int main(int argc, char **argv) {
srand(time(NULL));
if (argc != 2) {
cout << "Usage is : chipote [ROMFILE]" << endl;
return EXIT_FAILURE;
}
// SFML init
sf::RenderWindow window;
window.create(sf::VideoMode(64 * SCALE, 32 * SCALE), "chipote");
window.setFramerateLimit(60);
// display init
sf::Image renderer;
sf::Texture texture;
sf::Sprite sprite;
// help: the image is where the pixels are toggled.
// the texture/sprite are just here to show the pixels
// easily on the SFML window
renderer.create(64, 32, sf::Color::Black);
texture.loadFromImage(renderer);
sprite.setTexture(texture);
sprite.setScale(SCALE, SCALE);
// chip8 init
Chip8 interpreter;
interpreter.load(argv[1]);
// key bindings init
map<int,int> binding_keys;
binding_keys[sf::Keyboard::Num1] = uint8_t(0x1);
binding_keys[sf::Keyboard::Num2] = uint8_t(0x2);
binding_keys[sf::Keyboard::Num3] = uint8_t(0x3);
binding_keys[sf::Keyboard::Num4] = uint8_t(0xC);
binding_keys[sf::Keyboard::A] = uint8_t(0x4);
binding_keys[sf::Keyboard::Z] = uint8_t(0x5);
binding_keys[sf::Keyboard::E] = uint8_t(0x6);
binding_keys[sf::Keyboard::R] = uint8_t(0xD);
binding_keys[sf::Keyboard::Q] = uint8_t(0x7);
binding_keys[sf::Keyboard::S] = uint8_t(0x8);
binding_keys[sf::Keyboard::D] = uint8_t(0x9);
binding_keys[sf::Keyboard::F] = uint8_t(0xE);
binding_keys[sf::Keyboard::W] = uint8_t(0xA);
binding_keys[sf::Keyboard::X] = uint8_t(0x0);
binding_keys[sf::Keyboard::C] = uint8_t(0xB);
binding_keys[sf::Keyboard::V] = uint8_t(0xF);
sf::Event event;
while (window.isOpen()) {
// handle events
while (window.pollEvent(event)) {
if (event.type == sf::Event::Closed) {
window.close();
}
if (event.type == sf::Event::KeyPressed) {
interpreter.is_pressed(binding_keys[event.key.code], true);
if (DEBUG && event.key.code == sf::Keyboard::Space) {
interpreter.update();
}
}
if (event.type == sf::Event::KeyReleased) {
interpreter.is_pressed(binding_keys[event.key.code], false);
}
}
// update
for (int i = 0; i < 7; i++) {
if (!DEBUG) {
interpreter.update(); // step the machine of 1 cycle
}
if (interpreter.draw_flag) {
interpreter.draw_flag = false;
for (int i = 0; i < 2048; i++) {
int py = floor(i / 64);
int px = floor(i - (py * 64));
if (interpreter.screen[i] == 0) {
renderer.setPixel(px, py, sf::Color::Black);
}
else {
renderer.setPixel(px, py, sf::Color::White);
}
}
texture.loadFromImage(renderer);
}
}
// draw
window.clear();
window.draw(sprite);
window.display();
}
return EXIT_SUCCESS;
}
void Debugger::parse_line(Chip8 &cpu) {
std::string line;
std::getline(std::cin, line);
if (line.compare("step") == 0 || line.compare("s") == 0 ||
(line.compare("") == 0 && last_command == STEP)) {
cpu.update(true);
last_command = STEP;
} else if (line.compare(0, 5, "step ", 5) == 0) {
line = line.substr(5, line.size());
int count = std::stoi(line);
for (int i = 0; i < count; i++)
{
cpu.update(true);
}
last_command = STEP;
} else if (line.compare(0, 2, "s ", 2) == 0) {
line = line.substr(2, line.size());
int count = std::stoi(line);
for (int i = 0; i < count; i++)
{
cpu.update(true);
}
last_command = STEP;
} else if (line.compare("exit") == 0 || last_command == EXIT) {
std::cout << "leaving Emulator at: " << std::setbase(16) << cpu.get_PC()
<< std::endl;
exit(0);
} else if (line.compare(0, 6, "print ", 6) == 0) {
line = line.substr(6, line.size());
if (line.compare("PC") == 0) {
std::cout << "PC: " << std::setbase(16) << cpu.get_PC() << std::endl;
} else if (line.compare("SP") == 0) {
