88 lines
2.4 KiB
C#
88 lines
2.4 KiB
C#
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using UnityEngine;
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using System.Collections;
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/// <summary>
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/// Long-Press gesture: detects when the finger is held down without moving, for a specific duration
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/// </summary>
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[AddComponentMenu( "FingerGestures/Gesture Recognizers/Long Pressing" )]
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public class LongPressingGestureRecognizer : AveragedGestureRecognizer
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{
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/// <summary>
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/// Event fired when the the gesture is recognized
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/// </summary>
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public event EventDelegate<LongPressingGestureRecognizer> OnLongPressing;
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/// <summary>
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/// How long the finger must stay down without moving in order to validate the gesture
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/// </summary>
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public float Duration = 0.3f;
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/// <summary>
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/// How far the finger is allowed to move from its <see cref="AveragedGestureRecognizer.StartPosition">initial position</see> without making the gesture fail
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/// </summary>
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public float MoveTolerance = 5.0f;
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Vector2 delta = Vector2.zero;
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Vector2 lastPos = Vector2.zero;
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/// <summary>
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/// Amount of motion performed since the last update
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/// </summary>
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public Vector2 MoveDelta
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{
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get { return delta; }
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private set { delta = value; }
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}
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//protected override bool CanBegin( FingerGestures.IFingerList touches )
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//{
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// if(!base.CanBegin( touches ))
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// return false;
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// if(touches.GetAverageDistanceFromStart() < MoveTolerance)
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// return false;
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// return true;
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//}
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protected override void OnBegin( FingerGestures.IFingerList touches )
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{
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Duration = 0.3f;
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Position = touches.GetAveragePosition();
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StartPosition = Position;
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MoveDelta = Vector2.zero;
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lastPos = Position;
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}
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protected override GestureState OnActive( FingerGestures.IFingerList touches )
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{
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if(touches.Count != RequiredFingerCount)
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{
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return GestureState.Failed;
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}
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Position = touches.GetAveragePosition();
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MoveDelta = Position - lastPos;
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if(ElapsedTime >= Duration)
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{
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if(MoveDelta.sqrMagnitude > 0)
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{
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lastPos = Position;
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}
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RaiseOnLongPressing();
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}
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return GestureState.InProgress;
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}
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protected void RaiseOnLongPressing()
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{
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if(OnLongPressing != null)
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{
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OnLongPressing( this );
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}
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}
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}
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