Collision Boxes with Vehicles Broken

Element457 · September 21, 2015, 1:08am

I’m using the latest verison of Unreal (4.9.1), and it appears the Collision Boxes are broken when using with a Wheeled Vehicle. Even with gravity and physics turned off the Collision Box, the functionality doesn’t appear to work. For example, if you place a collision box well above the vehicle (no overlap) the vehicles just flips out of control continuously. Again, it seems the vehicles need a lot of TLC in the near future.

Additionally, I may be using this part wrong, but Event Hit does not seem to be working with Wheeled Vehicles either. Hit Location, Hit Normal, Normal Impuse, Self Moved always report identical numbers between two colliding wheeled vehicles, even when one is stationary.

anonymous_user_e729f54e · September 21, 2015, 4:09pm

Hello ,

I have a few questions for you that will help narrow down what issue it is that you are experiencing.

Can you reproduce this issue in a clean project?
If so, could you provide a detailed set of steps to reproduce this issue on our end?
Could you provide screen shots of any blueprints that may be involved with this issue?

Element457 · September 21, 2015, 5:58pm

The Event Hit is still the same issue, but the collision box appears to only being affecting models we import. Do you know why this would be? Again, there is no overlap, so I’m not sure why it would spiral out of control.

anonymous_user_e729f54e · September 21, 2015, 6:42pm

Hello ,

For the collision issue could you try turning off “auto-weld”? As for the event hit issue. I will need more information to help narrow it down. Could you provide steps to reproduce this issue on our end?

Element457 · September 21, 2015, 6:47pm

Hi Rudy,

Looks like Auto Weld did the trick! I could have sworn that I had toggled that off. As for the Event Hit, I’m simply outputting the Hit Location and Hit Impulse to a print string then hitting the cars together. Both cars always provide identical information, no matter which is moving or where it is hit. Given, it may just be my lack of understanding with Event Hits.

anonymous_user_e729f54e · September 21, 2015, 7:23pm

Hello ,

Could you provide screen shots of the blueprints that are being used?

Element457 · September 21, 2015, 7:33pm

Sure – here’s the screenshot of the Event Hit.

59604-event+hit+reference.png

anonymous_user_e729f54e · September 22, 2015, 3:36pm

Hello ,

I was unable to reproduce this part of the issue on our end. Would it be possible for you to provide a zipped down copy of your project so that I could take a closer look. You can send it in a private message on the forums if needed. You can do so using dropbox or google drive.

Element457 · September 22, 2015, 6:51pm

Hi Rudy,

Sure thing! I have the project zipped. How should I send it through a private message or share the project from Google Drive? We use Google Drive so that might be easiest to just share a copy of it with you.

anonymous_user_e729f54e · September 22, 2015, 7:59pm

Hello ,

You can send me the link to the google drive, either in a reply to this thread or in a private message on the forums. Either choice will be fine.

Element457 · September 22, 2015, 11:02pm

Hi Rudy,

I just sent you a private message from the forums with the link.

anonymous_user_e729f54e · September 28, 2015, 8:34pm

Hello ,

The hit location is going to be the same for each vehicle in this case because it is returning the world location. This means that it will return the location of the impact between the two vehicles. I hope that this helps.