private void DrawLevelPatterns(LevelIndex level)
{
spritePatterns.Clear();
bgPatterns.Clear();
PatternGroupIndexTable groups = GetLevelPatterns(level);
spritePatterns.BeginWrite();
bgPatterns.BeginWrite();
for (int i = 0; i < groups.Count; i++)
{
PatternGroupOffsets offsets = rom.PatternGroupOffsets[groups[i]];
if (offsets.IsPage0)
{
spritePatterns.LoadTiles(offsets);
}
else
{
bgPatterns.LoadTiles(offsets);
}
}
spritePatterns.EndWrite();
bgPatterns.EndWrite();
ApplyPalette(level);
SpritePatternBox.Image = spritePatterns.PatternImage;
BackgroundPatternBox.Image = bgPatterns.PatternImage;
}
private void picTiles_Paint(object sender, PaintEventArgs e)
{
int firstRow = e.ClipRectangle.Top / RowHeight;
int lastRow = e.ClipRectangle.Bottom / RowHeight;
if (lastRow >= _RowCount)
{
lastRow = _RowCount - 1;
}
int RenderY = firstRow * RowHeight;
gfxLoader.LoadColors(_Palette, 0);
e.Graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
e.Graphics.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.Half;
for (int i = firstRow; i <= lastRow; i += RowsPerPage)
{
// Draw up to 16 rows
int rowCount = Math.Min(RowsPerPage, lastRow - i + 1);
int dataStart = i * bytesPerRow + _DataStart;
int dataEnd = dataStart + bytesPerRow * rowCount - 1;
if (dataEnd >= tileData.Length)
{
System.Diagnostics.Debug.Fail("Attempted to draw tiles beyond end of ROM");
}
else
{
gfxLoader.BeginWrite();
gfxLoader.LoadTiles(tileData, dataStart, 0, rowCount * TilePerRow);
gfxLoader.EndWrite();
Rectangle source = new Rectangle(0, 0, RawTileSheetSize, RawTileSize * rowCount);
Rectangle dest = new Rectangle(0, RenderY, RowWidth, RowHeight * rowCount);
e.Graphics.DrawImage(gfxLoader.PatternImage, dest, source, GraphicsUnit.Pixel);
RenderY += rowCount * RowHeight;
}
}
DrawSelection(e.Graphics);
}
private void LoadGfxSlot(PatternTable gfx, int slot, int bank)
{
int offset = bank * chrBankSize + chrRomOffset;
gfx.LoadTiles(rom.data, offset, slot * 0x40, 0x40);
}
