63 lines
1.3 KiB
TypeScript
63 lines
1.3 KiB
TypeScript
export type SceneData = {
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id: string;
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width: number;
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height: number;
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entities: string[];
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};
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export type Scene = {
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data: SceneData;
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process: Process;
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};
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export type Process = (ctx: CanvasRenderingContext2D, delta: number) => void;
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export type SceneChangeCallback = (from: Scene, to: Scene) => void;
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let sceneChangeCallback: SceneChangeCallback = (): void => {};
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const sceneDataMap = new Map<string, SceneData>();
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const sceneProcessMap = new Map<string, Process>();
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export const currentScene: Scene = {
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data: {
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id: "",
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width: 0,
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height: 0,
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entities: [],
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},
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process: () => {},
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};
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export function useScene(data: SceneData): {
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process: (fn: Process) => void;
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} {
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sceneDataMap.set(data.id, data);
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return {
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process(fn: Process): void {
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sceneProcessMap.set(data.id, fn);
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},
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};
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}
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export function setSceneChangeCallback(callback: SceneChangeCallback) {
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sceneChangeCallback = callback;
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}
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export function changeScene(scene: Scene): void {
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sceneChangeCallback(currentScene, scene);
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currentScene.data = scene.data;
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currentScene.process = scene.process;
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}
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export async function loadScene(name: string): Promise<void> {
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await import(`#/scenes/${name}/index.ts`);
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const data = sceneDataMap.get(name)!;
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currentScene.data = data;
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const process = sceneProcessMap.get(name)!;
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currentScene.process = process;
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}
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