Prepare support for adding extra elements to map layers

1 files changed, 12 insertions, 9 deletions

diff --git a/src/view/map.ts b/src/view/map.ts
index 9bdbd30..f5d6eba 100644
--- a/src/view/map.ts
+++ b/src/view/map.ts
@@ -2,7 +2,7 @@ import { Renderer } from './renderer/renderer';
 import { SpriteCoords, SpriteView, SpriteViewBuilder } from './sprite';
 import { loadImage, mkTexture } from './util/image';
 
-import { MapData } from '../model/data/map';
+import { MapData, MapLayer } from '../model/data/map';
 
 import { nextPowerOf2 } from '../util';
 
@@ -58,16 +58,19 @@ function addSprite(builder: SpriteViewBuilder, tileset: Tileset, x: number, y: n
 	builder.addSprite([x, y, x + 1, y + 1], tilePos);
 }
 
-export async function loadMap(r: Renderer, map: MapData): Promise<SpriteView> {
-	const tiles = await loadTiles(map.tiles);
-	const tileset = mkTileset(r, tiles);
-
+function buildMapLayer(r: Renderer, tileset: Tileset, layer: number[][]): SpriteView {
 	const builder = new SpriteViewBuilder(r, tileset.texture);
 
-	for (const layer of map.layers)
-		for (let x = 0; x < map.width; x++)
-			for (let y = 0; y < map.height; y++)
-				addSprite(builder, tileset, x, y, layer[y][x]);
+	for (let x = 0; x < layer[0].length; x++)
+		for (let y = 0; y < layer.length; y++)
+			addSprite(builder, tileset, x, y, layer[y][x]);
 
 	return builder.build();
 }
+
+export async function loadMap(r: Renderer, map: MapData): Promise<SpriteView[]> {
+	const tiles = await loadTiles(map.tiles);
+	const tileset = mkTileset(r, tiles);
+
+	return map.layers.map((layer) => buildMapLayer(r, tileset, layer.tiles));
+}