public uint[] GetSprite(int index)
{
OAM oam = GetOAM(index);
DrawSprite(_sprite, oam.SpriteCode, 0, 0);
return(_sprite);
}
internal void RefreshSprite(uint[] pixels, OAM oam)
{
Utils.TransferBytesToWriteableBitmap(_spriteImage, pixels);
OnPropertyChanged(() => SpriteImage);
_spriteData = oam;
OnPropertyChanged(() => SpriteData);
}
internal static void GetSpriteRowPixels(short[] pixelLookupTable,
DisplayDefinition disDef, Memory memory, OAM[] spriteOAMs,
uint[] targetPixels, uint[] pixelBuffer,
int row, bool LCDCBit2,
bool ignoreBackgroundPriority = false)
{
int scanLineSize = GetScanLineOAMs(disDef, spriteOAMs, row, LCDCBit2);
// We obtain the pixels we want from it
for (int oamIndex = scanLineSize - 1; oamIndex >= 0; --oamIndex)
{
OAM oam = scanLineOAMs[oamIndex];
bool flipX = Utils.UtilFuncs.TestBit(oam.Flags, 5) != 0;
bool flipY = Utils.UtilFuncs.TestBit(oam.Flags, 6) != 0;
byte[] tilePixels = GetTileData(disDef, memory, 0x8000, oam.SpriteCode,
LCDCBit2, flipX, flipY);
int x = oam.X - 8;
int y = row - (oam.Y - 16);
uint[] spritePallete = (Utils.UtilFuncs.TestBit(oam.Flags, 4) == 0) ?
disDef.SpritePallete0 : disDef.SpritePallete1;
GetPixelsFromTileBytes(pixelLookupTable,
ref pixelBuffer,
spritePallete,
disDef.PixelPerTileX,
tilePixels[2 * y], tilePixels[2 * y + 1]);
bool backgroundPriority = (Utils.UtilFuncs.TestBit(oam.Flags, 7) != 0);
if (ignoreBackgroundPriority)
{
backgroundPriority = false;
}
for (int i = 0; i < 8; ++i)
{
int pX = x + i;
if (pX < 0) { continue; }
if (pX >= disDef.ScreenPixelCountX) { break; }
uint color = pixelBuffer[i];
if (color == 0) { continue; } // transparent pixel
// NOTE(Cristian): If the BG priority bit is set, the sprite is hidden
// on every color except tile color 0
if (backgroundPriority)
{
if (targetPixels[pX] != disDef.TileColors[0]) { continue; }
}
targetPixels[pX] = color;
}
}
}
/// <summary>
/// Gets the OAMs for the a certain row
/// </summary>
/// <param name="spriteOAMs"></param>
/// <param name="row"></param>
/// <param name="LCDCBit2"></param>
/// <returns></returns>
internal static int GetScanLineOAMs(DisplayDefinition disDef, OAM[] spriteOAMs, int row, bool LCDCBit2)
{
int spriteSize = disDef.BytesPerTileShort / 2;
if (LCDCBit2) { spriteSize = disDef.BytesPerTileLong / 2; }
// Then we select the 10 that correspond
int scanLineSize = 0;
int maxScanLineSize = 10;
foreach (OAM oam in spriteOAMs)
{
int y = oam.Y - 16;
if ((y <= row) && (row < (y + spriteSize)))
{
scanLineOAMs[scanLineSize++] = oam;
if (scanLineSize == maxScanLineSize) { break; }
}
}
return scanLineSize;
}
internal void Reset()
{
/*** DISPLAY DEFINITION ***/
_disDef.FramePixelCountX = 256;
_disDef.FramePixelCountY = 256;
_disDef.ScreenPixelCountX = 160;
_disDef.ScreenPixelCountY = 144;
_disDef.TimingPixelCountX = 256;
_disDef.TimingPixelCountY = 154;
_disDef.FrameTileCountX = 32;
_disDef.FrameTileCountY = 32;
_disDef.ScreenTileCountX = 20;
_disDef.ScreenTileCountY = 18;
_disDef.BytesPerTileShort = 16;
_disDef.BytesPerTileLong = 32;
_disDef.PixelPerTileX = 8;
_disDef.PixelPerTileY = 8;
_disDef.BytesPerPixel = 4;
_disDef.PixelFormat = PixelFormat.Format32bppArgb;
// TODO(Cristian): Output the color to the view for custom setting
_disDef.TileColors = new uint[4]
{
0xFFFFFFFF,
0xFFBBBBBB,
0xFF666666,
