[2.0.20] Walls connecting to space

[Phren]

Hi,

I've noticed when playing with rail gun turrets that the wall collision box is inconsistently "connecting" to empty space in a very unhelpful way.

Normally:

railgun_nohit.png (272.04 KiB) Viewed 1061 times

But if the corner piece has the "cross" of wall on it instead of being "flat":

railgun_hit.png (289.32 KiB) Viewed 1061 times

This reason some walls are crosses and some are not is to do with whether the empty platform was built the other side or not. The wall seems to try and connect to empty space, but not empty platform. Once the wall is built, removing the empty platform doesn't change the wall.

Thus you can work around this by building the corners where they are surrounded by platform, if you're having this problem. I think the walls should not try and connect to empty space though.

Cheers!
- Phren

[Rseding91]

Thanks for the report however since this does not break anything, is not causing crashes, save corruption, desyncs, or game balance issues I'm going to say this is a won't-fix.

[BraveCaperCat]

Does that mean you won't fix any visual issues? Because that's what your logic would imply.

[Rseding91]

Does that mean you won't fix any visual issues? Because that's what your logic would imply.

If they aren't causing any actual problems, yes.

[sp55aa]

Does that mean you won't fix any visual issues? Because that's what your logic would imply.

relax. there are other bugs worth to fix first. and this can avoid by rebuild wall

[FasterJump]

I was wondering if this would get some attention now that most major bugs has been resolved.

I think there are 2 minor issues here:

• Wall connection with empty space (depend on build order)
• Wall hitbox colliding with railgun target area

I think that the railgun projectile has a wide hitbox, so it can collide with smaller asteroids more easily. This is why it collides with walls that are not visually in the way. I don't really know how this could be fixed without having conditional hitboxes.

03-30-2025, 09-09-36.png (357.9 KiB) Viewed 160 times

[BraveCaperCat]

Does that mean you won't fix any visual issues? Because that's what your logic would imply.

If they aren't causing any actual problems, yes.

As noted below, this is now causing an actual problem.

I was wondering if this would get some attention now that most major bugs has been resolved.

I think there are 2 minor issues here:

• Wall connection with empty space (depend on build order)
• Wall hitbox colliding with railgun target area

I think that the railgun projectile has a wide hitbox, so it can collide with smaller asteroids more easily. This is why it collides with walls that are not visually in the way. I don't really know how this could be fixed without having conditional hitboxes.

03-30-2025, 09-09-36.png

[FasterJump]

Well it's (these are) a (some) very minor issue(s). Annoying to some (including me), yes, but objectively small.

Also I said I didn't know how this could be fixed... but I'll share some thoughts.

1. Railgun projectile hitbox can't be made smaller, as these needs to hit many asteroids for performance/balance purposes, I believe.
2. Asteroid hitbox can't be made bigger, or it would collide with the ship too often.
3. So... walls? No, wall hitbox can't be made smaller, or biters would sneak through. Unless...
4. To compensate, make spitter projectile hitbox larger + biter melee attack range bigger.
5. Dozen of bug reports arise from unexpected wall and enemies hitbox issues

Or just be smarter, for example, whenever a railgun collides with a wall (or any building really), instead of taking damage, run the collision test again, this time with a smaller projectile hitbox. This shouldn't affect performance, as it would happen maybe just once per minute per turret.

Or give walls 2 hitboxes: one for railgun projectiles, one for everything else?

In any case, the source of this "issue" is the oversized railgun projectile hitbox (needed for performance).