Commit | Line | Data |
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6ba7aef1 TW |
1 | use boll::*; |
2 | use common::{Point2D, Rect}; | |
3 | use point; // defined in common, but loaded from main... | |
95e3e10d TW |
4 | use rand::Rng; |
5 | use sdl2::event::Event; | |
6ba7aef1 TW |
6 | use sdl2::event::WindowEvent; |
7 | use sdl2::gfx::primitives::DrawRenderer; | |
95e3e10d | 8 | use sdl2::keyboard::Keycode; |
3bfea951 | 9 | use sdl2::pixels::Color; |
6ba7aef1 | 10 | use sdl2::rect::Rect as SDLRect; |
3bfea951 TW |
11 | use sdl2::render::BlendMode; |
12 | use sdl2::render::Canvas; | |
6ba7aef1 | 13 | use sdl2::video::FullscreenType; |
fea68d56 | 14 | use sdl2::video::{SwapInterval, Window}; |
6ba7aef1 | 15 | use sdl2::{EventPump, VideoSubsystem}; |
3bfea951 | 16 | use sprites::SpriteManager; |
6ba7aef1 TW |
17 | use std::f32::consts::PI; |
18 | use time::PreciseTime; | |
19 | use {SCREEN_HEIGHT, SCREEN_WIDTH}; | |
95e3e10d TW |
20 | |
21 | pub type Nanoseconds = u64; | |
3bfea951 | 22 | |
6ba7aef1 TW |
23 | const FPS: u32 = 60; |
24 | const NS_PER_FRAME: u32 = 1_000_000_000 / FPS; | |
25 | ||
6edafdc0 TW |
26 | #[derive(Default)] |
27 | pub struct AppBuilder { | |
28 | resolution: Rect<u16>, | |
6edafdc0 TW |
29 | state: Option<Box<dyn AppState>>, |
30 | title: Option<String>, | |
3bfea951 TW |
31 | } |
32 | ||
6edafdc0 TW |
33 | impl AppBuilder { |
34 | pub fn with_resolution(mut self, width: u16, height: u16) -> Self { | |
6ba7aef1 TW |
35 | self.resolution = Rect { width, height }; |
36 | self | |
6edafdc0 TW |
37 | } |
38 | ||
6edafdc0 | 39 | pub fn with_state(mut self, state: Box<dyn AppState>) -> Self { |
6ba7aef1 TW |
40 | self.state = Some(state); |
41 | self | |
6edafdc0 TW |
42 | } |
43 | ||
44 | pub fn with_title(mut self, title: &str) -> Self { | |
6ba7aef1 TW |
45 | self.title = Some(title.to_string()); |
46 | self | |
6edafdc0 TW |
47 | } |
48 | ||
fea68d56 | 49 | pub fn build(self) -> Result<App, String> { |
3bfea951 | 50 | let context = sdl2::init().unwrap(); |
fea68d56 | 51 | sdl2::image::init(sdl2::image::InitFlag::PNG)?; |
6ba7aef1 | 52 | let video = context.video()?; |
fea68d56 | 53 | |
6ba7aef1 | 54 | self.print_video_display_modes(&video); |
fea68d56 TW |
55 | |
56 | let window = video | |
6ba7aef1 TW |
57 | .window( |
58 | &self.title.unwrap(), | |
59 | self.resolution.width.into(), | |
60 | self.resolution.height.into(), | |
61 | ) | |
3bfea951 | 62 | .position_centered() |
6ba7aef1 TW |
63 | // .fullscreen() |
64 | // .fullscreen_desktop() | |
3bfea951 | 65 | .opengl() |
6ba7aef1 TW |
66 | .build() |
67 | .unwrap(); | |
3bfea951 | 68 | context.mouse().show_cursor(false); |
6edafdc0 | 69 | |
3bfea951 TW |
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)); | |
73 | canvas.clear(); | |
74 | canvas.present(); | |
6edafdc0 | 75 | |
6ba7aef1 | 76 | video.gl_set_swap_interval(SwapInterval::VSync)?; |
fea68d56 TW |
77 | |
78 | let event_pump = context.event_pump()?; | |
3bfea951 | 79 | let sprites = SpriteManager::new(canvas.texture_creator()); |
6edafdc0 | 80 | |
fea68d56 | 81 | Ok(App { |
3bfea951 TW |
82 | canvas, |
83 | event_pump, | |
84 | sprites, | |
6edafdc0 | 85 | state: self.state.unwrap_or(Box::new(ActiveState::new())), |
fea68d56 TW |
86 | }) |
87 | } | |
88 | ||
89 | fn print_video_display_modes(&self, video: &VideoSubsystem) { | |
6ba7aef1 TW |