std::cout << "SP: " << std::setbase(16) << cpu.get_SP() << std::endl;
} else if (line.compare("I") == 0) {
std::cout << "I: " << std::setbase(16) << cpu.get_I() << std::endl;
} else if (line.compare("timer") == 0) {
std::cout << "TIMER: " << std::setbase(16) << cpu.get_timer()
<< std::endl;
} else if (line.compare("sound") == 0) {
std::cout << "SOUND: " << std::setbase(16) << cpu.get_sound()
<< std::endl;
} else if (line.find_first_of("[") != line.npos) {
std::string addr =
line.substr(line.find_first_of("[") + 1, line.find_last_of("]") - 1);
unsigned int num = std::stoul(addr, 0, 16);
std::cout << "memory@address[" << std::setbase(16) << num
<< "]: " << (int)cpu.get_mem(num) << std::endl;
} else if (line.find("V(") != line.npos) {
std::string addr =
line.substr(line.find_first_of("(") + 1, line.find_last_of(")") - 1);
unsigned int num = std::stoul(addr, 0, 16);
std::cout << "register V(" << std::setbase(16) << num
<< "): " << (int)cpu.get_V_regs(num) << std::endl;
} else if (line.compare("cpu") == 0) {
cpu.print_state();
}
} else if (line.compare("continue") == 0 || last_command == CONTINUE) {
while (true) {
cpu.update();
last_command = CONTINUE;
}
} else {
std::cout << "Vigilant-Chip8> Command not recognized.\n";
last_command = INVALID;
}
}
int main(int argc, char* argv[])
{
Chip8 chip;
if (argc == 2)
{
string path(argv[1]);
chip.loadProgram(path);
sf::RenderWindow window(sf::VideoMode(1024, 512), "Chip8");
window.setFramerateLimit(60);
window.setKeyRepeatEnabled(false);
sf::Clock clock;
while (window.isOpen())
{
sf::Event event;
while (window.pollEvent(event))
{
if (event.type == sf::Event::Closed)
window.close();
else if (event.type == sf::Event::KeyPressed)
{
switch (event.key.code)
{
case sf::Keyboard::Num1:
chip.pressKey(0);
break;
case sf::Keyboard::Num2:
chip.pressKey(1);
break;
case sf::Keyboard::Num3:
chip.pressKey(2);
break;
case sf::Keyboard::Num4:
chip.pressKey(3);
break;
case sf::Keyboard::Q:
chip.pressKey(4);
break;
case sf::Keyboard::W:
chip.pressKey(5);
break;
case sf::Keyboard::E:
chip.pressKey(6);
break;
case sf::Keyboard::R:
chip.pressKey(7);
break;
case sf::Keyboard::A:
chip.pressKey(8);
break;
case sf::Keyboard::S:
chip.pressKey(9);
break;
case sf::Keyboard::D:
chip.pressKey(10);
break;
case sf::Keyboard::F:
chip.pressKey(11);
break;
case sf::Keyboard::Z:
chip.pressKey(12);
break;
case sf::Keyboard::X:
chip.pressKey(13);
break;
case sf::Keyboard::C:
chip.pressKey(14);
break;
case sf::Keyboard::V:
chip.pressKey(15);
break;
}
}
else if (event.type == sf::Event::KeyReleased)
{
switch (event.key.code)
{
case sf::Keyboard::Num1:
chip.releaseKey(0);
break;
case sf::Keyboard::Num2:
chip.releaseKey(1);
break;
case sf::Keyboard::Num3:
chip.releaseKey(2);
break;
case sf::Keyboard::Num4:
chip.releaseKey(3);
break;
case sf::Keyboard::Q:
chip.releaseKey(4);
break;
case sf::Keyboard::W:
chip.releaseKey(5);
break;
case sf::Keyboard::E:
chip.releaseKey(6);
break;
case sf::Keyboard::R:
chip.releaseKey(7);
break;
case sf::Keyboard::A:
chip.releaseKey(8);
break;
case sf::Keyboard::S:
chip.releaseKey(9);
break;
case sf::Keyboard::D:
chip.releaseKey(10);
break;
case sf::Keyboard::F:
chip.releaseKey(11);
break;
case sf::Keyboard::Z:
chip.releaseKey(12);
break;
case sf::Keyboard::X:
chip.releaseKey(13);
break;
case sf::Keyboard::C:
chip.releaseKey(14);
break;
case sf::Keyboard::V:
chip.releaseKey(15);
break;
}
}
}
window.clear(sf::Color::Black);
chip.update(clock.restart().asMilliseconds());
window.draw(chip);
window.display();
}
}
return 0;
}