Make goal icon only show up when holding ball

rust/src/game/mod.rs

@@ -336,6 +336,10 @@ impl Game {
     pub fn on_player_killed(player: u16);
     #[signal]
     pub fn on_map_loaded(map: Gd<Map>);
+    #[signal]
+    pub fn on_pickup_ball(player_id: u16);
+    #[signal]
+    pub fn on_drop_ball();
 
     pub fn singleton() -> Option<Gd<Game>> {
         if GameManager::singleton().get_children().len() > 0 {
@@ -734,6 +738,7 @@ impl Game {
         velocity: Option<NetVector3>,
         player_id: Option<u16>,
     ) {
+        godot_print!("Spawned ball");
         if let Some(map) = &mut self.current_map {
             let mut ball = map.bind_mut().spawn_ball(transform, velocity, player_id);
             if let Some(ball) = &mut ball {
@@ -759,6 +764,7 @@ impl Game {
                 }
             });
         }
+        self.signals().on_drop_ball().emit();
     }
 
     pub fn despawn_ball(&mut self) {
@@ -860,6 +866,21 @@ impl Game {
             return;
         }
 
+        if weapon_type == WeaponType::Ball {
+            self.run_deferred(move |s| s.signals().on_pickup_ball().emit(player_id));
+        }
+
+        if let Some(player) = self.find_player(player_id).clone()
+            && let Some(character) = player.character.clone()
+        {
+            if let Some(weapon) = character.dyn_bind().get_weapon()
+                && weapon.dyn_bind().get_type() == WeaponType::Ball
+                && weapon_type != WeaponType::Ball
+            {
+                self.run_deferred(move |s| s.signals().on_drop_ball().emit());
+            }
+        }
+
         if let Some(player) = self.find_player_mut(player_id)
             && let Some(character) = &mut player.character
         {

rust/src/map/goal.rs

@@ -26,6 +26,19 @@ pub struct Goal {
 #[godot_api]
 impl IArea3D for Goal {
     fn ready(&mut self) {
+        self.update_icon_visibility();
+
+        if let Some(game) = &mut Game::singleton() {
+            game.bind_mut()
+                .signals()
+                .on_pickup_ball()
+                .connect_other(self, |s, _| s.run_deferred(|s| s.update_icon_visibility()));
+            game.bind_mut()
+                .signals()
+                .on_drop_ball()
+                .connect_other(self, |s| s.run_deferred(|s| s.update_icon_visibility()));
+        }
+
         self.update_color();
         self.base()
             .signals()
@@ -67,7 +80,22 @@ impl Goal {
         }
     }
 
-    fn on_enter(&self, node: Gd<Node3D>) {
+    fn update_icon_visibility(&mut self) {
+        if let Some(icon) = &mut self.icon {
+            if let Some(game) = Game::singleton()
+                && let Some(ball_holder) = game.bind().ball_holder
+                && let Some(player) = game.bind().find_player(ball_holder)
+                && ball_holder == game.bind().self_id.unwrap_or(0)
+                && player.data.team != self.team
+            {
+                icon.set_visible(true);
+            } else {
+                icon.set_visible(false);
+            }
+        }
+    }
+
+    fn on_enter(&mut self, node: Gd<Node3D>) {
         if !NetworkManager::singleton().bind().is_host() {
             return;
         }
@@ -85,7 +113,7 @@ impl Goal {
         }
 
         if let Some(player_id) = is_goal {
-            if let Some(mut game) = Game::singleton() {
+            if let Some(game) = Game::singleton() {
                 let teams = game
                     .bind()
                     .get_teams()
@@ -94,8 +122,12 @@ impl Goal {
                     .map(|(id, _)| id as u8)
                     .filter(|id| *id != self.team)
                     .collect();
-                game.bind_mut().respawn_ball();
+                self.run_deferred_gd(move |_| {
-                game.bind_mut().handle_goal(player_id, teams);
+                    if let Some(game) = &mut Game::singleton() {
+                        game.bind_mut().respawn_ball();
+                        game.bind_mut().handle_goal(player_id, teams);
+                    }
+                });
             }
         }
     }

rust/src/player/mod.rs

@@ -154,6 +154,9 @@ impl<T: IPlayer + ICharacterBody3D + WithBaseField> PlayerCommon for T {
                 {
                     s.swap_weapon(player.last_held_weapon, false);
                 }
+                if let Some(game) = &mut Game::singleton() {
+                    game.bind_mut().ball_holder.take();
+                }
                 if NetworkManager::singleton().bind().is_host() {
                     if let Some(mut game) = Game::singleton() {
                         if let Some(ball_origin) = &s.get_camera_origin() {