| 1 | use boll::*; |
| 2 | use core::controller::ControllerManager; |
| 3 | use core::render::Renderer; |
| 4 | use geometry::{Point, Dimension}; |
| 5 | use point; |
| 6 | use rand::Rng; |
| 7 | use sdl2::event::{Event, WindowEvent}; |
| 8 | use sdl2::keyboard::Keycode; |
| 9 | use sdl2::rect::Rect as SDLRect; |
| 10 | use sdl2::video::SwapInterval; |
| 11 | use sdl2::{EventPump, VideoSubsystem}; |
| 12 | use sprites::SpriteManager; |
| 13 | use std::f32::consts::PI; |
| 14 | use time::{Duration, Instant, prelude::*}; |
| 15 | |
| 16 | const FPS: u32 = 60; |
| 17 | const NS_PER_FRAME: u32 = 1_000_000_000 / FPS; |
| 18 | |
| 19 | #[derive(Default)] |
| 20 | pub struct AppBuilder { |
| 21 | resolution: Dimension<u16>, |
| 22 | state: Option<Box<dyn AppState>>, |
| 23 | title: Option<String>, |
| 24 | } |
| 25 | |
| 26 | impl AppBuilder { |
| 27 | pub fn with_resolution(mut self, width: u16, height: u16) -> Self { |
| 28 | self.resolution = Dimension { width, height }; |
| 29 | self |
| 30 | } |
| 31 | |
| 32 | pub fn with_state(mut self, state: Box<dyn AppState>) -> Self { |
| 33 | self.state = Some(state); |
| 34 | self |
| 35 | } |
| 36 | |
| 37 | pub fn with_title(mut self, title: &str) -> Self { |
| 38 | self.title = Some(title.to_string()); |
| 39 | self |
| 40 | } |
| 41 | |
| 42 | pub fn build(self) -> Result<App, String> { |
| 43 | let context = sdl2::init().unwrap(); |
| 44 | sdl2::image::init(sdl2::image::InitFlag::PNG)?; |
| 45 | let video = context.video()?; |
| 46 | //self.print_video_display_modes(&video); |
| 47 | |
| 48 | let window = video |
| 49 | .window( |
| 50 | &self.title.unwrap(), |
| 51 | self.resolution.width.into(), |
| 52 | self.resolution.height.into(), |
| 53 | ) |
| 54 | .position_centered() |
| 55 | // .fullscreen() |
| 56 | // .fullscreen_desktop() |
| 57 | .opengl() |
| 58 | .build() |
| 59 | .unwrap(); |
| 60 | context.mouse().show_cursor(false); |
| 61 | |
| 62 | let canvas = window.into_canvas().build().unwrap(); |
| 63 | let sprites = SpriteManager::new(canvas.texture_creator()); |
| 64 | let screen = canvas.output_size().unwrap(); |
| 65 | let renderer = Renderer::new(canvas); |
| 66 | |
| 67 | video.gl_set_swap_interval(SwapInterval::VSync)?; |
| 68 | |
| 69 | let event_pump = context.event_pump()?; |
| 70 | |
| 71 | Ok(App { |
| 72 | renderer, |
| 73 | event_pump, |
| 74 | sprites, |
| 75 | states: vec!(self.state.unwrap_or_else(|| Box::new(ActiveState::new(screen)))), |
| 76 | ctrl_man: ControllerManager::new(context.game_controller()?, context.haptic()?), |
| 77 | }) |
| 78 | } |
| 79 | |
| 80 | #[allow(dead_code)] |
| 81 | fn print_video_display_modes(&self, video: &VideoSubsystem) { |
| 82 | println!("video subsystem: {:?}", video); |
| 83 | println!("current_video_driver: {:?}", video.current_video_driver()); |
| 84 | for display in 0..video.num_video_displays().unwrap() { |
| 85 | println!( |
| 86 | "=== display {} - {} ===", |
| 87 | display, |
| 88 | video.display_name(display).unwrap() |
| 89 | ); |
| 90 | println!( |
| 91 | " display_bounds: {:?}", |
| 92 | video.display_bounds(display).unwrap() |
| 93 | ); |
| 94 | println!( |
| 95 | " num_display_modes: {:?}", |
| 96 | video.num_display_modes(display).unwrap() |
| 97 | ); |
| 98 | println!( |
| 99 | " desktop_display_mode: {:?}", |
| 100 | video.desktop_display_mode(display).unwrap() |
| 101 | ); |
| 102 | let current = video.current_display_mode(display).unwrap(); |
| 103 | println!( |
