X-Git-Url: http://git.dolda2000.com/gitweb/?a=blobdiff_plain;f=src%2Fboll.rs;h=f936fca261df8cc6142e896db502a171e9e2fbd8;hb=c315bb317cbd779063cb0135abe731886de30838;hp=b273f1d3145a8d6a5bf44b39e0ffed86f5f00369;hpb=296187ca027364405cf2fd95e727d5d1eaaec4fc;p=kaka%2Frust-sdl-test.git

diff --git a/src/boll.rs b/src/boll.rs
index b273f1d..f936fca 100644
--- a/src/boll.rs
+++ b/src/boll.rs
@@ -7,13 +7,18 @@ use sdl2::video::Window;
 use {SCREEN_HEIGHT, SCREEN_WIDTH};
 use common::Point2D;
 
-pub struct Boll {
+pub trait Boll {
+    fn update(&mut self);
+    fn draw(&mut self, canvas: &mut Canvas<Window>, size: u32);
+}
+
+pub struct SquareBoll {
     pub pos: Point2D<f64>,
     pub vel: Point2D<f64>,
 }
 
-impl Boll {
-    pub fn update(&mut self) {
+impl Boll for SquareBoll {
+    fn update(&mut self) {
         self.vel.y += 0.1;
         self.pos += self.vel;
 
@@ -35,7 +40,7 @@ impl Boll {
         }
     }
 
-    pub fn draw(&mut self,canvas: &mut Canvas<Window>, size: u32) {
+    fn draw(&mut self, canvas: &mut Canvas<Window>, size: u32) {
         canvas.set_draw_color(Color::RGBA(
             255 - std::cmp::min(255, (self.vel.length() * 25.0) as u8),
             (255.0 * (self.pos.x / SCREEN_WIDTH as f64)) as u8,