public void TestRenderScreenWithSpriteFlipped()
{
var romData = new ROMData();
romData.Data[ROMs.PAC_MAN_COLOR.FileName] = VideoHardwareTestData.COLOR_ROM;
romData.Data[ROMs.PAC_MAN_PALETTE.FileName] = VideoHardwareTestData.PALETTE_ROM;
romData.Data[ROMs.PAC_MAN_TILE.FileName] = VideoHardwareTestData.TILE_ROM;
romData.Data[ROMs.PAC_MAN_SPRITE.FileName] = VideoHardwareTestData.SPRITE_ROM;
var video = new VideoHardware(romData);
video.InitializeColors();
video.InitializePalettes();
video.InitializeTiles();
video.InitializeSprites();
// Arrange: Load a VRAM dump which contains tiles positions and palettes for each tile.
var rawMemory = new byte[0xFFFF];
var vram = File.ReadAllBytes($"../../../TestData/maze-1.vram");
Array.Copy(vram, 0, rawMemory, 0x4000, 0x0800);
var memory = new SimpleMemory(rawMemory);
// Arrange: Setup the sprites to show.
// Pac-Man facing left sprite (46), flip X/Y (0x02).
var flags = (byte)((46 << 2) | (0x02));
memory.Write(0x4FF0, flags);
memory.Write(0x4FF1, 9); // Palette.
// Act: Render the image based on the tiles and palettes in memory.
var spriteCoordinates = new byte[16]
{
220, // x
252, // y
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
var image = video.Render(memory, spriteCoordinates, true);
// Assert: the rendered image should be the same as the reference image.
byte[] actualBytes = null;
using (var steam = new MemoryStream())
{
image.Save(steam, new BmpEncoder());
actualBytes = steam.ToArray();
}
var expectedBytes = File.ReadAllBytes($"../../../ReferenceData/render-maze-1-with-sprites-flipped.bmp");
Assert.Equal(expectedBytes, actualBytes);
}
public void TestRenderScreen(string vramFile, string expectedBitmapFile, bool flipScreen)
{
var romData = new ROMData();
romData.Data[ROMs.PAC_MAN_COLOR.FileName] = VideoHardwareTestData.COLOR_ROM;
romData.Data[ROMs.PAC_MAN_PALETTE.FileName] = VideoHardwareTestData.PALETTE_ROM;
romData.Data[ROMs.PAC_MAN_TILE.FileName] = VideoHardwareTestData.TILE_ROM;
romData.Data[ROMs.PAC_MAN_SPRITE.FileName] = VideoHardwareTestData.SPRITE_ROM;
var video = new VideoHardware(romData);
video.InitializeColors();
video.InitializePalettes();
video.InitializeTiles();
video.InitializeSprites();
// Arrange: Load a VRAM dump which contains tiles positions and palettes for each tile.
var rawMemory = new byte[0xFFFF];
var vram = File.ReadAllBytes($"../../../TestData/{vramFile}");
Array.Copy(vram, 0, rawMemory, 0x4000, 0x0800);
var memory = new SimpleMemory(rawMemory);
// Act: Render the image based on the tiles and palettes in memory.
var spriteCoordinates = new byte[16];
var image = video.Render(memory, spriteCoordinates, flipScreen);
// Assert: the rendered image should be the same as the reference image.
byte[] actualBytes = null;
using (var steam = new MemoryStream())
{
image.Save(steam, new BmpEncoder());
actualBytes = steam.ToArray();
}
var expectedBytes = File.ReadAllBytes($"../../../ReferenceData/{expectedBitmapFile}");
Assert.Equal(expectedBytes, actualBytes);
}
public void TestRenderSpriteRendersAllSpritesWithTransparency()
{
var romData = new ROMData();
romData.Data[ROMs.PAC_MAN_COLOR.FileName] = VideoHardwareTestData.COLOR_ROM;
romData.Data[ROMs.PAC_MAN_PALETTE.FileName] = VideoHardwareTestData.PALETTE_ROM;
romData.Data[ROMs.PAC_MAN_TILE.FileName] = null;
romData.Data[ROMs.PAC_MAN_SPRITE.FileName] = null;
var video = new VideoHardware(romData);
video.InitializeColors();
video.InitializePalettes();
var spriteRenderer = new SpriteRenderer(VideoHardwareTestData.SPRITE_ROM, video._palettes);
// There are 64 sprites, so we can render a grid of 8x8 sprites.
