]
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+
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+
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+[        H#####  H####HV###]
+[    $ $ H#######H####HV###]
+[################H $$ HV###]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[                         |]
+[                         |]
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+[ H @      #  H &   HV#### ]
+
+#-----------------------------------------------------------------------------
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+[@ H#$##$$$$$$ H$     H   H]
+[XXXXX####XXXXXXX##########]
+
+#-----------------------------------------------------------------------------
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+[   H @####   $ H###H  &H #]
+[##########################]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[  $H$   |     ||   ||XXX  ]
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+[H#####H############H#####H]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
+size	26x16
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+[H####### H########H######H]
+[H $###   H      ##H      H]
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+
+#-----------------------------------------------------------------------------
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+[##########################]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
+size	26x16
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+[H     H#H           #H## #]
+[##########################]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[ ---      $$$$$$$     --- ]
+[H   ##################   H]
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+[H&XH##################HX&H]
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+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[XXXXH H# ###HH####V####H |]
+[XXXXXXHHH# #HH#        H |]
+[        H H HH         H |]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 79 (original)"
+author	"Broderbund"
+size	26x16
+[                    |     ]
+[   &           X    |  & $]
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+[H      ---   HX$##H#|#H###]
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+[H#######V#H  #######H##$#H]
+[H   ##$   H ##      H ###H]
+[H#########H##########    H]
+
+#-----------------------------------------------------------------------------
+level	"Level 80 (original)"
+author	"Broderbund"
+size	26x16
+[     -----------$         ]
+[XXXXX   ##     #XXXXXX#H  ]
+[X-----  $$     #      #H  ]
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+[    #$$#H              H  ]
+[    ##V#H              H  ]
+[        H    &  @      H  ]
+[###XXXX###XXXX###XXXX###XX]
+
+#-----------------------------------------------------------------------------
+level	"Level 81 (original)"
+author	"Broderbund"
+size	26x16
+[|                         ]
+[|                         ]
+[XXXXXH               HXXXX]
+[#    H   &         & H    ]
+[#    H#######XXX#####H    ]
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+[# #$#H$ $--$# ### #$#H$ $-]
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+[#   #H#$#         ###H#$# ]
+[#    H-H             H-H  ]
+[#    H    @          H    ]
+[##XX#########XXXX#########]
+
+#-----------------------------------------------------------------------------
+level	"Level 82 (original)"
+author	"Broderbund"
+size	26x16
+[XXXXXXXXXXX | XXXXXXXXXXXX]
+[--------H#X-|-X#H---------]
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+[H$  H      H H      H  $ H]
+[H   H  $   H H  $   H    H]
+[########X#######X######XXX]
+
+#-----------------------------------------------------------------------------
+level	"Level 83 (original)"
+author	"Broderbund"
+size	26x16
+[----$                $$@#|]
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+[#H #H #H          H#V#   |]
+[ H  H  H     &    H      |]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 84 (original)"
+author	"Broderbund"
+size	26x16
+[                    |     ]
+[                    |     ]
+[&       $#$         |#$   ]
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+[##H####H########H#####H###]
+[##H   #H    # @ H #   H  $]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 85 (original)"
+author	"Broderbund"
+size	26x16
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+[  #####  #H   ###V#       ]
+[          H      @        ]
+[X#X#X#X#X#X#X#X#X#X#X#X#X#]
+
+#-----------------------------------------------------------------------------
+level	"Level 86 (original)"
+author	"Broderbund"
+size	26x16
+[|                        |]
+[|------------------------|]
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+[H H#   $# ######H#H##$#  H]
+[H&H#    #&## $##H H####  H]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 87 (original)"
+author	"Broderbund"
+size	26x16
+[ |                        ]
+[  |                       ]
+[ H$    $H      $H     $H  ]
+[ $H    H$      H$     H$  ]
+[ H$    $H      $H     $H  ]
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+[ H$    $H      $H     $H  ]
+[ $H    H$      H$     H$  ]
+[@H$    $H     &$H   & $H &]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 88 (original)"
+author	"Broderbund"
+size	26x16
+[ --------#         &      ]
+[H        #  $   H###H # #H]
+[H VVVVVV ####HX HX  H # #H]
+[H VVVVVV #  $HX HXHXH # #H]
+[H VVVVVV #H###X HXHXH # #H]
+[H VV$$VV #H $ X HXHXH # #H]
+[H VVVVVV ####HX HXHXH # #H]
+[H VVVVVV #  $HX HXHXH #$#H]
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+[H########$HX#XXXXXXXXX###H]
+[HXXXXXXXXXX      $ &$    H]
+[H @        H##############]
+
+#-----------------------------------------------------------------------------
+level	"Level 89 (original)"
+author	"Broderbund"
+size	26x16
+[|#XXX#XX##X##XX#X XX#XX##X]
+[H|||||X|X#XX#|X||||||XX###]
+[H @ $|X| $$$ | |  & | $  |]
+[HX#X#|X|#X##XH#HX###H####|]
+[H $  |X| $$$ H H $##H###X|]
+[HX#X||X| ### H H XX$H$##$|]
+[H||| $X|     H$H  #XHX#XX|]
+[H   ##X|  $  HXH  $ H----|]
+[H$ &| X| ### HXH  #XH  $X#]
+[H####HX|  #  H$H  # H ##$|]
+[H  X HX||||||HXH  # H   XH]
+[H  X H---------H$&# HX$$$H]
+[H  X$HX####H $XH##########]
+[H  X#HX   #####X#X-------H]
+[H $  H  $   $       & $$$H]
+[######X#XXXXXXXXXXXX#XXXXH]
+
+#-----------------------------------------------------------------------------
+level	"Level 90 (original)"
+author	"Broderbund"
+size	26x16
+[                  H   |   ]
+[        --        H   |   ]
+[$   $  -- H     --H  $|&  ]
+[####H--   H &  ---#V##H#H ]
+[    H  X#V#H  ---$#$  |#H ]
+[VV###H  $  H-HXX X######H ]