90 | println!("video subsystem: {:?}", video); |
91 | println!("current_video_driver: {:?}", video.current_video_driver()); | |
92 | for display in 0..video.num_video_displays().unwrap() { | |
93 | println!( | |
94 | "=== display {} - {} ===", | |
95 | display, | |
96 | video.display_name(display).unwrap() | |
97 | ); | |
98 | println!( | |
99 | " display_bounds: {:?}", | |
100 | video.display_bounds(display).unwrap() | |
101 | ); | |
102 | println!( | |
103 | " num_display_modes: {:?}", | |
104 | video.num_display_modes(display).unwrap() | |
105 | ); | |
106 | println!( | |
107 | " desktop_display_mode: {:?}", | |
108 | video.desktop_display_mode(display).unwrap() | |
109 | ); | |
110 | println!( | |
111 | " current_display_mode: {:?}", | |
112 | video.current_display_mode(display).unwrap() | |
113 | ); | |
114 | for mode in 0..video.num_display_modes(display).unwrap() { | |
115 | println!( | |
116 | " {:2}: {:?}", | |
117 | mode, | |
118 | video.display_mode(display, mode).unwrap() | |
119 | ); | |
120 | } | |
121 | } | |
122 | println!("swap interval: {:?}", video.gl_get_swap_interval()); | |
3bfea951 | 123 | } |
6edafdc0 TW |
124 | } |
125 | ||
126 | pub struct App { | |
127 | pub canvas: Canvas<Window>, | |
128 | pub event_pump: EventPump, | |
129 | pub sprites: SpriteManager, | |
130 | pub state: Box<dyn AppState>, | |
131 | } | |
132 | ||
133 | impl App { | |
134 | pub fn new() -> AppBuilder { | |
6ba7aef1 | 135 | Default::default() |
6edafdc0 | 136 | } |
3bfea951 | 137 | |
1e322944 | 138 | pub fn load_sprites(&mut self, sprites: &[(&str, &str)]) { |
3bfea951 TW |
139 | for (name, file) in sprites { |
140 | self.sprites.load(name, file); | |
141 | } | |
142 | } | |
6ba7aef1 TW |
143 | |
144 | pub fn start(&mut self) { | |
145 | let mut frame_count: u64 = 0; | |
146 | let mut fps_time = PreciseTime::now(); | |
147 | let mut last_time = PreciseTime::now(); | |
148 | ||
149 | let mut mario_angle = 0.0; | |
150 | ||
151 | 'running: loop { | |
152 | self.canvas.set_draw_color(Color::RGB(0, 0, 0)); | |
153 | self.canvas.clear(); | |
154 | { | |
155 | let blocks = 20; | |
156 | let size = 32; | |
157 | let offset = point!( | |
158 | (SCREEN_WIDTH as i32 - (blocks + 1) * size) / 2, | |
159 | (SCREEN_HEIGHT as i32 - (blocks + 1) * size) / 2 | |
160 | ); | |
161 | let block = self.sprites.get("block"); | |
162 | for i in 0..blocks { | |
163 | self.canvas | |
164 | .copy( | |
165 | block, | |
166 | None, | |
167 | SDLRect::new((i) * size + offset.x, offset.y, size as u32, size as u32), | |
168 | ) | |
169 | .unwrap(); | |
170 | self.canvas | |
171 | .copy( | |
172 | block, | |
173 | None, | |
174 | SDLRect::new( | |
175 | (blocks - i) * size + offset.x, | |
176 | (blocks) * size + offset.y, | |
177 | size as u32, | |
178 | size as u32, | |
179 | ), | |
180 | ) | |
181 | .unwrap(); | |
182 | self.canvas | |
183 | .copy( | |
184 | block, | |
185 | None, | |
186 | SDLRect::new( | |
187 | offset.x, | |
188 | (blocks - i) * size + offset.y, | |
189 | size as u32, | |
190 | size as u32, | |
191 | ), | |
192 | ) | |
193 | .unwrap(); | |
194 | self.canvas | |
195 | .copy( | |
196 | block, | |
197 | None, | |
198 | SDLRect::new( | |
199 | (blocks) * size + offset.x, | |
200 | (i) * size + offset.y, | |
201 | size as u32, | |
202 | size as u32, | |
203 | ), | |
204 | ) | |
205 | .unwrap(); | |