0xFF000000
};
_disDef.TilePallete = new uint[4];
// TODO(Cristian): Output the color to the view for custom setting
_disDef.SpriteColors = new uint[4]
{
0xFFFFFFFF,
0xFFBBBBBB,
0xFF666666,
0xFF000000
};
_disDef.SpritePallete0 = new uint[4];
_disDef.SpritePallete1 = new uint[4];
// Tile stargets
_spriteOAMs = new OAM[_spriteCount];
for (int i = 0; i < _spriteOAMs.Length; ++i)
{
_spriteOAMs[i] = new OAM();
}
/*** DISPLAY STATUS ***/
_state.PrevTickCount = 0;
_state.CurrentLineTickCount = 0;
_state.CurrentLine = 0;
// NOTE(Cristian): This are default values when there are no sprites
// They should change on runtime
_state.OAMSearchTickCount = 83;
_state.DataTransferTickCount = 83 + 175;
_state.TotalLineTickCount = 456;
_state.Enabled = true;
// TODO(Cristian): Find out at what state the display starts!
_state.DisplayMode = DisplayModes.Mode10;
_state.TileBase = true;
_state.NoTileMap = false;
_state.TileMap = false;
_state.LCDCBits = new bool[8];
// We start the registers correctly
HandleMemoryChange(MMR.LCDC, _memory.LowLevelRead((ushort)MMR.LCDC));
HandleMemoryChange(MMR.LCDC, _memory.LowLevelRead((ushort)MMR.LCDC));
HandleMemoryChange(MMR.SCY, _memory.LowLevelRead((ushort)MMR.SCY));
HandleMemoryChange(MMR.SCX, _memory.LowLevelRead((ushort)MMR.SCX));
HandleMemoryChange(MMR.LYC, _memory.LowLevelRead((ushort)MMR.LYC));
HandleMemoryChange(MMR.DMA, _memory.LowLevelRead((ushort)MMR.DMA));
HandleMemoryChange(MMR.BGP, _memory.LowLevelRead((ushort)MMR.BGP));
HandleMemoryChange(MMR.OBP0, _memory.LowLevelRead((ushort)MMR.OBP0));
HandleMemoryChange(MMR.OBP1, _memory.LowLevelRead((ushort)MMR.OBP1));
HandleMemoryChange(MMR.WY, _memory.LowLevelRead((ushort)MMR.WY));
HandleMemoryChange(MMR.WX, _memory.LowLevelRead((ushort)MMR.WX));
/*** DRAW TARGETS ***/
// We create the target bitmaps
_debugInternalTargets = new uint[Enum.GetNames(typeof(DebugTargets)).Length][];
_debugExternalTargets = new uint[Enum.GetNames(typeof(DebugTargets)).Length][];
_updateDebugTargets = new bool[Enum.GetNames(typeof(DebugTargets)).Length];
_debugInternalTargets[(int)DebugTargets.Background] = new uint[_disDef.FramePixelCountX * _disDef.FramePixelCountY];
_debugExternalTargets[(int)DebugTargets.Background] = new uint[_disDef.FramePixelCountX * _disDef.FramePixelCountY];
_updateDebugTargets[(int)DebugTargets.Background] = false;
_debugInternalTargets[(int)DebugTargets.Tiles] = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_debugExternalTargets[(int)DebugTargets.Tiles] = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_updateDebugTargets[(int)DebugTargets.Tiles] = false;
_debugInternalTargets[(int)DebugTargets.Window] = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_debugExternalTargets[(int)DebugTargets.Window] = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_updateDebugTargets[(int)DebugTargets.Window] = false;
_debugInternalTargets[(int)DebugTargets.SpriteLayer] = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_debugExternalTargets[(int)DebugTargets.SpriteLayer] = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_updateDebugTargets[(int)DebugTargets.SpriteLayer] = false;
_debugInternalTargets[(int)DebugTargets.DisplayTiming] = new uint[_disDef.TimingPixelCountX * _disDef.TimingPixelCountY];
