99 lines
3.4 KiB
TypeScript
99 lines
3.4 KiB
TypeScript
|
import { EntitySystem, Entity, Matcher, Time } from '@esengine/ecs-framework';
|
|||
|
|
import { PositionComponent } from '../components/PositionComponent';
|
|||
|
|
import { VelocityComponent } from '../components/VelocityComponent';
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 移动系统 - 处理实体的移动逻辑
|
|||
|
|
*
|
|||
|
|
* EntitySystem示例：
|
|||
|
|
* 1. 使用Matcher指定需要的组件（Position + Velocity）
|
|||
|
|
* 2. 每帧更新所有移动实体的位置
|
|||
|
|
* 3. 展示组件间的协作
|
|||
|
|
*/
|
|||
|
|
export class MovementSystem extends EntitySystem {
|
|||
|
|
constructor() {
|
|||
|
|
// 只处理同时拥有PositionComponent和VelocityComponent的实体
|
|||
|
|
super(Matcher.empty().all(PositionComponent, VelocityComponent));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 每帧执行：更新所有移动实体的位置
|
|||
|
|
*/
|
|||
|
|
protected process(entities: Entity[]): void {
|
|||
|
|
for (const entity of entities) {
|
|||
|
|
const position = entity.getComponent(PositionComponent);
|
|||
|
|
const velocity = entity.getComponent(VelocityComponent);
|
|||
|
|
|
|||
|
|
// 基本移动：位置 = 当前位置 + 速度 * 时间
|
|||
|
|
position.move(
|
|||
|
|
velocity.velocity.x * Time.deltaTime,
|
|||
|
|
velocity.velocity.y * Time.deltaTime,
|
|||
|
|
velocity.velocity.z * Time.deltaTime
|
|||
|
|
);
|
|||
|
|
|
|||
|
|
// 应用阻尼（摩擦力）
|
|||
|
|
velocity.applyDamping(Time.deltaTime);
|
|||
|
|
|
|||
|
|
// 可选：添加边界检查
|
|||
|
|
this.checkBoundaries(position, velocity);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 边界检查（可选功能）
|
|||
|
|
* 这个方法演示了如何在系统中实现额外的游戏逻辑
|
|||
|
|
*/
|
|||
|
|
private checkBoundaries(position: PositionComponent, velocity: VelocityComponent) {
|
|||
|
|
const bounds = {
|
|||
|
|
left: -400,
|
|||
|
|
right: 400,
|
|||
|
|
top: 300,
|
|||
|
|
bottom: -300
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
// 检查X轴边界
|
|||
|
|
if (position.position.x < bounds.left) {
|
|||
|
|
position.position.x = bounds.left;
|
|||
|
|
velocity.velocity.x = Math.abs(velocity.velocity.x); // 反弹
|
|||
|
|
} else if (position.position.x > bounds.right) {
|
|||
|
|
position.position.x = bounds.right;
|
|||
|
|
velocity.velocity.x = -Math.abs(velocity.velocity.x); // 反弹
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// 检查Y轴边界
|
|||
|
|
if (position.position.y < bounds.bottom) {
|
|||
|
|
position.position.y = bounds.bottom;
|
|||
|
|
velocity.velocity.y = Math.abs(velocity.velocity.y); // 反弹
|
|||
|
|
} else if (position.position.y > bounds.top) {
|
|||
|
|
position.position.y = bounds.top;
|
|||
|
|
velocity.velocity.y = -Math.abs(velocity.velocity.y); // 反弹
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 系统初始化时调用
|
|||
|
|
* 可以在这里设置系统级别的配置
|
|||
|
|
*/
|
|||
|
|
public initialize(): void {
|
|||
|
|
super.initialize();
|
|||
|
|
console.log("MovementSystem 已初始化 - 开始处理实体移动");
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 获取系统统计信息（用于调试）
|
|||
|
|
*/
|
|||
|
|
public getStats(): { processedEntities: number; totalMovement: number } {
|
|||
|
|
let totalMovement = 0;
|
|||
|
|
const entities = this.entities;
|
|||
|
|
|
|||
|
|
for (const entity of entities) {
|
|||
|
|
const position = entity.getComponent(PositionComponent);
|
|||
|
|
totalMovement += position.getMovementDistance();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return {
|
|||
|
|
processedEntities: entities.length,
|
|||
|
|
totalMovement: totalMovement
|
|||
|
|
};
|
|||
|
|
}
|
|||
|
|
}
|