float x = this.joystick.JoystickTouch.x;//摇杆坐标系的X坐标
float y = this.joystick.JoystickTouch.y;//摇杆坐标系的Y坐标
if (y != 0 || x != 0)
{
   //设置角色的朝向（朝向当前坐标+摇杆偏移量）  
   transform.LookAt(new Vector3(transform.position.x + x, transform.position.y, transform.position.z + y));
   //移动玩家的位置（按朝向位置移动）
   this.c_ctrl.Move(transform.forward * Time.deltaTime * 4);
   //transform.Translate(Vector3.forward * Time.deltaTime * 4);

   //播放奔跑动画  
   this.anim.CrossFade("Run with carbine aimed", 0.2f);
}