Probability of presence and not alive

[allamawitharifle 10]

I have a mission with a lot of units probability of presence randomly selected and this seems to be causing chaos when I want to end the mission.

I have a trigger set to opfor present and then the condition field is...

count thislist <= 4 and ({alive _x} count crew armoura1 == 0)[ and ({alive _x} count crew armoura2 == 0)

Then my activation field just runs a simple script.

What I want to do is check that there are no more than 4 units alive in the trigger and that all the crew of the armour is dead and then run the script.

Although the condition field works perfectly when both armoura1 and armoura2 (names given to the vehicles) exist but when they are not present in the mission due to their probability of presence then the trigger doesn't seem to consider the crew as dead so instead just lets the mission hang and will not activate the script.

How can I get around this?

Edited July 6, 2011 by aLlamaWithARifle

[CarlGustaffa 4]

Too tired to get into the problem, but, what's with the [ ?

[demonized 20]

try this: but i think this condition will cause trouble, untested, try it but dont get your hopes up.

much better to do this in a script since triggers beheave like scripts andway there is no real difference exept for the practcal one.

added check inside counts if !isNull armoura.... means if existing.

count thislist <= 4 and ({!isNull armoura1 AND alive _x} count crew armoura1) == 0 and ({!isNull armoura2 AND alive _x} count crew armoura2) == 0

[allamawitharifle 10]

The [ was an accident, from the [/code] tag, will remove it.

Will give Deomized line a go, shall report back soon :D

Edit - Nope doesn't seem to work, even tried a quick test mission with a trigger checking "isNull armoura1" and just firing a hint on the activation then setting the probability of armoura1 to 0% and that doesn't seem to work. Can't seem to get isNull to activate a trigger at all totally removing armoura1 and it still wouldn't activate the trigger

isNil "armoura1" works when the vehicle's probability is 0%... already tried

({isNil "armoura1" or alive _x} count crew armoura1 == 0)

This now works but only if the vehicle exists from the start and then the crew get killed, however if the vehicle does not exist from the beginning then the trigger doesn't fire.

Edited July 6, 2011 by aLlamaWithARifle

[demonized 20]

try:

(({(vehicleVarName _x) == "armoura1"} count vehicles) != 0 AND ({alive _x} count crew armoura1) == 0)

or:

({(vehicleVarName _x) == "armoura1" AND ({alive _x} count crew _x) == 0} count vehicles) != 0

[allamawitharifle 10]

With both of them the trigger only fires if the crew is dead and the vehicle was there from the start

[st_dux 26]

Your condition is failing because in the case that either armoura1 or armoura2 doesn't exist, one or both of those variables are undefined. This means that the engine does not know how to evaluate anything about these variables, leading to a boolean statement that returns neither true nor false. To fix the problem, you will need to declare these variables as null objects in the case that the vehicles don't show up.

In your init.sqf file, put the following code:

if (isNil "armoura1") then {armoura1 = objNull};
if (isNil "armoura2") then {armoura2 = objNull}

Now your original condition will work, as "crew objNull" returns an empty array (whereas "crew <undefined variable>" returns nothing).

[allamawitharifle 10]

@ST_Dux

Spot on, worked like a charm :D

Thanks a lot