| 1 | use core::controller::ControllerManager; |
| 2 | use core::render::Renderer; |
| 3 | use geometry::{Dimension}; |
| 4 | use sdl2::event::{Event, WindowEvent}; |
| 5 | use sdl2::keyboard::Keycode; |
| 6 | use sdl2::video::SwapInterval; |
| 7 | use sdl2::{EventPump, VideoSubsystem}; |
| 8 | use sprites::SpriteManager; |
| 9 | use time::{Duration, Instant}; |
| 10 | |
| 11 | #[derive(Default)] |
| 12 | pub struct AppBuilder { |
| 13 | resolution: Dimension<u16>, |
| 14 | state: Option<Box<dyn AppState>>, |
| 15 | title: Option<String>, |
| 16 | } |
| 17 | |
| 18 | impl AppBuilder { |
| 19 | pub fn with_resolution(mut self, width: u16, height: u16) -> Self { |
| 20 | self.resolution = Dimension { width, height }; |
| 21 | self |
| 22 | } |
| 23 | |
| 24 | pub fn with_state(mut self, state: Box<dyn AppState>) -> Self { |
| 25 | self.state = Some(state); |
| 26 | self |
| 27 | } |
| 28 | |
| 29 | pub fn with_title(mut self, title: &str) -> Self { |
| 30 | self.title = Some(title.to_string()); |
| 31 | self |
| 32 | } |
| 33 | |
| 34 | pub fn build(self) -> Result<App, String> { |
| 35 | let context = sdl2::init().unwrap(); |
| 36 | sdl2::image::init(sdl2::image::InitFlag::PNG)?; |
| 37 | let video = context.video()?; |
| 38 | //self.print_video_display_modes(&video); |
| 39 | |
| 40 | let window = video |
| 41 | .window( |
| 42 | &self.title.unwrap(), |
| 43 | self.resolution.width.into(), |
| 44 | self.resolution.height.into(), |
| 45 | ) |
| 46 | .position_centered() |
| 47 | // .fullscreen() |
| 48 | // .fullscreen_desktop() |
| 49 | .opengl() |
| 50 | .build() |
| 51 | .unwrap(); |
| 52 | context.mouse().show_cursor(false); |
| 53 | |
| 54 | let canvas = window.into_canvas().build().unwrap(); |
| 55 | let sprites = SpriteManager::new(canvas.texture_creator()); |
| 56 | let renderer = Renderer::new(canvas); |
| 57 | |
| 58 | video.gl_set_swap_interval(SwapInterval::VSync)?; |
| 59 | |
| 60 | let event_pump = context.event_pump()?; |
| 61 | |
| 62 | Ok(App { |
| 63 | renderer, |
| 64 | event_pump, |
| 65 | sprites, |
| 66 | states: vec!(self.state.unwrap()), |
| 67 | ctrl_man: ControllerManager::new(context.game_controller()?, context.haptic()?), |
| 68 | }) |
| 69 | } |
| 70 | |
| 71 | #[allow(dead_code)] |
| 72 | fn print_video_display_modes(&self, video: &VideoSubsystem) { |
| 73 | println!("video subsystem: {:?}", video); |
| 74 | println!("current_video_driver: {:?}", video.current_video_driver()); |
| 75 | for display in 0..video.num_video_displays().unwrap() { |
| 76 | println!( |
| 77 | "=== display {} - {} ===", |
| 78 | display, |
| 79 | video.display_name(display).unwrap() |
| 80 | ); |
| 81 | println!( |
| 82 | " display_bounds: {:?}", |
| 83 | video.display_bounds(display).unwrap() |
| 84 | ); |
| 85 | println!( |
| 86 | " num_display_modes: {:?}", |
| 87 | video.num_display_modes(display).unwrap() |
| 88 | ); |
| 89 | println!( |
| 90 | " desktop_display_mode: {:?}", |
| 91 | video.desktop_display_mode(display).unwrap() |
| 92 | ); |
| 93 | let current = video.current_display_mode(display).unwrap(); |
| 94 | println!( |
| 95 | " current_display_mode: {:?}", |
| 96 | current |
| 97 | ); |
| 98 | for idx in 0..video.num_display_modes(display).unwrap() { |
| 99 | let mode = video.display_mode(display, idx).unwrap(); |
| 100 | println!( |
| 101 | " {}{:2}: {:?}", |
| 102 | if mode == current { "*" } else { " " }, |
| 103 | idx, |
| 104 | mode |
| 105 | ); |
| 106 | } |
| 107 | } |
| 108 | println!("swap interval: {:?}", video.gl_get_swap_interval()); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | pub struct App { |
| 113 | renderer: Renderer, |
| 114 | event_pump: EventPump, |
| 115 | sprites: SpriteManager, |
| 116 | states: Vec<Box<dyn AppState>>, |
| 117 | pub ctrl_man: ControllerManager, |
| 118 | } |
| 119 | |
| 120 | impl App { |
| 121 | #[allow(clippy::new_ret_no_self)] |
| 122 | pub fn new() -> AppBuilder { |
| 123 | Default::default() |
| 124 | } |
| 125 | |
| 126 | pub fn load_sprites(&mut self, sprites: &[(&str, &str)]) { |
| 127 | for (name, file) in sprites { |
