-impl AppState for ActiveState {
- fn update(&mut self, dt: Nanoseconds) {
- for b in &mut self.bolls {
- b.update();
- }
-
- match dt {
- ns if ns < (NS_PER_FRAME - 90_0000) as u64 => self.change_boll_count(100),
- ns if ns > (NS_PER_FRAME + 90_0000) as u64 => self.change_boll_count(-100),
- _ => {}
- }
- }
-
- fn render(&mut self, canvas: &mut Canvas<Window>, sprites: &mut SpriteManager) {
- /* draw square of blocks */ {
- let blocks = 20;
- let size = 32;
- let offset = point!(
- (self.screen.width as i32 - (blocks + 1) * size) / 2,
- (self.screen.height as i32 - (blocks + 1) * size) / 2
- );
- let block = sprites.get("block");
- for i in 0..blocks {
- canvas
- .copy(
- block,
- None,
- SDLRect::new((i) * size + offset.x, offset.y, size as u32, size as u32),
- )
- .unwrap();
- canvas
- .copy(
- block,
- None,
- SDLRect::new(
- (blocks - i) * size + offset.x,
- (blocks) * size + offset.y,
- size as u32,
- size as u32,
- ),
- )
- .unwrap();
- canvas
- .copy(
- block,
- None,
- SDLRect::new(
- offset.x,
- (blocks - i) * size + offset.y,
- size as u32,
- size as u32,
- ),
- )
- .unwrap();
- canvas
- .copy(
- block,
- None,
- SDLRect::new(
- (blocks) * size + offset.x,
- (i) * size + offset.y,
- size as u32,
- size as u32,
- ),
- )
- .unwrap();
- }
- }
-
- /* draw mario */ {
- let size = 64;
- let offset = point!(
- (self.screen.width as i32 - size) / 2,
- (self.screen.height as i32 - size) / 2
- );
- let radius = 110.0 + size as f32 * 0.5;
- let angle = (self.mario_angle as f32 - 90.0) * PI / 180.0;
- let offset2 = point!((angle.cos() * radius) as i32, (angle.sin() * radius) as i32);
- canvas
- .copy_ex(
- sprites.get("mario"),
- None,
- SDLRect::new(
- offset.x + offset2.x,
- offset.y + offset2.y,
- size as u32,
- size as u32,
- ),
- self.mario_angle,
- sdl2::rect::Point::new(size / 2, size / 2),
- false,
- false,
- )
- .unwrap();
- self.mario_angle = (self.mario_angle + 1.0) % 360.0;
- }
-
- /* draw circles and ellipses*/ {
- let p = point!((self.screen.width / 2) as i16, (self.screen.height / 2) as i16);
- canvas
- .circle(p.x, p.y, 100, Color::RGB(255, 255, 255))
- .unwrap();
- canvas
- .aa_circle(p.x, p.y, 110, Color::RGB(255, 255, 255))
- .unwrap();
- canvas
- .ellipse(p.x, p.y, 50, 100, Color::RGB(255, 255, 255))
- .unwrap();
- canvas
- .aa_ellipse(p.x, p.y, 110, 55, Color::RGB(255, 255, 255))
- .unwrap();
- }
-
- for b in &self.bolls {
- b.draw(canvas, self.boll_size);
- }
- }
-
- fn leave(&self) {
- println!("number of bolls: {}", self.bolls.len());
- }
-
- fn on_event(&mut self, event: Event) {
- match event {
- Event::KeyDown {
- keycode: Some(Keycode::KpPlus),
- ..
- } => self.boll_size = std::cmp::min(self.boll_size + 1, 32),
- Event::KeyDown {
- keycode: Some(Keycode::KpMinus),
- ..
- } => self.boll_size = std::cmp::max(self.boll_size - 1, 1),
- Event::MouseMotion { x, y, .. } => self.bolls.push(Box::new(CircleBoll::new(
- point!(x as f64, y as f64),
- point!(0.0, 0.0),
- ))),
- _ => {}
- }
- }