/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
if (Keyboard.GetState().IsKeyDown(Keys.Escape))
{
Exit();
}
if (Keyboard.GetState().IsKeyDown(Keys.Tab))
{
_gameboy.Debug();
}
if (Keyboard.GetState().IsKeyDown(Keys.F1) && !oldState.IsKeyDown(Keys.F1))
{
using (BinaryWriter bw = new BinaryWriter(File.Create("savestate.sav")))
{
_gameboy.SaveState(bw);
}
}
if (Keyboard.GetState().IsKeyDown(Keys.F2) && !oldState.IsKeyDown(Keys.F2))
{
using (BinaryReader br = new BinaryReader(File.OpenRead("savestate.sav")))
{
_gameboy.LoadState(br);
}
}
if (!_debugMode && Keyboard.GetState().IsKeyDown(Keys.F3) && !oldState.IsKeyDown(Keys.F3))
{
graphics.IsFullScreen = !graphics.IsFullScreen;
if (graphics.IsFullScreen)
{
graphics.PreferredBackBufferWidth = 1920;
graphics.PreferredBackBufferHeight = 1080;
}
else
{
graphics.PreferredBackBufferWidth = PPU.SCREEN_WIDTH * 3;
graphics.PreferredBackBufferHeight = PPU.SCREEN_HEIGHT * 3;
}
graphics.ApplyChanges();
gameScale = 2f;
while (PPU.SCREEN_WIDTH * gameScale <= graphics.PreferredBackBufferWidth && PPU.SCREEN_HEIGHT * gameScale <= graphics.PreferredBackBufferHeight)
{
gameScale++;
}
gameScale -= 1;
}
var _keyState = Keyboard.GetState();
var _padState = GamePad.GetState(0);
float deadzone = .15f;
_gameboy.SetInput(Input.Button.Up, _keyState.IsKeyDown(Keys.Up) || _padState.DPad.Up == ButtonState.Pressed || _padState.ThumbSticks.Left.Y > deadzone);
_gameboy.SetInput(Input.Button.Down, _keyState.IsKeyDown(Keys.Down) || _padState.DPad.Down == ButtonState.Pressed || _padState.ThumbSticks.Left.Y < -deadzone);
_gameboy.SetInput(Input.Button.Left, _keyState.IsKeyDown(Keys.Left) || _padState.DPad.Left == ButtonState.Pressed || _padState.ThumbSticks.Left.X < -deadzone);
_gameboy.SetInput(Input.Button.Right, _keyState.IsKeyDown(Keys.Right) || _padState.DPad.Right == ButtonState.Pressed || _padState.ThumbSticks.Left.X > deadzone);
_gameboy.SetInput(Input.Button.B, _keyState.IsKeyDown(Keys.A) || _padState.Buttons.X == ButtonState.Pressed);
_gameboy.SetInput(Input.Button.A, _keyState.IsKeyDown(Keys.S) || _padState.Buttons.A == ButtonState.Pressed);
_gameboy.SetInput(Input.Button.Start, _keyState.IsKeyDown(Keys.Space) || _padState.Buttons.Start == ButtonState.Pressed);
_gameboy.SetInput(Input.Button.Select, _keyState.IsKeyDown(Keys.LeftShift) || _padState.Buttons.Back == ButtonState.Pressed);
//_gameboy.ExecuteFrame();
if (_gameboy.GetFrameBufferCount() > 0)
{
int[] frameBuffer = _gameboy.DequeueFrameBuffer();
for (int i = 0; i < frameBuffer.Length; i += 4)
{
colors[i / 4] = new Color(frameBuffer[i], frameBuffer[i + 1], frameBuffer[i + 2], frameBuffer[i + 3]);
}
_frame.SetData <Color>(colors);
//_frame.SaveAsPng(File.Create("Pictures/pict" + picCount++ + ".png"), PPU.SCREEN_WIDTH, PPU.SCREEN_HEIGHT);
if (_debugMode)
{
// tiles w h
int[] ppuTiles = _gameboy.GetTilesBuffer(0);
for (int i = 0; i < ppuTiles.Length; i += 4)
{
tileColors[i / 4] = new Color(ppuTiles[i], ppuTiles[i + 1], ppuTiles[i + 2], ppuTiles[i + 3]);
}
_tiles.SetData <Color>(tileColors);
ppuTiles = _gameboy.GetTilesBuffer(1);
for (int i = 0; i < ppuTiles.Length; i += 4)
{
tileColors[i / 4] = new Color(ppuTiles[i], ppuTiles[i + 1], ppuTiles[i + 2], ppuTiles[i + 3]);
}
_tiles2.SetData <Color>(tileColors);
}
}
if (_keyState.IsKeyDown(Keys.R) && !oldState.IsKeyDown(Keys.R))
{
_gameboy.Reset(false, GetNextTestRom());
//_cpu.Debug();
}
if (_keyState.IsKeyDown(Keys.Tab) && !oldState.IsKeyDown(Keys.Tab))
{
//_cpu.Debug();
}
oldState = _keyState;
base.Update(gameTime);
}