core库demo更新
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YHH
387
examples/core-demos/src/demos/SerializationDemo.ts
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387
examples/core-demos/src/demos/SerializationDemo.ts
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import { DemoBase, DemoInfo } from './DemoBase';
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import {
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Component,
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ECSComponent,
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Entity,
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EntitySystem,
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Serializable,
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Serialize,
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SerializeAsMap
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} from '@esengine/ecs-framework';
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// ===== 组件定义 =====
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@ECSComponent('SerDemo_Position')
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@Serializable({ version: 1, typeId: 'SerDemo_Position' })
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class PositionComponent extends Component {
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@Serialize() x: number = 0;
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@Serialize() y: number = 0;
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constructor(x: number = 0, y: number = 0) {
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super();
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this.x = x;
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this.y = y;
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}
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}
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@ECSComponent('SerDemo_Velocity')
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@Serializable({ version: 1, typeId: 'SerDemo_Velocity' })
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class VelocityComponent extends Component {
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@Serialize() vx: number = 0;
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@Serialize() vy: number = 0;
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constructor(vx: number = 0, vy: number = 0) {
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super();
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this.vx = vx;
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this.vy = vy;
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}
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}
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@ECSComponent('SerDemo_Renderable')
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@Serializable({ version: 1, typeId: 'SerDemo_Renderable' })
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class RenderableComponent extends Component {
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@Serialize() color: string = '#ffffff';
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@Serialize() radius: number = 10;
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constructor(color: string = '#ffffff', radius: number = 10) {
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super();
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this.color = color;
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this.radius = radius;
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}
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}
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@ECSComponent('SerDemo_Player')
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@Serializable({ version: 1, typeId: 'SerDemo_Player' })
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class PlayerComponent extends Component {
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@Serialize() name: string = 'Player';
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@Serialize() level: number = 1;
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@Serialize() health: number = 100;
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@SerializeAsMap() inventory: Map<string, number> = new Map();
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constructor(name: string = 'Player') {
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super();
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this.name = name;
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}
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}
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// ===== 系统定义 =====
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class MovementSystem extends EntitySystem {
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update() {
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const entities = this.scene.entities.buffer;
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for (const entity of entities) {
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const pos = entity.getComponent(PositionComponent);
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const vel = entity.getComponent(VelocityComponent);
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if (pos && vel) {
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pos.x += vel.vx;
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pos.y += vel.vy;
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// 边界反弹
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if (pos.x < 0 || pos.x > 1200) vel.vx *= -1;
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if (pos.y < 0 || pos.y > 600) vel.vy *= -1;
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}
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}
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}
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}
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class RenderSystem extends EntitySystem {
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private canvas: HTMLCanvasElement;
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private ctx: CanvasRenderingContext2D;
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constructor(canvas: HTMLCanvasElement) {
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super();
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this.canvas = canvas;
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this.ctx = canvas.getContext('2d')!;
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}
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update() {
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// 清空画布
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this.ctx.fillStyle = '#0a0a15';
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this.ctx.fillRect(0, 0, this.canvas.width, this.canvas.height);
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// 渲染所有实体
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const entities = this.scene.entities.buffer;
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for (const entity of entities) {
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const pos = entity.getComponent(PositionComponent);
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const render = entity.getComponent(RenderableComponent);
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if (pos && render) {
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this.ctx.fillStyle = render.color;
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this.ctx.beginPath();
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this.ctx.arc(pos.x, pos.y, render.radius, 0, Math.PI * 2);
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this.ctx.fill();
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// 如果是玩家，显示名字
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const player = entity.getComponent(PlayerComponent);
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if (player) {
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this.ctx.fillStyle = 'white';
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this.ctx.font = '12px Arial';
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this.ctx.textAlign = 'center';
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this.ctx.fillText(player.name, pos.x, pos.y - render.radius - 5);
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}
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}
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}
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}
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}
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export class SerializationDemo extends DemoBase {
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private renderSystem!: RenderSystem;
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private jsonData: string = '';
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private binaryData: Buffer | null = null;
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getInfo(): DemoInfo {
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return {
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id: 'serialization',
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name: '场景序列化',
