I expect worms on Nauvis to shoot their projectiles in the direction of a player's movement calculated to land where the player will be if they continue in that direction at their current speed, to shoot at a stationary character where they are standing, and to update their aim with each shot.
Instead, I see worms visually orient themselves to aim at the player (based on the direction they lean when they fire the projectile), but the projectiles goes in the previously calculated direction and continues to land in the same place without updating based on the player changing direction or stopping moving altogether. When a worm fires a barrage of repeated shots, sometimes all of the shots will go to the wrong target until the worm pauses and starts a new barrage; other times the projectiles will start to shoot at the player correctly again during the same barrage. The duration of "stuck trajectory" is inconsistent.
I have observed this behavior with all worms except small worms, but never on spitters. It happens frequently, but not 100% of the time (that I can tell). For a group of worms firing at the same player, only some of the worms will get stuck at a time. I have seen this happen with and without armor equipped and with and without the space age mods (Space Age, Elevated Rails, and Quality).
[Rseding91] [2.0.42] Worm aims at target player but projectile shoots in previous direction
[Rseding91] [2.0.42] Worm aims at target player but projectile shoots in previous direction
- Attachments
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- worm aim bug report setup file.zip
- (26.82 MiB) Downloaded 12 times
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- factorio-current_usernameremoved.txt
- Username replaced with "usernameremoved" in file path
- (8.14 KiB) Downloaded 13 times
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- Factorio 2.0.42 Worm Target Bug.mp4
- Single behemoth worm isolated
- (15.71 MiB) Downloaded 20 times
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- Factorio 2.0.42 Multiple Worm Target Bug.mp4
- Multiple worms, worms from small to behemoth, variations in stuck trajectory
- (16.86 MiB) Downloaded 17 times
Last edited by RATJARR on Fri Mar 21, 2025 8:08 pm, edited 3 times in total.
Re: [2.0.42] Worm aims at target player but projectil shoots in previous direction
Post the save please, see 3638.
Re: [2.0.42] Worm aims at target player but projectil shoots in previous direction
The issue does not seem dependent on gameplay or save file. I have seen it with and without Space Age, Elevated Rails, and Quality modes enabled (base game only), and I have seen it in multiple game save files. Does this report still need a game file in that case? (Edit: created and added a file)
- Attachments
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- worm aim bug report setup file.zip
- (26.82 MiB) Downloaded 13 times
Re: [Rseding91] [2.0.42] Worm aims at target player but projectile shoots in previous direction
Thanks for the report. This is now fixed for the next release.
If you want to get ahold of me I'm almost always on Discord.