public Ppu(NesEngine theEngine)
{
myEngine = theEngine;
nameTables = new byte[0x2000];
spriteRam = new byte[0x100];
//offscreenBuffer = new int[256 * 240];
offScreenBuffer = new short[256 * 240];
sprite0Buffer = new int[256];
myVideo = new VideoNes(this);
RestartPpu();
}
public static void Run(string defaultRom)
{
if (String.IsNullOrEmpty(defaultRom))
{
throw new ArgumentNullException("defaultRom");
}
try
{
if (File.Exists(defaultRom))
{
filePath = "";
fileDirectory = "";
}
else if (File.Exists(Path.Combine(fileDirectory, defaultRom)))
{
filePath = "";
}
//our game-specific bool
//FIXME: move this to a more sane place when I figure out where to put it
gameIsRunning = false;
myEngine = new NesEngine();
//If they gave us a ROM to run on the commandline, go ahead and start it up
if (!String.IsNullOrEmpty(defaultRom))
{
try
{
RunCart(Path.Combine(Path.Combine(filePath, fileDirectory), defaultRom));
}
catch (ArgumentException e)
{
Console.WriteLine(e.StackTrace);
Console.WriteLine("defaultRom: " + defaultRom);
Console.WriteLine("fileDirectory: " + fileDirectory);
}
}
}
catch (ArgumentException e)
{
Console.WriteLine(e.StackTrace);
Console.WriteLine("defaultRom: " + defaultRom);
Console.WriteLine("fileDirectory: " + fileDirectory);
}
}
public Ppu(NesEngine theEngine)
{
myEngine = theEngine;
nameTables = new byte[0x2000];
spriteRam = new byte[0x100];
//offscreenBuffer = new int[256 * 240];
offScreenBuffer = new short[256 * 240];
sprite0Buffer = new int[256];
myVideo = new VideoNes(this);
RestartPpu();
}
public Mapper(NesEngine theEngine, NesCartridge theCartridge)
{
myEngine = theEngine;
mapperCartridge = theCartridge;
currentPrgRomPage = new uint[8];
currentChrRomPage = new uint[8];
//timerIrqEnabled;
}
public static void Run(string defaultRom)
{
if (String.IsNullOrEmpty(defaultRom))
{
throw new ArgumentNullException("defaultRom");
}
try
{
if (File.Exists(defaultRom))
{
filePath = "";
fileDirectory = "";
}
else if (File.Exists(Path.Combine(fileDirectory, defaultRom)))
{
filePath = "";
}
//our game-specific bool
//FIXME: move this to a more sane place when I figure out where to put it
gameIsRunning = false;
myEngine = new NesEngine();
//If they gave us a ROM to run on the commandline, go ahead and start it up
if (!String.IsNullOrEmpty(defaultRom))
{
try
{
RunCart(Path.Combine(Path.Combine(filePath, fileDirectory), defaultRom));
}
catch (ArgumentException e)
{
Console.WriteLine(e.StackTrace);
Console.WriteLine("defaultRom: " + defaultRom);
Console.WriteLine("fileDirectory: " + fileDirectory);
}
}
}
catch (ArgumentException e)
{
Console.WriteLine(e.StackTrace);
Console.WriteLine("defaultRom: " + defaultRom);
Console.WriteLine("fileDirectory: " + fileDirectory);
}
}
public ProcessorNes6502(NesEngine theEngine)
{
myEngine = theEngine;
//aRegister;
//xIndexRegister = 0;
//yIndexRegister = 0;
spRegister = 0xff;
//FIXME: this is for debugging
//totalTickCount = 0;
}
public bool RenderNextScanline()
{
int i;
//Console.WriteLine("Rendering line: {0}", currentScanline);
if (currentScanline < 234)
{
//Clean up the line from before
if ((uint)nameTables[0x1f00] > 63)
{
for (i = 0; i < 256; i++)
{
//offscreenBuffer[(currentScanline * 256) + i] = (int)Nes_Palette[(int)nameTables[0x1f00]];
offScreenBuffer[(currentScanline * 256) + i] = 0;
sprite0Buffer[i] = 0;
}
}
else
{
for (i = 0; i < 256; i++)
{
offScreenBuffer[(currentScanline * 256) + i] = (short)NesPalette[(uint)nameTables[0x1f00]];
sprite0Buffer[i] = 0;
//offscreenBuffer[(currentScanline * 256) + i] = 0;
}
}
spritesCrossed = 0;
//We are in visible territory, so render to our offscreen buffer
if (spritesVisible)
{
RenderSprites(0x20);
}
if (backgroundVisible)
{
RenderBackground();
}
if (spritesVisible)
{
RenderSprites(0);
}
//Check to see if we hit sprite 0 against the background
//Sprite pixels = 1, BG = 4, so if we're greater than 4, we hit
if (sprite0Hit == 0)
{
for (i = 0; i < 256; i++)
{
//Console.Write("{0} ", sprite0Buffer[i]);
if (sprite0Buffer[i] > 4)
{
sprite0Hit = 1;
}
//offscreenBuffer[(currentScanline * 256) + i] = 0;
}
}
//Console.WriteLine("Scanline: {0} Hit: {1}", currentScanline, sprite0Hit);
if (!noBackgroundClipping)
{
for (i = 0; i < 8; i++)
{
offScreenBuffer[(currentScanline * 256) + i] = 0;
}
}
}
if (currentScanline == 240)
{
myVideo.BlitScreen();
NesEngine.CheckForEvents();
}
currentScanline++;
if (myEngine.FixScrollOffset1)
{
if (currentScanline > 244)
{
//FIXME: This helps fix Battle of Olympus, does it
//break anything?
//244 and greater is vblank, so maybe this makes sense
//--OR--
//Is this cleared on a read?
sprite0Hit = 0;
}
}
if (currentScanline > 262)
{
//Reset our screen-by-screen variables
currentScanline = 0;
sprite0Hit = 0;
//scrollH = 0;
//scrollV = 0;
frameCounter++;
/*
* if (frameCounter == 60)
* {
* dtafter = DateTime.Now;
* Console.WriteLine("FPS: " + (60.0 / ((dtafter-dtbefore).Ticks / 10000000.0)));
* dtbefore = dtafter;
* frameCounter = 0;
* }
*/
}
//Are we about to NMI on vblank?
if ((currentScanline == 240) && (executeNMIonVBlank == true))
{
return(true);
}
else
{
return(false);
}
}
