now it works with n

engine/Entity.ts

@@ -1,6 +1,5 @@
-import { loadImage } from "#/lib/loadImage.ts";
-import { createSprite, type Sprite } from "#/lib/Sprite.ts";
-import { createVector, type Vector } from "#/lib/Vector.ts";
+import type { Sprite } from "#/lib/Sprite.ts";
+import type { Vector } from "#/lib/Vector.ts";
 
 export type Entity = {
 	id: string;
@@ -16,9 +15,12 @@ export type EntityInstance = {
 	sprite: Sprite;
 };
 
-export type Draw = (ctx: CanvasRenderingContext2D) => void;
+export type Draw = (
+	entity: EntityInstance,
+	ctx: CanvasRenderingContext2D,
+) => void;
 
-export type Process = (delta: number) => void;
+export type Process = (entity: EntityInstance, delta: number) => void;
 
 export function createEntity(
 	id: string,
@@ -29,25 +31,15 @@ export function createEntity(
 	return { id, width, height, src };
 }
 
-export const entityMap = new Map<string, EntityInstance>();
+export const entityMap = new Map<string, Entity>();
 export const entityDrawMap = new Map<string, Draw>();
 export const entityProcessMap = new Map<string, Process>();
 
-export async function useEntity(data: Entity): Promise<{
+export function useEntity(data: Entity): {
 	draw: (fn: Draw) => void;
 	process: (fn: Process) => void;
-	entity: EntityInstance;
-}> {
-	const sprite = createSprite(await loadImage(data.src), 2, 4);
-
-	const entity: EntityInstance = {
-		position: createVector(),
-		width: data.width,
-		height: data.height,
-		sprite,
-	};
-
-	entityMap.set(data.id, entity);
+} {
+	entityMap.set(data.id, data);
 
 	return {
 		draw(fn: Draw): void {
@@ -56,6 +48,5 @@ export async function useEntity(data: Entity): Promise<{
 		process(fn: Process): void {
 			entityProcessMap.set(data.id, fn);
 		},
-		entity,
 	};
 }

engine/Scene.ts

@@ -1,3 +1,6 @@
+import { loadImage } from "#/lib/loadImage.ts";
+import { createSprite } from "#/lib/Sprite.ts";
+import { createVector, type Vector } from "#/lib/Vector.ts";
 import {
 	type Draw as EntityDraw,
 	type EntityInstance,
@@ -11,7 +14,10 @@ export type SceneData = {
 	id: string;
 	width: number;
 	height: number;
-	entities: string[];
+	entities: Array<{
+		id: string;
+		position: Vector;
+	}>;
 };
 
 export type Scene = {
@@ -45,14 +51,14 @@ export const currentScene: Scene = {
 };
 
 function drawEntities(ctx: CanvasRenderingContext2D): void {
-	for (const entity of currentScene.entityPool) {
-		entity.draw(ctx);
+	for (const entry of currentScene.entityPool) {
+		entry.draw(entry.entity, ctx);
 	}
 }
 
 function processEntities(delta: number): void {
-	for (const entity of currentScene.entityPool) {
-		entity.process(delta);
+	for (const entry of currentScene.entityPool) {
+		entry.process(entry.entity, delta);
 	}
 }
 
@@ -89,12 +95,20 @@ export async function loadScene(name: string): Promise<void> {
 	currentScene.data = data;
 
 	for (const entity of data.entities) {
-		await import(`#/entities/${entity}/index.ts`);
+		await import(`#/entities/${entity.id}/index.ts`);
+
+		const e = entityMap.get(entity.id)!;
+		const entityInstance: EntityInstance = {
+			position: entity.position,
+			width: e.width,
+			height: e.height,
+			sprite: createSprite(await loadImage(e.src), 2, 4), // FIXME
+		};
 
 		currentScene.entityPool.push({
-			draw: entityDrawMap.get(entity)!,
-			process: entityProcessMap.get(entity)!,
-			entity: entityMap.get(entity)!,
+			draw: entityDrawMap.get(entity.id)!,
+			process: entityProcessMap.get(entity.id)!,
+			entity: entityInstance,
 		});
 	}
 

entities/testEntity/index.ts

@@ -1,11 +1,18 @@
-import { useEntity } from "#/engine/Entity.ts";
+import { type EntityInstance, useEntity } from "#/engine/Entity.ts";
 import { drawSprite } from "#/lib/Sprite.ts";
 import data from "./data.json";
 
-const { draw, process, entity } = await useEntity(data);
+const { draw, process } = useEntity(data);
 
-draw((ctx: CanvasRenderingContext2D) => {
-	drawSprite(ctx, entity.sprite, 0, 0, 16, 16);
+draw((entity: EntityInstance, ctx: CanvasRenderingContext2D) => {
+	drawSprite(
+		ctx,
+		entity.sprite,
+		entity.position.x,
+		entity.position.y,
+		entity.width,
+		entity.height,
+	);
 });
 
-process((_delta) => {});
+process((_entity, _delta) => {});

scenes/testScene/data.json

@@ -2,5 +2,20 @@
 	"id": "testScene",
 	"width": 48,
 	"height": 48,
-	"entities": ["testEntity"]
+	"entities": [
+		{
+			"id": "testEntity",
+			"position": {
+				"x": 0,
+				"y": 0
+			}
+		},
+		{
+			"id": "testEntity",
+			"position": {
+				"x": 16,
+				"y": 16
+			}
+		}
+	]
 }