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AH-99 and Mi-48 constantly increasing flight altitude when they follow a waypoint
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Description

Combat helicopters (with gun seat) when they follow a waypoint, increasing altitude costantly; this always, if you place a single waypoint far or if you use multiple waypoints in cycle. {F22270}

Details

Legacy ID
2735009373
Severity
None
Resolution
Open
Reproducibility
Always
Category
AI Issues
Steps To Reproduce

With editor:
Add an AH99 or MI48 with the gunner playable.
Add one waypoint 'move' far to helicopter.
Play mission at gunner.

Additional Information

If you set timeout on waypoint, when the pilot reach wp and wait timeout the height decrease.

Event Timeline

Drugo edited Steps To Reproduce. (Show Details)Sep 24 2013, 7:28 PM
Drugo edited Additional Information. (Show Details)
Drugo set Category to AI Issues.
Drugo set Reproducibility to Always.
Drugo set Severity to None.
Drugo set Resolution to Open.
Drugo set Legacy ID to 2735009373.May 7 2016, 4:54 PM
Bohemia added a subscriber: AD2001.Sep 24 2013, 7:28 PM
Lambda.Tiger removed a subscriber: Lambda.Tiger.

I ran into this bug as well and did some digging on it. Running the game vanilla, no-optional CDLCs, no mods, current stable (2.10.149954). It seems that the attack helicopters try to keep their nose at the horizon (vectorUp at, or as close to 1 as possible). It's a little less obvious with the base helicopters, but the Kajman is the most obvious (also fairly obvious on CSLA attack helicopters, where I started down this rabbit hole). I don't know if it's worth the effort to fix since it's a gain in altitude of like 50 m every 4 km of flying, but attached is an example mission of this.