Support multiple map layers, fix transparent tiles

1 files changed, 30 insertions, 25 deletions

diff --git a/src/view/MapView.cpp b/src/view/MapView.cpp
index 4938c5d..d511c31 100644
--- a/src/view/MapView.cpp
+++ b/src/view/MapView.cpp
@@ -48,12 +48,11 @@ MapView::MapView(const std::shared_ptr<Window> &window0,
 	amask = 0xff000000;
 #endif
 
+	SpriteCache *spriteCache = window->getSpriteCache();
+
 	const std::vector<std::string> &tileset = map->getTileset();
 
 	SDL_Surface *surface = SDL_CreateRGBSurface(0, getTileSize()*tileset.size(), getTileSize(), 32, rmask, gmask, bmask, amask);
-	SDL_SetSurfaceBlendMode(surface, SDL_BLENDMODE_NONE);
-
-	SpriteCache *spriteCache = window->getSpriteCache();
 
 	for (size_t i = 0; i < tileset.size(); i++) {
 		SDL_Rect rect = {
@@ -63,7 +62,11 @@ MapView::MapView(const std::shared_ptr<Window> &window0,
 			.h = 0,
 		};
 
-		SDL_BlitSurface(spriteCache->get("tile", tileset[i]), nullptr, surface, &rect);
+		SDL_Surface *sprite = spriteCache->get("tile", tileset[i]);
+
+		SDL_SetSurfaceBlendMode(sprite, SDL_BLENDMODE_NONE);
+		SDL_BlitSurface(sprite, nullptr, surface, &rect);
+		SDL_SetSurfaceBlendMode(sprite, SDL_BLENDMODE_BLEND);
 	}
 
 	tiles = SDL_CreateTextureFromSurface(window->getRenderer(), surface);
@@ -98,27 +101,29 @@ void MapView::render(float centerX, float centerY, uint64_t time) {
 
 	int baseX = viewport.first/2 - int(centerX * tilePixels) - tilePixels/2, baseY = viewport.second/2 - int(centerY * tilePixels) - tilePixels/2;
 
-	for (int x = minX; x <= maxX; x++) {
-		for (int y = minY; y <= maxY; y++) {
-			uint32_t tile = map->getTileAt(x, y);
-			if (!tile)
-				continue;
-
-			SDL_Rect src = {
-				.x = int(getTileSize()*(tile-1)),
-				.y = 0,
-				.w = getTileSize(),
-				.h = getTileSize(),
-			};
-
-			SDL_Rect dst = {
-				.x = baseX + x*tilePixels,
-				.y = baseY + y*tilePixels,
-				.w = tilePixels,
-				.h = tilePixels,
-			};
-
-			SDL_RenderCopy(window->getRenderer(), tiles, &src, &dst);
+	for (size_t layer = 0; layer < map->getLayerCount(); layer++) {
+		for (int x = minX; x <= maxX; x++) {
+			for (int y = minY; y <= maxY; y++) {
+				uint32_t tile = map->getTileAt(layer, x, y);
+				if (!tile)
+					continue;
+
+				SDL_Rect src = {
+					.x = int(getTileSize()*(tile-1)),
+					.y = 0,
+					.w = getTileSize(),
+					.h = getTileSize(),
+				};
+
+				SDL_Rect dst = {
+					.x = baseX + x*tilePixels,
+					.y = baseY + y*tilePixels,
+					.w = tilePixels,
+					.h = tilePixels,
+				};
+
+				SDL_RenderCopy(window->getRenderer(), tiles, &src, &dst);
+			}
 		}
 	}