Fix unsafe (char *)->(int *). Ensure byte order.

2 files changed, 15 insertions, 1 deletions

diff --git a/src/main.c b/src/main.c
index fa7c7f6..dc85590 100644
--- a/src/main.c
+++ b/src/main.c
@@ -11,6 +11,7 @@ main(void)
 	struct image *img;
 	struct map_tileset *ts;
 	struct map_exit *e;
+	int i;
 	SDL_Rect imgrect, surfacerect;
 
 	init();
@@ -30,6 +31,9 @@ main(void)
 				e->target_map->width, e->target_map->height,
 				e->target_x_coord, e->target_y_coord);
 	}
+	for (i = 0; i < map->width * map->height; ++i) {
+		debug("%x", map->layers[LAYER_CHAR_BOT].tiles[i]);
+	}
 
 	img = img_png_get("../forest-6-layer-test_ground.png");
 	img_png_free(img);
diff --git a/src/resources/map.c b/src/resources/map.c
index 2cc2f2a..514129d 100644
--- a/src/resources/map.c
+++ b/src/resources/map.c
@@ -623,6 +623,7 @@ tmx_data_end(void *pv, const char *name)
 	size_t decomp_len;
 	char *decoded_buf;
 	char *decomp_buf;
+	size_t i;
 
 	debug("</%s> (data)", name);
 
@@ -671,7 +672,16 @@ tmx_data_end(void *pv, const char *name)
 			return;
 		}
 		free(ly->raw_data);
-		ly->tiles = (Uint32 *) decomp_buf;
+		ly->tiles = malloc(decomp_len);
+		for (i = 0; i < decomp_len / 4; ++i) {
+			/* Convert each tile GID to the system's byte order. */
+			ly->tiles[i] =
+				(decomp_buf[i * 4 + 0] & 0xFF << 000) |
+				(decomp_buf[i * 4 + 1] & 0xFF << 010) |
+				(decomp_buf[i * 4 + 2] & 0xFF << 020) |
+				(decomp_buf[i * 4 + 3] & 0xFF << 030);
+		}
+		free(decomp_buf);
 		xml_node_pop(p);
 	} else {
 		xml_unexpected_end_tag(p, name, "data");