main.c

#include <stdio.h>
#include "ops.h"
#include "video.h"
#include "chip8.h"
#include <time.h>

int main(int argc, char** argv) {
	const char* videoScaleStr = argv[1];
	const char* cycleDelayStr = argv[2];
	const char* fname = argv[3];

	bool rawDisassemble = false;

	if (argc > 4 && !strcmp(argv[4], "-d")) set_disassemble_exec();

	else if (argc > 4 && !strcmp(argv[4], "-raw")) {
		set_disassemble_exec();
		set_disassemble_raw();
		rawDisassemble = true;
	}

	char* _a;
	int videoScale = (int)(strtol(videoScaleStr, &_a, 10));
	int cycleDelay = (int)(strtol(cycleDelayStr, &_a, 10));
	
	chip_8 emulator;
	ch_initialize(&emulator);
	ch_loadRom(&emulator, fname);

	if (rawDisassemble) {
		int i = 0;

		while (i < ch_numBytes()) {
			ch_cycle(&emulator);
			i+=2;
		}

		return 0;
	}

	ch_video platform;
	initialize_video(&platform, fname, VIDEO_WIDTH*videoScale, VIDEO_HEIGHT*videoScale, VIDEO_WIDTH, VIDEO_HEIGHT);

	int videoPitch = sizeof(emulator.video[0]) * VIDEO_WIDTH;
	struct timespec last_cycle;
	clock_gettime(CLOCK_MONOTONIC, &last_cycle);

	while (!proc_input(emulator.keypad)) {
		struct timespec now;
		clock_gettime(CLOCK_MONOTONIC, &now);
		double dt = (now.tv_sec - last_cycle.tv_sec) * 1000.0f + (now.tv_nsec - last_cycle.tv_nsec) / 1000000.0f;

		if (dt > cycleDelay) {
			last_cycle = now;
			ch_cycle(&emulator);
			update_video(&platform, emulator.video, videoPitch);
		}
	}

	deinit_video(&platform);
	
	return 0;


}