Initial Commit

.gitignore

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+/target

Cargo.toml

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+[package]
+name = "snake-rs"
+version = "0.1.0"
+authors = ["Marco Thomas <mthomas@marcmk.de>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+piston = "0.52.0"
+piston2d-graphics = "0.36.0"
+pistoncore-glutin_window = "0.66.0"
+piston2d-opengl_graphics = "0.73.0"

src/main.rs

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+extern crate glutin_window;
+extern crate graphics;
+extern crate opengl_graphics;
+extern crate piston;
+
+use piston::window::WindowSettings;
+use piston::input::*;
+use piston::event_loop::*;
+use glutin_window::GlutinWindow;
+use opengl_graphics::{GlGraphics, OpenGL};
+
+struct Game {
+    gl: GlGraphics,
+    snake: Snake,
+}
+
+impl Game {
+    fn render(&mut self, args: &RenderArgs) {
+        use graphics;
+
+        const BLACK: [f32; 4] = [0.0, 0.0, 0.0, 1.0];
+
+        self.gl.draw(args.viewport(), |_c, gl| {
+                     graphics::clear(BLACK, gl);
+        });
+
+        self.snake.render(&mut self.gl, args);
+    }
+}
+
+struct Snake {
+    x_pos: i32,
+    y_pos: i32,
+}
+
+impl Snake {
+    fn render(&self, gl: &mut GlGraphics, args: &RenderArgs) {
+        use graphics;
+
+        const GREEN: [f32; 4] = [0.0, 1.0, 0.0, 1.0];
+
+        let square = graphics::rectangle::square(
+            self.x_pos as f64,
+            self.y_pos as f64,
+            20.0);
+
+        gl.draw(args.viewport(), |c, gl| {
+            let transform = c.transform;
+
+            graphics::rectangle(GREEN, square, transform, gl);
+        });
+    }
+}
+
+fn main() {
+    let opengl = OpenGL::V3_2;
+
+    let mut window: GlutinWindow = WindowSettings::new(
+        "snake-rs",
+        [200, 200])
+        .graphics_api(opengl)
+        .exit_on_esc(true)
+        .build()
+        .unwrap();
+
+    let mut game = Game {
+        gl: GlGraphics::new(opengl),
+        snake: Snake {
+            x_pos: 50,
+            y_pos: 50
+        },
+    };
+
+
+    let mut events = Events::new(EventSettings::new());
+    while let Some(e) = events.next(&mut window) {
+        if let Some(args) = e.render_args() {
+            game.render(&args);
+        }
+    }
+}
+