// Each sprite is 16x16 pixels.
var width = 8 * 16;
var height = 8 * 16;
// Holds the (x, y) coordinates of the origin (top/left) of the location
// to render the next sprite.
var spriteOriginX = 0;
var spriteOriginY = 0;
// The image we'll be rendering all the sprites to.
var image = new Image <Rgba32>(width, height, new Rgba32()
{
R = 255, G = 0, B = 255, A = 255
});
// Render each of the 64 sprites.
for (var spriteIndex = 0; spriteIndex < 64; spriteIndex++)
{
// Render the sprite with the given color palette.
var sprite = spriteRenderer.RenderSprite(spriteIndex, 5);
// Copy the rendered sprite over into the full image.
for (var y = 0; y < 16; y++)
{
for (var x = 0; x < 16; x++)
{
var pixel = sprite[x, y];
var isTransparent = pixel.A == 0;
if (!isTransparent)
{
image[spriteOriginX + x, spriteOriginY + y] = sprite[x, y];
}
}
}
if ((spriteIndex + 1) % 8 == 0)
{
// Row is finished, wrap back around.
spriteOriginX = 0;
spriteOriginY += 16;
}
else
{
// Next column.
spriteOriginX += 16;
}
}
// Assert: the rendered image should be the same as the reference image.
byte[] actualBytes = null;
using (var steam = new MemoryStream())
{
image.Save(steam, new BmpEncoder());
actualBytes = steam.ToArray();
}
var expectedBytes = File.ReadAllBytes("../../../ReferenceData/render-all-sprites-with-transparency.bmp");
Assert.Equal(expectedBytes, actualBytes);
}
public void TestRenderSpriteRendersAllSpritesWithRotations()
{
var romData = new ROMData();
romData.Data[ROMs.PAC_MAN_COLOR.FileName] = VideoHardwareTestData.COLOR_ROM;
romData.Data[ROMs.PAC_MAN_PALETTE.FileName] = VideoHardwareTestData.PALETTE_ROM;
romData.Data[ROMs.PAC_MAN_TILE.FileName] = null;
romData.Data[ROMs.PAC_MAN_SPRITE.FileName] = null;
var video = new VideoHardware(romData);
video.InitializeColors();
video.InitializePalettes();
var spriteRenderer = new SpriteRenderer(VideoHardwareTestData.SPRITE_ROM, video._palettes);
// There are 64 sprites, so we can render a grid of 8x8 sprites.
// Each sprite is 16x16 pixels.
var width = 8 * 16;
var height = 8 * 16;
// Holds the (x, y) coordinates of the origin (top/left) of the location
// to render the next sprite.
var spriteOriginX = 0;
var spriteOriginY = 0;
// The image we'll be rendering all the sprites to.
var image = new Image <Rgba32>(width, height, new Rgba32()
{
R = 0, G = 51, B = 102, A = 255
});
// Alternate between not flipping, flipping only X and only Y, and both.
var flipIndex = 0;
var flipValues = new List <Tuple <bool, bool> >()
{
new Tuple <bool, bool>(false, false),
new Tuple <bool, bool>(true, false),
new Tuple <bool, bool>(false, true),
new Tuple <bool, bool>(true, true),
};
// Render each of the 64 sprites.
for (var spriteIndex = 0; spriteIndex < 64; spriteIndex++)
{
// Determine how we'll flip this sprite.
var flip = flipValues[flipIndex];
var flipX = flip.Item1;
var flipY = flip.Item2;
// Render the sprite with the given color palette.
var sprite = spriteRenderer.RenderSprite(spriteIndex, 1, flipX, flipY);
// Increment the value so we flip differently on the next sprite.
flipIndex++;
if (flipIndex == 4)
{
flipIndex = 0;
}
// Copy the rendered sprite over into the full image.
for (var y = 0; y < 16; y++)
{
for (var x = 0; x < 16; x++)
{
var pixel = sprite[x, y];
var isTransparent = pixel.A == 0;
if (!isTransparent)
{
image[spriteOriginX + x, spriteOriginY + y] = sprite[x, y];
}
}
}
if ((spriteIndex + 1) % 8 == 0)
{
// Row is finished, wrap back around.
spriteOriginX = 0;
spriteOriginY += 16;
}
else
{
// Next column.
spriteOriginX += 16;
}
}
// Assert: the rendered image should be the same as the reference image.
