Physics Objects Falling Through Floor

Development Programming & Scripting Blueprint
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1

I’ve been seeing this issue frequently after spending significant time on different projects.

It seems that adding physics simulated objects or physics constraints to the level could be causing this.

The issue is not present when I start the project but seems to appear after I start duplicating those chamfer cubes enough times or adding different physics simulated objects or physics constraints.

In this example there are not many physics simulated objects in the level but the issue may have been triggered by the use of physics objects (that have since been deleted).

Once the issue appears, I have been unable to find a way to reverse it or prevent it from persisting.

I have tried the advanced options like enabling CCD and different combinations of those options, but have not seen any effects from that.

Anyone else experienced this or found a way to resolve it?

2

You can either reduce the mass of your character so that it give less force on the physics objects or increase the mass of the cube/car.

3

Changing the mass of my character or the object did not work. Object is still falling through the floor.

It’s unusual because they worked fine before and suddenly started behaving like this.

I didn’t make any changes to the cubes or car.

Some other things I added into the level seemed to cause a problem with the way these physics actors/(the game physics in general) are behaving.

Any other ideas?

It’s very frustrating to have this happen so often as I start progressing through a new project.

4

I’ve seen someone met this problem. he was holding several physics actors with a box ,and then those actors fell through the box. He said he increased the thick of box, so solved. I was watching. Didn’t try it. Hope this information could help

5

Interesting Suggestion. I increased the floor thickness. Unfortunately the objects still clip into the ground. They don’t fall all the way through now, but still not a good solution.

I tried changing the mass on the chamfer cube to 99999.

It seems to have no effect at all. It still moves around as though it was the original mass.

Something is bugged with the physics. All the physics objects are moving around as though they are much less heavy than they used to be/are supposed to be.

6

I had the same problem.
Blue boxes falling through the floor and clipping into themselves when I stood on them.

I had a blueprint for them. So I’ve entered it, changed in collision for static mesh “Collision preset” to “Pawn” and it worked for me.

7

Has anyone ever found an accepted solution for this issue? I have been searching everywhere.

8

Hey @MitchellSwaney

I had the same issue with clipping through the floor.
Checking the Collision Settings resolved the problem.

My approach:

Checked the Collision Settings on the Character.
Physics/Collision/Mesh

I set the Collision Presets on the Mesh to “CharacterMesh” and this resolved my glitching issue.