├── .gitignore ├── Cargo.toml ├── LICENSE ├── README.md └── src └── main.rs /.gitignore: -------------------------------------------------------------------------------- 1 | /target 2 | -------------------------------------------------------------------------------- /Cargo.toml: -------------------------------------------------------------------------------- 1 | [package] 2 | name = "rusty_pong" 3 | version = "0.1.0" 4 | authors = ["TanTanDev"] 5 | edition = "2018" 6 | 7 | # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html 8 | 9 | [dependencies] 10 | ggez = "0.5.1" 11 | rand = "0.7.3" 12 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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2 | use ggez::event; 3 | use ggez::graphics; 4 | use ggez::input::keyboard::{self, KeyCode}; 5 | use ggez::nalgebra as na; 6 | use ggez::{Context, GameResult}; 7 | use rand::{self, thread_rng, Rng}; 8 | 9 | const PADDING: f32 = 40.0; 10 | const MIDDLE_LINE_W: f32 = 2.0; 11 | const RACKET_HEIGHT: f32 = 100.0; 12 | const RACKET_WIDTH: f32 = 20.0; 13 | const RACKET_WIDTH_HALF: f32 = RACKET_WIDTH * 0.5; 14 | const RACKET_HEIGHT_HALF: f32 = RACKET_HEIGHT * 0.5; 15 | const BALL_SIZE: f32 = 30.0; 16 | const BALL_SIZE_HALF: f32 = BALL_SIZE * 0.5; 17 | const PLAYER_SPEED: f32 = 600.0; 18 | const BALL_SPEED: f32 = 500.0; 19 | 20 | fn clamp(value: &mut f32, low: f32, high: f32) { 21 | if *value < low { 22 | *value = low; 23 | } else if *value > high { 24 | *value = high; 25 | } 26 | } 27 | 28 | fn move_racket(pos: &mut na::Point2, keycode: KeyCode, y_dir: f32, ctx: &mut Context) { 29 | let dt = ggez::timer::delta(ctx).as_secs_f32(); 30 | let screen_h = graphics::drawable_size(ctx).1; 31 | if keyboard::is_key_pressed(ctx, keycode) { 32 | pos.y += y_dir * PLAYER_SPEED * dt; 33 | } 34 | clamp( 35 | &mut pos.y, 36 | RACKET_HEIGHT_HALF, 37 | screen_h - RACKET_HEIGHT_HALF, 38 | ); 39 | } 40 | 41 | fn randomize_vec(vec: &mut na::Vector2, x: f32, y: f32) { 42 | let mut rng = thread_rng(); 43 | vec.x = match rng.gen_bool(0.5) { 44 | true => x, 45 | false => -x, 46 | }; 47 | vec.y = match rng.gen_bool(0.5) { 48 | true => y, 49 | false => -y, 50 | }; 51 | } 52 | 53 | struct MainState { 54 | player_1_pos: na::Point2, 55 | player_2_pos: na::Point2, 56 | ball_pos: na::Point2, 57 | ball_vel: na::Vector2, 58 | player_1_score: i32, 59 | player_2_score: i32, 60 | } 61 | 62 | impl MainState { 63 | pub fn new(ctx: &mut Context) -> Self { 64 | let (screen_w, screen_h) = graphics::drawable_size(ctx); 65 | let (screen_w_half, screen_h_half) = (screen_w * 0.5, screen_h * 0.5); 66 | 67 | let mut ball_vel = na::Vector2::new(0.0, 0.0); 68 | randomize_vec(&mut ball_vel, BALL_SPEED, BALL_SPEED); 69 | 70 | MainState { 71 | player_1_pos: na::Point2::new(RACKET_WIDTH_HALF + PADDING, screen_h_half), 72 | player_2_pos: na::Point2::new(screen_w - RACKET_WIDTH_HALF - PADDING, screen_h_half), 73 | ball_pos: na::Point2::new(screen_w_half, screen_h_half), 74 | ball_vel, 75 | player_1_score: 0, 76 | player_2_score: 0, 77 | } 78 | } 79 | } 80 | 81 | impl event::EventHandler for MainState { 82 | fn update(&mut self, ctx: &mut Context) -> GameResult { 83 | let dt = ggez::timer::delta(ctx).as_secs_f32(); 84 | let (screen_w, screen_h) = graphics::drawable_size(ctx); 85 | move_racket(&mut self.player_1_pos, KeyCode::W, -1.0, ctx); 86 | move_racket(&mut self.player_1_pos, KeyCode::S, 1.0, ctx); 87 | move_racket(&mut self.player_2_pos, KeyCode::Up, -1.0, ctx); 88 | move_racket(&mut self.player_2_pos, KeyCode::Down, 1.0, ctx); 89 | 90 | self.ball_pos += self.ball_vel * dt; 91 | 92 | if self.ball_pos.x < 0.0 { 93 | self.ball_pos.x = screen_w * 0.5; 94 | self.ball_pos.y = screen_h * 0.5; 95 | randomize_vec(&mut self.ball_vel, BALL_SPEED, BALL_SPEED); 96 | self.player_2_score += 1; 97 | } 98 | if self.ball_pos.x > screen_w { 99 | self.ball_pos.x = screen_w * 0.5; 100 | self.ball_pos.y = screen_h * 0.5; 101 | randomize_vec(&mut