Display & colors

.gitignore

@@ -0,0 +1,2 @@
+/target
+**/*.rs.bk

Cargo.lock

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Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "gamedev"
+version = "0.1.0"
+authors = ["Noëlle Anthony <noelle.d.anthony@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+sdl2 = "0.32"

src/main.rs

@@ -0,0 +1,46 @@
+use sdl2::pixels::Color;
+use sdl2::event::Event;
+use sdl2::keyboard::Keycode;
+use sdl2::render::WindowCanvas;
+use std::time::Duration;
+
+fn render(canvas: &mut WindowCanvas, color: Color) {
+    canvas.set_draw_color(color);
+    canvas.clear();
+    canvas.present();
+}
+
+fn main() -> Result<(), String> {
+    let sdl_context = sdl2::init()?;
+    let video_subsystem = sdl_context.video()?;
+
+    let window = video_subsystem.window("game tutorial", 800, 600)
+        .position_centered()
+        .build()
+        .expect("could not initialize video subsystem");
+
+    let mut canvas =  window.into_canvas().build()
+        .expect("could not make a canvas");
+    
+    let mut event_pump = sdl_context.event_pump()?;
+    let mut i = 0;
+    'running: loop {
+        for event in event_pump.poll_iter() {
+            match event {
+                Event::Quit {..} |
+                Event::KeyDown { keycode: Some(Keycode::Escape), .. } => {
+                    break 'running;
+                },
+                _ => {}
+            }
+        }
+
+        i = (i + 1) % 255;
+
+        render(&mut canvas, Color::RGB(i, 64, 255-i));
+
+        ::std::thread::sleep(Duration::new(0, 1_000_000_000u32 / 60));
+    }
+
+    Ok(())
+}