public void AdvanceMachineCycle(JoypadState joypadState)
{
_joypad.SetJoypadState(joypadState);
_audioProcessingUnit.AdvanceMachineCycle();
_dmaController.AdvanceMachineCycle();
_cpuCore.AdvanceMachineCycle();
_timer.AdvanceMachineCycle();
_serialController.AdvanceMachineCycle();
_pixelProcessingUnit.AdvanceMachineCycle();
}
private JoypadState GetJoypadState()
{
JoypadState joypadState = 0;
if (KeyboardState.IsKeyDown(Key.Enter))
{
joypadState |= JoypadState.Start;
}
if (KeyboardState.IsKeyDown(Key.ShiftLeft))
{
joypadState |= JoypadState.Select;
}
if (KeyboardState.IsKeyDown(Key.A))
{
joypadState |= JoypadState.A;
}
if (KeyboardState.IsKeyDown(Key.S))
{
joypadState |= JoypadState.B;
}
if (KeyboardState.IsKeyDown(Key.Left) && KeyboardState.IsKeyUp(Key.Right))
{
joypadState |= JoypadState.Left;
}
if (KeyboardState.IsKeyDown(Key.Right) && KeyboardState.IsKeyUp(Key.Left))
{
joypadState |= JoypadState.Right;
}
if (KeyboardState.IsKeyDown(Key.Up) && KeyboardState.IsKeyUp(Key.Down))
{
joypadState |= JoypadState.Up;
}
if (KeyboardState.IsKeyDown(Key.Down) && KeyboardState.IsKeyUp(Key.Up))
{
joypadState |= JoypadState.Down;
}
return(joypadState);
}
protected override void OnUpdateFrame(FrameEventArgs e)
{
var timespan = _stopwatch.Elapsed;
if (timespan.TotalMilliseconds >= (16 + _stopwatchOvershoot) || _fastForward == true)
{
_stopwatchOvershoot = 16 - timespan.TotalMilliseconds;
if (_stopwatchOvershoot > 0)
{
_stopwatchOvershoot = 0;
}
_stopwatch.Restart();
_joypadState = GetJoypadState();
for (int i = 0; i < 17000; i++)
{
_soundPlayer.QueueAudioSample(Channels.Channel1, _gameBoy.GetAudioSample(Channels.Channel1));
_soundPlayer.QueueAudioSample(Channels.Channel2, _gameBoy.GetAudioSample(Channels.Channel2));
_soundPlayer.QueueAudioSample(Channels.Channel3, _gameBoy.GetAudioSample(Channels.Channel3));
_soundPlayer.QueueAudioSample(Channels.Channel4, _gameBoy.GetAudioSample(Channels.Channel4));
_gameBoy.AdvanceMachineCycle(_joypadState);
}
}
if (KeyboardState.IsKeyDown(Key.Escape))
{
Close();
}
if (KeyboardState.IsKeyDown(Key.Tab))
{
_fastForward = true;
}
else
{
_fastForward = false;
}
if (KeyboardState.IsKeyDown(Key.P) && LastKeyboardState.IsKeyUp(Key.P))
{
if (Size.X < 640)
{
Size = new OpenToolkit.Mathematics.Vector2i(ClientSize.X + 160, ClientSize.Y + 144);
}
}
if (KeyboardState.IsKeyDown(Key.M) && LastKeyboardState.IsKeyUp(Key.M))
{
if (Size.X > 160)
{
Size = new OpenToolkit.Mathematics.Vector2i(ClientSize.X - 160, ClientSize.Y - 144);
}
}
if (KeyboardState.IsKeyDown(Key.L) && LastKeyboardState.IsKeyUp(Key.L))
{
_gameBoy.EnableLogging();
}
base.OnUpdateFrame(e);
}
public void SetJoypadState(JoypadState joypadState)
{
_joypadState = joypadState;
}