Why does Godot Tween pause lose progress?

Tween's pause_mode default = TWEEN_PAUSE_BOUND, follows host. If host pauses with the tree, tween pauses; resume picks up. If you call kill() instead of pause(), state is lost.

pause() retains state; play() resumes. stop() resets to start. kill() ends entirely. Pick by intent.

Process while paused?

Set pause_mode TWEEN_PAUSE_PROCESS to keep ticking through scene tree pause. Useful for paused-menu animations.

Fix: Godot Tween Pause Resume Loses Progress

Quick answer: tw.pause() and tw.play() retain state. set_pause_mode controls behavior under tree pause.

Tween animation pauses with menu. Resume restarts from beginning. You called stop() instead of pause().

The Fix

var tw = create_tween()
tw.set_pause_mode(Tween.TWEEN_PAUSE_PROCESS)   # run through pause
tw.tween_property(node, "modulate:a", 1.0, 1.0)

# Later
tw.pause()    # retains progress
await some_event
tw.play()     # resumes from pause

pause/play preserve internal time. stop/play restart. Pick mode based on whether tween should run through tree pause.

Verifying

Pause mid-tween. Resume continues smoothly.

“pause/play. Stop = reset.”

Related Issues

For Tween bounce, see bounce. For Tween freed, see freed.

pause/play. State holds.