+[V$   H  X    H   XXXX --H ]
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+[  H#$H    H  $   H   HX   ]
+[  H VHX   H#V####H##XHX   ]
+[  H -H  $ H  $   H  XHX   ]
+[  HX $  X H####V#H X$H$X  ]
+[  H  X    H  $   H XXHXX  ]
+[  H       H##V###H  &H    ]
+[##########H  &  @H########]
+
+#-----------------------------------------------------------------------------
+level	"Level 91 (original)"
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+[XXXXXXXXXXXXXXXXXXXXXXXXXX]
+
+#-----------------------------------------------------------------------------
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+
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+
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+[H##H  V#HH##$--------$  #|]
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+#-----------------------------------------------------------------------------
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+[#X####X#H  H  H###X#######]
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+author	"Broderbund"
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+[########H$$$$$$$$H########]
+
+#-----------------------------------------------------------------------------
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+[#H##HX#H###VH##X#V#####H##]
+[$H$$H& H    H        $$H$$]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[$HXH#H#HXH$#H#$HXH#H#HXH$#]
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+[$HXH#H#HXH$#H#$HXH#H#HXH$#]
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+[XH H#H#H&HHXHXHH&H#H#H HXX]
+[HXHXHHHXHXHHHHHXHXHHHXHXHH]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[##########X######X #######]
+
+#-----------------------------------------------------------------------------
+level	"Level 111 (original)"
+author	"Broderbund"
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+author	"Broderbund"
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+[                   XXXXXXH]
+[------------  &          H]
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+[XXXHXHX @        H  ## |#V]
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+[H     #          H        ]
+[X#X#########XXXX#X#XXX#XXX]
+
+#-----------------------------------------------------------------------------
+level	"Level 113 (original)"
+author	"Broderbund"
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+[|                         ]
+[|                         ]
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+[       H H H   H      ###H]
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+[##########################]
+
+#-----------------------------------------------------------------------------
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+[ ##  ###H######  H######$ ]
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+[ ###### H########H #V#### ]
+[ #####  H########H  V###  ]
+[ &  &   H   @    H   &  & ]
+[########|###HH###|########]
+
+#-----------------------------------------------------------------------------
+level	"Level 115 (original)"
+author	"Broderbund"
+size	26x16
+[                         |]
+[-------- #H         $$   |]
+[   $#$  H#H#X#X#X#XVX#X#X#]
+[  $# #$ H#H  $   $  ------]
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+[ #     VH#XXXXXXXXXH  $  H]
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+[H   $ $ H########  $  $  H]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 116 (original)"
+author	"Broderbund"
+size	26x16
+[#|#X#X#X#X#XX# #|#X ##|###]
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+[X|      #X  H   | $  &|  H]
+[##V##H------H##V#########H]
+[@ $  H$H#X$ H X  X#X  #  H]
+[####H##HX#X  $ X    X ---H]
+[ X# HX HXXX#XX# X  -----#H]
+[ &  H  H  #---------X $##H]
+[VX##H  H$XX#$ #X$  X  ## H]
+[V X H  $X#XX#$ X#---H#   H]
+[ #  H $X $$$ X$  X  H    H]
+[----H$X H#X#  X$   #H#####]
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+[ H#X#$$ H--H  H ####H  X  ]
+[ H$ $##$&$$H--H  ##XH   &$]
+[###########H $H$##########]
+
+#-----------------------------------------------------------------------------
+level	"Level 117 (original)"
+author	"Broderbund"
+size	26x16
+[           ##            |]
+[    $ & $  XX     $&  $  |]
+[H############H############]
+[H--------- XXH            ]
+[          H##H  --------- ]
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+[  - #   #H #####   $H#####]
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+[##$H###V#H XX H##########H]
+[$##H &   H$##$H#$        H]
+[###########XX###XXXXXXXXXX]
+
+#-----------------------------------------------------------------------------
+level	"Level 118 (original)"
+author	"Broderbund"
+size	26x16
+[---------------           ]
+[     $         H&         ]
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+[   HH        HH     HHHHH ]
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+[HHHH HH   HHHH HH   HHHHH ]
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+
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+[H$#### $ ##H## $ #H#$--  H]
+[H## $#####$H$#####H##$ ##H]
+[##################H  #####]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[#####H|            |H#####]
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+[H#V#HHH$          $HHH###H]
+[##HHH$|            |$HHH##]
+[#####H|       @    |H#####]
+
+#-----------------------------------------------------------------------------
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+[|      &          $       ]
+[| XXHXXXX         XXXHXXXX]
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+[#HX-------H   #  #  #H###H]
+[ H             VV    H   H]
+[ H                   H   H]
+[XXXXXX#######XXXX####XXXXX]
+
+#-----------------------------------------------------------------------------
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+[#####| H#  #$  H H#   #  H]
+[#   #| H#######H H#V###V#H]
+[# $  |#H      #H#H  #  $ H]
+
+#-----------------------------------------------------------------------------
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+[|                        |]
+[|                        |]
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+[#######H----H####H$---H #H]
+[#  $   H  $ H##$#H#  #H$#H]
+[#################H####H##H]
+
+#-----------------------------------------------------------------------------
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+[V $V             HV$$# ## ]
+[V##V             HV###    ]
+[             &   H  @     ]
+[##########################]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[H## H##$#####$##H-  - - -H]