byte[] actualBytes = null;
using (var steam = new MemoryStream())
{
image.Save(steam, new BmpEncoder());
actualBytes = steam.ToArray();
}
var expectedBytes = File.ReadAllBytes("../../../ReferenceData/render-all-sprites-with-rotations.bmp");
Assert.Equal(expectedBytes, actualBytes);
}
public void TestRenderTileRendersAllTiles(int paletteIndex, string fileToCompare)
{
var romData = new ROMData();
romData.Data[ROMs.PAC_MAN_COLOR.FileName] = VideoHardwareTestData.COLOR_ROM;
romData.Data[ROMs.PAC_MAN_PALETTE.FileName] = VideoHardwareTestData.PALETTE_ROM;
romData.Data[ROMs.PAC_MAN_TILE.FileName] = null;
romData.Data[ROMs.PAC_MAN_SPRITE.FileName] = null;
var video = new VideoHardware(romData);
video.InitializeColors();
video.InitializePalettes();
var tileRenderer = new TileRenderer(VideoHardwareTestData.TILE_ROM, video._palettes);
// There are 256 tiles, so we can render a grid of 16x16 tiles.
// Each tile is 8x8 pixels.
var width = 16 * 8;
var height = 16 * 8;
// Holds the (x, y) coordinates of the origin (top/left) of the location
// to render the next tile.
var tileOriginX = 0;
var tileOriginY = 0;
// The image we'll be rendering all the tiles to.
var image = new Image <Rgba32>(width, height);
// Render each of the 256 tiles.
for (var tileIndex = 0; tileIndex < 256; tileIndex++)
{
// Render the tile with the given color palette.
var tile = tileRenderer.RenderTile(tileIndex, paletteIndex);
// Copy the rendered tile over into the full image.
for (var y = 0; y < 8; y++)
{
for (var x = 0; x < 8; x++)
{
image[tileOriginX + x, tileOriginY + y] = tile[x, y];
}
}
if ((tileIndex + 1) % 16 == 0)
{
// Row is finished, wrap back around.
tileOriginX = 0;
tileOriginY += 8;
}
else
{
// Next column.
tileOriginX += 8;
}
}
// Assert: the rendered image should be the same as the reference image.
byte[] actualBytes = null;
using (var steam = new MemoryStream())
{
image.Save(steam, new BmpEncoder());
actualBytes = steam.ToArray();
}
var expectedBytes = File.ReadAllBytes($"../../../ReferenceData/{fileToCompare}");
Assert.Equal(expectedBytes, actualBytes);
}
public void TestInitializePalettesParsesPaletteRomAndBuildsTableCorrectly()
{
var romData = new ROMData();
romData.Data[ROMs.PAC_MAN_COLOR.FileName] = VideoHardwareTestData.COLOR_ROM;
romData.Data[ROMs.PAC_MAN_PALETTE.FileName] = VideoHardwareTestData.PALETTE_ROM;
romData.Data[ROMs.PAC_MAN_TILE.FileName] = null;
romData.Data[ROMs.PAC_MAN_SPRITE.FileName] = null;
var video = new VideoHardware(romData);
video.InitializeColors();
video.InitializePalettes();
// Expected palette colors values as listed in Chris Lomont's Pac-Man Emulation
// Guide v0.1, page 6, figure 3.
