view: make entity anchor point configurable, default to center

1 files changed, 8 insertions, 5 deletions

diff --git a/src/view/entity.ts b/src/view/entity.ts
index d95d924..57969a2 100644
--- a/src/view/entity.ts
+++ b/src/view/entity.ts
@@ -2,14 +2,17 @@ import Renderer from './renderer/Renderer';
 import { SpriteCoords, SpriteView, SpriteViewBuilder } from './sprite';
 import { loadImage, mkTexture } from './util/image';
 
-export async function loadSimpleEntity(r: Renderer, sprite: string): Promise<SpriteView> {
+export async function loadSimpleEntity(
+	r: Renderer,
+	sprite: string,
+	anchor: [number, number] = [0.5, 0.5],
+): Promise<SpriteView> {
 	const tile = await loadImage(`resources/sprite/entity/${sprite}.png`);
 	const texture = mkTexture(r.getContext(), tile);
 
-	const builder = new SpriteViewBuilder(r, texture);
-
-	const coords: SpriteCoords = [0, 0, 1, 1];
-	builder.addSprite(coords, coords);
+	const [x, y] = anchor;
 
+	const builder = new SpriteViewBuilder(r, texture);
+	builder.addSprite([-x, -y, 1 - x, 1 - y], [0, 0, 1, 1]);
 	return builder.build();
 }