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InputTracker.cs
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InputTracker.cs
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using System.Collections.Generic;
using System.Numerics;
using Veldrid;
namespace Viking
{
public static class InputTracker
{
private static HashSet<Key> _currentlyPressedKeys = new HashSet<Key>();
private static HashSet<Key> _newKeysThisFrame = new HashSet<Key>();
private static HashSet<MouseButton> _currentlyPressedMouseButtons = new HashSet<MouseButton>();
private static HashSet<MouseButton> _newMouseButtonsThisFrame = new HashSet<MouseButton>();
public static Vector2 MousePosition;
public static InputSnapshot FrameSnapshot { get; private set; }
public static bool GetKey(Key key)
{
return _currentlyPressedKeys.Contains(key);
}
public static bool GetKeyDown(Key key)
{
return _newKeysThisFrame.Contains(key);
}
public static bool GetMouseButton(MouseButton button)
{
return _currentlyPressedMouseButtons.Contains(button);
}
public static bool GetMouseButtonDown(MouseButton button)
{
return _newMouseButtonsThisFrame.Contains(button);
}
public static void UpdateFrameInput(InputSnapshot snapshot)
{
FrameSnapshot = snapshot;
_newKeysThisFrame.Clear();
_newMouseButtonsThisFrame.Clear();
MousePosition = snapshot.MousePosition;
for (int i = 0; i < snapshot.KeyEvents.Count; i++)
{
KeyEvent ke = snapshot.KeyEvents[i];
if (ke.Down)
{
KeyDown(ke.Key);
}
else
{
KeyUp(ke.Key);
}
}
for (int i = 0; i < snapshot.MouseEvents.Count; i++)
{
MouseEvent me = snapshot.MouseEvents[i];
if (me.Down)
{
MouseDown(me.MouseButton);
}
else
{
MouseUp(me.MouseButton);
}
}
}
private static void MouseUp(MouseButton mouseButton)
{
_currentlyPressedMouseButtons.Remove(mouseButton);
_newMouseButtonsThisFrame.Remove(mouseButton);
}
private static void MouseDown(MouseButton mouseButton)
{
if (_currentlyPressedMouseButtons.Add(mouseButton))
{
_newMouseButtonsThisFrame.Add(mouseButton);
}
}
private static void KeyUp(Key key)
{
_currentlyPressedKeys.Remove(key);
_newKeysThisFrame.Remove(key);
}
private static void KeyDown(Key key)
{
if (_currentlyPressedKeys.Add(key))
{
_newKeysThisFrame.Add(key);
}
}
}
}