Move out GameObject and components.

src/game_object.rs

@@ -0,0 +1,46 @@
+use sdl2::rect::Rect;
+use sdl2::render::Renderer;
+
+use component::{Updatable, Renderable};
+
+pub struct GameObject<'a> {
+    pub x: f32,
+    pub y: f32,
+    pub w: u32,
+    pub h: u32,
+    pub dx: f32,
+    pub dy: f32,
+    pub gravity: f32,
+    pub on_ground: bool,
+    physics: Box<Updatable + 'a>,
+    graphics: Box<Renderable + 'a>
+}
+
+impl<'a> GameObject<'a> {
+    pub fn new(x: f32, y: f32, physics: Box<Updatable + 'a>, graphics: Box<Renderable + 'a>) -> GameObject<'a> {
+        GameObject {
+            x: x,
+            y: y,
+            w: 32,
+            h: 32,
+            dx: 0.0,
+            dy: 0.0,
+            gravity: 0.3,
+            on_ground: false,
+            physics: physics,
+            graphics: graphics
+        }
+    }
+
+    pub fn update(&self) {
+        self.physics.update(self);
+    }
+
+    pub fn render(&self, elapsed: f64, renderer: &mut Renderer, destination: &Rect) {
+        self.graphics.render(self, elapsed, renderer, destination);
+    }
+
+    pub fn to_rect(&self) -> Rect {
+        Rect::new(self.x as i32, self.y as i32, 32, 32)
+    }
+}