public Emulator()
{
//Set emulation settings
Turbo = false;
Speed = 1;
Pause = false;
DisableAPU = false;
TrackHistory = false;
State = EmulatorState.Halted;
queueLoad = false;
romPath = "";
queueSaveState = false;
queueLoadState = false;
saveStatePath = "";
//Init emulator
CPU = new CPU(this);
PPU = new PPU(this);
APU = new APU(this);
Controllers = new Controller[] { new Controller(), new Controller() };
NetPlayServer = new NetPlayServer(this);
GameGenie = new GameGenie();
RewindManager = new RewindManager(this);
//Init emulation thread
EmuThread = new Thread(EmulationLoop);
EmuThread.IsBackground = true;
EmuThread.Start();
}
//Save states and rom loading
private void HandleIO()
{
if (queueLoadState)
{
queueLoadState = false;
using (FileStream FS = new FileStream(saveStatePath, FileMode.Open))
{
ReadStateFromStream(FS);
}
RewindManager.Reset();
}
else if (queueSaveState)
{
queueSaveState = false;
using (FileStream FS = new FileStream(saveStatePath, FileMode.OpenOrCreate))
{
WriteStateToStream(FS);
}
}
else if (queueLoad)
{
queueLoad = false;
GamePak = new GamePak(romPath);
Mapper = Mapper.Create(this);
CPU.Reset();
PPU.Reset();
APU.Reset();
RewindManager.Reset();
State = EmulatorState.Running;
}
}
internal void ReadStateFromStream(Stream stream)
{
BinaryFormatter BF = new BinaryFormatter();
object[] data = (object[])BF.Deserialize(stream);
//Make sure to fix dead references from serialization
CPU = (CPU)data[0];
CPU.RefreshEmulatorReference(this);
CPU.Memory.RefreshEmulatorReference(this);
PPU = (PPU)data[1];
PPU.RefreshEmulatorReference(this);
PPU.Memory.RefreshEmulatorReference(this);
APU = (APU)data[2];
APU.RefreshEmulatorReference(this);
Mapper = (Mapper)data[3];
Mapper.RefreshEmulatorReference(this);
if (GamePak.UsesCharRAM)
{
GamePak.LoadCharRAM((byte[])data[4]);
}
}
private void DoFrame()
{
bool PreFrame = PPU.OddFrame;
while (PreFrame == PPU.OddFrame)
{
ulong ElapsedCycles = CPU.Step();
for (uint i = 0; i < ElapsedCycles && !DisableAPU; i++)
{
APU.Step();
}
//3 PPU per CPU
for (uint i = 0; i < ElapsedCycles * 3; i++)
{
PPU.Step();
//Inform mapper
Mapper.Step();
}
}
}