fix: prevent exception when loading glTF files that use KHR_animation…

…_pointer extension

fix: don't return, instead just skip the animations that aren't supported

examples/jsm/loaders/GLTFLoader.js

@@ -3625,6 +3625,7 @@ class GLTFParser {
 		const json = this.json;
 
 		const animationDef = json.animations[ animationIndex ];
+		const animationName = animationDef.name ? animationDef.name : 'animation_' + animationIndex;
 
 		const pendingNodes = [];
 		const pendingInputAccessors = [];
@@ -3641,6 +3642,17 @@ class GLTFParser {
 			const input = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.input ] : sampler.input;
 			const output = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.output ] : sampler.output;
 
+			if ( target.node === undefined ) {
+
+				if ( target.extensions && target.extensions[ 'KHR_animation_pointer' ] ) {
+
+					console.warn( 'THREE.GLTFLoader: KHR_animation_pointer is not yet supported.' );
+
+				}
+
+				continue;
+			}
+
 			pendingNodes.push( this.getDependency( 'node', name ) );
 			pendingInputAccessors.push( this.getDependency( 'accessor', input ) );
 			pendingOutputAccessors.push( this.getDependency( 'accessor', output ) );
@@ -3778,9 +3790,7 @@ class GLTFParser {
 
 			}
 
-			const name = animationDef.name ? animationDef.name : 'animation_' + animationIndex;
-
-			return new AnimationClip( name, undefined, tracks );
+			return new AnimationClip( animationName, undefined, tracks );
 
 		} );