حرکت پلیر در یونیتی

var speed : float = 6.0;
 var twiceSpeed : float = 10.0;
 var jumpSpeed : float = 8.0;
 var gravity : float = 20.0;
 var rotateSpeed : float = 3.0;
 
 private var moveDirection : Vector3 = Vector3.zero;
 
 function Update() {
     var controller : CharacterController = GetComponent(CharacterController);
     if (controller.isGrounded) {
         //Grounded, so recalculate
         //Move directly from axes
         moveDirection = Vector3(0, 0, Input.GetAxis("Vertical"));
         
         //Rotation Code
         transform.Rotate(0, Input.GetAxis("Horizontal") * rotateSpeed, 0);
         
         moveDirection = transform.TransformDirection(moveDirection);
         moveDirection *= speed;
         
         if (Input.GetButton ("Jump")) {
             moveDirection.y = jumpSpeed;
         }
         
         //Animation Code
         if (Input.GetKeyDown("w"))
         {
             animation.Play("Full Walk");
         }
         else if (Input.GetKeyUp("w"))
         {
             animation.Stop();
             animation.Play("Idle");
         }
     }
     
     //Apply Gravity
     moveDirection.y -= gravity * Time.deltaTime;
     
     //Move Controller
     controller.Move(moveDirection * Time.deltaTime);
 }

اینم یکی دیگه :

http://www.scottpetrovic.com/blog/2009/11/unity3d-3rd-person-basic-movementrotation-wsource/