unity3d 移动与旋转 1

移动与旋转 1

player角色随asdw按键左右上下移动并旋转

public void Update()
    {            
        // Reset player rotation to look in the same direction as the camera.
        Quaternion tempRotation = myCamera.transform.rotation;
        tempRotation.x = 0;
        tempRotation.z = 0;        
        myTransform.rotation = tempRotation;
        
        float xMovement = Input.GetAxis("Horizontal");// The horizontal movement.
        float zMovement = Input.GetAxis("Vertical");// The vertical movement.
                
        // Are whe grounded, yes then move.
        if (IsGrounded()) {
            
            //Move player the same distance in each direction. Player must move in a circular motion.
            float tempAngle = Mathf.Atan2(zMovement,xMovement);  //获取到键盘输入的弧度

            xMovement *= Mathf.Abs(Mathf.Cos(tempAngle));//将键盘坐标系的弧度转换为新坐标系的x坐标(当斜边为1时cos弧度求到x)
            zMovement *= Mathf.Abs(Mathf.Sin(tempAngle));//同理求到y

            moveDirection = new Vector3(xMovement, 0, zMovement); //得到方向

            moveDirection = myTransform.TransformDirection(moveDirection);
            moveDirection *= moveSpeed;
            
            // Make the player jump.
            if (Input.GetButton("Jump"))
               {
                moveDirection.y = jumpSpeed; //跳跃
                // TODO Add jump animation.
               }            
           }
        
        // Apply gravity.
        moveDirection.y -= gravity * Time.deltaTime; //重力
                    
        // Are we moving.
        if(moveDirection.x == 0 && moveDirection.z == 0)
        {
            if(animator!=null)
            {
                animator.SetBool("run", false);    //停止移动后停止播放动画        
            }
        }
        else
        {
            // Make rotation object(The child object that contains animation) rotate to direction we are moving in.
            Vector3 temp = myTransform.position;
            temp.x += xMovement; //得到下一个目标点
            temp.z += zMovement;        
            myRotationObject.localRotation = Quaternion.Slerp(myRotationObject.localRotation, Quaternion.LookRotation(temp-myTransform.position), rotationSpeed * Time.deltaTime);    //使角色平滑转向下一个目标点
            if(animator!=null)
            {
                animator.SetBool("run", true); 
            }
        }
            
        controller.Move(moveDirection * Time.deltaTime); //开始移动                    
    }