Bug: Studiomdl vcafile produces incorrectly-mapped flexes

[koerismo]

Describe the bug

Creating a vertex animation with the vcafile parameter will cause only the second half of the animation to play at half speed when driven with $boneflexdriver. This issue only affects the hammer model viewer and game.

To Reproduce

Sample model: models.zip

• The range 0 1 was used for the tx/ty $boneflexdriver commands.
• The bone driver animation moves the bone from (1, 0, 0) to (1, 1, 0).

Issue Map

N/A

Expected Behavior

Vertex animations should display in-game as they do in HLMV.

Operating System

No response

[koerismo]

Update: $boneflexdriver on its own functions correctly! This issue resides with the vcafile parameter.