_debugExternalTargets[(int)DebugTargets.DisplayTiming] = new uint[_disDef.TimingPixelCountX * _disDef.TimingPixelCountY];
_updateDebugTargets[(int)DebugTargets.DisplayTiming] = false;
_screenInternalBuffer = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_screenExternalBuffer = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_sprite = new uint[8 * 16];
_tempPixelBuffer = new uint[_disDef.PixelPerTileX];
_tempFrameLineBuffer = new uint[_disDef.FramePixelCountX];
// We update the display status info
UpdateDisplayLineInfo(false);
}
internal void Reset()
{
/*** DISPLAY DEFINITION ***/
_disDef.FramePixelCountX = 256;
_disDef.FramePixelCountY = 256;
_disDef.ScreenPixelCountX = 160;
_disDef.ScreenPixelCountY = 144;
_disDef.TimingPixelCountX = 256;
_disDef.TimingPixelCountY = 154;
_disDef.FrameTileCountX = 32;
_disDef.FrameTileCountY = 32;
_disDef.ScreenTileCountX = 20;
_disDef.ScreenTileCountY = 18;
_disDef.BytesPerTileShort = 16;
_disDef.BytesPerTileLong = 32;
_disDef.PixelPerTileX = 8;
_disDef.PixelPerTileY = 8;
_disDef.BytesPerPixel = 4;
_disDef.PixelFormat = PixelFormat.Format32bppArgb;
// TODO(Cristian): Output the color to the view for custom setting
_disDef.TileColors = new uint[4]
{
0xFFFFFFFF,
0xFFBBBBBB,
0xFF666666,
0xFF000000
};
_disDef.TilePallete = new uint[4];
// TODO(Cristian): Output the color to the view for custom setting
_disDef.SpriteColors = new uint[4]
{
0xFFFFFFFF,
0xFFBBBBBB,
0xFF666666,
0xFF000000
};
_disDef.SpritePallete0 = new uint[4];
_disDef.SpritePallete1 = new uint[4];
// Tile stargets
_spriteOAMs = new OAM[_spriteCount];
for (int i = 0; i < _spriteOAMs.Length; ++i)
{
_spriteOAMs[i] = new OAM();
}
/*** DISPLAY STATUS ***/
_state.PrevTickCount = 0;
_state.CurrentLineTickCount = 0;
_state.CurrentLine = 0;
// NOTE(Cristian): This are default values when there are no sprites
// They should change on runtime
_state.OAMSearchTickCount = 83;
_state.DataTransferTickCount = 83 + 175;
_state.TotalLineTickCount = 456;
_state.Enabled = true;
// TODO(Cristian): Find out at what state the display starts!
_state.DisplayMode = DisplayModes.Mode10;
_state.TileBase = true;
_state.NoTileMap = false;
_state.TileMap = false;
_state.LCDCBits = new bool[8];
// We start the registers correctly
HandleMemoryChange(MMR.LCDC, _memory.LowLevelRead((ushort)MMR.LCDC));
HandleMemoryChange(MMR.LCDC, _memory.LowLevelRead((ushort)MMR.LCDC));
HandleMemoryChange(MMR.SCY, _memory.LowLevelRead((ushort)MMR.SCY));
HandleMemoryChange(MMR.SCX, _memory.LowLevelRead((ushort)MMR.SCX));
HandleMemoryChange(MMR.LYC, _memory.LowLevelRead((ushort)MMR.LYC));
HandleMemoryChange(MMR.DMA, _memory.LowLevelRead((ushort)MMR.DMA));
HandleMemoryChange(MMR.BGP, _memory.LowLevelRead((ushort)MMR.BGP));
HandleMemoryChange(MMR.OBP0, _memory.LowLevelRead((ushort)MMR.OBP0));
HandleMemoryChange(MMR.OBP1, _memory.LowLevelRead((ushort)MMR.OBP1));
HandleMemoryChange(MMR.WY, _memory.LowLevelRead((ushort)MMR.WY));
HandleMemoryChange(MMR.WX, _memory.LowLevelRead((ushort)MMR.WX));
/*** DRAW TARGETS ***/
// We create the target bitmaps
_debugInternalTargets = new uint[Enum.GetNames(typeof(DebugTargets)).Length][];
_debugExternalTargets = new uint[Enum.GetNames(typeof(DebugTargets)).Length][];
_updateDebugTargets = new bool[Enum.GetNames(typeof(DebugTargets)).Length];
