private void Initialize()
{
if (SDL.Init((uint)InitFlags.SDL_INIT_VIDEO) != 0)
{
throw new InvalidOperationException("Failed to init SDL");
}
// TODO: enable mouse input
_window = SDLVideo.CreateWindow("Hello World!", 30, 30, ScreenWidth, ScreenHeight, (uint)(WindowFlags.WINDOW_SHOWN | WindowFlags.WINDOW_RESIZABLE));
if (_window == null)
{
SDL.Quit();
throw new InvalidOperationException("Failed to create window");
}
_renderer = SDLRender.CreateRenderer(_window, -1,
(uint)(RendererFlags.RENDERER_ACCELERATED));
if (_renderer == null)
{
SDL.Quit();
throw new InvalidOperationException("Failed to create renderer");
}
this.OnInitialize();
}
public void Run()
{
this.Initialize();
this.Active = true;
SDLMouse.ShowCursor(0);
double t1 = Stopwatch.GetTimestamp();
//var evnt = new Event();
while (this.Active)
{
// Handle Timing
double t2 = Stopwatch.GetTimestamp();
var elapsedTicks = t2 - t1;
var elapsed = elapsedTicks / TimeSpan.TicksPerMillisecond;
var elapsedS = elapsedTicks / TimeSpan.TicksPerSecond;
t1 = t2;
// Handle Keyboard Input
_lastKeys = _keys;
_keys = SDLKeyboard.GetKeyboardState().ToArray();
// Handle events - we only care about mouse clicks and movement
while (SDLEvents.PollEvent2(out var evnt) != 0)
{
switch (evnt.Type)
{
case (uint)EventType.QUIT:
break;
case (uint)EventType.KEYDOWN:
continue;
default:
Console.WriteLine($"Event: {evnt.Type}");
continue;
}
this.Active = false;
break;
}
if (!this.OnUpdate(elapsedS))
{
this.Active = false;
}
SDLVideo.SetWindowTitle(_window, $"Console Game Engine - FPS: {1.0 / elapsedS:F4}");
PresentFrame();
}
SDLMouse.ShowCursor(1);
}
private void ReleaseUnmanagedResources()
{
SDLRender.DestroyRenderer(_renderer);
SDLVideo.DestroyWindow(_window);
SDL.Quit();
}