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import { EntityData } from '../model/data/entity';
import { Renderer } from './renderer/renderer';
import { SpriteCoords, SpriteView, SpriteViewBuilder } from './sprite';
import { loadImage, mkTexture } from './util/image';
import { vec2 } from 'gl-matrix';
export async function loadEntity(
r: Renderer,
data: EntityData,
): Promise<SpriteView[]> {
const tile = await loadImage(`resources/sprite/entity/${data.sprite}.png`);
const [texture, size] = mkTexture(r, tile);
const frameSize = [size[0], size[1] / data.frames];
const offset = vec2.mul(vec2.create(), frameSize, data.anchor);
r.snapToGrid(offset, offset);
const coords: SpriteCoords = [
-offset[0],
-offset[1],
-offset[0] + frameSize[0],
-offset[1] + frameSize[1],
];
const sprites: SpriteView[] = [];
for (let frame = 0; frame < data.frames; frame++) {
const builder = new SpriteViewBuilder(r, texture);
builder.addSprite(coords, [0, frame / data.frames, 1, (frame + 1) / data.frames]);
sprites.push(builder.build());
}
return sprites;
}
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