If you don't mind me posting..I was just doing a stealth mission of my own and did some experimenting with AI
Issue usually is not so much if single AI detects you or not. It is what the mission maker does about it. Usual solution is to use detectedBy trigger to cover some area. That trigger has very low knowsabout treshold to activate it, usually around 0.8 or so.
Problem is, even if you shoot someone to back of the head with a silenced pistol, knowsAbout jumps instantly to 1.35, even if it is dead. That is enough to activate detectedBy trigger, and scripted consequences. (Edit: I am getting mixed results with this one. It might be possible to eliminate single NON GROUPED AI without getting detection, if headshot is perfect.)
Usually biggest issue is AI hearing. It can hear silenced shots, especially rifleshots 35-40m away. SMGs and pistols have a bit lower range.
Crawling can be usually heard from 12m away, walking crouched 23-30m away. There might be SMALL difference whether it is gravel (like road) or grass (forest).
AI of same group knows instantly when group member is killed (KN = 4), regardless of the group members distance or location (even if it is patrolling several meters behind others backs). Other AI groups does not know about it, unless they have other information (visual contact, or hearing range).
Usually in mission biggest issue is use of detectedBy triggers. I use it myself too due its simplicity, but it really doesnt work as it is "intended" imho.
I made a simple test mission. I see if I can attach it.
Edit: Attachment+some observations.
Issue usually is not so much if single AI detects you or not. It is what the mission maker does about it. Usual solution is to use detectedBy trigger to cover some area. That trigger has very low knowsabout treshold to activate it, usually around 0.8 or so.
Problem is, even if you shoot someone to back of the head with a silenced pistol, knowsAbout jumps instantly to 1.35, even if it is dead. That is enough to activate detectedBy trigger, and scripted consequences. (Edit: I am getting mixed results with this one. It might be possible to eliminate single NON GROUPED AI without getting detection, if headshot is perfect.)
Usually biggest issue is AI hearing. It can hear silenced shots, especially rifleshots 35-40m away. SMGs and pistols have a bit lower range.
Crawling can be usually heard from 12m away, walking crouched 23-30m away. There might be SMALL difference whether it is gravel (like road) or grass (forest).
AI of same group knows instantly when group member is killed (KN = 4), regardless of the group members distance or location (even if it is patrolling several meters behind others backs). Other AI groups does not know about it, unless they have other information (visual contact, or hearing range).
Usually in mission biggest issue is use of detectedBy triggers. I use it myself too due its simplicity, but it really doesnt work as it is "intended" imho.
I made a simple test mission. I see if I can attach it.
Edit: Attachment+some observations.