remove mobs on player leave

src/td/game/World.cpp

@@ -123,6 +123,17 @@ void World::SpawnMobAt(MobID id, MobType type, std::uint8_t level, PlayerID send
 	GetMobNotifier().NotifyListeners(&MobListener::OnMobSpawn, mob.get());
 }
 
+MobPtr World::RemoveMob(MobID mobId) {
+	auto it = std::find_if(m_Mobs.begin(), m_Mobs.end(), [mobId](MobPtr mob) { return mob->GetMobID() == mobId;});
+	if (it == m_Mobs.end()) return nullptr;
+
+	MobPtr mob = *it;
+
+	m_Mobs.erase(it);
+
+	return mob;
+}
+
 TowerPtr World::PlaceTowerAt(TowerID id, TowerType type, std::int32_t x, std::int32_t y, PlayerID builder) {
 	TowerPtr tower = TowerFactory::CreateTower(type, id, x, y, builder);
 	m_Towers.push_back(tower);