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description: '演示场景的序列化和反序列化功能，支持JSON和二进制格式',
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category: '核心功能',
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icon: '💾'
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};
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}
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setup() {
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// @ECSComponent装饰器会自动注册组件到ComponentRegistry
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// ComponentRegistry会被序列化系统自动使用，无需手动注册
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// 添加系统
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this.renderSystem = new RenderSystem(this.canvas);
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this.scene.addEntityProcessor(new MovementSystem());
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this.scene.addEntityProcessor(this.renderSystem);
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// 创建初始实体
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this.createInitialEntities();
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// 创建控制面板
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this.createControls();
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}
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private createInitialEntities() {
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// 创建玩家
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const player = this.scene.createEntity('Player');
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player.addComponent(new PositionComponent(600, 300));
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player.addComponent(new VelocityComponent(2, 1.5));
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player.addComponent(new RenderableComponent('#4a9eff', 15));
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const playerComp = new PlayerComponent('Hero');
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playerComp.level = 5;
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playerComp.health = 100;
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playerComp.inventory.set('sword', 1);
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playerComp.inventory.set('potion', 5);
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player.addComponent(playerComp);
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// 创建一些随机实体
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for (let i = 0; i < 5; i++) {
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this.createRandomEntity();
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}
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// 设置场景数据
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this.scene.sceneData.set('weather', 'sunny');
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this.scene.sceneData.set('gameTime', 12.5);
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this.scene.sceneData.set('difficulty', 'normal');
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}
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private createRandomEntity() {
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const entity = this.scene.createEntity(`Entity_${Date.now()}`);
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entity.addComponent(new PositionComponent(
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Math.random() * this.canvas.width,
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Math.random() * this.canvas.height
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));
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entity.addComponent(new VelocityComponent(
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(Math.random() - 0.5) * 3,
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(Math.random() - 0.5) * 3
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));
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const colors = ['#ff6b6b', '#4ecdc4', '#ffe66d', '#a8dadc', '#f1faee'];
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entity.addComponent(new RenderableComponent(
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colors[Math.floor(Math.random() * colors.length)],
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5 + Math.random() * 10
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));
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}
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createControls() {
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this.controlPanel.innerHTML = `
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<div class="control-section">
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<h4>实体控制</h4>
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<div class="button-group">
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<button id="addEntity" class="secondary">添加随机实体</button>
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<button id="clearEntities" class="danger">清空所有实体</button>
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</div>
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</div>
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<div class="control-section">
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<h4>序列化操作</h4>
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<div class="button-group">
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<button id="serializeJSON">序列化为JSON</button>
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<button id="serializeBinary" class="success">序列化为二进制</button>
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<button id="deserialize" class="secondary">反序列化恢复</button>
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</div>
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</div>
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<div class="control-section">
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<h4>本地存储</h4>
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<div class="button-group">
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<button id="saveLocal" class="success">保存到LocalStorage</button>
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<button id="loadLocal" class="secondary">从LocalStorage加载</button>
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</div>
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</div>
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<div class="control-section">
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<h4>场景数据</h4>
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<div class="input-group">
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<label>天气</label>
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<input type="text" id="weather" value="sunny" placeholder="sunny/rainy/snowy">
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</div>
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<div class="input-group">
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<label>游戏时间</label>
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<input type="number" id="gameTime" value="12.5" step="0.1" min="0" max="24">
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</div>
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<button id="updateSceneData" class="secondary">更新场景数据</button>
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</div>
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<div class="stats-panel">
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<div class="stat-item">
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<div class="stat-label">实体数量</div>
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<div class="stat-value" id="entityCount">0</div>
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</div>
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<div class="stat-item">
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<div class="stat-label">JSON大小</div>
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<div class="stat-value" id="jsonSize">0B</div>
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</div>
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<div class="stat-item">
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<div class="stat-label">二进制大小</div>
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<div class="stat-value" id="binarySize">0B</div>
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</div>
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<div class="stat-item">
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<div class="stat-label">压缩率</div>
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<div class="stat-value" id="compressionRatio">0%</div>
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</div>
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</div>
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<div class="control-section">
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<h4>序列化数据预览</h4>
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<div style="max-height: 200px; overflow-y: auto; background: rgba(0,0,0,0.3); padding: 10px; border-radius: 6px; font-family: monospace; font-size: 11px; color: #8892b0; word-break: break-all;" id="dataPreview">
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点击序列化按钮查看数据...
