Clear in the event loop instead of in draw()

src/lib.rs

@@ -179,8 +179,6 @@ impl Sprite {
         let (creator, canvas) = ctx.inner();
         let text = creator.create_texture_from_surface(&self.surf)?;
 
-        canvas.fill_rect(None)?;
-        canvas.clear();
         canvas.copy_ex(&text, None, self.rect, self.angle, None, false, false)?;
 
         Ok(())
@@ -241,7 +239,7 @@ pub struct Context {
 }
 
 impl Context {
-    pub fn new(canvas: Canvas<Window>) -> Self {
+    fn new(canvas: Canvas<Window>) -> Self {
         let creator = canvas.texture_creator();
         Self {
             canvas,
@@ -249,17 +247,17 @@ impl Context {
         }
     }
 
-    pub fn canvas(&mut self) -> &mut Canvas<Window> {
-        &mut self.canvas
-    }
-
     pub fn inner(&mut self) -> (&TextureCreator<WindowContext>, &mut Canvas<Window>) {
         (&self.texture_creator, &mut self.canvas)
     }
 
-    pub fn update(&mut self) {
+    fn update(&mut self) {
         self.canvas.present();
     }
+
+    fn clear(&mut self) {
+        self.canvas.clear();
+    }
 }
 
 /// Representation of the game.
@@ -324,6 +322,7 @@ impl Game {
             if self.stopped.get() {
                 break;
             }
+            ctx.clear();
             func(&mut ctx, &mut events);
             ctx.update();
         }

src/main.rs

@@ -5,6 +5,7 @@ fn main() {
 
     let mut i = 0.0;
     let mut s = Sprite::new("duck.png", 500, 400).unwrap();
+    let mut s2 = Sprite::new("duck.png", 400, 500).unwrap();
     game.run(|ctx, event_pump| {
         i = (i + 1.0) % 360.0;
 
@@ -39,6 +40,7 @@ fn main() {
             }
         }
 
+        s2.draw(ctx).unwrap();
         s.draw(ctx).unwrap();
     })
     .unwrap();