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-rw-r--r--src/map.c88
-rw-r--r--src/map.h3
2 files changed, 91 insertions, 0 deletions
diff --git a/src/map.c b/src/map.c
index 314ae92..41d6af8 100644
--- a/src/map.c
+++ b/src/map.c
@@ -17,6 +17,7 @@
* along with Dodge Balls. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <SDL.h>
#include <expat.h>
#include <stdio.h>
#include <stdlib.h>
@@ -504,6 +505,93 @@ _db_tmx_map_start(void *pv, const char *name, const char **attr)
}
}
+static void
+_db_map_render_layer(struct db_map *map, struct db_map_layer *layer,
+ SDL_Renderer *renderer, SDL_Texture *texture)
+{
+ int i;
+ int gid;
+ SDL_bool tile_found;
+ struct db_tileset *tileset;
+ int firstgid;
+ int lastgid;
+ int columns;
+ int tilewidth;
+ int tileheight;
+ SDL_Rect tile_rect;
+ SDL_Rect layer_rect;
+
+ for (i = 0; i < map->w * map->h; ++i) {
+ gid = layer->tiles[i];
+ if (gid == 0) {
+ continue;
+ }
+ tile_found = SDL_FALSE;
+ for (tileset = map->tileset_head; tileset != NULL;
+ tileset = db_tileset_next(tileset)) {
+ firstgid = db_tileset_firstgid(tileset);
+ lastgid = firstgid + db_tileset_tilecount(tileset);
+ if (gid >= firstgid && gid < lastgid) {
+ columns = db_tileset_columns (tileset);
+ tilewidth = db_tileset_tilewidth (tileset);
+ tileheight = db_tileset_tileheight(tileset);
+ gid -= firstgid;
+ tile_rect.x = gid % columns;
+ tile_rect.y = gid / columns;
+ tile_rect.w = tilewidth;
+ tile_rect.h = tileheight;
+ tile_rect.x *= tile_rect.w;
+ tile_rect.y *= tile_rect.h;
+ layer_rect.x = i % columns;
+ layer_rect.y = i / columns;
+ layer_rect.w = tilewidth;
+ layer_rect.h = tileheight;
+ layer_rect.x *= layer_rect.w;
+ layer_rect.y *= layer_rect.h;
+ db_dbg("Blitting %dx%d tile at (%d,%d) "
+ "onto layer at (%d,%d)...",
+ tile_rect.w, tile_rect.h,
+ tile_rect.x, tile_rect.y,
+ layer_rect.x, layer_rect.y);
+ SDL_RenderCopy(renderer, texture,
+ &tile_rect, &layer_rect);
+ tile_found = SDL_TRUE;
+ break;
+ }
+ }
+ if (!tile_found) {
+ db_warn("Tile with gid 0x%8.8x not found", gid);
+ }
+ }
+}
+
+SDL_Texture *
+db_map_render(struct db_map *map, SDL_Renderer *renderer)
+{
+ struct db_tileset *tileset;
+ SDL_Texture *texture;
+ SDL_Texture *old_target;
+ struct db_map_layer *layer;
+
+ for (tileset = map->tileset_head; tileset != NULL;
+ tileset = db_tileset_next(tileset)) {
+ db_tileset_create_texture(tileset, renderer);
+ }
+
+ texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888,
+ SDL_TEXTUREACCESS_TARGET, map->w, map->h);
+ old_target = SDL_GetRenderTarget(renderer);
+ SDL_SetRenderTarget(renderer, texture);
+
+ for (layer = map->layer_head; layer != NULL; layer = layer->next) {
+ _db_map_render_layer(map, layer, renderer, texture);
+ }
+
+ SDL_SetRenderTarget(renderer, old_target);
+
+ return texture;
+}
+
struct db_map *
db_map_new(const char *game_id, const char *level_id)
{
diff --git a/src/map.h b/src/map.h
index a8ef337..2e6bd94 100644
--- a/src/map.h
+++ b/src/map.h
@@ -20,8 +20,11 @@
#ifndef DB_MAP_H_
#define DB_MAP_H_
+#include <SDL.h>
+
struct db_map;
struct db_map *db_map_new(const char *game_id, const char *level_id);
+SDL_Texture *db_map_render(struct db_map *map, SDL_Renderer *renderer);
#endif /* DB_MAP_H_ */