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+[H## H###$###$###H-  - - -H]
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+[H## H###$###$###H $ - - -H]
+[H&  H###########H     @   ]
+[H###H##$#####$##H#########]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
+size	26x16
+[      |                  |]
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+[H##$### X$   H#H##   $ $ H]
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+[H@  H#H  H# $#H #########H]
+[###############          H]
+
+#-----------------------------------------------------------------------------
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+[H # $ #$   &$ #$  #$   # H]
+[H ###V##########V#####V# H]
+[H           @      &     H]
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+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[  &H        HH        H & ]
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+[##$H$##  ###HH###  ##$H$##]
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+[       @    HH            ]
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+
+#-----------------------------------------------------------------------------
+level	"Level 130 (original)"
+author	"Broderbund"
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+[HX $#########HX       H   ]
+[H ######$    HX###########]
+
+#-----------------------------------------------------------------------------
+level	"Level 131 (original)"
+author	"Broderbund"
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+[H-H& #H# ##### #H#    &H-H]
+[H---- H -     - H ------ H]
+[H    #H# ##### #H#       H]
+
+#-----------------------------------------------------------------------------
+level	"Level 132 (original)"
+author	"Broderbund"
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+[|                         ]
+[|-------------------------]
+[|       V###H###V         ]
+[|    $V#V   H   V## $     ]
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+[ H          H  @       H  ]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 133 (original)"
+author	"Broderbund"
+size	26x16
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+[ #V#V##  H#V#V##  H#V##V# ]
+[         H   @    H       ]
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+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[##########################]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[      |                   ]
+[      |   HXXXXXXXXXXXXXXX]
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+[####H   &  #H H$HX  $H# &H]
+
+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+#-----------------------------------------------------------------------------
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+author	"Broderbund"
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+[|   $  $   $& &$   $   $  ]
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+[###H### #####H##### ###H##]
+[$  H  $ $    H    $  $ H $]
+[   H         H @       H  ]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 138 (original)"
+author	"Broderbund"
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+[            |             ]
+[          & |  $--        ]
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+[H           H        ---  ]
+[H           H       H  $  ]
+[H        $  H       H ### ]
+[############H   $&  H  $  ]
+
+#-----------------------------------------------------------------------------
+level	"Level 139 (original)"
+author	"Broderbund"
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+[|##############|  X $H# $ ]
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+[#H##################H####H]
+
+#-----------------------------------------------------------------------------
+level	"Level 140 (original)"
+author	"Broderbund"
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+[H#H#H#H##H#H##H#H##H#H#H#H]
+[H H#H H##H@H##H&H##H H#H H]
+
+#-----------------------------------------------------------------------------
+level	"Level 141 (original)"
+author	"Broderbund"
+size	26x16
+[---------        ---------]
+[H        ########        H]
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+[H XXX################XXX H]
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+[   H  VVVVVVVVVVVVVV  H   ]
+[   H   VVVVVVVVVVVV   H   ]
+[   H     VVVVVVVV     H   ]
+
+#-----------------------------------------------------------------------------
+level	"Level 142 (original)"
+author	"Broderbund"
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+[---------                 ]
+[         H     #   - -    ]
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+[|    ####$#H##$ $##H     $]
+[|$  $##### H  ############]
+
+#-----------------------------------------------------------------------------
+level	"Level 143 (original)"
+author	"Broderbund"
+size	26x16
+[########|#################]
+[@ X  XXX|   XH #   H----- ]
+[#H   H XHXX XH$#HXXH      ]
+[$HXX#H XHXX  H  H        $]
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+[H ### XXHX###          H  ]
+[H    &  HX$ XH $    $  H  ]
+[#########X##$HXX####XXXH $]
+
+#-----------------------------------------------------------------------------
+level	"Level 144 (original)"
+author	"Broderbund"
+size	26x16
+[                          ]
+[     ---|      ---    -   ]
+[H   H  -#XXXXXX   #### XXH]
+[H$  H$  #   X$           H]
+[##H-XXH XH  XX#X VVVV## HV]
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+[H##-HXX XHH XX#H V    V H ]
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+[##H-XXH X  HH XH   ##H--H$]
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+[##H-XXH X     XH#  $ $ #HV]
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+[H##-XXX X&$$H# H#H $ $  H ]
+[H @     ######XX##X#X#X#X#]
+
+#-----------------------------------------------------------------------------
+level	"Level 145 (original)"
+author	"Broderbund"
+size	26x16
+[      &  |       |  &     ]
+[          |     |         ]
+[           |   |          ]
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+[   ## H    $ H $    H ##  ]
+[   # H##HHHHH#HHHHH##H #  ]
+[ $  H###HH#HHHHH#HH###H@$ ]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 146 (original)"
+author	"Broderbund"
+size	26x16
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+[$##H # #####  # H##$# H###]
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+[#$#H # #####  # H#$## ###H]
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+[$##H # #####  # H#### H###]
+[###H #  ##### # H ### H $ ]
+[#$#H # #####  # H#### ###H]
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+[$##H #$#####$$# H#### H###]
+[###H ########## H##$  H $ ]
