给我一份cocosCreator 摄像机跟随人物移动的typescript代码，人物拥有边界限制

好的，以下是一份 TypeScript 代码示例：

const {ccclass, property} = cc._decorator;

@ccclass
export default class CameraController extends cc.Component {

    @property(cc.Node)
    target: cc.Node = null; // 需要跟随的目标节点

    @property(cc.Rect)
    bounds: cc.Rect = new cc.Rect(-100, -100, 200, 200); // 摄像机移动的边界限制

    private _camera: cc.Camera = null;

    onLoad() {
        this._camera = this.getComponent(cc.Camera);
    }

    lateUpdate() {
        if (!this.target) return;

        let targetPos = this.target.convertToWorldSpaceAR(cc.Vec2.ZERO);
        let cameraPos = this.node.position;

        // 计算目标节点与摄像机之间的距离
        let distanceX = targetPos.x - cameraPos.x;
        let distanceY = targetPos.y - cameraPos.y;

        // 根据距离计算新的摄像机位置
        let newX = cameraPos.x;
        let newY = cameraPos.y;

        if (distanceX > this.bounds.width / 2) {
            newX = targetPos.x - this.bounds.width / 2;
        } else if (distanceX < -this.bounds.width / 2) {
            newX = targetPos.x + this.bounds.width / 2;
        }

        if (distanceY > this.bounds.height / 2) {
            newY = targetPos.y - this.bounds.height / 2;
        } else if (distanceY < -this.bounds.height / 2) {
            newY = targetPos.y + this.bounds.height / 2;
        }

        this.node.position = cc.v2(newX, newY);
    }
}

这份代码实现了让摄像机跟随目标节点移动，并且可以设置边界限制，确保摄像机不会移动出指定区域。