This function will copy one room to another, removing all instances, tiles etc... from the room that is being copied to and replacing them completely with the new room contents.
Argument Description index The index of the original room to be copied from. room The index of the room to be copied to.
global.rm = room_add();
The above code will add a new room to the game and then copy the contents of the room indexed as "rm_Base" into it.