+[#$#H ########## H#### ###H]
+[###H  &     &   H####  & H]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 147 (original)"
+author	"Broderbund"
+size	26x16
+[              |           ]
+[ &        -@  |     -     ]
+[ HH      H H  |    H H   H]
+[H$H     H   H |   H   H  H]
+[ #HH   H #$# H|  H #$# H-H]
+[ #H ---H&### H---H&#H#   H]
+[X#H#V##X##X##X##V##XH#V##H]
+[# H V  #  $###  $# #H V  H]
+[#-H-V--# H#----H----H-#--H]
+[# H V  # H#  # HVH #& $  H]
+[#VHX#VX##H##X##XVHX##X#V#H]
+[ V##   ##H##   #VH##   V#H]
+[  H-- --#H#-- --VH#-- --#H]
+[  H  $  #H#  $  #H   $  #H]
+[ $H  X  #H#  X  #H#  X  #H]
+[#VHV#X## H ##X## H ##X#V H]
+
+#-----------------------------------------------------------------------------
+level	"Level 148 (original)"
+author	"Broderbund"
+size	26x16
+[         && || &&         ]
+[        $$$|##|$$$        ]
+[  $$$$$|XXXXXXXXXX|$$$$$  ]
+[ |######          ######| ]
+[ |||                  ||| ]
+[   |                  |   ]
+[   |                  |   ]
+[   |                  |   ]
+[   |                  |   ]
+[   |                  |   ]
+[   |                  |   ]
+[   |                  |   ]
+[   |                  |   ]
+[   |                  |   ]
+[   |           @      |   ]
+[#######X#####XX#####X#####]
+
+#-----------------------------------------------------------------------------
+level	"Level 149 (original)"
+author	"Broderbund"
+size	26x16
+[                          ]
+[        H##    ##H        ]
+[       H##      ##H       ]
+[      H##        ##H      ]
+[     H##$  &     $##H     ]
+[ $--H################H--$&]
+[H#H   ##$        $##   H#H]
+[HH#H   ## $    $ ##   H#HH]
+[$HH#H&  ####  ####   H#HH$]
+[ $HH#H   ###  ###   H#HH$ ]
+[  $HH#H   ##$@##   H#HH$  ]
+[   $HH#H   ####   H#HH$   ]
+[    $HH#H   HH   H#HH$    ]
+[     $HH#H  HH  H#HH$     ]
+[$ &   $H##H HH H##H$   & $]
+[##########################]
+
+#-----------------------------------------------------------------------------
+level	"Level 150 (original)"
+author	"Broderbund"
+size	26x16
+[ ---        &@        --- ]
+[H   ##H$          $H##   H]
+[H   ##H$          $H##   H]
+[H    ##H$        $H##    H]
+[H$$  ##H$        $H## $ $H]
+[H###H ##H$      $H## H###H]
+[H$ $H ##H$      $H## H$ $H]
+[H####H ##H$    $H## H####H]
+[H$&&$H ##H$    $H## H$&&$H]
+[H#####H ##H$  $H## H#####H]
+[H$   $H ##H$  $H## H$   $H]
+[H######H ##H$$H## H######H]
+[H$    $H ######## H$    $H]
+[H#######H ###V## H#######H]
+[H$     $H $$#V$$ H$     $H]
+[############XX##|#########]
+
diff --git a/lvl.c b/lvl.c
new file mode 100644
index 0000000..addea43
--- /dev/null
+++ b/lvl.c
@@ -0,0 +1,602 @@
+/*  $Id: lvl.c,v 1.3 2012/01/31 14:36:29 culot Exp $  */
+
+/*
+ * Copyright (c) 2010, 2012 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#include "oldrunner.h"
+
+struct lvlattr {
+  struct size    siz;  
+  char          *name;
+  char          *author;
+};
+
+/* Doubly-linked to store information about game levels. */
+TAILQ_HEAD(levels_head, level) levels;
+
+struct level {
+  struct lvlattr       attr;
+  char               **lay;
+  TAILQ_ENTRY(level)   levelsp;
+};
+
+static struct level    *curlvl;
+
+static enum sprite char2sprite[256] = {
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  
+/*   !  "     #          $     %    &     '  (  )  *  +  ,     -     .  / */  
+  0, 0, 0, SP_BRICK, SP_MONEY, 0, SP_FOE, 0, 0, 0, 0, 0, 0, SP_ROPE, 0, 0,
+  
+/*0  1  2  3  4  5  6  7  8  9  :  ;  <  =  >  ? */  
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  
+/*   @     A  B  C  D  E  F  G      H      I  J  K  L  M  N  O */  
+  SP_HERO, 0, 0, 0, 0, 0, 0, 0, SP_LADDER, 0, 0, 0, 0, 0, 0, 0,
+  
+/*P  Q  R  S  T  U        V        W      X      Y  Z  [  \  ]  ^  _ */  
+  0, 0, 0, 0, 0, 0, SP_FAKE_BRICK, 0, SP_CIMENT, 0, 0, 0, 0, 0, 0, 0,
+  
+/*`  a  b  c  d  e  f  g  h  i  j  k  l  m  n  o */  
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  
+/*p  q  r  s  t  u  v  w  x  y  z  {          |         }  ~    */  
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, SP_ESCAPE_LADDER, 0, 0, 0,
+  
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+static unsigned obj_is_static[SPRITES] = {
+  1,  /* SP_NONE */
+  1,  /* SP_BRICK */
+  1,  /* SP_BRICK_SCRACK */
+  1,  /* SP_BRICK_LCRACK */
+  1,  /* SP_BRICK_BROKEN */
+  1,  /* SP_CIMENT */
+  1,  /* SP_FAKE_BRICK */
+  1,  /* SP_LADDER */
+  1,  /* SP_ROPE */
+  0,  /* SP_ESCAPE_LADDER */
+  0,  /* SP_MONEY */
+  0,  /* SP_HERO */
+  0,  /* SP_FOE */
+  0,  /* SP_INVALID */
+};
+
+static unsigned obj_is_obstacle[SPRITES] = {
+  0,  /* SP_NONE */
+  1,  /* SP_BRICK */
+  1,  /* SP_BRICK_SCRACK */
+  1,  /* SP_BRICK_LCRACK */
+  0,  /* SP_BRICK_BROKEN */
+  1,  /* SP_CIMENT */
+  0,  /* SP_FAKE_BRICK */
+  0,  /* SP_LADDER */
+  0,  /* SP_ROPE */
+  0,  /* SP_ESCAPE_LADDER */
+  0,  /* SP_MONEY */
+  0,  /* SP_HERO */
+  0,  /* SP_FOE */
+  0,  /* SP_INVALID */
+};
+
+static void
+init_layout (struct level *l)
+{
+  int i;
+  
+  l->lay = xcalloc (l->attr.siz.h, sizeof (char *));
+  for (i = 0; i < l->attr.siz.h; i++)
+    l->lay[i] = xmalloc (l->attr.siz.w);
+}
+
+static enum sprite
+sprite_at_pos (const struct coord *pos)
+{
+  if (pos->y >= curlvl->attr.siz.h || pos->x >= curlvl->attr.siz.w)
+    return SP_INVALID;
+
+  return char2sprite[(unsigned char)curlvl->lay[pos->y][pos->x]];
+}
+
+enum sprite
+lvl_decor_at_pos (const struct coord *pos)
+{
+  enum sprite sp;
+
+  sp = sprite_at_pos (pos);
+  return obj_is_static[sp] || (sp == SP_ESCAPE_LADDER
+                               && money_all_collected ())
+    ? sp : SP_NONE;
+}
+
+unsigned
+lvl_set_name (const char *name)
+{
+  if (!(curlvl->attr.name = xstrdup (name)))
+    return 0;
+  return 1;
+}
+
+unsigned
+lvl_set_author (const char *author)
+{
+  if (!(curlvl->attr.author = xstrdup (author)))
+    return 0;
+  return 1;
+}
+
+/* The size must be of the form AxB. */
+unsigned
+lvl_set_size (char *sizstr)
+{
+  const char *errstr;
+  char *x, *y;
+  int sizex, sizey;
+
+  x = sizstr;
+  if (!(y = strchr (sizstr, 'x')))
+    return 0;
+  *y++ = '\0';
+  
+  sizex = strtonum (x, 0, LEVEL_MAX_WIDTH, &errstr);
+  if (errstr)
+    return 0;
+  sizey = strtonum (y, 0, LEVEL_MAX_HEIGHT, &errstr);
+  if (errstr)
+    return 0;
+
+  curlvl->attr.siz.h = sizey;
+  curlvl->attr.siz.w = sizex;
+
+  return 1;
+}
+
+unsigned
+lvl_set_row (int rownum, int rowlen, const char *row)
+{
+  if (rowlen != curlvl->attr.siz.w)
+    {
+      fprintf (stderr, "Incorrect row length (was: %d, expected: %d)!\n",
+               rowlen, curlvl->attr.siz.w);
+      return 0;
+    }
+  if (rownum >= curlvl->attr.siz.h)