self.ball_vel, BALL_SPEED, BALL_SPEED); 102 | self.player_1_score += 1; 103 | } 104 | 105 | // ball, Y bounce 106 | if self.ball_pos.y < BALL_SIZE_HALF { 107 | self.ball_pos.y = BALL_SIZE_HALF; 108 | self.ball_vel.y = self.ball_vel.y.abs(); 109 | } else if self.ball_pos.y > screen_h - BALL_SIZE_HALF { 110 | self.ball_pos.y = screen_h - BALL_SIZE_HALF; 111 | self.ball_vel.y = -self.ball_vel.y.abs(); 112 | } 113 | 114 | let intersects_player_1 = self.ball_pos.x - BALL_SIZE_HALF 115 | < self.player_1_pos.x + RACKET_WIDTH_HALF 116 | && self.ball_pos.x + BALL_SIZE_HALF > self.player_1_pos.x - RACKET_WIDTH_HALF 117 | && self.ball_pos.y - BALL_SIZE_HALF < self.player_1_pos.y + RACKET_HEIGHT_HALF 118 | && self.ball_pos.y + BALL_SIZE_HALF > self.player_1_pos.y - RACKET_HEIGHT_HALF; 119 | 120 | if intersects_player_1 { 121 | self.ball_vel.x = self.ball_vel.x.abs(); 122 | } 123 | let intersects_player_2 = self.ball_pos.x - BALL_SIZE_HALF 124 | < self.player_2_pos.x + RACKET_WIDTH_HALF 125 | && self.ball_pos.x + BALL_SIZE_HALF > self.player_2_pos.x - RACKET_WIDTH_HALF 126 | && self.ball_pos.y - BALL_SIZE_HALF < self.player_2_pos.y + RACKET_HEIGHT_HALF 127 | && self.ball_pos.y + BALL_SIZE_HALF > self.player_2_pos.y - RACKET_HEIGHT_HALF; 128 | 129 | if intersects_player_2 { 130 | self.ball_vel.x = -self.ball_vel.x.abs(); 131 | } 132 | Ok(()) 133 | } 134 | 135 | fn draw(&mut self, ctx: &mut Context) -> GameResult { 136 | graphics::clear(ctx, graphics::BLACK); 137 | 138 | let racket_rect = graphics::Rect::new( 139 | -RACKET_WIDTH_HALF, 140 | -RACKET_HEIGHT_HALF, 141 | RACKET_WIDTH, 142 | RACKET_HEIGHT, 143 | ); 144 | let racket_mesh = graphics::Mesh::new_rectangle( 145 | ctx, 146 | graphics::DrawMode::fill(), 147 | racket_rect, 148 | graphics::WHITE, 149 | )?; 150 | 151 | let ball_rect = graphics::Rect::new(-BALL_SIZE_HALF, -BALL_SIZE_HALF, BALL_SIZE, BALL_SIZE); 152 | let ball_mesh = graphics::Mesh::new_rectangle( 153 | ctx, 154 | graphics::DrawMode::fill(), 155 | ball_rect, 156 | graphics::WHITE, 157 | )?; 158 | 159 | let screen_h = graphics::drawable_size(ctx).1; 160 | let middle_rect = graphics::Rect::new(-MIDDLE_LINE_W * 0.5, 0.0, MIDDLE_LINE_W, screen_h); 161 | let middle_mesh = graphics::Mesh::new_rectangle( 162 | ctx, 163 | graphics::DrawMode::fill(), 164 | middle_rect, 165 | graphics::WHITE, 166 | )?; 167 | 168 | let mut draw_param = graphics::DrawParam::default(); 169 | 170 | let screen_middle_x = graphics::drawable_size(ctx).0 * 0.5; 171 | draw_param.dest = [screen_middle_x, 0.0].into(); 172 | graphics::draw(ctx, &middle_mesh, draw_param)?; 173 | 174 | draw_param.dest = self.player_1_pos.into(); 175 | graphics::draw(ctx, &racket_mesh, draw_param)?; 176 | 177 | draw_param.dest = self.player_2_pos.into(); 178 | graphics::draw(ctx, &racket_mesh, draw_param)?; 179 | 180 | draw_param.dest = self.ball_pos.into(); 181 | graphics::draw(ctx, &ball_mesh, draw_param)?; 182 | 183 | let score_text = graphics::Text::new(format!( 184 | "{} {}", 185 | self.player_1_score, self.player_2_score 186 | )); 187 | let screen_w = graphics::drawable_size(ctx).0; 188 | let screen_w_half = screen_w * 0.5; 189 | 190 | let mut score_pos = na::Point2::new(screen_w_half, 40.0); 191 | let (score_text_w, score_text_h) = score_text.dimensions(ctx); 192 | score_pos -= na::Vector2::new(score_text_w as f32 * 0.5, score_text_h as f32 * 0.5); 193 | draw_param.dest = score_pos.into(); 194 | 195 | graphics::draw(ctx, &score_text, draw_param)?; 196 | 197 | graphics::present(ctx)?; 198 | Ok(()) 199 | } 200 | } 201 | 202 | fn main() -> GameResult { 203 | let cb = ggez::ContextBuilder::new("pong", "TanTan"); 204 | let (mut ctx, mut event_loop) = cb.build()?; 205 | graphics::set_window_title(&ctx, "Rusty Pong"); 206 | let mut state = MainState::new(&mut ctx); 207 | event::run(&mut ctx, &mut event_loop, &mut state) 208 | } 209 | --------------------------------------------------------------------------------