+
+ pub fn start(&mut self) {
+ let mut frame_count: u64 = 0;
+ let mut fps_time = PreciseTime::now();
+ let mut last_time = PreciseTime::now();
+ let screen = self.canvas.output_size().unwrap();
+ let screen = Rect::from((screen.0 as i32, screen.1 as i32));
+
+ let mut mario_angle = 0.0;
+
+ 'running: loop {
+ self.canvas.set_draw_color(Color::RGB(0, 0, 0));
+ self.canvas.clear();
+ {
+ let blocks = 20;
+ let size = 32;
+ let offset = point!(
+ (screen.width - (blocks + 1) * size) / 2,
+ (screen.height - (blocks + 1) * size) / 2
+ );
+ let block = self.sprites.get("block");
+ for i in 0..blocks {
+ self.canvas
+ .copy(
+ block,
+ None,
+ SDLRect::new((i) * size + offset.x, offset.y, size as u32, size as u32),
+ )
+ .unwrap();
+ self.canvas
+ .copy(
+ block,
+ None,
+ SDLRect::new(
+ (blocks - i) * size + offset.x,
+ (blocks) * size + offset.y,
+ size as u32,
+ size as u32,
+ ),
+ )
+ .unwrap();
+ self.canvas
+ .copy(
+ block,
+ None,
+ SDLRect::new(
+ offset.x,
+ (blocks - i) * size + offset.y,
+ size as u32,
+ size as u32,
+ ),
+ )
+ .unwrap();
+ self.canvas
+ .copy(
+ block,
+ None,
+ SDLRect::new(
+ (blocks) * size + offset.x,
+ (i) * size + offset.y,
+ size as u32,
+ size as u32,
+ ),
+ )
+ .unwrap();
+ }
+ }
+ {
+ let size = 64;
+ let offset = point!(
+ (screen.width - size) / 2,
+ (screen.height - size) / 2
+ );
+ let radius = 110.0 + size as f32 * 0.5;
+ let angle = (mario_angle as f32 - 90.0) * PI / 180.0;
+ let offset2 = point!((angle.cos() * radius) as i32, (angle.sin() * radius) as i32);
+ self.canvas
+ .copy_ex(
+ self.sprites.get("mario"),
+ None,
+ SDLRect::new(
+ offset.x + offset2.x,
+ offset.y + offset2.y,
+ size as u32,
+ size as u32,
+ ),
+ mario_angle,
+ sdl2::rect::Point::new(size / 2, size / 2),
+ false,
+ false,
+ )
+ .unwrap();
+ mario_angle += 1.0;
+ if mario_angle >= 360.0 {
+ mario_angle -= 360.0
+ }
+ }
+ {
+ let p = point!((screen.width / 2) as i16, (screen.height / 2) as i16);
+ self.canvas
+ .circle(p.x, p.y, 100, Color::RGB(255, 255, 255))
+ .unwrap();
+ self.canvas
+ .aa_circle(p.x, p.y, 110, Color::RGB(255, 255, 255))
+ .unwrap();
+ self.canvas
+ .ellipse(p.x, p.y, 50, 100, Color::RGB(255, 255, 255))
+ .unwrap();
+ self.canvas
+ .aa_ellipse(p.x, p.y, 110, 55, Color::RGB(255, 255, 255))
+ .unwrap();
+ }
+
+ // window.gl_swap_window();
+ for event in self.event_pump.poll_iter() {
+ match event {
+ Event::Quit { .. }
+ | Event::KeyDown {
+ keycode: Some(Keycode::Escape),
+ ..
+ } => {
+ break 'running;
+ }
+ Event::KeyDown {
+ keycode: Some(Keycode::F11),
+ ..
+ } => {
+ match self.canvas.window().fullscreen_state() {
+ FullscreenType::Off => self
+ .canvas
+ .window_mut()
+ .set_fullscreen(FullscreenType::Desktop),
+ _ => self.canvas.window_mut().set_fullscreen(FullscreenType::Off),
+ }
+ .unwrap();
+ }
+ Event::Window {
+ win_event: WindowEvent::Resized(x, y),
+ ..
+ } => {
+ println!("window resized({}, {})", x, y)
+ }
+ Event::Window {
+ win_event: WindowEvent::Maximized,
+ ..
+ } => {
+ println!("window maximized")
+ }
+ Event::Window {
+ win_event: WindowEvent::Restored,
+ ..
+ } => {
+ println!("window restored")
+ }
+ Event::Window {
+ win_event: WindowEvent::Enter,
+ ..
+ } => {
+ println!("window enter")
+ }
+ Event::Window {
+ win_event: WindowEvent::Leave,
+ ..
+ } => {
+ println!("window leave")
+ }
+ Event::Window {
+ win_event: WindowEvent::FocusGained,
+ ..
+ } => {
+ println!("window focus gained")
+ }
+ Event::Window {
+ win_event: WindowEvent::FocusLost,
+ ..
+ } => {
+ println!("window focus lost")
+ }
+ _ => self.state.on_event(event),
+ }
+ }
+
+ let duration =
+ last_time.to(PreciseTime::now()).num_nanoseconds().unwrap() as Nanoseconds;
+ last_time = PreciseTime::now();
+ self.state.update(duration);
+ self.state.render(&mut self.canvas);
+ self.canvas.present();
+
+ frame_count += 1;
+ if frame_count == FPS as u64 {
+ let duration = fps_time.to(PreciseTime::now()).num_nanoseconds().unwrap() as f64
+ / 1_000_000_000.0;
+ println!("fps: {}", frame_count as f64 / duration);
+ frame_count = 0;
+ fps_time = PreciseTime::now();
+ }
+ }
+
+ self.state.leave();
+ }