/// <summary>
/// Allows the game component to update itself.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
public override void Update(GameTime gameTime)
{
List <Keys> keyboardState = Keyboard.GetState().GetPressedKeys().ToList <Keys>();
foreach (Keys key in keyboardState)
{
//We can assume the key is pressed while looping through this list.
KeyTimer keyTimer = pressedKeys.Find(x => x.Key == key);
if (keyTimer != null)
{
//Key is still pressed, update its timer.
keyTimer.Update(gameTime.ElapsedGameTime);
}
else
{
//Key is newly pressed, so add it to the list.
pressedKeys.Add(new KeyTimer(key));
}
}
//Remove all keys that are no longer pressed.
pressedKeys.RemoveAll(a => !keyboardState.Exists(x => x == a.Key));
base.Update(gameTime);
}
/// <summary>
/// Checks if the key was just pressed, or has been pressed in a previous cycle.
/// </summary>
/// <param name="key">The key that needs to be checked.</param>
/// <returns></returns>
public bool IsNewKeyPress(Keys key, bool isRepeatAble)
{
KeyTimer pressedKey = pressedKeys.Find(x => x.Key == key);
if (pressedKey == null)
{
//Key is not pressed at all
return(false);
}
else
{
//Key is pressed, check if it should register as a new press.
if ((!isRepeatAble && pressedKey.TimePressed == TimeSpan.Zero)
||
(isRepeatAble && pressedKey.TimePressed >= Settings.RepeatRate || pressedKey.TimePressed == TimeSpan.Zero))
{
//A new press has been detected, reset the timer for the key.
pressedKey.ResetTimer();
return(true);
}
else
{
//The key was pressed, but it does not register as a new press.
return(false);
}
}
}