+    {
+      fprintf (stderr, "Level row number too large (was: %d, max: %d)!\n",
+               rownum, curlvl->attr.siz.h);
+      return 0;
+    }
+  if (!curlvl->lay)
+    init_layout (curlvl);
+  
+  memcpy (curlvl->lay[rownum], row, rowlen);
+  
+  return 1;
+}
+
+unsigned
+lvl_width (void)
+{
+  return curlvl->attr.siz.w;
+}
+
+unsigned
+lvl_height (void)
+{
+  return curlvl->attr.siz.h;
+}
+
+unsigned
+lvl_add_new (void)
+{
+  struct level *lvl;
+
+  lvl = xmalloc (sizeof *lvl);
+  bzero (lvl, sizeof *lvl);
+  lvl->attr.siz.w = LEVEL_DEFAULT_WIDTH;
+  lvl->attr.siz.h = LEVEL_DEFAULT_HEIGHT;
+  TAILQ_INSERT_TAIL (&levels, lvl, levelsp);
+  curlvl = lvl;
+
+  return 1;
+}
+             
+void
+lvl_init (void)
+{
+  TAILQ_INIT (&levels);
+  money_init ();
+  foes_init ();
+  bricks_init ();
+}
+
+static void
+dynaobj_free (void)
+{
+  money_free ();
+  foes_free ();
+  bricks_free ();
+}
+
+static void
+lvl_load_dynaobjs (void)
+{
+  struct coord lvlpos;
+  int r, c;
+
+  dynaobj_free ();
+    
+  for (r = 0; r < curlvl->attr.siz.h; r++)
+    {
+      lvlpos.y = r;
+      for (c = 0; c < curlvl->attr.siz.w; c++)
+        {
+          lvlpos.x = c;
+          switch (sprite_at_pos (&lvlpos))
+            {
+            case SP_HERO:
+              hero_set_initpos (&lvlpos);
+              break;
+            case SP_MONEY:
+              money_add (&lvlpos);
+              break;
+            case SP_FOE:
+              foes_add (&lvlpos);
+              break;
+            default:
+              /* DO NOTHING */
+              break;
+            }
+        }
+    }
+}
+
+static void
+draw_hero_init_pos (void)
+{
+  struct coord pos;
+
+  hero_get_initpos (&pos);
+  hero_set_pos (&pos);
+}
+
+static void
+draw_static_objects (void)
+{
+  int r;
+
+  for (r = 0; r < curlvl->attr.siz.h; r++)
+    {
+      struct coord pos;
+      int c;
+
+      pos.y = r;
+      for (c = 0; c < curlvl->attr.siz.w; c++)
+        {
+          enum sprite sp;
+          
+          pos.x = c;
+          sp = sprite_at_pos (&pos);
+          gfx_show_sprite (obj_is_static[sp] ? sp : SP_NONE, &pos);
+        }
+    }
+}
+
+static void
+draw_level (void)
+{
+  draw_static_objects ();
+  money_draw ();
+  bricks_draw ();
+  foes_draw ();
+}
+
+static void
+lvl_update_new (void)
+{
+  draw_hero_init_pos ();
+  draw_level ();
+}
+
+static void
+show_level_info (void)
+{
+  char title[BUFSIZ], info[BUFSIZ];
+
+  (void)snprintf (title, sizeof title, "LEVEL #%d", game_level_num ());
+  (void)snprintf (info, sizeof info,
+                  "\t  Name:  %s\n\n"
+                  "\tAuthor:  %s\n",
+                  curlvl->attr.name, curlvl->attr.author);
+  gfx_popup (title, info);
+}
+
+static void
+load_level (void)
+{
+  lvl_load_dynaobjs ();
+  lvl_update_new ();
+  hero_init ();
+  show_level_info ();  
+}
+
+static void
+lvl_select_current (int lvlnum)
+{
+  curlvl = TAILQ_FIRST (&levels);
+  while (lvlnum)
+    {
+      curlvl = TAILQ_NEXT (curlvl, levelsp);
+      EXIT_IF (curlvl == 0, "lvl_select_current: invalid level number");      
+      lvlnum--;
+    }
+}
+
+/* Load the level, assign initial player position and draw it. */
+unsigned
+lvl_load (int levelnum)
+{
+  lvl_select_current (levelnum);
+  load_level ();
+  
+  return 1;
+}
+
+unsigned
+lvl_load_next (void)
+{
+  if (!(curlvl = TAILQ_NEXT (curlvl, levelsp)))
+    game_won ();
+  game_level_inc ();  
+  load_level ();
+  
+  return 1;
+}
+
+unsigned
+lvl_load_prev (void)
+{
+  struct level *previous_lvl;
+  
+  if (!(previous_lvl = TAILQ_PREV (curlvl, levels_head, levelsp)))
+    return 0;
+
+  curlvl = previous_lvl;
+  game_level_dec ();  
+  load_level ();
+  
+  return 1;
+}
+
+void
+lvl_won (void)
+{
+  lvl_load_next ();
+}
+
+void
+lvl_lost (void)
+{
+  load_level ();
+}
+
+void
+lvl_draw_escape_ladder (void)
+{
+  int r;
+
+  for (r = 0; r < curlvl->attr.siz.h; r++)
+    {
+      struct coord pos;
+      int c;
+
+      pos.y = r;
+      for (c = 0; c < curlvl->attr.siz.w; c++)
+        {
+          pos.x = c;
+          if (sprite_at_pos (&pos) == SP_ESCAPE_LADDER)
+            gfx_show_sprite (SP_ESCAPE_LADDER, &pos);
+        }
+    }
+}
+
+static unsigned
+valid_decor_move (const struct coord *pos_orig, const struct coord *pos_dest,
+                  enum move wanted_move, enum sprite sp)
+{
+  enum sprite sp_orig, sp_dest;
+
+  sp_orig = lvl_decor_at_pos (pos_orig);
+  if (wanted_move == MOV_FALL && sp_orig == SP_ROPE)
+    return 0;
+
+  if (pos_dest->y < 0 && sp_orig == SP_ESCAPE_LADDER)
+    return 1;
+  
+  sp_dest = lvl_decor_at_pos (pos_dest);
+  switch (sp_dest)
+    {
+    case SP_NONE:
+    case SP_ROPE:
+      if (wanted_move == MOV_UP)
+        return sp_orig == SP_LADDER || sp_orig == SP_ESCAPE_LADDER ? 1 : 0;
+      else
+        return 1;
+
+    case SP_BRICK:
+      return wanted_move != MOV_UP && bricks_broken_at (pos_dest) ? 1 : 0;
+      
+    case SP_CIMENT:
+      return 0;
+      
+    case SP_LADDER:
+      return wanted_move == MOV_FALL ? 0 : 1;
+      
+    case SP_ESCAPE_LADDER:
+      if (sp == SP_HERO)
+        return wanted_move == MOV_FALL ? 0 : 1;
+      else
+        return wanted_move == MOV_UP ? 0 : 1;
+      
+    default:
+      return 0;
+      /* NOTREACHED */
+    }
+}
+
+unsigned
+lvl_valid_move (const struct coord *orig, enum move wanted_move,
+                struct coord *dest, enum sprite sp)
+{
+  if (wanted_move == MOV_NONE)
+    return 0;
+
+  coord_compute (orig, wanted_move, dest);
+  if (dest->y >= (int)curlvl->attr.siz.h
+      || dest->x < 0 || dest->x >= curlvl->attr.siz.w)
+    return 0;
+  
+  return valid_decor_move (orig, dest, wanted_move, sp);
+}
+
+unsigned
+lvl_valid_dig (const struct coord *pos)
+{
+  switch (lvl_decor_at_pos (pos))
+    {
+    case SP_BRICK:
+      return 1;
+    default:
+      return 0;
+    }
+}
+
+unsigned
+lvl_nothing_below (const struct coord *pos)
+{
+  struct coord below;
+
+  coord_below (pos, &below);
+  return lvl_decor_at_pos (&below) == SP_NONE ? 1 : 0;
+}
+
+unsigned
+lvl_obstacle_at (const struct coord *pos)
+{
+  enum sprite sp;
+  
+  if (pos->y < 0 || pos->x < 0
+      || pos->y > curlvl->attr.siz.h || pos->x > curlvl->attr.siz.w)
+    return 1;
+
+  sp = char2sprite[(unsigned char)curlvl->lay[pos->y][pos->x]];
+  return obj_is_obstacle[sp];
+}
+
+void
+lvl_objects_update (void)
+{
+  bricks_update ();
+  bricks_draw ();
+  money_draw ();  
+  foes_update_pos ();
+}
+
+unsigned
+lvl_got_hole_below (const struct coord *pos)
+{
+  struct coord below;
+
+  coord_below (pos, &below);
+  if (!bricks_broken_at (&below))
+    return 0;
+  else