206 | } | |
207 | } | |
208 | { | |
209 | let size = 64; | |
210 | let offset = point!( | |
211 | (SCREEN_WIDTH as i32 - size) / 2, | |
212 | (SCREEN_HEIGHT as i32 - size) / 2 | |
213 | ); | |
214 | let radius = 110.0 + size as f32 * 0.5; | |
215 | let angle = (mario_angle as f32 - 90.0) * PI / 180.0; | |
216 | let offset2 = point!((angle.cos() * radius) as i32, (angle.sin() * radius) as i32); | |
217 | self.canvas | |
218 | .copy_ex( | |
219 | self.sprites.get("mario"), | |
220 | None, | |
221 | SDLRect::new( | |
222 | offset.x + offset2.x, | |
223 | offset.y + offset2.y, | |
224 | size as u32, | |
225 | size as u32, | |
226 | ), | |
227 | mario_angle, | |
228 | sdl2::rect::Point::new(size / 2, size / 2), | |
229 | false, | |
230 | false, | |
231 | ) | |
232 | .unwrap(); | |
233 | mario_angle += 1.0; | |
234 | if mario_angle >= 360.0 { | |
235 | mario_angle -= 360.0 | |
236 | } | |
237 | } | |
238 | { | |
239 | let p = point!((SCREEN_WIDTH / 2) as i16, (SCREEN_HEIGHT / 2) as i16); | |
240 | self.canvas | |
241 | .circle(p.x, p.y, 100, Color::RGB(255, 255, 255)) | |
242 | .unwrap(); | |
243 | self.canvas | |
244 | .aa_circle(p.x, p.y, 110, Color::RGB(255, 255, 255)) | |
245 | .unwrap(); | |
246 | self.canvas | |
247 | .ellipse(p.x, p.y, 50, 100, Color::RGB(255, 255, 255)) | |
248 | .unwrap(); | |
249 | self.canvas | |
250 | .aa_ellipse(p.x, p.y, 110, 55, Color::RGB(255, 255, 255)) | |
251 | .unwrap(); | |
252 | } | |
253 | ||
254 | // window.gl_swap_window(); | |
255 | for event in self.event_pump.poll_iter() { | |
256 | match event { | |
257 | Event::Quit { .. } | |
258 | | Event::KeyDown { | |
259 | keycode: Some(Keycode::Escape), | |
260 | .. | |
261 | } => { | |
262 | break 'running; | |
263 | } | |
264 | Event::KeyDown { | |
265 | keycode: Some(Keycode::F11), | |
266 | .. | |
267 | } => { | |
268 | match self.canvas.window().fullscreen_state() { | |
269 | FullscreenType::Off => self | |
270 | .canvas | |
271 | .window_mut() | |
272 | .set_fullscreen(FullscreenType::Desktop), | |
273 | _ => self.canvas.window_mut().set_fullscreen(FullscreenType::Off), | |
274 | } | |
275 | .unwrap(); | |
276 | } | |
277 | Event::Window { | |
278 | win_event: WindowEvent::Resized(x, y), | |
279 | .. | |
280 | } => { | |
281 | println!("window resized({}, {})", x, y) | |
282 | } | |
283 | Event::Window { | |
284 | win_event: WindowEvent::Maximized, | |
285 | .. | |
286 | } => { | |
287 | println!("window maximized") | |
288 | } | |
289 | Event::Window { | |
290 | win_event: WindowEvent::Restored, | |
291 | .. | |
292 | } => { | |
293 | println!("window restored") | |
294 | } | |
295 | Event::Window { | |
296 | win_event: WindowEvent::Enter, | |
297 | .. | |
298 | } => { | |
299 | println!("window enter") | |
300 | } | |
301 | Event::Window { | |
302 | win_event: WindowEvent::Leave, | |
303 | .. | |
304 | } => { | |
305 | println!("window leave") | |
306 | } | |
307 | Event::Window { | |
308 | win_event: WindowEvent::FocusGained, | |
309 | .. | |
310 | } => { | |
311 | println!("window focus gained") | |
312 | } | |
313 | Event::Window { | |
314 | win_event: WindowEvent::FocusLost, | |
315 | .. | |
316 | } => { | |
317 | println!("window focus lost") | |
318 | } | |
319 | _ => self.state.on_event(event), | |
320 | } | |
321 | } | |
322 | ||
323 | let duration = | |
