//create a new nes object
void nes_init()
{
//clear out the nes structure (but dont clear input device/bios pointers...HACK)
memset(nes,0,sizeof(nes_t) - (sizeof(inputdev_t*) * 3 + sizeof(u8*) * 3));
//palette info
nes->hue = config.hue;
nes->sat = config.sat;
//initialize the 6502
dead6502_init();
//initialize the ppu event system
ppu_event_init();
//set up the apu
nes->apu = apu_create(0,SOUND_HZ,60,16,dead6502_irq);
//enable sound channels
nes->apu->mix_enable = config.soundenabled ? config.soundchannels : 0;
//set the 6502 data pointer
dead6502_setdata(&nes->cpu);
apu_setcontext(nes->apu);
//generate a kevin horton palette for the video
palette_generate(nes->hue,nes->sat);
}
int main(int argc, char *argv[]) {
int sy, sx;
if(argc != 4) {
usage(argv[0]);
return 1;
}
Config conf = { atoi(argv[1]), atoi(argv[2]), atoi(argv[3]) };
if(conf.screenX == 0 || conf.screenY == 0 || conf.iterations == 0) {
usage(argv[0]);
return 1;
}
Color palette[COLORS];
palette_generate(palette);
init_ppm(conf);
float xrange = MAX_X - MIN_X;
float yrange = MAX_Y - MIN_Y;
for(sy = 1; sy <= conf.screenY; sy++) {
for(sx = 1; sx <= conf.screenX; sx++) {
float x, y;
x = 0.0;
y = 0.0;
float x0 = sx / (float)conf.screenX * xrange + MIN_X;
float y0 = sy / (float)conf.screenY * yrange + MIN_Y;
int i = 0;
while(((x*x - y*y) < (2*2)) && i < conf.iterations) {
float xtmp;
xtmp = x*x - y*y + x0;
y = 2*x*y + y0;
x = xtmp;
i++;
}
Color c = { 0, 0, 0 };
if((x*x + y*y) > (2*2)) {
c = palette[i % COLORS];
}
plot(sx, sy, c);
}
printf("\n");
}
return 0;
}