+    {
+      if (foes_at_pos (&below) || hero_at_pos (&below))
+        return 0;
+      else
+        return 1;
+    }
+}
+
+static unsigned
+got_way (const struct coord *orig,
+          enum move wanted_dir, enum move prefered_move)
+{
+  struct coord pos;
+
+  coord_copy (orig, &pos);
+  while (!lvl_obstacle_at (&pos))
+    {
+      struct coord wanted_pos;
+
+      coord_set_yx (&wanted_pos,
+                    pos.y + (wanted_dir == MOV_UP ? -1 : 1), pos.x);
+      if (valid_decor_move (&pos, &wanted_pos, wanted_dir, SP_NONE))
+        return 1;
+      
+      pos.x += prefered_move == MOV_RIGHT ? 1 : -1;
+    }
+
+  return 0;
+}
+
+enum move
+lvl_shortest_way (const struct coord *orig,
+                  enum move wanted_dir, enum move prefered_move)
+{
+  struct coord dest;
+  
+  if (lvl_valid_move (orig, wanted_dir, &dest, SP_NONE))
+    return wanted_dir;
+  else
+    {
+      if (got_way (orig, wanted_dir, prefered_move))
+        return prefered_move;
+      else
+        return coord_opposite_dir (prefered_move);
+    }
+}
+
+int
+lvl_random_xpos (void)
+{
+  return rand () % curlvl->attr.siz.w;
+}
diff --git a/mem.c b/mem.c
new file mode 100644
index 0000000..1d4c471
--- /dev/null
+++ b/mem.c
@@ -0,0 +1,96 @@
+/*  $Id: mem.c,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "oldrunner.h"
+
+void *
+xmalloc (size_t size)
+{
+  void *p;
+  
+  EXIT_IF (size == 0, "xmalloc: zero size");
+  p = malloc (size);
+  EXIT_IF (p == 0, "xmalloc: out of memory");
+
+  return p;
+}
+
+void *
+xcalloc (size_t nmemb, size_t size)
+{
+  void *p;
+
+  EXIT_IF (nmemb == 0 || size == 0, "xcalloc: zero size");
+  EXIT_IF (SIZE_MAX / nmemb < size, "xcalloc: overflow");
+  p = calloc (nmemb, size);
+  EXIT_IF (p == 0, "xcalloc: out of memory");
+
+  return p;
+}
+
+void *
+xrealloc (void *ptr, size_t nmemb, size_t size)
+{
+  void *new_ptr;
+  size_t new_size;
+
+  new_size = nmemb * size;
+  EXIT_IF (new_size == 0, "xrealloc: zero size");
+  EXIT_IF (SIZE_MAX / nmemb < size, "xrealloc: overflow");
+  new_ptr = realloc (ptr, new_size);
+  EXIT_IF (new_ptr == 0, "xrealloc: out of memory");
+
+  return new_ptr;
+}
+
+char *
+xstrdup (const char *str)
+{
+  size_t len;
+  char *cp;
+
+  len = strlen (str) + 1;
+  cp = xmalloc (len);
+
+  return strncpy (cp, str, len);
+}
+
+void
+xfree (void *p)
+{
+  EXIT_IF (p == 0, "xfree: null pointer");
+  free (p);
+}
diff --git a/money.c b/money.c
new file mode 100644
index 0000000..91688cd
--- /dev/null
+++ b/money.c
@@ -0,0 +1,100 @@
+/*  $Id: money.c,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "oldrunner.h"
+
+struct money {
+  struct coord        pos;
+  SLIST_ENTRY(money)  moneyp;
+};
+
+SLIST_HEAD(, money) money_list;
+
+void
+money_init (void)
+{
+  SLIST_INIT (&money_list);
+}
+
+void
+money_free (void)
+{
+  while (!SLIST_EMPTY (&money_list))
+    {
+      struct money *m;
+      
+      m = SLIST_FIRST (&money_list);
+      SLIST_REMOVE_HEAD (&money_list, moneyp);
+      xfree (m);
+    }
+}
+
+void
+money_add (const struct coord *pos)
+{
+  struct money *m;
+
+  m = xmalloc (sizeof *m);
+  coord_set_yx (&m->pos, pos->y, pos->x);
+  SLIST_INSERT_HEAD (&money_list, m, moneyp);
+}
+
+void
+money_draw (void)
+{
+  struct money  *m;
+  
+  SLIST_FOREACH (m, &money_list, moneyp)
+    gfx_show_sprite (SP_MONEY, &m->pos);
+}
+
+void
+money_check_at (const struct coord *hero_pos)
+{
+  struct money *m;
+  
+  SLIST_FOREACH (m, &money_list, moneyp)
+    {
+      if (coord_equal (&m->pos, hero_pos))
+        {
+          SLIST_REMOVE (&money_list, m, money, moneyp);
+          game_score_inc ();
+          return;
+        }
+    }
+}
+
+unsigned
+money_all_collected (void)
+{
+  return SLIST_EMPTY (&money_list);
+}
diff --git a/oldrunner.6 b/oldrunner.6
new file mode 100755
index 0000000..fb91ef0
--- /dev/null
+++ b/oldrunner.6
@@ -0,0 +1,102 @@
+.\" 	$Id: oldrunner.6,v 1.2 2012/01/06 10:13:55 culot Exp $
+.\"
+.\" Copyright (c) 2010, 2012 Frederic Culot <frederic@culot.org>
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\"
+.\"      - Redistributions of source code must retain the above
+.\"        copyright notice, this list of conditions and the
+.\"        following disclaimer.
+.\"
+.\"      - Redistributions in binary form must reproduce the above
+.\"        copyright notice, this list of conditions and the
+.\"        following disclaimer in the documentation and/or other
+.\"        materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+.\" "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+.\" A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+.\" OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+.\" LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+.\" OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.fam C
+.TH OLDRUNNER 6 "January 31, 2012" "OLDRUNNER(6)" "Oldrunner Manual"
+.SH NAME
+Oldrunner \- Broderbund's Loderunner remake
+.SH SYNOPSIS
+.B "oldrunner "
+[\fB-v\fP] [\fB-l\fP<\fInum\fP>]
+.SH DESCRIPTION
+Oldrunner is a remake of Broderbund's Loderunner which contains the
+150 original game levels. In order to win a level, the player '\fB@\fP'
+must collect all gold bags '\fB$\fP' without being touched by ennemies
+(same sprite '\fB@\fP' as player but in reverse video). Once all gold
+is collected an escape ladder usually appears and the player must
+travel to the top of the screen to reach the next level. The player can
+dig holes into floors to temporarily trap ennemies and may then safely
+walk atop them. Over time, floors dug into will regenerate, filling in
+these holes. A trapped ennemy who cannot escape a hole before it fills
+is consumed, immediately respawning in a random location at the top of
+the level.
+.SH OPTIONS
+The following options are supported:
+.TP
+\fB-l\fP <num>
+Start the game at level number \fInum\fP.
+.TP
+\fB-v\fP
+Display oldrunner version and exit.
+.SH CONFIGURATION
+The game can be configured by modifying the variables found in
+the cfg.h header file and recompiling. The default keys are the
+following (\fB^X\fP means \fBcontrol\fP and \fBX\fP keys pressed
+simultaneously):
+.TP
+\fBh\fP
+move left
+.TP
+\fBl\fP
+move right
+.TP
+\fBk\fP
+move up
+.TP
+\fBj\fP
+move down
+.TP
+\fBs\fP
+dig on the left
+.TP
+\fBd\fP
+dig on the right
+.TP
+\fB^g\fP
+commit suicide
+.TP
+\fB^n\fP
+go to next level
+.TP
+\fB^p\fP
+go back to previous level
+.TP
+\fB^d\fP
+quit the game
+.SH SEE ALSO
+ncurses(3)
+.br
+oldrunner web page: http://culot.org/public/Code/oldrunner.html
+.SH AUTHOR
+\fBFrederic Culot\fP <frederic@culot.org>.
+.SH COPYRIGHT
+Copyright (c) 2010, 2012 by Frederic Culot. 