_debugInternalTargets[(int)DebugTargets.Background] = new uint[_disDef.FramePixelCountX * _disDef.FramePixelCountY];
_debugExternalTargets[(int)DebugTargets.Background] = new uint[_disDef.FramePixelCountX * _disDef.FramePixelCountY];
_updateDebugTargets[(int)DebugTargets.Background] = false;
_debugInternalTargets[(int)DebugTargets.Tiles] = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_debugExternalTargets[(int)DebugTargets.Tiles] = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_updateDebugTargets[(int)DebugTargets.Tiles] = false;
_debugInternalTargets[(int)DebugTargets.Window] = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_debugExternalTargets[(int)DebugTargets.Window] = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_updateDebugTargets[(int)DebugTargets.Window] = false;
_debugInternalTargets[(int)DebugTargets.SpriteLayer] = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_debugExternalTargets[(int)DebugTargets.SpriteLayer] = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_updateDebugTargets[(int)DebugTargets.SpriteLayer] = false;
_debugInternalTargets[(int)DebugTargets.DisplayTiming] = new uint[_disDef.TimingPixelCountX * _disDef.TimingPixelCountY];
_debugExternalTargets[(int)DebugTargets.DisplayTiming] = new uint[_disDef.TimingPixelCountX * _disDef.TimingPixelCountY];
_updateDebugTargets[(int)DebugTargets.DisplayTiming] = false;
_screenInternalBuffer = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_screenExternalBuffer = new uint[_disDef.ScreenPixelCountX * _disDef.ScreenPixelCountY];
_sprite = new uint[8 * 16];
_tempPixelBuffer = new uint[_disDef.PixelPerTileX];
_tempFrameLineBuffer = new uint[_disDef.FramePixelCountX];
// We update the display status info
UpdateDisplayLineInfo(false);
}
GetSpriteRowPixels(short[] pixelLookupTable,
DisplayDefinition disDef, Memory memory, OAM[] spriteOAMs,
uint[] targetPixels, uint[] pixelBuffer,
int row, bool LCDCBit2,
bool ignoreBackgroundPriority = false)
{
int scanLineSize = GetScanLineOAMs(disDef, spriteOAMs, row, LCDCBit2);
// We obtain the pixels we want from it
for (int oamIndex = scanLineSize - 1; oamIndex >= 0; --oamIndex)
{
OAM oam = scanLineOAMs[oamIndex];
bool flipX = Utils.UtilFuncs.TestBit(oam.Flags, 5) != 0;
bool flipY = Utils.UtilFuncs.TestBit(oam.Flags, 6) != 0;
byte[] tilePixels = GetTileData(disDef, memory, 0x8000, oam.SpriteCode,
LCDCBit2, flipX, flipY);
int x = oam.X - 8;
int y = row - (oam.Y - 16);
uint[] spritePallete = (Utils.UtilFuncs.TestBit(oam.Flags, 4) == 0) ?
disDef.SpritePallete0 : disDef.SpritePallete1;
GetPixelsFromTileBytes(pixelLookupTable,
ref pixelBuffer,
spritePallete,
disDef.PixelPerTileX,
tilePixels[2 * y], tilePixels[2 * y + 1]);
bool backgroundPriority = (Utils.UtilFuncs.TestBit(oam.Flags, 7) != 0);
if (ignoreBackgroundPriority)
{
backgroundPriority = false;
}
for (int i = 0; i < 8; ++i)
{
int pX = x + i;
if (pX < 0)
{
continue;
}
if (pX >= disDef.ScreenPixelCountX)
{
break;
}
uint color = pixelBuffer[i];
if (color == 0)
{
continue;
} // transparent pixel
// NOTE(Cristian): If the BG priority bit is set, the sprite is hidden
// on every color except tile color 0
if (backgroundPriority)
{
if (targetPixels[pX] != disDef.TileColors[0])
{
continue;
}
}
targetPixels[pX] = color;
}
}
}