Display simple window

.gitignore

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+/target/
+**/*.rs.bk

Cargo.toml

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+[package]
+name = "rustenstein"
+version = "0.1.0"
+authors = ["Fabien Freling <public@ffreling.com>"]
+
+[dependencies]
+piston_window = "0.70.0"

src/main.rs

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+extern crate piston_window;
+
+use piston_window::*;
+
+enum Tile {
+    Empty,
+    Wall,
+}
+
+struct Position {
+    x: f64,
+    y: f64,
+}
+
+struct Player {
+   pos: Position,
+   angle: f64,
+}
+
+
+fn main() {
+    let mut window: PistonWindow =
+        WindowSettings::new("Rustenstein", [640, 480])
+        .exit_on_esc(true)
+        .resizable(false)
+        .build().unwrap();
+
+    let level: [Tile; 5 * 5] = [
+        Tile::Wall, Tile::Wall, Tile::Wall, Tile::Wall, Tile::Wall,
+        Tile::Wall, Tile::Empty, Tile::Empty, Tile::Empty, Tile::Wall,
+        Tile::Wall, Tile::Empty, Tile::Empty, Tile::Empty, Tile::Wall,
+        Tile::Wall, Tile::Empty, Tile::Empty, Tile::Empty, Tile::Wall,
+        Tile::Wall, Tile::Wall, Tile::Wall, Tile::Wall, Tile::Wall,
+    ];
+
+    let mut player: Player;
+    player.pos.x = 2.0;
+    player.pos.y = 2.0;
+    player.angle = 0.0;
+
+    while let Some(event) = window.next() {
+        let window_size = window.size();
+        let w = window_size.width as f64;
+        let h = window_size.height as f64;
+
+        window.draw_2d(&event, |context, graphics| {
+            clear([1.0; 4], graphics);
+
+            rectangle([1.0, 0.0, 0.0, 1.0], // red
+                      [0.0, 0.0, 100.0, 100.0],
+                      context.transform,
+                      graphics);
+
+            // Ceiling
+            let ceiling_color = [0.3, 0.3, 0.3, 1.0];
+            rectangle(ceiling_color,
+                      [0.0, 0.0, w, h / 2.0],
+                      context.transform,
+                      graphics);
+
+            // Floor
+            let floor_color = [0.5, 0.5, 0.5, 1.0];
+            rectangle(floor_color,
+                      [0.0, h / 2.0, w, h / 2.0],
+                      context.transform,
+                      graphics);
+        });
+    }
+}