+.br
+This software is released under the BSD License.
diff --git a/oldrunner.c b/oldrunner.c
new file mode 100644
index 0000000..135cce0
--- /dev/null
+++ b/oldrunner.c
@@ -0,0 +1,86 @@
+/*  $Id: oldrunner.c,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <limits.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "oldrunner.h"
+
+/*
+ * Oldrunner is a remake of the Loadrunner game from Broderbund, and one of the
+ * first computer games my father offered me. I wrote this in memory of him.
+ *
+ *      Jean-Francois Culot
+ *    1952-Sep-30 - 2009-Oct-20
+ */
+int
+main (int argc, char **argv)
+{
+  const char *errstr;
+  int ch, startlvl;
+
+  startlvl = 0;
+  while ((ch = getopt (argc, argv, "l:v")) != -1)
+    {
+      switch (ch)
+        {
+        case 'l':
+          startlvl = (int)strtonum (optarg, 0, INT_MAX, &errstr) - 1;
+          if (errstr)
+            {
+              fprintf (stderr, "Bad level number: %s\n", errstr);
+              return 1;
+            }
+          break;
+        case 'v':
+          fputs ("oldrunner-" VERSION "\n", stdout);
+          return 0;
+        default:
+          goto err;
+        }
+    }
+  argc -= optind;
+  argv += optind;
+  if (argc >= 1)
+    {
+    err:
+      fputs ("usage: oldrunner [-v] [-l<num>]\n", stderr);
+      return 0;
+    }
+
+  game_init (startlvl);
+  usr_input ();
+  game_end ();
+  
+  return 0;
+}
diff --git a/oldrunner.h b/oldrunner.h
new file mode 100644
index 0000000..5e32306
--- /dev/null
+++ b/oldrunner.h
@@ -0,0 +1,282 @@
+/*  $Id: oldrunner.h,v 1.2 2012/01/06 10:11:30 culot Exp $  */
+
+/*
+ * Copyright (c) 2010, 2012 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef OLDRUNNER_H
+#define OLDRUNNER_H
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "config.h"
+#include "compat.h"
+#include "cfg.h"
+
+/* Option to set auto-center mode on/off */
+#define AUTO_CENTER_MODE  0
+
+/* Game level screen properties. */
+#define LEVEL_DEFAULT_WIDTH     26
+#define LEVEL_DEFAULT_HEIGHT    16
+#define LEVEL_MAX_WIDTH         128
+#define LEVEL_MAX_HEIGHT        128
+#define VIEWPORT_WIDTH          80
+#define VIEWPORT_HEIGHT         24
+
+/* Possible characters states. */
+#define   STATE_ALIVE     0x01
+#define   STATE_FALLING   0x02
+#define   STATE_DIGGING   0x04
+#define   STATE_TRAPPED   0x08
+
+/* Game sprites. */
+enum sprite {
+  /* Sprites used to draw a level. */
+  SP_NONE,
+  SP_BRICK,
+  SP_BRICK_SCRACK,
+  SP_BRICK_LCRACK,
+  SP_BRICK_BROKEN,
+  SP_CIMENT,
+  SP_FAKE_BRICK,
+  SP_LADDER,
+  SP_ROPE,
+  SP_ESCAPE_LADDER,
+  
+  /* Sprites used for objects. */
+  SP_MONEY,
+  
+  /* Sprites used to draw characters. */
+  SP_HERO,
+  SP_FOE,
+  SP_INVALID,
+  SPRITES
+};
+
+enum move {
+  MOV_UP,
+  MOV_DOWN,
+  MOV_LEFT,
+  MOV_RIGHT,
+  MOV_FALL,
+  MOV_NONE,
+  MOVES
+};
+
+struct size {
+  unsigned  h; /* height */  
+  unsigned  w; /* width */
+};
+
+struct coord {
+  int  y;  /* Position on the vertical axis. */
+  int  x;  /* Position on the horizontal axis. */
+};
+
+struct timer {
+  double  time;    /* time in usec. */
+  double  elapsed;
+};
+
+/* Structure defining all possible user inputs. */
+struct usr_input {
+  int key;
+};
+
+struct game_info {
+#define  NO_CHANGE     0x0  
+#define  LEVEL_CHANGE  0x1
+#define  SCORE_CHANGE  0x2
+#define  LIVES_CHANGE  0x4  
+  int       state;
+  
+  unsigned  level;  
+  unsigned  score;
+  unsigned  lives;
+};
+
+#define STRINGIFY(x)  #x
+#define TOSTRING(x)   STRINGIFY(x)
+#define __FILE_POS__   __FILE__ ":" TOSTRING(__LINE__)
+
+#define ERROR_MSG(...) do {                                             \
+  char msg[BUFSIZ];                                                     \
+  int len;                                                              \
+                                                                        \
+  len = snprintf (msg, BUFSIZ, "%s: %d: ", __FILE__, __LINE__);         \
+  (void)snprintf (msg + len, BUFSIZ - len, __VA_ARGS__);                \
+  (void)fprintf (stderr, "%s\n", msg);                                  \
+} while (0)
+
+#define EXIT(...) do {                                                  \
+          ERROR_MSG(__VA_ARGS__);                                       \
+          exit (1);                                                     \
+} while (0)
+
+#define EXIT_IF(cond, ...) do {                                         \
+  if ((cond))                                                           \
+    EXIT(__VA_ARGS__);                                                  \
+} while (0)
+
+/* bricks.c */
+#define   BRICK_COMEBACK_TIME  (OLDRUNNER_TIMEOUT * 80)
+void      bricks_init (void);
+void      bricks_free (void);
+void      bricks_break (const struct coord *);
+void      bricks_draw (void);
+void      bricks_update (void);
+unsigned  bricks_broken_at (const struct coord *);
+
+/* coord.c */
+void       coord_copy (const struct coord *, struct coord *);
+void       coord_below (const struct coord *, struct coord *);
+void       coord_above (const struct coord *, struct coord *);
+enum move  coord_opposite_dir (enum move);
+void       coord_compute (const struct coord *, enum move, struct coord *);
+void       coord_set_yx (struct coord *, int, int);
+unsigned   coord_equal (const struct coord *, const struct coord *);
+void       coord_diff (const struct coord *, const struct coord *,
+                       struct coord *);
+
+/* foes.c */
+void      foes_init (void);
+void      foes_free (void);
+void      foes_add (const struct coord *);
+void      foes_draw (void);
+unsigned  foes_at_pos (const struct coord *);
+void      foes_update_pos (void);
+unsigned  foes_wallup_at (const struct coord *);
+
+/* game.c */
+void      game_won (void);
+void      game_init (int);
+void      game_end (void);
+void      game_update (void);
+unsigned  game_load (const char *);
+void      game_score_inc (void);
+int       game_level_num (void);
+void      game_level_inc (void);
+void      game_level_dec (void);
+void      game_lives_inc (void);
+void      game_lives_dec (void);
+
+/* gfx.c */
+void  gfx_init (void);
+void  gfx_end (void);
+void  gfx_alert (void);
+void  gfx_center_at (struct coord *);
+void  gfx_update (void);
+void  gfx_get_input (struct usr_input *);