| 104 | " current_display_mode: {:?}", |
| 105 | current |
| 106 | ); |
| 107 | for idx in 0..video.num_display_modes(display).unwrap() { |
| 108 | let mode = video.display_mode(display, idx).unwrap(); |
| 109 | println!( |
| 110 | " {}{:2}: {:?}", |
| 111 | if mode == current { "*" } else { " " }, |
| 112 | idx, |
| 113 | mode |
| 114 | ); |
| 115 | } |
| 116 | } |
| 117 | println!("swap interval: {:?}", video.gl_get_swap_interval()); |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | pub struct App { |
| 122 | renderer: Renderer, |
| 123 | event_pump: EventPump, |
| 124 | sprites: SpriteManager, |
| 125 | states: Vec<Box<dyn AppState>>, |
| 126 | pub ctrl_man: ControllerManager, |
| 127 | } |
| 128 | |
| 129 | impl App { |
| 130 | #[allow(clippy::new_ret_no_self)] |
| 131 | pub fn new() -> AppBuilder { |
| 132 | Default::default() |
| 133 | } |
| 134 | |
| 135 | pub fn load_sprites(&mut self, sprites: &[(&str, &str)]) { |
| 136 | for (name, file) in sprites { |
| 137 | self.sprites.load(name, file); |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | pub fn start(&mut self) { |
| 142 | let mut last_time = Instant::now(); |
| 143 | |
| 144 | self.states[0].enter(&self.ctrl_man); |
| 145 | |
| 146 | loop { |
| 147 | if let Some(change) = self.handle_events() { |
| 148 | self.handle_state_change(change); |
| 149 | } |
| 150 | |
| 151 | let duration = Instant::now() - last_time; |
| 152 | last_time = Instant::now(); |
| 153 | |
| 154 | self.ctrl_man.update(duration); |
| 155 | |
| 156 | if let Some(state) = self.states.last_mut() { |
| 157 | if let Some(change) = state.update(duration) { |
| 158 | self.handle_state_change(change); |
| 159 | } |
| 160 | } else { |
| 161 | break; |
| 162 | } |
| 163 | |
| 164 | self.render(); |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | fn handle_state_change(&mut self, change: StateChange) { |
| 169 | match change { |
| 170 | StateChange::Push(mut state) => { |
| 171 | // if let Some(s) = self.states.last_mut() { |
| 172 | // s.pause(); |
| 173 | // } |
| 174 | state.enter(&self.ctrl_man); |
| 175 | self.states.push(state); |
| 176 | } |
| 177 | StateChange::Pop => { |
| 178 | if let Some(mut s) = self.states.pop() { |
| 179 | s.leave(); |
| 180 | } |
| 181 | } |
| 182 | StateChange::Exit => { |
| 183 | while let Some(mut s) = self.states.pop() { |
| 184 | s.leave(); |
| 185 | } |
| 186 | } |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | fn handle_events(&mut self) -> Option<StateChange> { |
| 191 | for event in self.event_pump.poll_iter() { |
| 192 | self.ctrl_man.handle_event(&event); |
| 193 | match event { |
| 194 | Event::Quit { .. } |
| 195 | | Event::KeyDown { |
| 196 | keycode: Some(Keycode::Escape), |
| 197 | .. |
| 198 | } => { |
| 199 | return Some(StateChange::Pop) |
| 200 | } |
| 201 | Event::KeyDown { |
| 202 | keycode: Some(Keycode::F11), |
| 203 | .. |
| 204 | } => { |
| 205 | self.renderer.toggle_fullscreen(); |
| 206 | } |
| 207 | Event::Window { |
| 208 | win_event: WindowEvent::Resized(x, y), |
| 209 | .. |
| 210 | } => { |
| 211 | println!("window resized({}, {})", x, y) |
| 212 | } |
| 213 | Event::Window { |
| 214 | win_event: WindowEvent::Maximized, |
| 215 | .. |
| 216 | } => { |
| 217 | println!("window maximized") |
| 218 | } |
| 219 | Event::Window { |
| 220 | win_event: WindowEvent::Restored, |
| 221 | .. |
| 222 | } => { |
| 223 | println!("window restored") |
| 224 | } |
| 225 | Event::Window { |
