From 833b3d56704730776e528b89013e9419fd128eba Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Sun, 17 Feb 2013 01:56:08 -0500
Subject: Allocate maps & tilesets before their start elems.

---
diff --git a/src/main.c b/src/main.c
index c867f65..0727d5b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -9,12 +9,16 @@ main(void)
 {
 	struct map *map;
 	struct image *img;
+	struct tileset *ts;
 	SDL_Rect imgrect, surfacerect;
 
 	init();
 
 	map = map_get("data/forest1.simple.tmx");
-	printf("Map dimensions: %dx%d\n", map->width, map->height);
+	debug("Map dimensions: %dx%d", map->width, map->height);
+	for (ts = map->tilesets_head; ts != NULL; ts = ts->next) {
+		debug("Tilesheet name: %s", ts->name);
+	}
 
 	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 6e5606b..e0c48c0 100644
--- a/src/resources/map.c
+++ b/src/resources/map.c
@@ -16,7 +16,7 @@ static void XMLCALL tmx_map_end(void *, const char *);
 static void XMLCALL tmx_map_el_start(void *, const char *, const char **);
 static void XMLCALL tmx_tileset_start(void *, const char *, const char **);
 static void XMLCALL tmx_tileset_end(void *, const char *);
-static void XMLCALL tmx_ext_ts_end(void *, const char *);
+static void XMLCALL tmx_tilesheetemb_end(void *, const char *);
 static void XMLCALL tmx_tileset_el_start(void *, const char *, const char **);
 static void XMLCALL tmx_image_end(void *, const char *);
 static void XMLCALL tmx_unused_start(void *, const char *, const char **);
@@ -40,6 +40,11 @@ map_get(const char *path)
 		return map;
 	}
 
+	map = resource_alloc(path, sizeof(*map));
+	if (map == NULL) {
+		return NULL;
+	}
+
 	p = XML_ParserCreate(NULL);
 	if (p == NULL) {
 		warn("Failed to create TMX parser");
@@ -80,7 +85,6 @@ map_get(const char *path)
 		return NULL;
 	}
 
-	map = (struct map *) xml_node_pop(p);
 	XML_ParserFree(p);
 	fclose(tmx_fp);
 
@@ -128,6 +132,11 @@ tileset_get(const char *path)
 		return ts;
 	}
 
+	ts = resource_alloc(path, sizeof(*ts));
+	if (ts == NULL) {
+		return NULL;
+	}
+
 	p = XML_ParserCreate(NULL);
 	if (p == NULL) {
 		warn("Failed to create TSX parser");
@@ -168,7 +177,6 @@ tileset_get(const char *path)
 		return NULL;
 	}
 
-	ts = (struct tileset *) xml_node_pop(p);
 	XML_ParserFree(p);
 	fclose(tmx_fp);
 
@@ -187,11 +195,7 @@ tmx_map_start(void *pv, const char *name, const char **attr)
 	debug("<%s> (map)", name);
 
 	if (xml_check_tag(name, "map")) {
-		m = resource_alloc("", sizeof(*m));
-		if (m == NULL) {
-			XML_StopParser(p, XML_FALSE);
-			return;
-		}
+		m = xml_node_peek(p);
 		xml_get_int_attr(p, attr, "width", &m->width, 1);
 		xml_get_int_attr(p, attr, "height", &m->height, 1);
 		xml_get_int_attr(p, attr, "tilewidth", &m->tilewidth, 1);
@@ -207,14 +211,11 @@ static void XMLCALL
 tmx_map_end(void *pv, const char *name)
 {
 	XML_Parser p = (XML_Parser) pv;
-	struct map *m;
 
 	debug("</%s> (map)", name);
 
 	if (xml_check_tag(name, "map")) {
-		/* A hack to expose the map back to map_get(). */
-		m = xml_node_pop(p);
-		xml_node_push(p, m, tmx_invalid_start, tmx_invalid_end, NULL);
+		xml_node_pop(p);
 	} else {
 		xml_unexpected_end_tag(p, name, "map");
 	}
@@ -239,15 +240,23 @@ tmx_map_el_start(void *pv, const char *name, const char **attr)
 			/* External tilesheet. */
 			ts = tileset_get(source);
 			free(source);
-			xml_node_push(p, ts, tmx_invalid_start, tmx_ext_ts_end,
-					NULL);
+			xml_node_push(p, ts, tmx_invalid_start,
+					tmx_tilesheetemb_end, NULL);
 		} else {
-			/* Pass through. */
-			tmx_tileset_start(pv, name, attr);
-			ts = (struct tileset *) xml_node_peek(p);
+			/* Embedded tilesheet. */
+			ts = resource_alloc("internal", sizeof(*ts));
+			if (ts == NULL) {
+				return;
+			}
+			xml_get_string_attr(p, attr, "name", &ts->name, 1);
+			xml_get_int_attr(p, attr, "tilewidth", &ts->tilewidth,
+					1);
+			xml_get_int_attr(p, attr, "tileheight", &ts->tileheight,
+					1);
+			xml_node_push(p, ts, tmx_tileset_el_start,
+					tmx_tilesheetemb_end, NULL);
 		}
 		xml_get_int_attr(p, attr, "firstgid", &ts->firstgid, 1);
-		xml_get_string_attr(p, attr, "name", &ts->name, 1);
 	} else {
 		xml_unexpected_start_tag(p, name,
 				"properties, tileset, layer, or objectgroup");
@@ -263,7 +272,7 @@ tmx_tileset_start(void *pv, const char *name, const char **attr)
 	debug("<%s> (tileset)", name);
 
 	if (xml_check_tag(name, "tileset")) {
-		ts = resource_alloc("", sizeof(*ts));
+		ts = xml_node_peek(p);
 		xml_get_string_attr(p, attr, "name", &ts->name, 1);
 		xml_get_int_attr(p, attr, "tilewidth", &ts->tilewidth, 1);
 		xml_get_int_attr(p, attr, "tileheight", &ts->tileheight, 1);
@@ -278,27 +287,23 @@ static void XMLCALL
 tmx_tileset_end(void *pv, const char *name)
 {
 	XML_Parser p = (XML_Parser) pv;
-	struct tileset *ts;
 
-	debug("</%s> (tileset)", name);
+	debug("</%s> (external tileset)", name);
 
 	if (xml_check_tag(name, "tileset")) {
-		ts = (struct tileset *) xml_node_pop(p);
-		/* XXX?? */
-		resource_use((struct resource *) ts);
-		resource_add(&ts_res, "", (struct resource *) ts);
+		xml_node_pop(p);
 	} else {
 		xml_unexpected_end_tag(p, name, "tileset");
 	}
 }
 
 static void XMLCALL
-tmx_ext_ts_end(void *pv, const char *name)
+tmx_tilesheetemb_end(void *pv, const char *name)
 {
 	XML_Parser p = (XML_Parser) pv;
 	struct tileset *ts;
 
-	debug("</%s> (tileset link)", name);
+	debug("</%s> (tileset)", name);
 
 	if (xml_check_tag(name, "tileset")) {
 		ts = (struct tileset *) xml_node_pop(p);
@@ -319,7 +324,7 @@ tmx_tileset_el_start(void *pv, const char *name, const char **attr)
 
 	if (xml_check_tag(name, "image")) {
 		xml_get_string_attr(p, attr, "source", &source, 0);
-		img = NULL; /*img_png_get(source);*/
+		img = img_png_get(source);
 		free(source);
 		xml_node_push(p, img, tmx_invalid_start, tmx_image_end, NULL);
 	} else {
--
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