/// <summary>
/// コンストラクタ
/// </summary>
/// <param name="rom"></param>
public Nes(byte[] rom)
{
this.Cartridge = NesCartridge.Load(rom);
this.Controller = new NesGameController();
this.Ppu = new Ppu.NesPpu(this.Cartridge.GetCopyChrRom1(), this.Cartridge.GetCopyChrRom2(), this.Cartridge.IsHMirror, this.Cartridge.IsVMirror, x => this.Image = x);
this.MemoryMap = new Cpu.NesCpuMemoryMap(this.Cartridge.GetCopyPgRom1(), this.Cartridge.GetCopyPgRom2(), this.Ppu,this.Controller);
this.Cpu = new Cpu.NesCpu(this.MemoryMap, this.Ppu);
}
/// <summary>
/// 指定ラインの画像情報を作成
/// </summary>
/// <param name="yLine"></param>
internal void CreateLine(int yLine, NesPpu ppu)
{
if(yLine >= NesPpuScreenSize.MaxHeight)
return;
int? disp1PointY = null;
int? disp2PointY = null;
if (yLine + ppu.Scroll.VScroll >= NesPpuScreenSize.MaxHeight)
{
if (ppu.VMirror)
disp1PointY = disp2PointY = (yLine + ppu.Scroll.VScroll) - NesPpuScreenSize.MaxHeight;
else
disp2PointY = (yLine + ppu.Scroll.VScroll) - NesPpuScreenSize.MaxHeight;
}
else if (ppu.Scroll.VScroll > 0)
{
if (ppu.VMirror)
disp1PointY = disp2PointY = yLine + ppu.Scroll.VScroll;
else
disp1PointY = yLine + ppu.Scroll.VScroll;
}
else
{
if (ppu.VMirror)
disp1PointY = disp2PointY = yLine;
else
disp1PointY = yLine;
}
Func<NesPpu, int, NameTableType, byte[]> createBgFunc = (p, y, t) =>
{
var namePoint = new NameTablePoint(0, y / Pattern.MaxHeight);
var nameIndex = NameTablePoint.ConvertIndex(namePoint);
var patternTable = p.PatternTables[p.ControlRegister1.BgPatternTableAdress];
return p.NameAttributePairTables[t].Item1
.Skip(nameIndex)
.Take(NameTable.MaxWidth)
.Select((x, i) =>
{
var pointTuple = NameTablePoint.ConvertPoint(i + nameIndex, NameTable.MaxWidth);
var point = new NameTablePoint(pointTuple.Item1, pointTuple.Item2);
var high2Bit = p.NameAttributePairTables[t].Item2.GetAttributeHigh2Bit(point);
return new { Data = x, HighBitData = high2Bit };
})
.Select(x => patternTable[x.Data].Select(xx => (byte)((x.HighBitData << 2) | xx)).ToArray())
.Buffer(32)
.SelectMany(x =>
{
var data = x;
byte[] buf = new byte[(Pattern.MaxWidth * Pattern.MaxHeight) * NameTable.MaxWidth];
for (int line = 0; line < 8; line++)
{
for (int i = 0; i < 32; i++)
{
for (int j = 0; j < 8; j++)
{
var index = i * 8 + j + (line * 256);
buf[index] = data[i][j + (line * 8)];
}
}
}
return buf;
})
.ToArray();
};
Func<int, byte[], byte[]> getLineFunc = (y, t) =>
{
var index = 0 + (y % Pattern.MaxHeight) * NesPpuScreenSize.MaxWidth;
return t.Skip(index).Take(NesPpuScreenSize.MaxWidth).ToArray();
};
// 画面1
if (disp1PointY != null)
{
if (!this.cacheDictionary.ContainsKey(Tuple.Create(NameTableType.Table0, disp1PointY.Value / Pattern.MaxHeight)))
{
var lineImage = createBgFunc(ppu, disp1PointY.Value, NameTableType.Table0);
this.cacheDictionary[Tuple.Create(NameTableType.Table0, disp1PointY.Value / Pattern.MaxHeight)] = lineImage;
}
}
// 画面2
if (disp2PointY != null)
{
if (!this.cacheDictionary.ContainsKey(Tuple.Create(NameTableType.Table1, disp2PointY.Value / Pattern.MaxHeight)))
{
var lineImage = createBgFunc(ppu, disp2PointY.Value, NameTableType.Table1);
this.cacheDictionary[Tuple.Create(NameTableType.Table1, disp2PointY.Value / Pattern.MaxHeight)] = lineImage;
}
}
// 横2画面
if (disp1PointY != null && disp2PointY != null)
{
var disp1Image = this.cacheDictionary[Tuple.Create(NameTableType.Table0, disp1PointY.Value / Pattern.MaxHeight)];
var disp2Image = this.cacheDictionary[Tuple.Create(NameTableType.Table1, disp2PointY.Value / Pattern.MaxHeight)];
if (ppu.Scroll.HScroll == 0)
{
this.lineDictionary[yLine] = getLineFunc(disp1PointY.Value, disp1Image);
}
else if (ppu.Scroll.HScroll >= NesPpuScreenSize.MaxWidth)
{
this.lineDictionary[yLine] = getLineFunc(disp2PointY.Value, disp2Image);
}
else
{
this.lineDictionary[yLine] = getLineFunc(disp1PointY.Value, disp1Image)
.Skip(ppu.Scroll.HScroll)
.Concat(
getLineFunc(disp2PointY.Value, disp2Image)
.Take(ppu.Scroll.HScroll)
)
.ToArray();
}
}
// 縦2画面
else
{
if (disp1PointY != null)
{
var disp1Image = this.cacheDictionary[Tuple.Create(NameTableType.Table0, disp1PointY.Value / Pattern.MaxHeight)];
if (ppu.Scroll.HScroll == 0 || ppu.Scroll.HScroll >= NesPpuScreenSize.MaxWidth)
{
this.lineDictionary[yLine] = getLineFunc(disp1PointY.Value, disp1Image);
}
else
{
this.lineDictionary[yLine] = getLineFunc(disp1PointY.Value, disp1Image)
.Skip(ppu.Scroll.HScroll)
.Concat(
getLineFunc(disp1PointY.Value, disp1Image)
.Take(ppu.Scroll.HScroll)
)
.ToArray();
}
}
else
{
var disp2Image = this.cacheDictionary[Tuple.Create(NameTableType.Table1, disp2PointY.Value / Pattern.MaxHeight)];
if (ppu.Scroll.HScroll == 0 || ppu.Scroll.HScroll >= NesPpuScreenSize.MaxWidth)
{
this.lineDictionary[yLine] = getLineFunc(disp2PointY.Value, disp2Image);
}
else
{
this.lineDictionary[yLine] = getLineFunc(disp2PointY.Value, disp2Image)
.Skip(ppu.Scroll.HScroll)
.Concat(
getLineFunc(disp2PointY.Value, disp2Image)
.Take(ppu.Scroll.HScroll)
)
.ToArray();
}
}
}
}
