fix: compiler error

src/render/WorldRenderer.cpp

@@ -184,7 +184,7 @@ void WorldRenderer::renderTowerUpgradePopup() {
                 if (x > 0)
                     ImGui::SameLine();
 
-                int currentLevel = x + 1;
+                std::uint8_t currentLevel = x + 1;
                 game::TowerPath currentPath = game::TowerPath(y);
 
                 const game::TowerStats* towerStats = game::getTowerStats(tower->getType(), { currentLevel, currentPath });