From 12b4f785f2bfccce59eb80378a76bf36bef6ff55 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Sun, 17 Feb 2013 16:39:25 -0500
Subject: Add map exits to a collisions array.

---
diff --git a/src/resources/map.c b/src/resources/map.c
index c1a33bf..4b2b9ac 100644
--- a/src/resources/map.c
+++ b/src/resources/map.c
@@ -160,6 +160,8 @@ map_get_layer(struct map *m, const char *name)
 void
 map_add_exit(struct map *m, struct map_exit *e)
 {
+	int i, j;
+
 	e->next = NULL;
 	if (m->map_exits_head == NULL) {
 		m->map_exits_head = e;
@@ -167,6 +169,13 @@ map_add_exit(struct map *m, struct map_exit *e)
 		m->map_exits_tail->next = e;
 	}
 	m->map_exits_tail = e;
+
+	for (i = 0; i < e->width; ++i) {
+		for (j = 0; j < e->height; ++j) {
+			m->collisions[j * m->width + i].type = COLLISION_EXIT;
+			m->collisions[j * m->width + i].data.e = e;
+		}
+	}
 }
 
 static struct tileset *
@@ -254,6 +263,13 @@ tmx_map_start(void *pv, const char *name, const char **attr)
 		xml_get_int_attr(p, attr, "height", &m->height, 1);
 		xml_get_int_attr(p, attr, "tilewidth", &m->tilewidth, 1);
 		xml_get_int_attr(p, attr, "tileheight", &m->tileheight, 1);
+		m->collisions = malloc(m->width * m->height *
+				sizeof(*m->collisions));
+		if (m->collisions == NULL) {
+			return;
+		}
+		memset(m->collisions, 0, m->width * m->height *
+				sizeof(*m->collisions));
 		xml_node_push(p, m, tmx_map_el_start, tmx_map_end, NULL);
 	} else {
 		xml_unexpected_start_tag(p, name, "map");
diff --git a/src/resources/map.h b/src/resources/map.h
index bf225de..e088161 100644
--- a/src/resources/map.h
+++ b/src/resources/map.h
@@ -35,6 +35,19 @@ struct layer {
 	char *compression;
 	char *raw_data;
 };
+struct map_collision {
+	enum {
+		COLLISION_NONE = 0,
+		COLLISION_CHAR,
+		COLLISION_OBJ,
+		COLLISION_EXIT
+	} type;
+	union {
+/*		struct character *c;*/
+		Uint8 o;
+		struct map_exit *e;
+	} data;
+};
 struct map_exit {
 	struct map *map;
 	int x;
@@ -69,7 +82,7 @@ struct map {
 	struct map_tileset *tilesets_head;
 	struct map_tileset *tilesets_tail;
 	struct layer layers[LAYERS_MAX];
-	Uint8 *collision;
+	struct map_collision *collisions;
 	struct map_exit *map_exits_head;
 	struct map_exit *map_exits_tail;
 	int cur_ts_firstgid;
--
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