better debug collision markers

[yankscally]

Describe the project you are working on

n/a

Describe the problem or limitation you are having in your project

it looks bad

These red triangular markers that happen when 2 bodies collide, I think they could look better!

Describe the feature / enhancement and how it helps to overcome the problem or limitation

Using a different, better shape, maybe another shape type, and scaling these shapes based on camera position or something to that effect.

Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

n/a

If this enhancement will not be used often, can it be worked around with a few lines of script?

n/a

Is there a reason why this should be core and not an add-on in the asset library?

Its fixing an issue with core

[Calinou]

Moving to discussion, as there is no concrete technical implementation provided.

I agree the current collision contact debug draw isn't optimal, as the lack of shading (even fake contrast) makes it impossible to distinguish the individual faces. We should be able to resolve this by using split faces when constructing the mesh, then enabling vertex colors on the material and defining different vertex colors for each face. This way, the material remains unshaded, which ensures it looks the same regardless of lighting conditions.

Note that in your particular example, collision contacts appear huge relative to the shape's size. We could have a project setting to adjust the contact's size, as some projects work on a smaller scale than others.

Collision contacts are drawn as a MultiMeshInstance setup here:

https://github.com/godotengine/godot/blob/7716a4cba0e4d96e170488bd4f332d22395f7bdb/scene/main/viewport.cpp#L599-L607

[yankscally]

what do you mean by technical implementation? and if I provide one, can we put it back as a proposal?

[yankscally]

What shape to replace it with is debatable but we can agree that the shape is not optimal or nice looking, has missing faces, and we cannot change the color or any other properties of this. You can't even turn it off.

I can make a proposal for each of these things but the greater issue is they are not very good.

It would be much better if I could turn them off, and use my own collision contact gizmos, but that is not an option unless I completely disable debug shapes, which defeats the point.

[Calinou]

It would be much better if I could turn them off, and use my own collision contact gizmos, but that is not an option unless I completely disable debug shapes, which defeats the point.

You can set the debug/shapes/collision/max_contacts_displayed project setting to 0. This should disable contact display while preserving contact reporting functionality.