refactored constant
refactored constant

dennis-park/OOGALoompas,codylieu/oogasalad_OOGALoompas,garysheng/tower-defense-game-engine,dianwen/oogasalad_TowerDefense,sdh31/tower_defense,jordanly/oogasalad_OOGALoompas,kevinkdo/oogasalad_OOGALoompas