reduce size by 4x

src/engine.rs

@@ -184,12 +184,7 @@ impl<'context, 'game> Context<'context, 'game> {
         self.canvas.copy(
             texture,
             None,
-            Rect::new(
+            Rect::new(x, y, texture.query().width, texture.query().height),
-                x * 4,
-                y * 4,
-                texture.query().width * 4,
-                texture.query().height * 4,
-            ),
         )?;
         Ok(())
     }

src/main.rs

@@ -40,7 +40,7 @@ impl System for GravitySystem {
     fn on_update(&self, ctx: &mut engine::Context, delta: f64) -> Result<(), engine::Error> {
         for id in engine::Quwi::<(Gravity, Velocity)>::new().run(&ctx) {
             let Velocity(_, y) = ctx.entity_component::<Velocity>(id);
-            *y = if *y < 200.0 { *y + 100.0 * delta } else { *y };
+            *y = if *y < 800.0 { *y + 400.0 * delta } else { *y };
         }
         Ok(())
     }
@@ -70,9 +70,9 @@ impl System for PlayerMovementSystem {
             let a_down = ctx.key_pressed(engine::Keycode::A);
             let Velocity(x, _) = ctx.entity_component::<Velocity>(id);
             *x = if d_down && !a_down {
-                100.0
+                400.0
             } else if !d_down && a_down {
-                -100.0
+                -400.0
             } else {
                 0.0
             };
@@ -92,8 +92,8 @@ fn main() {
     let sprite = context.load_sprite("textures/player.png").unwrap();
     context.spawn(vec![
         Box::new(Sprite { sprite }),
-        Box::new(Position(16.0, 140.0)),
+        Box::new(Position(16.0, 500.0)),
-        Box::new(Velocity(0.0, -150.0)),
+        Box::new(Velocity(0.0, -600.0)),
         Box::new(Gravity),
         Box::new(PlayerMovement),
     ]);