77 lines
1.7 KiB
TypeScript
77 lines
1.7 KiB
TypeScript
import { Component } from '@esengine/ecs-framework';
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import { Vec3 } from 'cc';
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/**
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* 速度组件
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* 存储实体的移动速度和方向
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*/
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export class Velocity extends Component {
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/** 速度向量 */
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public velocity: Vec3 = new Vec3(0, 0, 0);
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/** 最大速度 */
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public maxSpeed: number = 200;
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/** 摩擦力 (0-1, 1表示无摩擦) */
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public friction: number = 0.98;
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constructor() {
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super();
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}
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/**
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* 设置速度
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*/
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public setVelocity(x: number, y: number, z: number = 0): void {
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this.velocity.set(x, y, z);
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this.clampToMaxSpeed();
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}
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/**
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* 添加速度
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*/
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public addVelocity(x: number, y: number, z: number = 0): void {
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this.velocity.x += x;
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this.velocity.y += y;
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this.velocity.z += z;
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this.clampToMaxSpeed();
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}
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/**
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* 应用摩擦力
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*/
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public applyFriction(): void {
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this.velocity.multiplyScalar(this.friction);
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// 当速度很小时直接设为0，避免无限减小
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if (this.velocity.length() < 0.1) {
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this.velocity.set(0, 0, 0);
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}
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}
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/**
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* 限制到最大速度
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*/
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private clampToMaxSpeed(): void {
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const currentSpeed = this.velocity.length();
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if (currentSpeed > this.maxSpeed) {
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this.velocity.normalize().multiplyScalar(this.maxSpeed);
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}
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}
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/**
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* 获取当前速度大小
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*/
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public getSpeed(): number {
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return this.velocity.length();
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}
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/**
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* 重置组件
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*/
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public reset(): void {
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this.velocity.set(0, 0, 0);
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this.maxSpeed = 200;
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this.friction = 0.98;
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}
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}
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