WIP

engine/system/drawSprites.ts

@@ -0,0 +1,39 @@
+import type { Box } from "#/engine/Box.ts";
+import { sceneChangeSet, sceneComponentsMap } from "#/engine/Scene.ts";
+import { drawSprite, type Sprite, spriteSheetMap } from "#/engine/Sprite.ts";
+import type { Vector } from "#/engine/Vector.ts";
+
+const drawables: Array<{ position: Box<Vector>; sprite: Box<Sprite> }> = [];
+sceneChangeSet.add((sceneData) => {
+	drawables.length = 0;
+
+	const sprites = [
+		...sceneComponentsMap.get(sceneData.name)!.get("sprite")!.values(),
+	] as Array<Box<Sprite>>;
+
+	sceneComponentsMap
+		.get(sceneData.name)!
+		.get("position")!
+		.values()
+		.forEach((box, index) => {
+			drawables.push({
+				position: box as Box<Vector>,
+				sprite: sprites[index],
+			});
+		});
+});
+
+export function drawSprites(ctx: CanvasRenderingContext2D) {
+	for (const drawable of drawables.sort(
+		(a, b) => a.position.value.y - b.position.value.y,
+	)) {
+		drawSprite(
+			ctx,
+			spriteSheetMap.get(drawable.sprite.value.src)!,
+			drawable.sprite.value.xStart,
+			drawable.sprite.value.yStart,
+			drawable.position.value.x,
+			drawable.position.value.y,
+		);
+	}
+}