| 128 | self.sprites.load(name, file); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | pub fn start(&mut self) { |
| 133 | let mut last_time = Instant::now(); |
| 134 | |
| 135 | self.states[0].enter(&self.ctrl_man); |
| 136 | |
| 137 | loop { |
| 138 | if let Some(change) = self.handle_events() { |
| 139 | self.handle_state_change(change); |
| 140 | } |
| 141 | |
| 142 | let duration = Instant::now() - last_time; |
| 143 | last_time = Instant::now(); |
| 144 | |
| 145 | self.ctrl_man.update(duration); |
| 146 | |
| 147 | if let Some(state) = self.states.last_mut() { |
| 148 | if let Some(change) = state.update(duration) { |
| 149 | self.handle_state_change(change); |
| 150 | } |
| 151 | } else { |
| 152 | break; |
| 153 | } |
| 154 | |
| 155 | self.render(); |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | fn handle_state_change(&mut self, change: StateChange) { |
| 160 | match change { |
| 161 | StateChange::Push(mut state) => { |
| 162 | // if let Some(s) = self.states.last_mut() { |
| 163 | // s.pause(); |
| 164 | // } |
| 165 | state.enter(&self.ctrl_man); |
| 166 | self.states.push(state); |
| 167 | } |
| 168 | StateChange::Pop => { |
| 169 | if let Some(mut s) = self.states.pop() { |
| 170 | s.leave(); |
| 171 | } |
| 172 | } |
| 173 | StateChange::Exit => { |
| 174 | while let Some(mut s) = self.states.pop() { |
| 175 | s.leave(); |
| 176 | } |
| 177 | } |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | fn handle_events(&mut self) -> Option<StateChange> { |
| 182 | for event in self.event_pump.poll_iter() { |
| 183 | self.ctrl_man.handle_event(&event); |
| 184 | match event { |
| 185 | Event::Quit { .. } |
| 186 | | Event::KeyDown { |
| 187 | keycode: Some(Keycode::Escape), |
| 188 | .. |
| 189 | } => { |
| 190 | return Some(StateChange::Pop) |
| 191 | } |
| 192 | Event::KeyDown { |
| 193 | keycode: Some(Keycode::F11), |
| 194 | .. |
| 195 | } => { |
| 196 | self.renderer.toggle_fullscreen(); |
| 197 | } |
| 198 | Event::Window { |
| 199 | win_event: WindowEvent::Resized(x, y), |
| 200 | .. |
| 201 | } => { |
| 202 | println!("window resized({}, {})", x, y) |
| 203 | } |
| 204 | Event::Window { |
| 205 | win_event: WindowEvent::Maximized, |
| 206 | .. |
| 207 | } => { |
| 208 | println!("window maximized") |
| 209 | } |
| 210 | Event::Window { |
| 211 | win_event: WindowEvent::Restored, |
| 212 | .. |
| 213 | } => { |
| 214 | println!("window restored") |
| 215 | } |
| 216 | Event::Window { |
| 217 | win_event: WindowEvent::Enter, |
| 218 | .. |
| 219 | } => { |
| 220 | println!("window enter") |
| 221 | } |
| 222 | Event::Window { |
| 223 | win_event: WindowEvent::Leave, |
| 224 | .. |
| 225 | } => { |
| 226 | println!("window leave") |
| 227 | } |
| 228 | Event::Window { |
| 229 | win_event: WindowEvent::FocusGained, |
| 230 | .. |
| 231 | } => { |
| 232 | println!("window focus gained") |
| 233 | } |
| 234 | Event::Window { |
| 235 | win_event: WindowEvent::FocusLost, |
| 236 | .. |
| 237 | } => { |
| 238 | println!("window focus lost") |
| 239 | } |
| 240 | _ => { |
| 241 | if let Some(state) = self.states.last_mut() { |
| 242 | if let Some(change) = state.handle_event(event) { |
| 243 | return Some(change); |
| 244 | } |
| 245 | } else { |
| 246 | return Some(StateChange::Exit) |
| 247 | } |
| 248 | }, |
| 249 | } |
| 250 | } |
| 251 | None |
| 252 | } |
| 253 | |
| 254 | fn render(&mut self) { |
| 255 | self.renderer.clear(); |
| 256 | self.states.last_mut().unwrap().render(&mut self.renderer, &self.sprites); |
| 257 | self.renderer.present(); |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | pub enum StateChange { |
| 262 | Push(Box<dyn AppState>), |
| 263 | Pop, |
| 264 | Exit, |
| 265 | } |
| 266 | |
| 267 | pub trait AppState { |
| 268 | fn enter(&mut self, ctrl_man: &ControllerManager); |
| 269 | fn leave(&mut self); |
| 270 | fn update(&mut self, dt: Duration) -> Option<StateChange>; |
| 271 | fn render(&mut self, renderer: &mut Renderer, sprites: &SpriteManager); |
| 272 | fn handle_event(&mut self, event: Event) -> Option<StateChange>; |
| 273 | } |