Animated tile support. WIP!

src/tmx.c

@@ -72,6 +72,35 @@ tmx_tile* tmx_get_tile(tmx_map *map, unsigned int gid) {
 	return NULL;
 }
 
+void tmx_update_animation(tmx_map *map, int delta_time_msec) {
+
+    tmx_tileset_list *ts_list = map->ts_head;
+
+    while (ts_list != NULL) {
+        tmx_tileset *ts = ts_list->tileset;
+
+        for(int i = 0; i < ts->tilecount; i++) {
+            tmx_tile *tile = &ts->tiles[i];
+
+            if(!tile->animation)
+                continue;
+
+            tmx_anim_frame *cur_frame = &tile->animation[tile->current_animation_frame];
+
+            tile->animation_timer += delta_time_msec;
+
+            if(tile->animation_timer <= cur_frame->duration)
+                continue;
+
+            tile->animation_timer -= cur_frame->duration;
+
+            tile->current_animation_frame = (tile->current_animation_frame + 1) % tile->animation_len;
+        }
+
+        ts_list = ts_list->next;
+    }
+}
+
 static tmx_layer* _tmx_find_layer_by_id(tmx_layer *ly_head, int id) {
 	tmx_layer *res;
 	do {

src/tmx.h

@@ -117,6 +117,8 @@ struct _tmx_tile { /* <tile> */
 	tmx_object *collision;
 
 	unsigned int animation_len;
+    unsigned int current_animation_frame;
+    int animation_timer;
 	tmx_anim_frame *animation;
 
 	char *type;
@@ -284,6 +286,8 @@ TMXEXPORT void tmx_map_free(tmx_map *map);
    Returns the tile associated with this gid, returns NULL if it fails */
 TMXEXPORT tmx_tile* tmx_get_tile(tmx_map *map, unsigned int gid);
 
+TMXEXPORT void tmx_update_animation(tmx_map *map, int delta_time_msec);
+
 /* Find functions, iterate on the datastructure, you should probably cache the result */
 /* Finds a layer by its id, returns NULL if not found or an error occurred */
 TMXEXPORT tmx_layer* tmx_find_layer_by_id(const tmx_map *map, int id);

src/tmx_xml.c

@@ -749,6 +749,9 @@ static int parse_tile(xmlTextReaderPtr reader, tmx_tileset *tileset, tmx_resourc
 						if (!strcmp(name, "frame")) {
 							res->animation = parse_animation(reader, 0, &(res->animation_len));
 							if (!(res->animation)) return 0;
+
+                            res->current_animation_frame = 0;
+                            res->animation_timer = 0;
 						}
 						/* else: ignore */
 					} while (xmlTextReaderNodeType(reader) != XML_READER_TYPE_END_ELEMENT ||