Allow access to PhysicsDirectSpaceState3D from outside the main thread.

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#973 3 comments 0 reactions 1 assignee View on GitHub

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@Arctis-Fireblight is already working on this.

Since Sep 14, 2026.

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Description

discussion enhancement topic:physics
Tested versions

This issue is present when using a physics engine module such as GodotPhysics or the new JoltPhysics module.
This is not an issue when using Jolt physics as a GDExtension.

System information

Windows 11

Issue description

The following code prevents access to the PhysicsDirectSpaceState3D outside of the main thread, https://github.com/Redot-Engine/redot-engine/blob/da61fa2c4549ca21d4ee13031177593280395c74/servers/physics_server_3d_wrap_mt.h#L116-L120

I don't believe this check is necessary as there is another check later that verifies that the space state is available, https://github.com/Redot-Engine/redot-engine/blob/da61fa2c4549ca21d4ee13031177593280395c74/modules/jolt_physics/jolt_physics_server_3d.cpp#L233-L239

Removing the main thread check in a custom build allows my project to work with the integrated Jolt physics module just as it does with the GDExtension version.

Steps to reproduce

Attempt a raycast from a thread or from a node running on a sub thread group.

Minimal reproduction project (MRP)

N/A

Dominant language
C++
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