//IDLE STATE
        if (state == PlayerState.Idle) {
            if (Input.GetKeyDown (KeyCode.W) || Input.GetKeyDown (KeyCode.S) || Input.GetKeyDown (KeyCode.D) || Input.GetKeyDown (KeyCode.A)) {
                SetMovingState ();
            }
        }
        //MOVING STATE
        else if (state == PlayerState.Move) {
            targetDirection.Set (0, 0, 0);
            if (Input.GetKey (KeyCode.W)) {
                targetDirection.z += 1.0f;
                forwardSpeed = speed;
            }
            if (Input.GetKey (KeyCode.S)) {
                targetDirection.z -= 1.0f;
                forwardSpeed = speed;
            }

            if (Input.GetKey (KeyCode.D)) {
                targetDirection.x += 1.0f;
                forwardSpeed = speed;
            }
            if (Input.GetKey (KeyCode.A)) {
                targetDirection.x -= 1.0f;
                forwardSpeed = speed;
            }

            if (targetDirection.x == 0.0f && targetDirection.z == 0.0f) {
                SetDampingSate ();
                return;
            }

            targetRotation = Quaternion.LookRotation (targetDirection);
            rigidBody.MoveRotation (Quaternion.Slerp (transform.rotation, targetRotation, rotationSpeed * Time.fixedDeltaTime));
            rigidBody.MovePosition (transform.position + transform.forward * forwardSpeed * Time.fixedDeltaTime);
        }

        //DAMPING STATE
        else if (state == PlayerState.Damping) {
            if (Input.GetKeyDown (KeyCode.W) || Input.GetKeyDown (KeyCode.S) || Input.GetKeyDown (KeyCode.D) || Input.GetKeyDown (KeyCode.A)) {
                SetMovingState ();
                return;
            }
            forwardSpeed = Mathf.Lerp (forwardSpeed, 0, dampingSpeed * Time.fixedDeltaTime);
            if (forwardSpeed <= 0.1f) {
                SetIdleState ();
                return;
            }
            rigidBody.MovePosition (transform.position + transform.forward * forwardSpeed * Time.fixedDeltaTime);
        }
    }