Laya2.13.3在Web条件下使用键盘控制相机移动

需求：在Laya开发时，常常没法移动相机来观察场内的环境，故制作一个移动相机的脚本来是实现此功能，目前先使用键盘后续会添加鼠标控制移动旋转等功能。

     onEnable(){this.camera = new Laya.Camera(0, 0.1, 100);this._tempVector3 = new Laya.Vector3(0, 0, 0);this.KeyBoardManager = Laya.KeyBoardManager;Laya.timer.frameLoop(2, this, this.onUpdate);}	onUpdate(){this.KeyBoardManager.hasKeyDown(87) && this.moveForward(-5 * 0.1);//Wthis.KeyBoardManager.hasKeyDown(83) && this.moveForward(5 * 0.1);//Sthis.KeyBoardManager.hasKeyDown(65) && this.moveRight(-5 * 0.1);//Athis.KeyBoardManager.hasKeyDown(68) && this.moveRight(5 * 0.1);//D}moveForward(distance) {this._tempVector3.x = this._tempVector3.y = 0;this._tempVector3.z += distance;this.mainCamera.transform.translate(this._tempVector3);}/*** 向右移动。* @param distance 移动距离。*/moveRight(distance){this._tempVector3.y = this._tempVector3.z = 0;this._tempVector3.x += distance;this.mainCamera.transform.translate(this._tempVector3);}