Add appearing and disappearing boxes

game/assets/levels/level_0/zones.json

@@ -7,7 +7,20 @@
             "height": 57
         }
     ],
-    "disappear": [],
+    "disappear": [
+        {
+            "x": 792,
+            "y": 462,
+            "width": 54,
+            "height": 468
+        },
+        {
+            "x": 2005,
+            "y": 641,
+            "width": 141,
+            "height": 289
+        }
+    ],
     "win": {
         "x": 3000,
         "y": 0,

game/src/scenes/ingame_scene/level/loader.rs

@@ -46,6 +46,11 @@ pub fn load_all_levels(
                 thread,
                 &format!("levels/{}/appearing_platforms.png", level_name),
             )?,
+            disappearing_platform_tex: load_texture_from_internal_data(
+                raylib_handle,
+                thread,
+                &format!("levels/{}/disappearing_platforms.png", level_name),
+            )?,
             colliders: serde_json::from_str(
                 &String::from_utf8(
                     StaticGameData::get(&format!("levels/{}/colliders.json", level_name))

game/src/scenes/ingame_scene/level/mod.rs

@@ -17,6 +17,7 @@ pub struct Level {
     pub background_tex: WorldPaintTexture,
     pub platform_tex: Texture2D,
     pub appearing_platform_tex: Texture2D,
+    pub disappearing_platform_tex: Texture2D,
     pub colliders: Vec<Rectangle>,
     pub zones: LevelZones,
 }

game/src/scenes/ingame_scene/world.rs

@@ -13,6 +13,7 @@ use tracing::trace;
 
 pub const WORLD_LEVEL_X_OFFSET: f32 = 200.0;
 pub const APPEAR_FADE_DISTANCE: f32 = 16.0;
+pub const DISAPPEAR_FADE_DISTANCE: f32 = 18.0;
 
 impl WorldSpaceRender for InGameScreen {
     fn render_world_space(
@@ -37,6 +38,7 @@ impl WorldSpaceRender for InGameScreen {
             Color::WHITE,
         );
 
+        {
             // Calculate the distance between the player and the nearest appearing zone
             let appear_zone_dist = cur_level
                 .zones
@@ -50,14 +52,21 @@ impl WorldSpaceRender for InGameScreen {
                     .distance_to(self.player.position) as i32
                 })
                 .min()
-            .unwrap();
-        let opacity = interpolate_exp(
-            (appear_zone_dist as f32).sub(APPEAR_FADE_DISTANCE.div(2.0)).div(APPEAR_FADE_DISTANCE).mul(-1.0),
+                .unwrap_or(i32::MAX);
+            let appear_opacity = interpolate_exp(
+                (appear_zone_dist as f32)
+                    .sub(APPEAR_FADE_DISTANCE.div(2.0))
+                    .div(APPEAR_FADE_DISTANCE)
+                    .mul(-1.0),
                 -APPEAR_FADE_DISTANCE..APPEAR_FADE_DISTANCE,
                 0.0..1.0,
                 8.0,
             );
-        trace!("Appearing values: ({}, {})", appear_zone_dist, opacity);
+            trace!(
+                "Appearing values: ({}, {})",
+                appear_zone_dist,
+                appear_opacity
+            );
 
             // Render the appearing layer
             raylib.draw_texture_v(
@@ -66,8 +75,50 @@ impl WorldSpaceRender for InGameScreen {
                     WORLD_LEVEL_X_OFFSET,
                     -cur_level.appearing_platform_tex.height as f32,
                 ),
-            Color::WHITE.fade(opacity),
+                Color::WHITE.fade(appear_opacity),
             );
+        }
+
+        {
+            // Calculate the distance between the player and the nearest disappearing zone
+            let disappear_zone_dist = cur_level
+                .zones
+                .disappear
+                .iter()
+                .map(|zone| {
+                    Vector2::new(
+                        zone.x + WORLD_LEVEL_X_OFFSET + (zone.width / 2.0),
+                        zone.y - cur_level.platform_tex.height as f32,
+                    )
+                    .distance_to(self.player.position) as i32
+                })
+                .min()
+                .unwrap_or(i32::MAX);
+            let disappear_opacity = interpolate_exp(
+                (disappear_zone_dist as f32)
+                    .sub(DISAPPEAR_FADE_DISTANCE.div(2.0))
+                    .div(DISAPPEAR_FADE_DISTANCE)
+                    .mul(-1.0),
+                -DISAPPEAR_FADE_DISTANCE..DISAPPEAR_FADE_DISTANCE,
+                0.0..1.0,
+                8.0,
+            );
+            trace!(
+                "Disappearing values: ({}, {})",
+                disappear_zone_dist,
+                disappear_opacity
+            );
+
+            // Render the appearing layer
+            raylib.draw_texture_v(
+                &cur_level.disappearing_platform_tex,
+                Vector2::new(
+                    WORLD_LEVEL_X_OFFSET,
+                    -cur_level.disappearing_platform_tex.height as f32,
+                ),
+                Color::WHITE.fade(1.0 - disappear_opacity),
+            );
+        }
 
         #[cfg(all(debug_assertions, feature = "collider_debug"))]
         {