Initial commit: Lucidia Metaverse

Complete 3D metaverse platform with:
- Three.js 3D rendering
- Cannon.js physics engine
- Pointer lock controls
- Procedural cityscape
- Floating islands
- Portal system
- Particle effects
- WebXR/VR support ready
- Multiplayer ready (Socket.io)

Features:
- First-person controls (WASD + mouse)
- Jump and run mechanics
- Chat system
- Real-time HUD
- Loading screen
- Responsive design

Built with Vite for fast builds and hot reload.

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

node_modules/three/examples/jsm/nodes/accessors/SceneNode.js

@@ -0,0 +1,52 @@
+import Node from '../core/Node.js';
+import { addNodeClass } from '../core/Node.js';
+import { nodeImmutable } from '../shadernode/ShaderNode.js';
+import { reference } from './ReferenceNode.js';
+
+class SceneNode extends Node {
+
+	constructor( scope = SceneNode.BACKGROUND_BLURRINESS, scene = null ) {
+
+		super();
+
+		this.scope = scope;
+		this.scene = scene;
+
+	}
+
+	setup( builder ) {
+
+		const scope = this.scope;
+		const scene = this.scene !== null ? this.scene : builder.scene;
+
+		let output;
+
+		if ( scope === SceneNode.BACKGROUND_BLURRINESS ) {
+
+			output = reference( 'backgroundBlurriness', 'float', scene );
+
+		} else if ( scope === SceneNode.BACKGROUND_INTENSITY ) {
+
+			output = reference( 'backgroundIntensity', 'float', scene );
+
+		} else {
+
+			console.error( 'THREE.SceneNode: Unknown scope:', scope );
+
+		}
+
+		return output;
+
+	}
+
+}
+
+SceneNode.BACKGROUND_BLURRINESS = 'backgroundBlurriness';
+SceneNode.BACKGROUND_INTENSITY = 'backgroundIntensity';
+
+export default SceneNode;
+
+export const backgroundBlurriness = nodeImmutable( SceneNode, SceneNode.BACKGROUND_BLURRINESS );
+export const backgroundIntensity = nodeImmutable( SceneNode, SceneNode.BACKGROUND_INTENSITY );
+
+addNodeClass( 'SceneNode', SceneNode );