app.js

@@ -1210,6 +1210,15 @@ document.addEventListener('keydown', (e) => {
   }
 });
 
+// === ANIMATION FOR ENERGY BEAM PULSE ===
+let energyBeamPulse = 0;
+
+function animateEnergyBeam() {
+  energyBeamPulse += 0.02;
+  const pulseEffect = Math.sin(energyBeamPulse) * 0.3 + 0.7;
+  energyBeamMaterial.opacity = 0.3 + pulseEffect * 0.4;
+}
+
 // === RESIZE HANDLER ===
 window.addEventListener('resize', () => {
   camera.aspect = window.innerWidth / window.innerHeight;
@@ -1312,6 +1321,27 @@ async function loadSovereigntyStatus() {
 
 loadSovereigntyStatus();
 
+// === ENERGY BEAM FOR BATCAVE TERMINAL ===
+// Vertical energy beam from Batcave terminal area to the sky with animated opacity and pulse effect.
+const ENERGY_BEAM_RADIUS = 0.2;
+const ENERGY_BEAM_HEIGHT = 100;
+const ENERGY_BEAM_Y = 0;
+const ENERGY_BEAM_X = -3;
+const ENERGY_BEAM_Z = -3;
+
+const energyBeamGeometry = new THREE.CylinderGeometry(ENERGY_BEAM_RADIUS, ENERGY_BEAM_RADIUS, ENERGY_BEAM_HEIGHT, 32);
+const energyBeamMaterial = new THREE.MeshBasicMaterial({
+  color: NEXUS.colors.accent,
+  transparent: true,
+  opacity: 0.5,
+  blending: THREE.AdditiveBlending,
+  side: THREE.DoubleSide,
+  depthWrite: false
+});
+const energyBeam = new THREE.Mesh(energyBeamGeometry, energyBeamMaterial);
+energyBeam.position.set(ENERGY_BEAM_X, ENERGY_BEAM_Y + ENERGY_BEAM_HEIGHT / 2, ENERGY_BEAM_Z);
+scene.add(energyBeam);
+
 // === RUNE RING ===
 // 12 Elder Futhark rune sprites in a slow-orbiting ring around the center platform.
 
@@ -2031,6 +2061,7 @@ const clock = new THREE.Clock();
 function animate() {
   // Only start animation after assets are loaded
   requestAnimationFrame(animate);
+  animateEnergyBeam();
   const elapsed = clock.getElapsedTime();
 
   // Smooth camera transition for overview mode