2 use common::{Point2D, Rect};
3 use point; // defined in common, but loaded from main...
5 use sdl2::event::Event;
6 use sdl2::event::WindowEvent;
7 use sdl2::gfx::primitives::DrawRenderer;
8 use sdl2::keyboard::Keycode;
9 use sdl2::pixels::Color;
10 use sdl2::rect::Rect as SDLRect;
11 use sdl2::render::BlendMode;
12 use sdl2::render::Canvas;
13 use sdl2::video::FullscreenType;
14 use sdl2::video::{SwapInterval, Window};
15 use sdl2::{EventPump, VideoSubsystem};
16 use sprites::SpriteManager;
17 use std::f32::consts::PI;
18 use time::PreciseTime;
19 use {SCREEN_HEIGHT, SCREEN_WIDTH};
21 pub type Nanoseconds = u64;
24 const NS_PER_FRAME: u32 = 1_000_000_000 / FPS;
27 pub struct AppBuilder {
28 resolution: Rect<u16>,
29 state: Option<Box<dyn AppState>>,
30 title: Option<String>,
34 pub fn with_resolution(mut self, width: u16, height: u16) -> Self {
35 self.resolution = Rect { width, height };
39 pub fn with_state(mut self, state: Box<dyn AppState>) -> Self {
40 self.state = Some(state);
44 pub fn with_title(mut self, title: &str) -> Self {
45 self.title = Some(title.to_string());
49 pub fn build(self) -> Result<App, String> {
50 let context = sdl2::init().unwrap();
51 sdl2::image::init(sdl2::image::InitFlag::PNG)?;
52 let video = context.video()?;
54 self.print_video_display_modes(&video);
59 self.resolution.width.into(),
60 self.resolution.height.into(),
64 // .fullscreen_desktop()
68 context.mouse().show_cursor(false);
70 let mut canvas = window.into_canvas().build().unwrap();
71 canvas.set_blend_mode(BlendMode::Add);
72 canvas.set_draw_color(Color::RGB(0, 0, 0));
76 video.gl_set_swap_interval(SwapInterval::VSync)?;
78 let event_pump = context.event_pump()?;
79 let sprites = SpriteManager::new(canvas.texture_creator());
85 state: self.state.unwrap_or_else(|| Box::new(ActiveState::new())),
89 fn print_video_display_modes(&self, video: &VideoSubsystem) {
90 println!("video subsystem: {:?}", video);
91 println!("current_video_driver: {:?}", video.current_video_driver());
92 for display in 0..video.num_video_displays().unwrap() {
94 "=== display {} - {} ===",
96 video.display_name(display).unwrap()
99 " display_bounds: {:?}",
100 video.display_bounds(display).unwrap()
103 " num_display_modes: {:?}",
104 video.num_display_modes(display).unwrap()
107 " desktop_display_mode: {:?}",
108 video.desktop_display_mode(display).unwrap()
111 " current_display_mode: {:?}",
112 video.current_display_mode(display).unwrap()
114 for mode in 0..video.num_display_modes(display).unwrap() {
118 video.display_mode(display, mode).unwrap()
122 println!("swap interval: {:?}", video.gl_get_swap_interval());
127 pub canvas: Canvas<Window>,
128 pub event_pump: EventPump,
129 pub sprites: SpriteManager,
130 pub state: Box<dyn AppState>,
134 #[allow(clippy::new_ret_no_self)]
135 pub fn new() -> AppBuilder {
139 pub fn load_sprites(&mut self, sprites: &[(&str, &str)]) {
140 for (name, file) in sprites {
141 self.sprites.load(name, file);
145 pub fn start(&mut self) {
146 let mut frame_count: u64 = 0;
147 let mut fps_time = PreciseTime::now();
148 let mut last_time = PreciseTime::now();
150 let mut mario_angle = 0.0;
153 self.canvas.set_draw_color(Color::RGB(0, 0, 0));
159 (SCREEN_WIDTH as i32 - (blocks + 1) * size) / 2,
160 (SCREEN_HEIGHT as i32 - (blocks + 1) * size) / 2
162 let block = self.sprites.get("block");
168 SDLRect::new((i) * size + offset.x, offset.y, size as u32, size as u32),
176 (blocks - i) * size + offset.x,
177 (blocks) * size + offset.y,
189 (blocks - i) * size + offset.y,
200 (blocks) * size + offset.x,
