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public float speed;//移動速度 public Rigidbody rb; public Camera camera; public float turningSmoothing = 0.3f; private Vector3 facingDirection ; private Plane plan; void Awake () { //垂直與物體y軸的平面 plan = new Plane (transform.up, new Vector3 (2, transform.position.y, 4)); } void Start () { rb = GetComponent<Rigidbody> (); }查看全部
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//（系統(tǒng)函數(shù)）沒daltTime調(diào)用一次(通常處理物理運算) void FixedUpdate () { serFaceingDirection (); //使物體朝著鼠標(biāo)旋轉(zhuǎn) UpdateRotation (); } //設(shè)置旋轉(zhuǎn)的方向(及鼠標(biāo)在物體運動平面的坐標(biāo)（x,0,z）) public void serFaceingDirection () { Vector3 mosePosition = transform.TransformPoint (Input.mousePosition); facingDirection = ScreenPointToWorldPointOnPlane (Input.mousePosition, plan, camera); facingDirection.y = transform.position.y; Debug.DrawLine(transform.position,facingDirection); }查看全部
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//放回射線與平面相交的點 public Vector3 ScreenPointToWorldPointOnPlane (Vector3 screenPoint, Plane plane, Camera camera) { // Set up a ray corresponding to the screen position Ray ray = camera.ScreenPointToRay (screenPoint); // Find out where the ray intersects with the plane float dist=0f; plane.Raycast(ray ,out dist );//射線與平面相交是放回true，并設(shè)置dist的值（及焦點與射線源點的距離） Vector3 vect=ray.GetPoint(dist);//放回沿射線距離為dist的點 return vect; }查看全部
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//更新物體的旋轉(zhuǎn)角度（及剛體的角速度） void UpdateRotation () { // Setup player to face facingDirection, or if that is zero, then the movementDirection Vector3 faceDir = facingDirection; // Make the character rotate towards the target rotation if (faceDir == Vector3.zero) { GetComponent<Rigidbody> ().angularVelocity = Vector3.zero; } else { float rotationAngle = AngleAroundAxis (transform.forward, faceDir, Vector3.up); //設(shè)置剛體的角速度 GetComponent<Rigidbody> ().angularVelocity = (Vector3.up * rotationAngle * turningSmoothing); } }查看全部
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將老師間的人物跟著鼠標(biāo)旋轉(zhuǎn)的代碼整理了下： // The angle between dirA and dirB around axis(向量a,b以軸axis的夾角) static float AngleAroundAxis (Vector3 dirA, Vector3 dirB, Vector3 axis) { // Project A and B onto the plane orthogonal target axis dirA = dirA - Vector3.Project (dirA, axis);//dirA到軸axis的投影（計算dirA投影在垂直于axis軸的平面的向量） dirB = dirB - Vector3.Project (dirB, axis);//dirB到軸axis的投影（計算dirB投影在垂直于axis軸的平面的向量 // Find (positive) angle between A and B float angle = Vector3.Angle (dirA, dirB);//得到鼠標(biāo)前后兩次位置在平面上的轉(zhuǎn)動的角度 // Return angle multiplied with 1 or -1 return angle * (Vector3.Dot (axis, Vector3.Cross (dirA, dirB)) < 0 ? -1 : 1);//放回的值隨夾角的增大而減小 }查看全部
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Vector3 direction = Input.GetAxis("Horizontal") * transform.right + Input.GetAxis("Vertical") * transform.forward; transform.position = transform.position + walkSpeed * direction * Time.deltaTime;查看全部
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prfabs作用 模板 1.重復(fù)利用 2.同時修改查看全部
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