+void  gfx_show_sprite (enum sprite, const struct coord *);
+void  gfx_move_sprite (enum sprite, const struct coord *, const struct coord *);
+void  gfx_update_info (const struct game_info *);
+void  gfx_popup (const char *, const char *);
+void  gfx_game_over (void);
+void  gfx_game_won (void);
+
+/* hero.c */
+void      hero_init (void);
+void      hero_draw (void);
+void      hero_set_pos (const struct coord *);
+void      hero_set_initpos (const struct coord *);
+void      hero_get_pos (struct coord *);
+void      hero_get_initpos (struct coord *);
+unsigned  hero_at_pos (const struct coord *);
+void      hero_move (enum move);
+void      hero_dig (enum move);
+void      hero_dig_done (void);
+void      hero_trapped (void);
+void      hero_die (void);
+unsigned  hero_wallup_at (const struct coord *);
+
+/* io.c */
+FILE  *io_fopen (const char *);
+void   io_fclose (FILE *);
+char  *io_getln (FILE *);
+
+/* lvl.c */
+void         lvl_started (void);
+enum sprite  lvl_decor_at_pos (const struct coord *);
+void         lvl_init (void);
+unsigned     lvl_load (int);
+unsigned     lvl_load_next (void);
+unsigned     lvl_load_prev (void);
+void         lvl_won (void);
+void         lvl_lost (void);
+void         lvl_draw_escape_ladder (void);
+unsigned     lvl_set_name (const char *);
+unsigned     lvl_set_author (const char *);
+unsigned     lvl_set_size (char *);
+unsigned     lvl_set_row (int, int, const char *);
+unsigned     lvl_width (void);
+unsigned     lvl_height (void);
+unsigned     lvl_add_new (void);
+unsigned     lvl_valid_move (const struct coord *, enum move, struct coord *,
+                             enum sprite);
+unsigned     lvl_valid_dig (const struct coord *);
+unsigned     lvl_nothing_below (const struct coord *);
+unsigned     lvl_obstacle_at (const struct coord *);
+void         lvl_objects_update (void);
+unsigned     lvl_got_hole_below (const struct coord *);
+enum move    lvl_shortest_way (const struct coord *, enum move, enum move);
+int          lvl_random_xpos (void);
+enum move    lvl_random_hdir (void);
+
+/* mem.c */
+void  *xmalloc (size_t);
+void  *xcalloc (size_t, size_t);
+void  *xrealloc (void *, size_t, size_t);
+char  *xstrdup (const char *);
+void   xfree (void *);
+
+/* money.c */
+void      money_init (void);
+void      money_free (void);
+void      money_add (const struct coord *);
+void      money_draw (void);
+void      money_check_at (const struct coord *);
+unsigned  money_all_collected (void);
+
+/* timer.c */
+void      timer_get_time (struct timer *);
+void      timer_start (struct timer *);
+void      timer_stop (struct timer *);
+double    timer_diff (const struct timer *, const struct timer *);
+double    timer_elapsed (const struct timer *);
+void      timer_set (const struct timer *, struct timer *);
+void      timer_add (struct timer *, double);
+unsigned  timer_delay_elapsed (struct timer *, double);
+
+/* usr.c */
+void  usr_input (void);
+void  usr_reset_input (void);
+
+#endif /* OLDRUNNER_H */
diff --git a/timer.c b/timer.c
new file mode 100644
index 0000000..b78c560
--- /dev/null
+++ b/timer.c
@@ -0,0 +1,95 @@
+/*  $Id: timer.c,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/time.h>
+
+#include "oldrunner.h"
+
+#define  SEC2USEC  1000000
+
+void
+timer_get_time (struct timer *now)
+{
+  struct timeval t;
+
+  (void)gettimeofday (&t, 0);
+  now->time = (double)t.tv_sec * SEC2USEC + t.tv_usec;
+}
+
+void
+timer_start (struct timer *t)
+{
+  timer_get_time (t);
+}
+
+void
+timer_stop (struct timer *t)
+{
+  struct timer now;
+
+  timer_get_time (&now);
+  t->elapsed = timer_diff (t, &now);
+  t->time = now.time;
+}
+
+double
+timer_diff (const struct timer *t1, const struct timer *t2)
+{
+  return t1->time - t2->time;
+}
+
+double
+timer_elapsed (const struct timer *t)
+{
+  return t->elapsed;
+}
+
+void
+timer_set (const struct timer *orig, struct timer *dest)
+{
+  dest->time = orig->time;
+}
+
+void
+timer_add (struct timer *t, double val)
+{
+  t->time += val;
+}
+
+unsigned
+timer_delay_elapsed (struct timer *t, double delay)
+{
+  struct timer now;
+
+  timer_get_time (&now);
+  return timer_diff (&now, t) > delay ? 1 : 0;
+}
diff --git a/usr.c b/usr.c
new file mode 100644
index 0000000..af359ac
--- /dev/null
+++ b/usr.c
@@ -0,0 +1,113 @@
+/*  $Id: usr.c,v 1.1.1.1 2010/07/17 17:30:32 culot Exp $  */
+
+/*
+ * Copyright (c) 2010 Frederic Culot <frederic@culot.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the
+ *        following disclaimer in the documentation and/or other
+ *        materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "oldrunner.h"
+
+#define ORKEY_NONE  -1
+#define USER_DELAY  OLDRUNNER_TIMEOUT
+
+static struct usr_input  rec_input;
+
+void
+usr_reset_input (void)
+{
+  rec_input.key = ORKEY_NONE;
+}
+
+void
+usr_input (void)
+{
+  struct timer user_timer;
+
+  timer_get_time (&user_timer);
+  usr_reset_input ();
+  for (;;)
+    {
+      struct usr_input input;
+
+      game_update ();
+      gfx_get_input (&input);
+      if (!timer_delay_elapsed (&user_timer, USER_DELAY))
+        {
+          if (input.key != ORKEY_NONE)
+            rec_input.key = input.key;
+          continue;
+        }
+
+      switch (rec_input.key)
+        {
+        case ORKEY_EXIT:
+          return;
+
+        case ORKEY_MOVE_RIGHT:
+          hero_move (MOV_RIGHT);
+          break;
+        case ORKEY_MOVE_LEFT:
+          hero_move (MOV_LEFT);
+          break;
+        case ORKEY_MOVE_UP:
+          hero_move (MOV_UP);
+          break;
+        case ORKEY_MOVE_DOWN:
+          hero_move (MOV_DOWN);
+          break;
+
+        case ORKEY_DIG_LEFT:
+          hero_dig (MOV_LEFT);
+          break;
+        case ORKEY_DIG_RIGHT:
+          hero_dig (MOV_RIGHT);
+          break;
+          
+        case ORKEY_LEVEL_NEXT:
+          lvl_load_next ();
+          break;
+        case ORKEY_LEVEL_PREV:
+          lvl_load_prev ();
+          break;
+
+        case ORKEY_SUICIDE:
+          hero_die ();
+          break;
+          
+        default:
+          /*
+           * No action were performed by the user in the time interval.
+           * Simulate gravity by requiring a fall by default.
+           */
+          hero_move (MOV_FALL);
+          break;
+        }
+
+      timer_get_time (&user_timer);
+    }
+}