79 lines
2.2 KiB
TypeScript
79 lines
2.2 KiB
TypeScript
import { _decorator, Component, Node, Vec3, Camera } from 'cc';
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const { ccclass, property } = _decorator;
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@ccclass('CameraFollow')
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export class CameraFollow extends Component {
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@property(Node)
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target: Node | null = null; // 要跟随的目标（玩家）
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@property({ range: [0.1, 10] })
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followSpeed: number = 5.0; // 跟随速度
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@property(Vec3)
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offset: Vec3 = new Vec3(0, 0, 10); // 相机相对目标的偏移
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@property({ range: [0, 1] })
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smoothness: number = 0.1; // 平滑度，0为瞬间跟随，1为最慢跟随
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private camera: Camera | null = null;
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onLoad() {
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// 获取相机组件
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this.camera = this.getComponent(Camera);
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if (!this.camera) {
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console.error('CameraFollow: 未找到Camera组件');
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}
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}
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start() {
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if (this.target) {
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// 初始化相机位置
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const initialPos = this.target.position.clone();
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initialPos.add(this.offset);
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this.node.position = initialPos;
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}
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}
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update(deltaTime: number) {
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if (!this.target) return;
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// 计算目标位置
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const targetPosition = this.target.position.clone();
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targetPosition.add(this.offset);
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// 使用插值实现平滑跟随
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const currentPosition = this.node.position;
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const newPosition = new Vec3();
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// 根据平滑度设置插值速度
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const lerpFactor = Math.min(1.0, this.followSpeed * deltaTime * (1 - this.smoothness + 0.1));
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Vec3.lerp(newPosition, currentPosition, targetPosition, lerpFactor);
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this.node.position = newPosition;
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}
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// 设置跟随目标
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setTarget(target: Node) {
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this.target = target;
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if (target) {
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const initialPos = target.position.clone();
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initialPos.add(this.offset);
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this.node.position = initialPos;
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}
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}
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// 设置偏移量
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setOffset(offset: Vec3) {
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this.offset = offset;
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}
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// 瞬间移动到目标位置
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snapToTarget() {
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if (!this.target) return;
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const targetPosition = this.target.position.clone();
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targetPosition.add(this.offset);
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this.node.position = targetPosition;
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}
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} |