324 | last_time.to(PreciseTime::now()).num_nanoseconds().unwrap() as Nanoseconds; | |
325 | last_time = PreciseTime::now(); | |
326 | self.state.update(duration); | |
327 | self.state.render(&mut self.canvas); | |
328 | self.canvas.present(); | |
329 | ||
330 | frame_count += 1; | |
331 | if frame_count == FPS as u64 { | |
332 | let duration = fps_time.to(PreciseTime::now()).num_nanoseconds().unwrap() as f64 | |
333 | / 1_000_000_000.0; | |
334 | println!("fps: {}", frame_count as f64 / duration); | |
335 | frame_count = 0; | |
336 | fps_time = PreciseTime::now(); | |
337 | } | |
338 | } | |
339 | ||
340 | self.state.leave(); | |
341 | } | |
3bfea951 | 342 | } |
95e3e10d TW |
343 | |
344 | pub trait AppState { | |
345 | fn update(&mut self, dt: Nanoseconds); | |
346 | fn render(&self, canvas: &mut Canvas<Window>); | |
347 | fn leave(&self); | |
348 | fn on_event(&mut self, event: Event); | |
349 | } | |
350 | ||
351 | type Bollar = Vec<Box<dyn Boll>>; | |
352 | ||
353 | pub struct ActiveState { | |
354 | bolls: Bollar, | |
355 | boll_size: u32, | |
356 | } | |
357 | ||
358 | impl ActiveState { | |
6edafdc0 | 359 | pub fn new() -> ActiveState { |
95e3e10d TW |
360 | ActiveState { |
361 | bolls: Bollar::new(), | |
362 | boll_size: 1, | |
363 | } | |
364 | } | |
365 | ||
366 | fn change_boll_count(&mut self, delta: i32) { | |
367 | if delta > 0 { | |
368 | for _i in 0..delta { | |
369 | self.add_boll(); | |
370 | } | |
371 | } else if delta < 0 { | |
5cbbebbe | 372 | for _i in 0..(-delta) { |
95e3e10d TW |
373 | self.bolls.pop(); |
374 | } | |
375 | } | |
376 | } | |
377 | ||
378 | fn add_boll(&mut self) { | |
379 | let mut rng = rand::thread_rng(); | |
380 | self.bolls.push(Box::new(SquareBoll { | |
6ba7aef1 TW |
381 | pos: point!( |
382 | rng.gen_range(0, SCREEN_WIDTH) as f64, | |
383 | rng.gen_range(0, SCREEN_HEIGHT) as f64 | |
384 | ), | |
95e3e10d TW |
385 | vel: point!(rng.gen_range(-2.0, 2.0), rng.gen_range(-2.0, 2.0)), |
386 | })); | |
387 | } | |
388 | } | |
389 | ||
390 | impl AppState for ActiveState { | |
391 | fn update(&mut self, dt: Nanoseconds) { | |
93679b27 | 392 | for b in &mut self.bolls { |
95e3e10d TW |
393 | b.update(); |
394 | } | |
395 | ||
396 | match dt { | |
6ba7aef1 TW |
397 | ns if ns < (NS_PER_FRAME - 90_0000) as u64 => self.change_boll_count(100), |
398 | ns if ns > (NS_PER_FRAME + 90_0000) as u64 => self.change_boll_count(-100), | |
95e3e10d TW |
399 | _ => {} |
400 | } | |
401 | } | |
402 | ||
403 | fn render(&self, canvas: &mut Canvas<Window>) { | |
93679b27 | 404 | for b in &self.bolls { |
95e3e10d TW |
405 | b.draw(canvas, self.boll_size); |
406 | } | |
407 | } | |
408 | ||
409 | fn leave(&self) { | |
410 | println!("number of bolls: {}", self.bolls.len()); | |
411 | } | |
412 | ||
413 | fn on_event(&mut self, event: Event) { | |
414 | match event { | |
6ba7aef1 TW |
415 | Event::KeyDown { |
416 | keycode: Some(Keycode::KpPlus), | |
417 | .. | |
418 | } => self.boll_size = std::cmp::min(self.boll_size + 1, 32), | |
419 | Event::KeyDown { | |
420 | keycode: Some(Keycode::KpMinus), | |
421 | .. | |
422 | } => self.boll_size = std::cmp::max(self.boll_size - 1, 1), | |
423 | Event::MouseMotion { x, y, .. } => self.bolls.push(Box::new(CircleBoll::new( | |
424 | point!(x as f64, y as f64), | |
425 | point!(0.0, 0.0), | |
426 | ))), | |
95e3e10d TW |
427 | _ => {} |
428 | } | |
429 | } | |
430 | } |