var expectedPalettes = new Color[][]
{
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.FromArgb(222, 222, 255), Color.FromArgb(33, 33, 255), Color.Red, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.FromArgb(222, 222, 255), Color.FromArgb(33, 33, 255), Color.FromArgb(255, 184, 255), },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.FromArgb(222, 222, 255), Color.FromArgb(33, 33, 255), Color.Aqua, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.FromArgb(222, 222, 255), Color.FromArgb(33, 33, 255), Color.FromArgb(255, 184, 81), },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.FromArgb(33, 33, 255), Color.Red, Color.Yellow, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.FromArgb(222, 222, 255), Color.Black, Color.FromArgb(255, 184, 174), },
new Color[] { Color.Black, Color.Red, Color.Lime, Color.FromArgb(222, 222, 255), },
new Color[] { Color.Black, Color.FromArgb(255, 184, 174), Color.Black, Color.FromArgb(33, 33, 255), },
new Color[] { Color.Black, Color.Lime, Color.FromArgb(33, 33, 255), Color.FromArgb(255, 184, 174), },
new Color[] { Color.Black, Color.Lime, Color.FromArgb(222, 222, 255), Color.Red, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Red, Color.FromArgb(222, 151, 81), Color.FromArgb(222, 222, 255), },
new Color[] { Color.Black, Color.FromArgb(255, 184, 81), Color.Lime, Color.FromArgb(222, 151, 81), },
new Color[] { Color.Black, Color.Yellow, Color.FromArgb(71, 184, 255), Color.FromArgb(222, 222, 255), },
new Color[] { Color.Black, Color.FromArgb(71, 184, 174), Color.Lime, Color.FromArgb(222, 222, 255), },
new Color[] { Color.Black, Color.Aqua, Color.FromArgb(255, 184, 255), Color.Yellow, },
new Color[] { Color.Black, Color.FromArgb(222, 222, 255), Color.FromArgb(33, 33, 255), Color.Black, },
new Color[] { Color.Black, Color.FromArgb(255, 184, 174), Color.Black, Color.FromArgb(33, 33, 255), },
new Color[] { Color.Black, Color.FromArgb(255, 184, 174), Color.Black, Color.FromArgb(33, 33, 255), },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.FromArgb(222, 222, 255), Color.FromArgb(255, 184, 174), Color.Red },
new Color[] { Color.Black, Color.FromArgb(222, 222, 255), Color.FromArgb(33, 33, 255), Color.FromArgb(255, 184, 174) },
new Color[] { Color.Black, Color.FromArgb(255, 184, 174), Color.Black, Color.FromArgb(222, 222, 255) },
// The last 32 palettes aren't used; they're all just black.
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
new Color[] { Color.Black, Color.Black, Color.Black, Color.Black, },
};
Assert.Equal(64, video._palettes.Length);
Assert.Equal(64, expectedPalettes.Length);
for (var i = 0; i < expectedPalettes.Length; i++)
{
var actualPalette = video._palettes[i];
var expectedPalette = expectedPalettes[i];
Assert.True(actualPalette.Length == 4, $"The palette at index {i} should have exactly 4 color entries, but found {actualPalette.Length}");
for (var j = 0; j < 4; j++)
{
var actualColor = actualPalette[j];
var expectedColor = expectedPalette[j];
Assert.True(expectedColor.R == actualColor.R, $"The Red value for color at index {j} for the palette at index {i} was expected to be {expectedColor.R} but was actually {actualColor.R}");
Assert.True(expectedColor.G == actualColor.G, $"The Green value for color at index {j} for the palette at index {i} was expected to be {expectedColor.G} but was actually {actualColor.G}");
Assert.True(expectedColor.B == actualColor.B, $"The Blue value for color at index {j} for the palette at index {i} was expected to be {expectedColor.B} but was actually {actualColor.B}");
}
}
}
public void TestInitializeColorsParsesRomColorsCorrectly()
{
var romData = new ROMData();
romData.Data[ROMs.PAC_MAN_COLOR.FileName] = VideoHardwareTestData.COLOR_ROM;
romData.Data[ROMs.PAC_MAN_PALETTE.FileName] = null;
romData.Data[ROMs.PAC_MAN_TILE.FileName] = null;
romData.Data[ROMs.PAC_MAN_SPRITE.FileName] = null;
var video = new VideoHardware(romData);
video.InitializeColors();
// Expected RGB color values as listed in Chris Lomont's Pac-Man Emulation
// Guide v0.1, page 5, table 3.
var expectedColors = new Color[]
{
Color.FromArgb(0, 0, 0),
Color.FromArgb(255, 0, 0),
Color.FromArgb(222, 151, 81),
Color.FromArgb(255, 184, 255),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 255, 255),
Color.FromArgb(71, 184, 255),
Color.FromArgb(255, 184, 81),
Color.FromArgb(0, 0, 0),
Color.FromArgb(255, 255, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(33, 33, 255),
Color.FromArgb(0, 255, 0),
Color.FromArgb(71, 184, 174),
Color.FromArgb(255, 184, 174),
Color.FromArgb(222, 222, 255),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
Color.FromArgb(0, 0, 0),
};
Assert.Equal(32, video._colors.Length);
for (var i = 0; i < 32; i++)
{
Assert.True(expectedColors[i].R == video._colors[i].R, $"The Red value for color #{i} was expected to be {expectedColors[i].R} but was actually {video._colors[i].R}");
Assert.True(expectedColors[i].G == video._colors[i].G, $"The Green value for color #{i} was expected to be {expectedColors[i].G} but was actually {video._colors[i].G}");
Assert.True(expectedColors[i].B == video._colors[i].B, $"The Blue value for color #{i} was expected to be {expectedColors[i].B} but was actually {video._colors[i].B}");
}
}