Sprite Class constants

Each of the sprite class has an ID (integer) associated with it. You can use these constants:

CLASS_BACKGROUND_DECORATION
CLASS_ANTIGRAVITY
CLASS_METAL_LADDER
CLASS_SOLID_DOWN_ONLY
CLASS_REVERT_TO_BACKGROUND
CLASS_IMMEDIATELY_DEADLY
CLASS_SOLID_BACKGROUND
CLASS_STOP
CLASS_ANIMATED_THING
CLASS_PICKUP_TRIGGER
CLASS_INVENTORY_ITEM
CLASS_OPEN_TO_OWNER
CLASS_TELEPORTATION_PAD
CLASS_TELEPORTATION_DESTINATION
CLASS_Z_KEY_SWITCH
CLASS_ANIMATE_ONCE
CLASS_SOLID_ANIMATED
CLASS_PLAYER_OBJECT
CLASS_GENERIC_MONSTER
CLASS_USER_DEFINED_MONSTER
CLASS_DRONE_UP_DOWN
CLASS_DRONE_LEFT_RIGHT
CLASS_ATTACKER
CLASS_VAMPIRE_PLANT
CLASS_WHACKER_UP_DOWN
CLASS_WHACKER_LEFT_RIGHT
CLASS_PLATFORM_UP_DOWN
CLASS_PLATFORM_LEFT_RIGHT
CLASS_PLAYER_BULLER
CLASS_MONSTER_BULLET