Eg 程式筆記

大家一定再思考 Unity 製作 平板或手機的時候

如何要撰寫判斷左滑,右滑..等

兩指判斷放大縮小..等

想要達到切水果，快跑遊戲必熟悉的一項

以下是小編撰寫，範例程式 :

  using UnityEngine;
  using System.Collections;
  public class gDefine {
		
	public enum Direction{
		Up,
		Down,
		Left,
		Right
	}
  }

  public class Example_Hand : MonoBehaviour {

	//紀錄手指觸碰位置
	private Vector2 m_screenPos = new Vector2 ();

	void Update () {

  #if UNITY_EDITOR || UNITY_STANDALONE
		MouseInput();   // 滑鼠偵測
  #elif UNITY_ANDROID
		MobileInput();  // 觸碰偵測
  #endif
	}

	void MouseInput()
	{
		if (Input.GetMouseButtonDown(0))
		{
			m_screenPos = new Vector2(Input.mousePosition.x, Input.mousePosition.y);
		}

		if(Input.GetMouseButtonUp(0))
		{
			Vector2 pos = new Vector2(Input.mousePosition.x, Input.mousePosition.y);

			gDefine.Direction mDirection = HandDirection(m_screenPos, pos);
			Debug.Log("mDirection: " + mDirection.ToString());
		}
	}
		
	void MobileInput ()
	{
		if (Input.touchCount <= 0)
			return;
			
		//1個手指觸碰螢幕
		if (Input.touchCount == 1) {
				
			//開始觸碰
			if (Input.touches [0].phase == TouchPhase.Began) {
				Debug.Log("Began");
				//紀錄觸碰位置
				m_screenPos = Input.touches [0].position;
					
				//手指移動
			} else if (Input.touches [0].phase == TouchPhase.Moved) {
				Debug.Log("Moved");
				//移動攝影機
				//Camera.main.transform.Translate (new Vector3 (-Input.touches [0].deltaPosition.x * Time.deltaTime, -Input.touches [0].deltaPosition.y * Time.deltaTime, 0));
			}
				
				
			//手指離開螢幕
			if (Input.touches [0].phase == TouchPhase.Ended || Input.touches [0].phase == TouchPhase.Canceled) {
				Debug.Log("Ended");
				Vector2 pos = Input.touches [0].position;

				gDefine.Direction mDirection = HandDirection(m_screenPos, pos);
					Debug.Log("mDirection: " + mDirection.ToString());
			}
				//攝影機縮放，如果1個手指以上觸碰螢幕
		} else if (Input.touchCount > 1) {
				
			//記錄兩個手指位置
			Vector2 finger1 = new Vector2 ();
			Vector2 finger2 = new Vector2 ();
				
			//記錄兩個手指移動距離
			Vector2 move1 = new Vector2 ();
			Vector2 move2 = new Vector2 ();
				
			//是否是小於2點觸碰
			for (int i=0; i<2; i++) {
				UnityEngine.Touch touch = UnityEngine.Input.touches [i];
					
				if (touch.phase == TouchPhase.Ended)
					break;
					
				if (touch.phase == TouchPhase.Moved) {
					//每次都重置
					float move = 0;
						
					//觸碰一點
					if (i == 0) {
						finger1 = touch.position;
						move1 = touch.deltaPosition;
						//另一點
					} else {
						finger2 = touch.position;
						move2 = touch.deltaPosition;
							
						//取最大X
						if (finger1.x > finger2.x) {
							move = move1.x;
						} else {
							move = move2.x;
						}
							
						//取最大Y，並與取出的X累加
						if (finger1.y > finger2.y) {
							move += move1.y;
						} else {
							move += move2.y;
						}
							
						//當兩指距離越遠，Z位置加的越多，相反之
						Camera.main.transform.Translate (0, 0, move * Time.deltaTime);
					}
				}
			}//end for
		}//end else if 
	}//end void

	gDefine.Direction HandDirection(Vector2 StartPos, Vector2 EndPos)
	{
		gDefine.Direction mDirection;

		//手指水平移動
		if (Mathf.Abs (StartPos.x - EndPos.x) > Mathf.Abs (StartPos.y - EndPos.y)) {
			if (StartPos.x > EndPos.x) {
				//手指向左滑動
				mDirection = gDefine.Direction.Left;
			} else {
				//手指向右滑動
				mDirection = gDefine.Direction.Right;
			}
		} else {
			if (m_screenPos.y > EndPos.y) {
				//手指向下滑動
				mDirection = gDefine.Direction.Down;
			} else {
				//手指向上滑動
				mDirection = gDefine.Direction.Up;
			}
		}
		return mDirection;
	}
  }

 

簡單使用方法就是掛載腳本就可以進行測試了

複製貼上 檔案名稱命 Example_Hand.cs

以下是測試結果

 

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