nes/examples/sdl/main.cpp

54 lines
1.7 KiB
C++

#include "../../src/System.h"
#include "Window.h"
#include "SdlKeyboardController.h"
#include <thread>
int main() {
using namespace std::placeholders;
nes::System device;
nes::SdlWindow window(nes::Ppu::SCREEN_WIDTH, nes::Ppu::SCREEN_HEIGHT);
window.setSize(nes::Ppu::SCREEN_WIDTH*2, nes::Ppu::SCREEN_HEIGHT*2);
bool working = true;
SDL_Event e;
device.connect(std::make_shared<SdlKeyboardController>());
//device.insertCartridge("/home/selim/Downloads/dk.nes");
device.insertCartridge("/Users/selim/Documents/nes/ppu_tests/vram_access.nes");
//device.insertCartridge("/Users/selim/Documents/nes/ff.nes");
//device.insertCartridge("C:\\Users\\selim\\Documents\\nestest.nes");
auto frameStart = std::chrono::steady_clock::now();
while (working) {
if(auto frameBuffer = device.tick()) {
// Draw frame
window.drawFrame(frameBuffer);
// Poll all accumulated events
while(SDL_PollEvent(&e)) {
switch(e.type) {
case SDL_EVENT_WINDOW_CLOSE_REQUESTED:
case SDL_EVENT_QUIT:
working = false;
break;
}
}
// Wait some time for slowing down to 60 fps
auto renderingTime = std::chrono::steady_clock::now();
auto elapsedTime = std::chrono::duration_cast<std::chrono::nanoseconds>(renderingTime - frameStart).count();
int64_t waitTime = 1000000000/60 - elapsedTime;
if(waitTime > 0) {
std::this_thread::sleep_for(std::chrono::nanoseconds(waitTime));
}
frameStart = std::chrono::steady_clock::now();
}
}
return 0;
}