initial commit

src/main.rs

@@ -0,0 +1,81 @@
+extern crate sdl2;
+
+
+use sdl2::video::{Window, WindowPos, OPENGL};
+use sdl2::event::{poll_event, Event};
+use sdl2::timer::{get_ticks, delay};
+use sdl2::rect::{Rect};
+
+
+const SCREEN_WIDTH : int = 800;
+const SCREEN_HEIGHT : int = 600;
+
+const MS_PER_UPDATE : uint = 10;
+
+
+fn main() {
+    sdl2::init(sdl2::INIT_EVERYTHING);
+    
+    let window = match Window::new("SMB", WindowPos::PosCentered, WindowPos::PosCentered, SCREEN_WIDTH, SCREEN_HEIGHT, OPENGL) {
+        Ok(window) => window,
+        Err(err)   => panic!("failed to create window: {}", err)
+    };
+
+    let renderer = match sdl2::render::Renderer::from_window(window, sdl2::render::RenderDriverIndex::Auto, sdl2::render::ACCELERATED) {
+        Ok(renderer) => renderer,
+        Err(err)     => panic!("failed to create renderer: {}", err)
+    };
+        
+    let mut player = Rect::new(0, 290, 10, 10);
+
+    let mut x : f32 = 390.0;
+    let mut v_x : f32 = 0.0;
+    
+    let mut current : uint = 0;
+    let mut elapsed : uint = 0;
+    let mut lag : uint = 0;
+    
+    let mut previous : uint = get_ticks();
+
+    'event : loop {
+        current = get_ticks();
+        elapsed = current - previous;
+        previous = current;
+        lag += elapsed;
+
+        v_x = 0.0;
+        match poll_event() {
+            Event::Quit(_) => break 'event,
+            Event::KeyDown(_, _, key, _, _, _) => {
+                if key == sdl2::keycode::KeyCode::Escape {
+                    break 'event;
+                } else if key == sdl2::keycode::KeyCode::Right {
+                    v_x = 1.0;
+                } else if key == sdl2::keycode::KeyCode::Left {
+                    v_x = -1.0;
+                }
+            },
+            _ => (),
+        }
+
+        while lag >= MS_PER_UPDATE {
+            x += v_x;
+
+            lag -= MS_PER_UPDATE;
+
+            println!("lag: {}", lag);
+        }
+
+        let _ = renderer.set_draw_color(sdl2::pixels::Color::RGB(0, 0, 0));
+        let _ = renderer.clear();
+
+        player.x = x as i32;
+        
+        let _ = renderer.set_draw_color(sdl2::pixels::Color::RGB(0, 255, 0));
+        let _ = renderer.fill_rect(&player);
+        
+        renderer.present();
+    }
+
+    sdl2::quit();
+}