Blank windows

src/bin/racing-game.rs

@@ -1,4 +1,71 @@
+use opengl_rust::*;
+
+struct SdlThings {
+	sdl_context: sdl2::Sdl,
+	window: sdl2::video::Window,
+	gl_ctx: sdl2::video::GLContext,
+}
+
+impl SdlThings {
+	pub fn new () -> Self 
+	{
+		let sdl_context = sdl2::init ().unwrap ();
+		
+		let video_subsystem = sdl_context.video ().unwrap ();
+		let window = video_subsystem.window ("Racing game.", 1280, 720)
+			.position_centered ()
+			.opengl ()
+			.build ()
+		.unwrap ();
+		
+		gl::load_with (|s| {
+			video_subsystem.gl_get_proc_address (s) as *const _
+		});
+		
+		// The only OpenGL function anyone uses, anyway
+		
+		assert! (gl::Clear::is_loaded ());
+		
+		let gl_ctx = window.gl_create_context ().unwrap ();
+		
+		Self {
+			sdl_context,
+			window,
+			gl_ctx,
+		}
+	}
+}
 
 fn main () {
-	println! ("Racing game.");
+	use sdl2::event::Event;
+	use sdl2::keyboard::{Keycode, Scancode};
+	
+	let siddle = SdlThings::new ();
+	
+	let mut time_step = timestep::TimeStep::new (60, 1000);
+	
+	let mut gl_state = gl_state::GlState::default ();
+	
+	let mut event_pump = siddle.sdl_context.event_pump ().unwrap ();
+	'running: loop {
+		let frames_to_do = time_step.step ();
+		
+		for event in event_pump.poll_iter () {
+			match event {
+				Event::Quit {..} |
+				Event::KeyDown { keycode: Some (Keycode::Escape), .. } => {
+					break 'running
+				},
+				_ => (),
+			}
+		}
+		
+		siddle.window.gl_make_current (&siddle.gl_ctx).unwrap ();
+		
+		// Good graphics go here
+		
+		siddle.window.gl_swap_window ();
+		
+		std::thread::sleep (std::time::Duration::from_millis (15));
+	}
 }