Class CollisionModule

packages/particle/src/modules/CollisionModule.ts:34–222

 * Collision module for particle boundaries
 */
export class CollisionModule implements IParticleModule {
    readonly name = 'Collision';
    enabled = true;

    // ============= 边界设置 | Boundary Settings =============

    /** 边界类型 | Boundary type */
    boundaryType: BoundaryType = BoundaryType.Rectangle;

    /** 碰撞行为 | Collision behavior */
    behavior: CollisionBehavior = CollisionBehavior.Kill;

    // ============= 矩形边界 | Rectangle Boundary =============

    /** 左边界（相对于发射器）| Left boundary (relative to emitter) */
    left: number = -200;

    /** 右边界（相对于发射器）| Right boundary (relative to emitter) */
    right: number = 200;

    /** 上边界（相对于发射器）| Top boundary (relative to emitter) */
    top: number = -200;

    /** 下边界（相对于发射器）| Bottom boundary (relative to emitter) */
    bottom: number = 200;

    // ============= 圆形边界 | Circle Boundary =============

    /** 圆形边界半径 | Circle boundary radius */
    radius: number = 200;

    // ============= 反弹设置 | Bounce Settings =============

    /** 反弹系数 (0-1)，1 = 完全弹性 | Bounce factor (0-1), 1 = fully elastic */
    bounceFactor: number = 0.8;

    /** 最小速度阈值（低于此速度时销毁）| Min velocity threshold (kill if below) */
    minVelocityThreshold: number = 5;

    /** 反弹时的生命损失 (0-1) | Life loss on bounce (0-1) */
    lifeLossOnBounce: number = 0;

    // ============= 发射器位置（运行时设置）| Emitter Position (set at runtime) =============

    /** 发射器 X 坐标 | Emitter X position */
    emitterX: number = 0;

    /** 发射器 Y 坐标 | Emitter Y position */
    emitterY: number = 0;

    /** 粒子死亡标记数组 | Particle death flag array */
    private _particlesToKill: Set<Particle> = new Set();

    /**
     * 获取需要销毁的粒子
     * Get particles to kill
     */
    getParticlesToKill(): Set<Particle> {