From 3c51a1994f41b625823c4f15e92396b5498ce23c Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Tue, 24 Dec 2019 13:53:16 +0100
Subject: Move renderer into "runtime" subdirectory

---
 src/renderer/runtime/view/entity.ts | 72 +++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 src/renderer/runtime/view/entity.ts

(limited to 'src/renderer/runtime/view/entity.ts')

diff --git a/src/renderer/runtime/view/entity.ts b/src/renderer/runtime/view/entity.ts
new file mode 100644
index 0000000..ec91503
--- /dev/null
+++ b/src/renderer/runtime/view/entity.ts
@@ -0,0 +1,72 @@
+import { EntityData } from '../model/data/entity';
+import { Renderer } from './renderer/renderer';
+import { SpriteCoords, SpriteView, SpriteViewBuilder } from './sprite';
+import { loadImage, mkTexture } from './util/image';
+
+import { getJSON } from '../util';
+
+import { vec2 } from 'gl-matrix';
+
+export class EntityView {
+	public static async load(r: Renderer, name: string): Promise<EntityView> {
+		const data = new EntityData(await getJSON(`resources/entity/${name}.json`));
+		const tile = await loadImage(`resources/sprite/entity/${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 new EntityView(
+			data,
+			sprites,
+		);
+	}
+
+	private readonly totalTime: number;
+
+	private constructor(
+		public readonly data: EntityData,
+		public readonly sprites: SpriteView[],
+	) {
+		if (data.animation)
+			this.totalTime = data.animation.sequence.reduce((a, s) => a + s[0], 0);
+		else
+			this.totalTime = 0;
+	}
+
+	public getSpriteByTime(time: number): SpriteView {
+		time %= this.totalTime;
+
+		if (this.data.animation) {
+			for (const [len, sprite] of this.data.animation.sequence) {
+				time -= len;
+				if (time < 0)
+					return this.sprites[sprite];
+			}
+		}
+
+		return this.sprites[0];
+	}
+
+	public renderByTime(time: number) {
+		this.getSpriteByTime(time).render();
+	}
+
+}
-- 
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