on_entry

Response Typescript
EntitiesRooms, Mobiles, Objects
Parameters[roomId1 [, roomId2 [, roomId2 [, ...] ] ] ]

    This trigger will fire when a mobile enters the room. The only entities
capable of catching this trigger are the mobile itself or any objects it
is carrying or has equipped. If any of the optional roomIdX paramerters
are set then the trigger will only fire if the mobile or object has
entered a room matching one of the set IDs.

@n - The mobile that entered the room.

@o - The same as @i if the trigger owner is an object.