Bug with new constraint code

Development Character & Animation
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1

Dear Epic team,

I noticed that my angular velocity drive constraints did not work anylonger with the 4.13 version, so I investigated a bit in the code and found this in ConstraintDrives.cpp:

void FAngularDriveConstraint::SetAngularPositionDrive(bool InEnableSwingDrive, bool InEnableTwistDrive)
{
	SwingDrive.bEnablePositionDrive &= InEnableSwingDrive;
	TwistDrive.bEnablePositionDrive &= InEnableSwingDrive;
}

void FAngularDriveConstraint::SetAngularVelocityDrive(bool InEnableSwingDrive, bool InEnableTwistDrive)
{
	SwingDrive.bEnableVelocityDrive &= InEnableSwingDrive;
	TwistDrive.bEnableVelocityDrive &= InEnableSwingDrive;
}

Notice how it uses “InEnableSwingDrive” for both assignments instead of “InEnableTwistDrive”.

Thanks for reading.

2

Hey -

This is a known issue with an open report that you can find and view here: Unreal Engine Issues and Bug Tracker (UE-35634)

Cheers