| 226 | win_event: WindowEvent::Enter, |
| 227 | .. |
| 228 | } => { |
| 229 | println!("window enter") |
| 230 | } |
| 231 | Event::Window { |
| 232 | win_event: WindowEvent::Leave, |
| 233 | .. |
| 234 | } => { |
| 235 | println!("window leave") |
| 236 | } |
| 237 | Event::Window { |
| 238 | win_event: WindowEvent::FocusGained, |
| 239 | .. |
| 240 | } => { |
| 241 | println!("window focus gained") |
| 242 | } |
| 243 | Event::Window { |
| 244 | win_event: WindowEvent::FocusLost, |
| 245 | .. |
| 246 | } => { |
| 247 | println!("window focus lost") |
| 248 | } |
| 249 | _ => { |
| 250 | if let Some(state) = self.states.last_mut() { |
| 251 | if let Some(change) = state.handle_event(event) { |
| 252 | return Some(change); |
| 253 | } |
| 254 | } else { |
| 255 | return Some(StateChange::Exit) |
| 256 | } |
| 257 | }, |
| 258 | } |
| 259 | } |
| 260 | None |
| 261 | } |
| 262 | |
| 263 | fn render(&mut self) { |
| 264 | self.renderer.clear(); |
| 265 | self.states.last_mut().unwrap().render(&mut self.renderer, &self.sprites); |
| 266 | self.renderer.present(); |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | pub enum StateChange { |
| 271 | Push(Box<dyn AppState>), |
| 272 | Pop, |
| 273 | Exit, |
| 274 | } |
| 275 | |
| 276 | pub trait AppState { |
| 277 | fn enter(&mut self, ctrl_man: &ControllerManager); |
| 278 | fn leave(&mut self); |
| 279 | fn update(&mut self, dt: Duration) -> Option<StateChange>; |
| 280 | fn render(&mut self, renderer: &mut Renderer, sprites: &SpriteManager); |
| 281 | fn handle_event(&mut self, event: Event) -> Option<StateChange>; |
| 282 | } |
| 283 | |
| 284 | type Bollar = Vec<Box<dyn Boll>>; |
| 285 | |
| 286 | #[derive(Default)] |
| 287 | pub struct ActiveState { |
| 288 | screen: Dimension<u32>, |
| 289 | bolls: Bollar, |
| 290 | boll_size: u32, |
| 291 | mario_angle: f64, |
| 292 | } |
| 293 | |
| 294 | impl ActiveState { |
| 295 | pub fn new(screen: (u32, u32)) -> ActiveState { |
| 296 | ActiveState { |
| 297 | bolls: Bollar::new(), |
| 298 | boll_size: 1, |
| 299 | screen: Dimension::from(screen), |
| 300 | ..Default::default() |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | fn change_boll_count(&mut self, delta: i32) { |
| 305 | #[allow(clippy::comparison_chain)] |
| 306 | if delta > 0 { |
| 307 | for _i in 0..delta { |
| 308 | self.add_boll(); |
| 309 | } |
| 310 | } else if delta < 0 { |
| 311 | for _i in 0..(-delta) { |
| 312 | self.bolls.pop(); |
| 313 | } |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | fn add_boll(&mut self) { |
| 318 | let mut rng = rand::thread_rng(); |
| 319 | self.bolls.push(Box::new(SquareBoll { |
| 320 | pos: point!( |
| 321 | rng.gen_range(0, self.screen.width) as f64, |
| 322 | rng.gen_range(0, self.screen.height) as f64 |
| 323 | ), |
| 324 | vel: point!(rng.gen_range(-2.0, 2.0), rng.gen_range(-2.0, 2.0)), |
| 325 | })); |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | impl AppState for ActiveState { |
| 330 | fn enter(&mut self, _ctrl_man: &ControllerManager) {} |
| 331 | |
| 332 | fn update(&mut self, dt: Duration) -> Option<StateChange> { |
| 333 | for b in &mut self.bolls { |
| 334 | b.update(); |
| 335 | } |
| 336 | |
| 337 | match dt { |
| 338 | ns if ns < (NS_PER_FRAME - 90_0000).nanoseconds() => self.change_boll_count(100), |
| 339 | ns if ns > (NS_PER_FRAME + 90_0000).nanoseconds() => self.change_boll_count(-100), |
| 340 | _ => {} |
| 341 | } |
| 342 | |
| 343 | None |
| 344 | } |
| 345 | |
