Portal 2 Bug: Fling Crash in sp_a3_end

[JVGRYT]

Describe the bug

I ran into a bug during my gameplay of Portal 2 with only the paintgun (min portals). In the map sp_a3_end, there is a point further into the map where once you fling yourself, the game crashes. I've attached a video to make the location easier to explain. https://github.com/StrataSource/Portal-2-Community-Edition/assets/92970602/f7700404-d6c8-4dc7-b6ab-bdc981cde67a This crash makes the game unbeatable without using cheats.

To Reproduce

1. Open sp_a3_end
2. Progress to the point in the map shown in the video
3. Use the gels to fling yourself
4. Crash

Operating System

No response

[pivotman319-owo]

crash confirmed on latest QA build, appears to only occur if weapon_paintgun is held by the player and if they granted themselves upgrades (via upgrade_paintgun) before switching out to a different weapon

[JVGRYT]

crash confirmed on latest QA build, appears to only occur if weapon_paintgun is held by the player and if they granted themselves upgrades (via upgrade_paintgun) before switching out to a different weapon

That's quite intriguing, I'd be interested to know why that happens 🤔

[craftablescience]

This crash happens regardless of held weapons, however it is also random. You probably rolled the dice and got lucky the first time

[JVGRYT]

This crash happens regardless of held weapons, however it is also random. You probably rolled the dice and got lucky the first time

Yes, but it is definitely consistent with the paintgun held, as far as I've tested it That or I've been unlucky at least ten times in a row

However, I think I do recall this crash happening in a casual playthrough in P2:CE, but I reloaded the game and it worked fine so I ended up forgetting about it and I never made an issue about it

[craftablescience]

This crash happens regardless of held weapons, however it is also random. You probably rolled the dice and got lucky the first time

Yes, but it is definitely consistent with the paintgun held, as far as I've tested it That or I've been unlucky at least ten times in a row

However, I think I do recall this crash happening in a casual playthrough in P2:CE, but I reloaded the game and it worked fine so I ended up forgetting about it and I never made an issue about it

It has nothing to do with holding the paintgun, it's a crash in the physics code. I imagine it's more likely to crash than not. If you don't go through those portals you should be fine

[JVGRYT]

This crash happens regardless of held weapons, however it is also random. You probably rolled the dice and got lucky the first time

Yes, but it is definitely consistent with the paintgun held, as far as I've tested it That or I've been unlucky at least ten times in a row However, I think I do recall this crash happening in a casual playthrough in P2:CE, but I reloaded the game and it worked fine so I ended up forgetting about it and I never made an issue about it

It has nothing to do with holding the paintgun, it's a crash in the physics code. I imagine it's more likely to crash than not. If you don't go through those portals you should be fine

Ok, that makes sense

And yea, I use noclip to get past both of the triggers that trigger the catapault, and it flings me properly

[JJL772]

Can you try with traceray_force_vphysics 0?

[JVGRYT]

Can you try with traceray_force_vphysics 0?

I'll give it a shot when I get home

[JVGRYT]

Can you try with traceray_force_vphysics 0?

Alright, I gave it a shot. While I had it set to 0, the crash didn't happen at all. But as soon as I turned it back on and re-entered the portal, it crashed again.