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</div>
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</div>
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`;
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// 绑定事件
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this.bindEvents();
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}
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private bindEvents() {
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document.getElementById('addEntity')!.addEventListener('click', () => {
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this.createRandomEntity();
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this.updateStats();
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this.showToast('添加了一个随机实体');
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});
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document.getElementById('clearEntities')!.addEventListener('click', () => {
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this.scene.destroyAllEntities();
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this.createInitialEntities();
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this.updateStats();
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this.showToast('场景已重置');
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});
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document.getElementById('serializeJSON')!.addEventListener('click', () => {
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this.jsonData = this.scene.serialize({ format: 'json', pretty: true }) as string;
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this.updateDataPreview(this.jsonData, 'json');
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this.updateStats();
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this.showToast('已序列化为JSON格式');
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});
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document.getElementById('serializeBinary')!.addEventListener('click', () => {
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this.binaryData = this.scene.serialize({ format: 'binary' }) as Buffer;
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const base64 = this.binaryData.toString('base64');
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this.updateDataPreview(`Binary Data (Base64):\n${base64.substring(0, 500)}...`, 'binary');
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this.updateStats();
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this.showToast('已序列化为二进制格式', '🔐');
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});
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document.getElementById('deserialize')!.addEventListener('click', () => {
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const data = this.binaryData || this.jsonData;
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if (!data) {
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this.showToast('请先执行序列化操作', '⚠️');
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return;
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}
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this.scene.deserialize(data, {
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strategy: 'replace'
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// componentRegistry会自动从ComponentRegistry获取，无需手动传入
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});
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this.updateStats();
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this.showToast('场景已恢复');
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});
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document.getElementById('saveLocal')!.addEventListener('click', () => {
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const jsonData = this.scene.serialize({ format: 'json' }) as string;
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localStorage.setItem('ecs_demo_scene', jsonData);
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this.showToast('已保存到LocalStorage', '💾');
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});
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document.getElementById('loadLocal')!.addEventListener('click', () => {
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const data = localStorage.getItem('ecs_demo_scene');
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if (!data) {
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this.showToast('LocalStorage中没有保存的场景', '⚠️');
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return;
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}
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this.scene.deserialize(data, {
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strategy: 'replace'
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// componentRegistry会自动从ComponentRegistry获取，无需手动传入
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});
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this.updateStats();
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this.showToast('已从LocalStorage加载', '📂');
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});
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document.getElementById('updateSceneData')!.addEventListener('click', () => {
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const weather = (document.getElementById('weather') as HTMLInputElement).value;
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const gameTime = parseFloat((document.getElementById('gameTime') as HTMLInputElement).value);
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this.scene.sceneData.set('weather', weather);
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this.scene.sceneData.set('gameTime', gameTime);
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this.showToast('场景数据已更新');
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});
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// 初始更新统计
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this.updateStats();
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}
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private updateDataPreview(data: string, format: string) {
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const preview = document.getElementById('dataPreview')!;
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if (format === 'json') {
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const truncated = data.length > 1000 ? data.substring(0, 1000) + '\n...(truncated)' : data;
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preview.textContent = truncated;
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} else {
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preview.textContent = data;
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}
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}
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private updateStats() {
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const entityCount = this.scene.entities.count;
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document.getElementById('entityCount')!.textContent = entityCount.toString();
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// 计算JSON大小
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if (this.jsonData) {
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const jsonSize = new Blob([this.jsonData]).size;
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document.getElementById('jsonSize')!.textContent = this.formatBytes(jsonSize);
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}
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// 计算二进制大小
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if (this.binaryData) {
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const binarySize = this.binaryData.length;
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document.getElementById('binarySize')!.textContent = this.formatBytes(binarySize);
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// 计算压缩率
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if (this.jsonData) {
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const jsonSize = new Blob([this.jsonData]).size;
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const ratio = ((1 - binarySize / jsonSize) * 100).toFixed(1);
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document.getElementById('compressionRatio')!.textContent = `${ratio}%`;
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}
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}
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}
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private formatBytes(bytes: number): string {
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if (bytes < 1024) return `${bytes}B`;
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if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)}KB`;
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return `${(bytes / (1024 * 1024)).toFixed(1)}MB`;
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}
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protected render() {
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// RenderSystem会处理渲染
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}
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}
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