From 320e43223f292219a031560afe2e0e2a91a39496 Mon Sep 17 00:00:00 2001
From: Michael Herzog <michael.herzog@human-interactive.org>
Date: Tue, 3 Mar 2026 16:02:59 +0100
Subject: [PATCH] Editor: Improve animation panel. (#33110)

---
 editor/js/Animation.js                | 48 +++++++++++++++++++++------
 editor/js/commands/SetSceneCommand.js |  1 +
 2 files changed, 39 insertions(+), 10 deletions(-)

diff --git a/editor/js/Animation.js b/editor/js/Animation.js
index 7be0cb1f04426d..adad37911cac20 100644
--- a/editor/js/Animation.js
+++ b/editor/js/Animation.js
@@ -1,10 +1,12 @@
-import { UIPanel, UIText, UIButton } from './libs/ui.js';
+import { UIPanel, UIText, UIButton, UINumber } from './libs/ui.js';
 
 import { AnimationPathHelper } from 'three/addons/helpers/AnimationPathHelper.js';
 
 function Animation( editor ) {
 
 	const signals = editor.signals;
+	const strings = editor.strings;
+	const mixer = editor.mixer;
 
 	const container = new UIPanel();
 	container.setId( 'animation' );
@@ -33,9 +35,9 @@ function Animation( editor ) {
 	container.add( controlsPanel );
 
 	// SVG icons
-	const playIcon = `<svg width="12" height="12" viewBox="0 0 12 12"><path d="M3 1.5v9l7-4.5z" fill="currentColor"/></svg>`;
-	const pauseIcon = `<svg width="12" height="12" viewBox="0 0 12 12"><path d="M2 1h3v10H2zM7 1h3v10H7z" fill="currentColor"/></svg>`;
-	const stopIcon = `<svg width="12" height="12" viewBox="0 0 12 12"><rect x="2" y="2" width="8" height="8" fill="currentColor"/></svg>`;
+	const playIcon = '<svg width="12" height="12" viewBox="0 0 12 12"><path d="M3 1.5v9l7-4.5z" fill="currentColor"/></svg>';
+	const pauseIcon = '<svg width="12" height="12" viewBox="0 0 12 12"><path d="M2 1h3v10H2zM7 1h3v10H7z" fill="currentColor"/></svg>';
+	const stopIcon = '<svg width="12" height="12" viewBox="0 0 12 12"><rect x="2" y="2" width="8" height="8" fill="currentColor"/></svg>';
 
 	const playButton = new UIButton();
 	playButton.dom.innerHTML = playIcon;
@@ -130,6 +132,17 @@ function Animation( editor ) {
 	const durationText = new UIText( '0.00' ).setWidth( '36px' );
 	timeDisplay.appendChild( durationText.dom );
 
+	// Time Scale
+	const mixerTimeScaleNumber = new UINumber( 1 ).setWidth( '60px' ).setRange( - 10, 10 );
+	mixerTimeScaleNumber.onChange( function () {
+
+		mixer.timeScale = mixerTimeScaleNumber.getValue();
+
+	} );
+
+	controlsPanel.add( new UIText( strings.getKey( 'sidebar/animations/timescale' ) ).setClass( 'Label' ) );
+	controlsPanel.add( mixerTimeScaleNumber );
+
 	// Timeline area with track rows
 	const timelineArea = document.createElement( 'div' );
 	timelineArea.style.flex = '1';
@@ -440,6 +453,7 @@ function Animation( editor ) {
 						trackTimeline.appendChild( keyframe );
 
 					}
+
 					trackRow.appendChild( trackTimeline );
 
 					// Hover on position tracks to show path helper
@@ -485,13 +499,27 @@ function Animation( editor ) {
 
 		}
 
-		// Select clip without playing
-		currentClip = clip;
-		currentRoot = root;
-		currentAction = editor.mixer.clipAction( clip, root );
+		if ( currentClip === clip ) {
 
-		// Update duration display
-		durationText.setValue( clip.duration.toFixed( 2 ) );
+			// Unselect clip
+			currentAction = null;
+			currentClip = null;
+			currentRoot = null;
+
+			timeText.setValue( '0.00' );
+			durationText.setValue( '0.00' );
+
+		} else {
+
+			// Select clip without playing
+			currentClip = clip;
+			currentRoot = root;
+			currentAction = editor.mixer.clipAction( clip, root );
+
+			// Update duration display
+			durationText.setValue( clip.duration.toFixed( 2 ) );
+
+		}
 
 	}
 
diff --git a/editor/js/commands/SetSceneCommand.js b/editor/js/commands/SetSceneCommand.js
index 284c7ad07dcaed..56338a11e02446 100644
--- a/editor/js/commands/SetSceneCommand.js
+++ b/editor/js/commands/SetSceneCommand.js
@@ -24,6 +24,7 @@ class SetSceneCommand extends Command {
 			this.cmdArray.push( new SetUuidCommand( this.editor, this.editor.scene, scene.uuid ) );
 			this.cmdArray.push( new SetValueCommand( this.editor, this.editor.scene, 'name', scene.name ) );
 			this.cmdArray.push( new SetValueCommand( this.editor, this.editor.scene, 'userData', JSON.parse( JSON.stringify( scene.userData ) ) ) );
+			this.cmdArray.push( new SetValueCommand( this.editor, this.editor.scene, 'animations', scene.animations ) );
 
 			while ( scene.children.length > 0 ) {