public void Init(GifCube program)
{
stack = new Stack <GifStackFrame>();
//stack = new List<GifStackFrame>() { new GifStackFrame(program, ColorRGB.Black, ColorDir.PlusR) };
for (int x = 0; x < 16; x++)
{
for (int y = 0; y < 16; y++)
{
for (int z = 0; z < 16; z++)
{
registerTargets[x, y, z] = new GifCube();
}
}
}
runningRegister = ColorRGB.White;
registerTargets[runningRegister.R16, runningRegister.G16, runningRegister.B16] = program;
registerTargets[8, 8, 8] = registerPositions;
current = new GifValue_Readonly(ColorRGB.Black);
halted = false;
}
public void Tick()
{
if (halted)
{
return;
}
ColorRGB programPosition = registerPositions[runningRegister];
GifCube program = GetRegisterTarget(runningRegister);
ColorRGB instruction = program[programPosition];
ColorRGB currentColor = current.Read();
// point to the next instruction
bool overflow;
registerPositions[runningRegister] = registerPositions[runningRegister].Increment(out overflow);
if (overflow)
{
halted = true;
return;
}
switch (instruction.hexSignature)
{
case 0x000: // Return
DoReturn(current);
break;
case 0xCCC: // Assign
stack.Push(new GifStackFrame(current, 0xCCC, runningRegister));
break;
case 0xC8C: // Call
stack.Push(new GifStackFrame(current, 0xC8C, runningRegister));
break;
case 0xC04: // Load GIF
break;
case 0xC84: // Save GIF
//registerTargets[currentColor.R16, currentColor.G16, currentColor.B16].Save(GetRegisterName(currentColor) + ".gif");
break;
case 0xCC4: // Retarget
stack.Push(new GifStackFrame(current, 0xCC4, runningRegister));
break;
case 0x00C: // RegisterPos
current = new GifCursor(currentColor, currentColor, registerPositions);
break;
case 0x08C: // RegisterVal
current = new GifCursor(currentColor, registerPositions[currentColor], registerTargets[currentColor.R16, currentColor.G16, currentColor.B16]);
break;
case 0x0CC: // Data
current = new GifCursor(ColorRGB.White, currentColor, registerTargets[15, 15, 15]);
break;
case 0xC0C: // Modify
bool failed;
registerPositions[runningRegister] = registerPositions[runningRegister] + new ColorRGB(48, 0, 0);
current = Modify(currentColor,
new ColorRGB[] {
program[programPosition + new ColorRGB(16, 0, 0)],
program[programPosition + new ColorRGB(32, 0, 0)],
program[programPosition + new ColorRGB(48, 0, 0)]
},
out failed
);
if (failed)
{
DoReturn(current);
}
break;
default:
current = new GifCursor(runningRegister, programPosition, program);
break;
}
}
public GifCursor(ColorRGB register, ColorRGB position, GifCube cube)
{
this.register = register;
this.position = position;
this.cube = cube;
}