Crater not created where impact happened

[b-mayr-1984]

A strange thing happens when playing on the GRAD server (not when I host the server locally on my machine).

Where shells land and where the crater is created is just roughly in the same vicinity, but not accurate.

This does not happen when using the Zeus module for 155mm artillery fire support (or 82mm mortar for that matter). But it happens when firing artillery yourself or let AI fire it.

[b-mayr-1984]

Problem also shows in last game night's video footage.

The black impact crater textures don't show any brown dirt texture, nor do they show terrain deformation.

Proper craters would look like this:

[b-mayr-1984]

@diwako do you have any idea what could be wrong?

As far as I understand you are simply passing the _pos you get from the Explode event.

[b-mayr-1984]

Also the footage from the Proof of Concept game night shows the problem. (Given this was the first game we played I guess it is safe to assume the problem has been there from the beginning.)

[b-mayr-1984]

Here's a theory:

The craters are actually correct but the smoke and black texture land on the wrong position. When I watch the footage from the 2 game nights it becomes apparent:

• that dirt craters are always closer clustered to the target containers compared to the black crater textures.
• players have complained about the D30J artillery being very inaccurate
  • but maybe just the splash animation is wrong and the actual hit is closer

Need to test the following:

• [x] with BIS_fnc_traceBullets turned on
• [x] test with vanilla Arma artillery pieces (it could simply be a bug of the D30J)

[b-mayr-1984]

Bullet traces (BIS_fnc_traceBullets) agree with the Vanilla splash texture, not the crater. 🤔 D30J was used

[b-mayr-1984]

Vanilla assets show the same problem. So it is not a problem of modded artillery only.

Tested with:

• MK6 mortar
• Sholef tracked artillery (see screenshot below)

[b-mayr-1984]

Some more insight:

The grass cutter seems to be properly placed. Just the crater isn't.

[b-mayr-1984]

A minimalist mission to create the problem can be found in Crater_bug.VR.zip. It only requires CBA on both server and client in order to reproduce the problem.

Reproduction steps:

1. take the only slot that is available
2. use MK6 mortar via Artillery Computer and shot the opposite side of the pond
3. observe the impact texture vs. the crater (e.g. using Zeus view)
4. repeat step 2. and 3. if problem is not clearly shown on first try.

[b-mayr-1984]

This has been reported by @dedmen as fixed from BI side.

Fix can be expected in production soon (see conversation on Discord).

[b-mayr-1984]

Fix is on dev-branch by now. https://forums.bohemia.net/forums/topic/140837-development-branch-changelog/?do=findComment&comment=3477416

[b-mayr-1984]

Fix should be on Stable now. https://dev.arma3.com/post/spotrep-00111

I will close this issue once successfully tested.

[b-mayr-1984]

Awesome, it works! 😃 @dedmen you're the best! 👍

Tested using this version on both client and server.

Build: Stable
Version: 2.14.150957