48 lines
1.4 KiB
TypeScript
48 lines
1.4 KiB
TypeScript
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import { _decorator, Component, Node, Tween, tween, TweenSystem } from 'cc';
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const { ccclass, property, float } = _decorator;
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@ccclass('TweenPath')
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export class TweenPath extends Component {
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@property(Node)
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private target: Node;
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@property([Node])
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private waypoints: Node[] = [];
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@property(Node)
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private startPoint: Node;
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@float
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private duration = 2;
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private tweenPath: Tween<Node>;
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protected onEnable(): void {
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this.startFollow(1);
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}
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protected onDisable(): void {
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this.stopFollow();
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}
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private followPath(duration: number) {
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this.tweenPath = tween(this.target);
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for (let i = 0; i < this.waypoints.length; i++) {
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this.tweenPath.to(duration, {
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position: this.waypoints[i].getPosition(),
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});
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}
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// repeatForever method bug: not repeat on completed tween, use repeat(Number.MAX_SAFE_INTEGER, this.tweenPath) instead repeatForever to make infinite loop
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this.tweenPath.repeat(Number.MAX_SAFE_INTEGER, this.tweenPath);
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this.tweenPath.start();
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}
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public stopFollow() {
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this.tweenPath?.stop();
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}
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public startFollow(speed: number = 1) {
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if (this.waypoints.length > 0) {
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this.target.setPosition(this.startPoint?.position || this.waypoints[this.waypoints.length - 1].position);
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this.followPath(this.duration / speed);
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}
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}
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}
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