Spawn point limbo

Could someone please explain to me how spawn points work? The reason I'm asking is I've been trying to match the exact number of objectives I key into a map to the number of spawn points, but I can't seem to be able to predict how the spawns will behave and where they'll pop up.

Here's my conundrum: I see a room with three X spawn points and three O spawn points. I don't remember what those meant, exactly, but I assume all of them can hold a regular missions spawn, correct? My objective here is to have one entire room - the room where, say, all the Front spawns are - spawn as a faction different from that of the mission. Say I have a whole mission that's nothing but Freakshow, but I want one room to be nothing but Crey and it has the above setup.

Now, I know that I can put in one boss and two patrols that fill in three of those points, but wouldn't that mean that the OTHER three would spawn as normal? If not, where do regular spawns normally go? How can I calculate how many spawns I need to put in a room to fill it without leaving any gaps and without spawning patrols off-site?

Quote:

Originally Posted by Arcanaville Samuel_Tow is the only poster that makes me want to punch him in the head more often when I'm agreeing with him than when I'm disagreeing with him.

Xs are bosses, 0s are rescues, and filled in dots are any. The "boss" and "any" spawn points are where enemies normally spawn on a map, so in order to fill a room with an enemy group, you need to fill those. The "rescue" spawn points will remain empty unless you put something there.

You can tell how many you need by looking at the map info. Let's say you want to fill the front room with Crey. Your map allows 11 boss spawn points (3 front, 5 middle, 3 back) 6 rescues (1 front, 4 middle, 1 back) and 6 any detail (1 front, 4 middle, 1 back). You can ignore the rescue spawn points, add 4 Crey boss, destructible, or patrol details, and set them to "front" and you will have a front room full of Crey, unless one of the patrols moves before the player reaches them. You do not have to add any rescue details to make sure there is nothing but Crey in the front room.

You're just going to have to spawn the map as empty and manually fill in the mobs via spawn points. Then just fool around with the spawn points until you get some consistency.

One key is choosing a good map for your goal. Also remember outdoor maps don't have a front/mid/back. So they'd all be out. Just try and narrow it down. One cool thing is you can set up all the spawns/mission objectives then change the map repeatedly and see how it worked out. As long as the spawns fit of course.