Files
OpenRA/OpenRA.Renderer.Sdl2/MultiTapDetection.cs
2014-06-15 22:16:40 +12:00

83 lines
2.0 KiB
C#

#region Copyright & License Information
/*
* Copyright 2007-2013 The OpenRA Developers (see AUTHORS)
* This file is part of OpenRA, which is free software. It is made
* available to you under the terms of the GNU General Public License
* as published by the Free Software Foundation. For more information,
* see COPYING.
*/
#endregion
using System;
using OpenRA.Primitives;
namespace OpenRA.Renderer.Sdl2
{
public static class MultiTapDetection
{
static Cache<Keycode, TapHistory> keyHistoryCache =
new Cache<Keycode, TapHistory>(_ => new TapHistory(DateTime.Now - TimeSpan.FromSeconds(1)));
static Cache<byte, TapHistory> clickHistoryCache =
new Cache<byte, TapHistory>(_ => new TapHistory(DateTime.Now - TimeSpan.FromSeconds(1)));
public static int DetectFromMouse(byte button, int2 xy)
{
return clickHistoryCache[button].GetTapCount(xy);
}
public static int InfoFromMouse(byte button)
{
return clickHistoryCache[button].LastTapCount();
}
public static int DetectFromKeyboard(Keycode key)
{
return keyHistoryCache[key].GetTapCount(int2.Zero);
}
public static int InfoFromKeyboard(Keycode key)
{
return keyHistoryCache[key].LastTapCount();
}
}
class TapHistory
{
public Pair<DateTime, int2> FirstRelease, SecondRelease, ThirdRelease;
public TapHistory(DateTime now)
{
FirstRelease = SecondRelease = ThirdRelease = Pair.New(now, int2.Zero);
}
static bool CloseEnough(Pair<DateTime, int2> a, Pair<DateTime, int2> b)
{
return a.First - b.First < TimeSpan.FromMilliseconds(250)
&& (a.Second - b.Second).Length < 4;
}
public int GetTapCount(int2 xy)
{
FirstRelease = SecondRelease;
SecondRelease = ThirdRelease;
ThirdRelease = Pair.New(DateTime.Now, xy);
if (!CloseEnough(ThirdRelease, SecondRelease))
return 1;
if (!CloseEnough(SecondRelease, FirstRelease))
return 2;
return 3;
}
public int LastTapCount()
{
if (!CloseEnough(ThirdRelease, SecondRelease))
return 1;
if (!CloseEnough(SecondRelease, FirstRelease))
return 2;
return 3;
}
}
}