const int IT_STRENGTH = BIT(22);
// item masks
-const int IT_AMMO = IT_FUEL | IT_SHELLS | IT_NAILS | IT_ROCKETS | IT_CELLS | IT_PLASMA;
const int IT_UNLIMITED_AMMO = IT_UNLIMITED_WEAPON_AMMO | IT_UNLIMITED_SUPERWEAPONS;
const int IT_PICKUPMASK = IT_UNLIMITED_AMMO | IT_JETPACK | IT_FUEL_REGEN; // strength and invincible are handled separately