201 (i) * size + offset.y,
212 (SCREEN_WIDTH as i32 - size) / 2,
213 (SCREEN_HEIGHT as i32 - size) / 2
215 let radius = 110.0 + size as f32 * 0.5;
216 let angle = (mario_angle as f32 - 90.0) * PI / 180.0;
217 let offset2 = point!((angle.cos() * radius) as i32, (angle.sin() * radius) as i32);
220 self.sprites.get("mario"),
223 offset.x + offset2.x,
224 offset.y + offset2.y,
229 sdl2::rect::Point::new(size / 2, size / 2),
235 if mario_angle >= 360.0 {
240 let p = point!((SCREEN_WIDTH / 2) as i16, (SCREEN_HEIGHT / 2) as i16);
242 .circle(p.x, p.y, 100, Color::RGB(255, 255, 255))
245 .aa_circle(p.x, p.y, 110, Color::RGB(255, 255, 255))
248 .ellipse(p.x, p.y, 50, 100, Color::RGB(255, 255, 255))
251 .aa_ellipse(p.x, p.y, 110, 55, Color::RGB(255, 255, 255))
255 // window.gl_swap_window();
256 for event in self.event_pump.poll_iter() {
260 keycode: Some(Keycode::Escape),
266 keycode: Some(Keycode::F11),
269 match self.canvas.window().fullscreen_state() {
270 FullscreenType::Off => self
273 .set_fullscreen(FullscreenType::Desktop),
274 _ => self.canvas.window_mut().set_fullscreen(FullscreenType::Off),
279 win_event: WindowEvent::Resized(x, y),
282 println!("window resized({}, {})", x, y)
285 win_event: WindowEvent::Maximized,
288 println!("window maximized")
291 win_event: WindowEvent::Restored,
294 println!("window restored")
297 win_event: WindowEvent::Enter,
300 println!("window enter")
303 win_event: WindowEvent::Leave,
306 println!("window leave")
309 win_event: WindowEvent::FocusGained,
312 println!("window focus gained")
315 win_event: WindowEvent::FocusLost,
318 println!("window focus lost")
320 _ => self.state.on_event(event),
325 last_time.to(PreciseTime::now()).num_nanoseconds().unwrap() as Nanoseconds;
326 last_time = PreciseTime::now();
327 self.state.update(duration);
328 self.state.render(&mut self.canvas);
329 self.canvas.present();
332 if frame_count == FPS as u64 {
333 let duration = fps_time.to(PreciseTime::now()).num_nanoseconds().unwrap() as f64
335 println!("fps: {}", frame_count as f64 / duration);
337 fps_time = PreciseTime::now();
346 fn update(&mut self, dt: Nanoseconds);
347 fn render(&self, canvas: &mut Canvas<Window>);
349 fn on_event(&mut self, event: Event);
352 type Bollar = Vec<Box<dyn Boll>>;
354 pub struct ActiveState {
360 pub fn new() -> ActiveState {
362 bolls: Bollar::new(),
367 fn change_boll_count(&mut self, delta: i32) {
368 #[allow(clippy::comparison_chain)]
373 } else if delta < 0 {
374 for _i in 0..(-delta) {
380 fn add_boll(&mut self) {
381 let mut rng = rand::thread_rng();
382 self.bolls.push(Box::new(SquareBoll {
384 rng.gen_range(0, SCREEN_WIDTH) as f64,
385 rng.gen_range(0, SCREEN_HEIGHT) as f64
387 vel: point!(rng.gen_range(-2.0, 2.0), rng.gen_range(-2.0, 2.0)),
392 impl AppState for ActiveState {
393 fn update(&mut self, dt: Nanoseconds) {
394 for b in &mut self.bolls {
399 ns if ns < (NS_PER_FRAME - 90_0000) as u64 => self.change_boll_count(100),
400 ns if ns > (NS_PER_FRAME + 90_0000) as u64 => self.change_boll_count(-100),
405 fn render(&self, canvas: &mut Canvas<Window>) {
406 for b in &self.bolls {
407 b.draw(canvas, self.boll_size);
412 println!("number of bolls: {}", self.bolls.len());
415 fn on_event(&mut self, event: Event) {
418 keycode: Some(Keycode::KpPlus),
420 } => self.boll_size = std::cmp::min(self.boll_size + 1, 32),
422 keycode: Some(Keycode::KpMinus),
424 } => self.boll_size = std::cmp::max(self.boll_size - 1, 1),
425 Event::MouseMotion { x, y, .. } => self.bolls.push(Box::new(CircleBoll::new(
426 point!(x as f64, y as f64),