Opening doors by killing enemies

I'm making a map for sven coop, and i want a door to open after i kill 3 headcrabs. How do i do that?

Carcase said:
I'm making a map for sven coop, and i want a door to open after i kill 3 headcrabs. How do i do that?

hmm is there not a tick mark you can check in properties that says "kill if blocked?"

try looking for it..

[edit]

me removes yellow answer, to reduce level of my stupid reply :

I think it has something to do with a the headcrab's option of "trigger when killed" (or something like this) targeting multisource which in turn activates the door you want to open. Gollum will know the answer.

Well ill just put this as an answer :biggrin: in hopes of solving one's enigma.

I've never used this, but a peek at monster_xxx properties suggests that you use the "trigger target" and "trigger condition" keys. For each headcrab, point "trigger target" to a trigger_counter (set to 3 counts) and select "death" as the trigger condition.

The trigger_counter then targets the master entity of the door (that is, a global or multisource or something like this). The master changes state to "on", which allows the door to open.

There gollum is the master at this stuff, that is what I was trying to say. :biggrin:

Or a good old multisource setup should suffice! :smile:

omegaslayer4777 said:
There gollum is the master at this stuff, that is what I was trying to say. :biggrin:

/me blushes

heh, ok ok i should have just looked a little harder. Yeah its the trigger death things.

Well, multisource will do it if there are 3 crabs to kill. If trere are, say 5 crabs and you want to open the door when any 3 of them are dead you have to use a counter.