feat: game root now better handles despawned players

game_root.cpp

@@ -150,6 +150,12 @@ void GameRoot3D::place_player_at_spawnpoint(IPlayer *player) {
     player->spawn_at_position(spawn_point->get_global_transform());
 }
 
+void GameRoot3D::player_despawned(uint32_t id) {
+    Pair<PlayerInput*, IPlayer*> &pair = this->players.get(id);
+    pair.second = nullptr;
+    pair.first->clear_listeners();
+}
+
 void GameRoot3D::set_game_mode(Ref<GameMode> prototype) {
     this->remove_all_players();
     // allow "unsetting" the gamemode by passing an invalid gamemode
@@ -242,6 +248,7 @@ IPlayer *GameRoot3D::spawn_player(uint32_t id) {
         player_node->queue_free();
         return nullptr;
     }
+    player_node->connect("tree_exited", callable_mp(this, &GameRoot3D::player_despawned).bind(id));
     return player;
 }
 

game_root.hpp

@@ -55,6 +55,7 @@ public:
     // remove a spawnpoint so it can't be used to spawn players
     void unregister_spawn_point(SpawnPoint3D *spawn_point);
     void place_player_at_spawnpoint(IPlayer *player);
+    void player_despawned(uint32_t id);
 
     // ----- getter / setters -----
     // override the current gamemode

player_input.cpp

@@ -121,5 +121,9 @@ void PlayerInput::stop_listening(Listener const& listener) {
     if(itr != this->listeners.end())
         this->listeners.erase(itr);
 }
+
+void PlayerInput::clear_listeners() {
+    this->listeners.clear();
+}
 }
 

player_input.hpp

@@ -70,6 +70,7 @@ public:
     void listen_to(Listener const& listener);
     void stop_listening(Node *node);
     void stop_listening(Listener const& listener);
+    void clear_listeners();
 };
 }