feat: game loop

.github/workflows/deploy.yaml

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+name: Github Pages
+
+on: [push]
+
+permissions:
+  contents: write
+
+jobs:
+  build-github-pages:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2 # repo checkout
+      - uses: mymindstorm/setup-emsdk@v11 # setup emscripten toolchain
+        # with:
+        #   version: 3.1.35
+      - uses: actions-rs/toolchain@v1 # get rust toolchain for wasm
+        with:
+          toolchain: stable
+          target: wasm32-unknown-emscripten
+          override: true
+      - name: Rust Cache # cache the rust build artefacts
+        uses: Swatinem/rust-cache@v1
+      - name: Build # build
+        run: ./build.sh
+      - name: Deploy
+        uses: JamesIves/github-pages-deploy-action@v4
+        with:
+          folder: dist

.gitignore

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+/target
+.idea

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "Pac-Man"
+version = "0.1.0"
+dependencies = [
+ "sdl2",
+]
+
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "libc"
+version = "0.2.147"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4668fb0ea861c1df094127ac5f1da3409a82116a4ba74fca2e58ef927159bb3"
+
+[[package]]
+name = "sdl2"
+version = "0.35.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7959277b623f1fb9e04aea73686c3ca52f01b2145f8ea16f4ff30d8b7623b1a"
+dependencies = [
+ "bitflags",
+ "lazy_static",
+ "libc",
+ "sdl2-sys",
+]
+
+[[package]]
+name = "sdl2-sys"
+version = "0.35.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3586be2cf6c0a8099a79a12b4084357aa9b3e0b0d7980e3b67aaf7a9d55f9f0"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "version-compare",
+]
+
+[[package]]
+name = "version-compare"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "579a42fc0b8e0c63b76519a339be31bed574929511fa53c1a3acae26eb258f29"

Cargo.toml

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+[package]
+name = "Pac-Man"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+sdl2 = { version = "0.35", features = ["image", "ttf", "mixer"] }

build.sh

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+#!/bin/sh
+set -eux
+
+cargo build --target=wasm32-unknown-emscripten --release
+
+mkdir -p dist
+
+cp target/wasm32-unknown-emscripten/release/rust_sdl2_wasm.wasm dist
+cp target/wasm32-unknown-emscripten/release/rust-sdl2-wasm.js dist
+cp index.html dist

src/constants.rs

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+pub const BOARD_WIDTH: u32 = 28;
+pub const BOARD_HEIGHT: u32 = 36;
+pub const BLOCK_SIZE_24: u32 = 24;
+pub const BLOCK_SIZE_32: u32 = 32;
+
+pub const WINDOW_WIDTH: u32 = BLOCK_SIZE_24 * BOARD_WIDTH;
+pub const WINDOW_HEIGHT: u32 = BLOCK_SIZE_24 * BOARD_HEIGHT;
+
+pub const RAW_BOARD: &str = r###"
+
+
+############################
+#............##............#
+#.####.#####.##.#####.####.#
+#o####.#####.##.#####.####o#
+#.####.#####.##.#####.####.#
+#..........................#
+#.####.##.########.##.####.#
+#.####.##.########.##.####.#
+#......##....##....##......#
+######.##### ## #####.######
+     #.##### ## #####.#
+     #.##    1     ##.#
+     #.## ###==### ##.#
+######.## #      # ##.######
+      .   #2 3 4 #   .
+######.## #      # ##.######
+     #.## ######## ##.#
+     #.##          ##.#
+     #.## ######## ##.#
+######.## ######## ##.######
+#............##............#
+#.####.#####.##.#####.####.#
+#.####.#####.##.#####.####.#
+#o..##.......0 .......##..o#
+###.##.##.########.##.##.###
+###.##.##.########.##.##.###
+#......##....##....##......#
+#.##########.##.##########.#
+#.##########.##.##########.#
+#..........................#
+############################
+
+                            "###;

src/game.rs

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+pub struct Game {}
+
+impl Game {
+    pub fn new() -> Game {
+        Game {}
+    }
+
+    pub fn tick() {}
+
+    pub fn draw() {}
+}

src/main.rs

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+use sdl2::pixels::Color;
+use sdl2::event::Event;
+use sdl2::image::LoadTexture;
+use sdl2::keyboard::{Keycode, Mod};
+use std::time::Duration;
+use crate::constants::{WINDOW_WIDTH, WINDOW_HEIGHT};
+
+mod constants;
+mod board;
+mod game;
+
+pub fn main() {
+    let sdl_context = sdl2::init().unwrap();
+    let video_subsystem = sdl_context.video().unwrap();
+
+    let window = video_subsystem.window("Pac-Man", WINDOW_WIDTH, WINDOW_HEIGHT)
+        .position_centered()
+        .build()
+        .expect("Could not initialize window");
+
+    let mut canvas = window.into_canvas().build().expect("Could not build canvas");
+    let texture_creator= canvas.texture_creator();
+
+    let map_texture = texture_creator.load_texture("assets/map.png").expect("Could not load pacman texture");
+    canvas.copy(&map_texture, None, None).expect("Could not render texture on canvas");
+
+    let mut event_pump = sdl_context.event_pump().expect("Could not get SDL EventPump");
+    'main: loop {
+        for event in event_pump.poll_iter() {
+            match event {
+                Event::Quit { .. } |
+                Event::KeyDown { keycode: Some(Keycode::Q), .. } => {
+                    break 'main;
+                }
+                event @ Event::KeyDown {  .. } => {
+                    println!("{:?}", event);
+                },
+                _ => {}
+            }
+        }
+
+        canvas.present();
+        ::std::thread::sleep(Duration::from_millis(10));
+    }
+}