Quick answer: Construct 3 platform behavior continues to read input during a cinematic? Behavior reads input directly; disable via Set Vector X/Y or use Custom Movement behavior for cinematics.
Cinematic camera fades in; player keeps walking from held-key input.
Disable inputs on the behavior
Action: Platform > Simulate control > Stop. Behavior ignores real input; only sim inputs work.
Or zero velocity
Set Platform vector X and Y to zero. Movement stops; held input no longer applies.
Use Custom Movement
For cinematic-controlled characters, swap to Custom Movement. Cleaner semantics for scripted motion.
“Behaviors are convenience. Cinematic moments are exceptions.”
Build a 'CinematicMode' family of actions: disables player input, locks camera, fades audio. Reusable across every cinematic.