| 346 | fn render(&mut self, renderer: &mut Renderer, sprites: &SpriteManager) { |
| 347 | /* draw square of blocks */ { |
| 348 | let blocks = 20; |
| 349 | let size = 32; |
| 350 | let offset = point!( |
| 351 | (self.screen.width as i32 - (blocks + 1) * size) / 2, |
| 352 | (self.screen.height as i32 - (blocks + 1) * size) / 2 |
| 353 | ); |
| 354 | let block = sprites.get("block"); |
| 355 | for i in 0..blocks { |
| 356 | renderer |
| 357 | .blit( |
| 358 | block, |
| 359 | None, |
| 360 | SDLRect::new((i) * size + offset.x, offset.y, size as u32, size as u32), |
| 361 | ); |
| 362 | renderer |
| 363 | .blit( |
| 364 | block, |
| 365 | None, |
| 366 | SDLRect::new( |
| 367 | (blocks - i) * size + offset.x, |
| 368 | (blocks) * size + offset.y, |
| 369 | size as u32, |
| 370 | size as u32, |
| 371 | ), |
| 372 | ); |
| 373 | renderer |
| 374 | .blit( |
| 375 | block, |
| 376 | None, |
| 377 | SDLRect::new( |
| 378 | offset.x, |
| 379 | (blocks - i) * size + offset.y, |
| 380 | size as u32, |
| 381 | size as u32, |
| 382 | ), |
| 383 | ); |
| 384 | renderer |
| 385 | .blit( |
| 386 | block, |
| 387 | None, |
| 388 | SDLRect::new( |
| 389 | (blocks) * size + offset.x, |
| 390 | (i) * size + offset.y, |
| 391 | size as u32, |
| 392 | size as u32, |
| 393 | ), |
| 394 | ); |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | /* draw mario */ { |
| 399 | let size = 64; |
| 400 | let offset = point!( |
| 401 | (self.screen.width as i32 - size) / 2, |
| 402 | (self.screen.height as i32 - size) / 2 |
| 403 | ); |
| 404 | let radius = 110.0 + size as f32 * 0.5; |
| 405 | let angle = (self.mario_angle as f32 - 90.0) * PI / 180.0; |
| 406 | let offset2 = point!((angle.cos() * radius) as i32, (angle.sin() * radius) as i32); |
| 407 | renderer |
| 408 | .blit_ex( |
| 409 | sprites.get("mario"), |
| 410 | None, |
| 411 | SDLRect::new( |
| 412 | offset.x + offset2.x, |
| 413 | offset.y + offset2.y, |
| 414 | size as u32, |
| 415 | size as u32, |
| 416 | ), |
| 417 | self.mario_angle, |
| 418 | sdl2::rect::Point::new(size / 2, size / 2), |
| 419 | false, |
| 420 | false, |
| 421 | ); |
| 422 | self.mario_angle = (self.mario_angle + 1.0) % 360.0; |
| 423 | } |
| 424 | |
| 425 | /* draw circles and ellipses*/ { |
| 426 | let p = point!((self.screen.width / 2) as i16, (self.screen.height / 2) as i16); |
| 427 | renderer.circle(p, 100, (255, 255, 255)); |
| 428 | renderer.circle(p, 110, (255, 255, 255)); |
| 429 | renderer.ellipse(p, (50, 100), (255, 255, 255)); |
| 430 | renderer.ellipse(p, (110, 55), (255, 255, 255)); |
| 431 | } |
| 432 | |
| 433 | for b in &self.bolls { |
| 434 | b.draw(renderer, self.boll_size); |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | fn leave(&mut self) { |
| 439 | println!("number of bolls: {}", self.bolls.len()); |
| 440 | } |
| 441 | |
| 442 | fn handle_event(&mut self, event: Event) -> Option<StateChange> { |
| 443 | match event { |
| 444 | Event::KeyDown { |
| 445 | keycode: Some(Keycode::KpPlus), |
| 446 | .. |
| 447 | } => self.boll_size = std::cmp::min(self.boll_size + 1, 32), |
| 448 | Event::KeyDown { |
| 449 | keycode: Some(Keycode::KpMinus), |
| 450 | .. |
| 451 | } => self.boll_size = std::cmp::max(self.boll_size - 1, 1), |
| 452 | Event::MouseMotion { x, y, .. } => self.bolls.push(Box::new(CircleBoll::new( |
| 453 | point!(x as f64, y as f64), |
| 454 | point!(0.0, 0.0), |
| 455 | ))), |
| 456 | _ => {} |
| 457 | } |
| 458 | None |
| 459 | } |
| 460 | } |