頭戴裝置FPS角色控制邏輯。

FirstPersonCamera

using UnityEngine;
using System.Collections;

public class FirstPersonCamera : MonoBehaviour {
	public Transform m_Player;
	public Transform m_Target;
	public float direction;

	// Update is called once per frame
	void Update () {
		FollowTarget ();
		CalAngle();
	}

	void FollowTarget(){
		Vector3 position = m_Target.position;
		transform.position = position;
	}	

	void CalAngle(){
		Vector3 rootDirection = this.transform.forward;
		rootDirection.y = 0;
		Vector3 moveDirection = m_Player.transform.forward;
		moveDirection.y = 0;
		Vector3 axis = Vector3.Cross(rootDirection, moveDirection);
		direction	 = Vector3.Angle(rootDirection, moveDirection) / (axis.y > 0 ? -1 : 1);
	}
}

KeyboardEventListener

using UnityEngine;
using System.Collections;

public class KeyboardEventListener : MonoBehaviour {
	public delegate void KeyboardHandler(int dir);  
	public event KeyboardHandler onHorizontalKey;
	public event KeyboardHandler onVerticalKey;

	private KeyCode m_LeftArrowKey = KeyCode.LeftArrow;
	private KeyCode m_RightArrowKey = KeyCode.RightArrow;
	private KeyCode m_UpArrowKey = KeyCode.UpArrow;
	private KeyCode m_DownArrowKey = KeyCode.DownArrow;

	static public KeyboardEventListener Get (GameObject go){
		KeyboardEventListener listener = go.GetComponent<KeyboardEventListener>();
		if (listener == null) listener = go.AddComponent<KeyboardEventListener>();
		return listener;
	}

	void Update () {
		// Press Right
		if (Input.GetKeyDown (m_RightArrowKey)){
			OnHorizontalMove(1);
		}
		if (Input.GetKeyUp (m_RightArrowKey)){
			if (Input.GetKey (m_LeftArrowKey)){
				OnHorizontalMove(-1);
			}else{
				OnHorizontalMove(0);
			}
		}
		// PressLeft
		if (Input.GetKeyDown (m_LeftArrowKey)){
			if (Input.GetKey (m_RightArrowKey)){
				OnHorizontalMove(1);
			}else{
				OnHorizontalMove(-1);
			}
		}
		if (Input.GetKeyUp (m_LeftArrowKey)){
			if (Input.GetKey (m_RightArrowKey)){
				OnHorizontalMove(1);
			}else{
				OnHorizontalMove(0);
			}
		}
		// Press Up
		if (Input.GetKeyDown (m_UpArrowKey)){
			OnVerticalMove(1);
		}
		if (Input.GetKeyUp (m_UpArrowKey)){
			if (Input.GetKey (m_DownArrowKey)){
				OnVerticalMove(-1);
			}else{
				OnVerticalMove(0);
			}
		}		
		// PressDown
		if (Input.GetKeyDown (m_DownArrowKey)){
			if (Input.GetKey (m_UpArrowKey)){
				OnVerticalMove(1);
			}else{
				OnVerticalMove(-1);
			}
		}
		if (Input.GetKeyUp (m_DownArrowKey)){
			if (Input.GetKey (m_UpArrowKey)){
				OnVerticalMove(1);
			}else{
				OnVerticalMove(0);
			}
		}

	}
	void OnHorizontalMove(int dir)
	{
		if (onHorizontalKey != null){
			onHorizontalKey (dir);  
		}
	}
	void OnVerticalMove(int dir)
	{
		if (onVerticalKey != null){
			onVerticalKey (dir);  
		}
	}

}

PlayerInput

using UnityEngine;
using System.Collections;

public class PlayerInput : MonoBehaviour {
	public enum GameInputType { Keyboard, Gamepad};
	public GameInputType m_InputType;

	public delegate void InputHandler(float dir);  
	public event InputHandler onHorizontalInput;
	public event InputHandler onVerticalInput;
	
	void Awake(){
		switch (m_InputType){
		case GameInputType.Keyboard:
			ListenerKeyboard();
			break;
		case GameInputType.Gamepad:
			break;
		default:
			ListenerKeyboard();
			break;
		}

	}

	// 監聽鍵盤事件，分為水平與垂直
	void ListenerKeyboard(){
		KeyboardEventListener.Get(gameObject).onHorizontalKey += OnHorizontalKey;
		KeyboardEventListener.Get(gameObject).onVerticalKey += OnVerticalKey;
	}

	void OnHorizontalKey(int theDir){
		if (onHorizontalInput != null){
			onHorizontalInput((float)theDir);
		}
	}
	void OnVerticalKey(int theDir){
		if (onVerticalInput != null){
			onVerticalInput((float)theDir);
		}
	}

	static public PlayerInput Get (GameObject go){
		PlayerInput PlayerInput = go.GetComponent<PlayerInput>();
		if (PlayerInput == null) PlayerInput = go.AddComponent<PlayerInput>();
		return PlayerInput;
	}
}

PlayerMovement3D

using UnityEngine;
using System.Collections;

public class PlayerMovement3D : MonoBehaviour {
	private Animator m_Animator;
	private Vector2 moveDir;
	private bool isRush;
	public Transform viewTarget;
	public FirstPersonCamera m_FPSCamera;
	private AnimatorStateInfo m_AnimatorState;
	// Use this for initialization
	void Awake () {
		InitGetCompoment();
		ListenerInput();
	}

	void InitGetCompoment(){
		m_Animator = GetComponent<Animator>();
	}
	
	// Update is called once per frame
	void ListenerInput () {
		PlayerInput.Get(gameObject).onHorizontalInput += OnGetHorizontalMovementInput;
		PlayerInput.Get(gameObject).onVerticalInput += OnGetVerticalMovementInput;
		PlayerInput.Get(gameObject).onHorizontalInput += OnSetAnimatorSpeed;
		PlayerInput.Get(gameObject).onVerticalInput += OnSetAnimatorSpeed;
	}
	void OnGetHorizontalMovementInput(float dir){
		m_Animator.SetFloat("Horizontal", dir);
		moveDir.x = dir;
	}
	void OnGetVerticalMovementInput(float dir){
		m_Animator.SetFloat("Vertical", dir);
		moveDir.y = dir;
	}
	void OnSetAnimatorSpeed(float dir){
		// GetMoveSpeedVector
		float moveSpeed = Vector2.SqrMagnitude(moveDir.normalized);
		// RushSpeed
		if (isRush){
			moveSpeed *= 2;
		}
		m_Animator.SetFloat( "Speed", moveSpeed);
	}

	void OnAnimatorIK(int layerIndex)
	{
		m_AnimatorState = m_Animator.GetCurrentAnimatorStateInfo(0);
		bool inMove = m_AnimatorState.IsTag("LocoMotion");
		if (viewTarget){
			m_Animator.SetLookAtPosition(viewTarget.position);        
			m_Animator.SetLookAtWeight(1.0f);
		}
		// Set FaceDir to Fix Turn
		if (m_FPSCamera){
			m_Animator.SetFloat("FaceDir", m_FPSCamera.direction);
		}
		// WhenMove Rotate Character
		if (inMove){
			transform.eulerAngles += new Vector3(0,m_FPSCamera.direction*Time.deltaTime*10,0) ;
		}
	}
}