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IDProjectCategoryView StatusLast Update
0004002The Dark ModAIpublic16.11.2016 15:05
Reportergrayman Assigned Tograyman  
Status resolvedResolutionfixed 
Product VersionTDM 2.03 
Target VersionTDM 2.05Fixed in VersionTDM 2.05 
Summary0004002: Review Stealth Score Reporting
DescriptionSince AI can land on states 1, 2, 3, and 4 on their way to state 5, it's probably not fair that each state contribute to the stealth score.

Prior to 1.08, an AI spotting the player could immediately leap all the way to state 5, so the score would reflect that. But players complained about the AI's rapid response, so player detection is now a ramping-up process that produces the 1->2->3->4 situation.

We should investigate this and see if there's a fairer way of representing stealth, at least as far as spotting the player is concerned.
Additional InformationOne solution would be to only register the highest alert state reached with the stats module, and do that once the AI has returned to state 0. Each climb and drop in alert level would then represent an "encounter". A "sighting" would still be reserved for having arrived at state 5 (combat).

When the player dies, we'd need to collect last-minute registrations from AI who are in a state > 0, so that the stealth score is accurate at the end of the mission. (Those AI won't be given a chance to naturally drop back to state 0.)
TagsNo tags attached.


related to 0004222 assigned Might be a Mission Stats problem with registering alerts 
has duplicate 0004415 closedgrayman Mandrasola no longer instant-fails on spotted objectives 




02.01.2015 14:46

viewer   ~0007294

Note from demagogue:

"Just on the stealth score, for future reference, when rising levels are connected, it might be good to have the system register the highest alert and cap it there, until it goes back down to zero, then the system resets. Then running and hiding won't be more costly than coming into view and fighting.

But it has to be thought out too. A player should expect a higher score if they prolong the running too much, so it could recount after maybe 30 sec or so as well."


26.12.2015 02:38

viewer   ~0007916

Moving to 2.05 because it's a large design change which could hinder getting 2.04 out in a timely manner.


10.08.2016 18:16

viewer   ~0008256

For now, I'm not going to introduce a addition to the stealth score for running around for 30s or more while spotted. This represents a new way of looking at things, and means creating future registration events based on timers, and knowing when to disable those timers if the player manages to hide before the timers run out.

It's too much for me to add timers and their maintenance at this stage.


11.08.2016 12:43

viewer   ~0008258

Track alert events in a list for each AI, and register meaningful alerts when the AI returns to Idle State or the player reaches Mission Complete. Measure the amount of time the AI spends in each Alert State as it rises toward Combat, and only register those that indicate the AI spent “some time” there before rising again. “Some time” is defined as half the time allotted for ramping down in each Alert State, with both Searching and Agitated Searching clamped at 10s.

Rev. 6609:



10.11.2016 14:06

developer   ~0008464

Last edited: 10.11.2016 14:06

Anyone checked that sighting objective still fails after this change?



10.11.2016 14:32

viewer   ~0008465

Do you have evidence that it fails, or are you asking because you looked at the code and found something wrong?


10.11.2016 14:41

developer   ~0008466

How about this for evidence - a guard sees player and attacks but the objective does not fail? Map is Talbot Collateral here.


10.11.2016 15:34

viewer   ~0008467

Last edited: 16.11.2016 15:05

Good evidence. I'll look at the objectives in that map and see what's happening.

Edit: An optional objective in Difficult mode is to not have any AI rise to an alert level of 5 (Combat) because of the player.

If the guard is attacking, and no "objective failed" message is displayed, then there's a problem.

I'll look at this today.



10.11.2016 16:27

viewer   ~0008468

The problem lies in waiting until the AI returns to alert level 0 before registering the highest alert level attained.

An objective like this optional objective needs to be registered immediately, instead of waiting for the AI to return to 0.

Perhaps a better way to solve the OP problem is to register the alert level changes, but to have lower alert levels removed from the Statistics math when they are overridden by a higher alert level in the same alert cycle. (I.e. don't wait until returning to level 0 to register.)


15.11.2016 16:32

viewer   ~0008484

Last edited: 16.11.2016 15:04

Now the registration occurs immediately, but if a subsequent alert on the same cycle (the time between being at Idle, rising in alert level, and falling back to Idle) occurs, the “counting” of the previous alert is undone, based on some time durations between alert N and alert N+1.

Rev. 6671:


Issue History

Date Modified Username Field Change
01.01.2015 15:07 grayman New Issue
02.01.2015 14:46 grayman Note Added: 0007294
29.09.2015 00:03 grayman Relationship added related to 0004222
17.10.2015 18:54 grayman Assigned To => grayman
17.10.2015 18:54 grayman Status new => assigned
26.12.2015 02:38 grayman Note Added: 0007916
26.12.2015 02:38 grayman Target Version TDM 2.04 => TDM 2.05
10.08.2016 18:16 grayman Note Added: 0008256
11.08.2016 12:43 grayman Note Added: 0008258
11.08.2016 12:43 grayman Status assigned => resolved
11.08.2016 12:43 grayman Resolution open => fixed
11.08.2016 12:43 grayman Fixed in Version => TDM 2.05
10.11.2016 14:06 duzenko Note Added: 0008464
10.11.2016 14:06 duzenko Note Edited: 0008464
10.11.2016 14:32 grayman Note Added: 0008465
10.11.2016 14:41 duzenko Note Added: 0008466
10.11.2016 15:34 grayman Note Added: 0008467
10.11.2016 15:44 grayman Note Edited: 0008467
10.11.2016 16:27 grayman Note Added: 0008468
13.11.2016 04:33 grayman Relationship added has duplicate 0004415
15.11.2016 16:32 grayman Note Added: 0008484
16.11.2016 15:04 grayman Note Edited: 0008484
16.11.2016 15:05 grayman Note Edited: 0008467