So i just released Radioactive Sandbox v1.0.
This thread will show you how to make a map for it.
Here’s a basic layout. What it should show you is how densely you should be placing each entity type, and where you should be placing them.
info_player_bandoliers/army/exodus - the spawn points for each team.
npc_trader_bandoliers/army/exodus - the npc trader for each team. Try to put them indoors somewhere.
info_npcspawn - this is used for NPC spawning (not yet implemented but it will be). enemy NPCs will spawn at these. Place them far away from the bases.
info_lootspawn - this is used for spawning random loot drops. your map should be pretty much covered with these. Every area should have at least one possible spot for loot to spawn at. The more, the better. These spawnpoints have no performance hit at all, so you could literally put 5000 of them on your map if you wanted.
point_stash - these are areas where players can stash things. place these inside of props and players will be able to store items inside them.
point_radiation - these create radiation where they are placed. when the map loads, 50% of these will be randomly selected and deleted. This will make each server have a unique placement of radiation.
Keyvalues for certain entities
point_radiation - randomradius - if this keyvalue is set, then the reach of the radiation will be randomized between 500 units and the units you specify (ie. If i set randomradius to 1000 then the reach of the radiation will be set to some number between 500 and 1000 when the map loads).
point_radiation - radius - if this keyvalue is set then the radius of the radiation will be set to whatever value you specify. if neither of these keyvalues is set then the radius defaults to 500.
Of course if the gamemode is going to use NPC’s, your map will need to be noded properly.
You can download my example VMF here.
I made a simple exodus base: http://dl.dropbox.com/u/3310518/gmodshit/rs_exodusbase.vmf