Clear the backgrounds once they aren't used any more

agb/src/display/background.rs

@@ -649,6 +649,10 @@ impl<'a> InfiniteScrolledMap<'a> {
     pub fn commit(&mut self) {
         self.map.commit();
     }
+
+    pub fn clear(&mut self, vram: &mut VRamManager) {
+        self.map.clear(vram);
+    }
 }
 
 fn div_floor(x: i32, y: i32) -> i32 {

examples/the-hat-chooses-the-wizard/src/main.rs

@@ -660,6 +660,11 @@ impl<'a, 'b, 'c> PlayingLevel<'a, 'b> {
         self.background.background.hide();
     }
 
+    fn clear_backgrounds(&mut self, vram: &mut VRamManager) {
+        self.background.background.clear(vram);
+        self.background.foreground.clear(vram);
+    }
+
     fn dead_start(&mut self) {
         self.player.wizard.velocity = (0, -1).into();
         self.player.wizard.sprite.set_priority(Priority::P0);
@@ -812,7 +817,7 @@ fn main(mut agb: agb::Gba) -> ! {
         let mut music_box = sfx::MusicBox::new();
 
         let vblank = agb::interrupt::VBlank::get();
-        let mut current_level = 10;
+        let mut current_level = 11;
 
         loop {
             if current_level == map_tiles::LEVELS.len() as u32 {
@@ -934,6 +939,7 @@ fn main(mut agb: agb::Gba) -> ! {
             }
 
             level.hide_backgrounds();
+            level.clear_backgrounds(&mut vram);
         }
 
         splash_screen::show_splash_screen(

examples/the-hat-chooses-the-wizard/src/splash_screen.rs

@@ -19,16 +19,14 @@ pub fn show_splash_screen(
     vram: &mut VRamManager,
 ) {
     map.set_scroll_pos((0u16, 0u16).into());
-    let tile_set_ref = match which {
+    let (tile_set_ref, palette) = match which {
         SplashScreen::Start => {
             let tile_set_ref = vram.add_tileset(TileSet::new(
                 splash_screens::splash.tiles,
                 TileFormat::FourBpp,
             ));
 
-            vram.set_background_palettes(splash_screens::splash.palettes);
+            (tile_set_ref, splash_screens::splash.palettes)
-
-            tile_set_ref
         }
         SplashScreen::End => {
             let tile_set_ref = vram.add_tileset(TileSet::new(
@@ -36,9 +34,7 @@ pub fn show_splash_screen(
                 TileFormat::FourBpp,
             ));
 
-            vram.set_background_palettes(splash_screens::thanks_for_playing.palettes);
+            (tile_set_ref, splash_screens::thanks_for_playing.palettes)
-
-            tile_set_ref
         }
     };
 
@@ -71,6 +67,7 @@ pub fn show_splash_screen(
     }
 
     map.commit();
+    vram.set_background_palettes(palette);
     map.show();
 
     loop {