104 lines
2.4 KiB
C#
104 lines
2.4 KiB
C#
using UnityEngine;
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using System.Collections;
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/// <summary>
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/// The touch-screen implementation of FingerGestures, using Input.touches
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/// </summary>
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public class TouchScreenGestures : FingerGestures
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{
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/// <summary>
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/// Maximum number of simultaneous fingers to track
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/// </summary>
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public int maxFingers = 5;
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public override int MaxFingers
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{
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get { return maxFingers; }
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}
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protected override void Start()
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{
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finger2touchMap = new int[MaxFingers];
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base.Start();
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}
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#region FingerGestures Implementation
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protected override FingerGestures.FingerPhase GetPhase( Finger finger )
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{
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if( HasValidTouch( finger ) )
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{
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UnityEngine.Touch touch = GetTouch( finger );
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switch( touch.phase )
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{
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case UnityEngine.TouchPhase.Began:
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return FingerPhase.Began;
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case UnityEngine.TouchPhase.Moved:
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return FingerPhase.Moved;
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case UnityEngine.TouchPhase.Stationary:
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return FingerPhase.Stationary;
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default:
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return FingerPhase.Ended;
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}
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}
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return FingerPhase.None;
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}
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protected override Vector2 GetPosition( Finger finger )
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{
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UnityEngine.Touch touch = GetTouch( finger );
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return touch.position;
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}
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#endregion
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#region Touch > Finger mapping
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UnityEngine.Touch nullTouch = new UnityEngine.Touch();
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int[] finger2touchMap; // finger.index -> touch index map
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void UpdateFingerTouchMap()
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{
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for( int i = 0; i < finger2touchMap.Length; ++i )
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finger2touchMap[i] = -1;
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for( int i = 0; i < Input.touchCount; ++i )
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{
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int fingerIndex = Input.touches[i].fingerId;
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if( fingerIndex < finger2touchMap.Length )
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finger2touchMap[fingerIndex] = i;
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}
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}
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bool HasValidTouch( Finger finger )
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{
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return finger2touchMap[finger.Index] != -1;
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}
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UnityEngine.Touch GetTouch( Finger finger )
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{
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int touchIndex = finger2touchMap[finger.Index];
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if( touchIndex == -1 )
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return nullTouch;
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return Input.touches[touchIndex];
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}
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#endregion
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protected override void Update()
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{
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UpdateFingerTouchMap();
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base.Update();
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}
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}
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