Design pattern is a general reusable solution to a commonly occurring problem within a given context in software design.

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Anyone have a source for pictures/screenshots/demos of Mud OLC systems?

I really want to get access to some images of MUD (multi user domain/multi user dungeon) OLC (mud OnLine Creation), to use the structure of npcs/mobs/characters/areas/rooms that muds use on my own ...
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Are there cases where globals/singletons are useful in game development?

I know that having global variables or singleton classes creates cases that can be difficult to test/manage and I have been busted in using those patterns in code but often times you gotta ship. So ...