Add tentacles

src/App.vue

@@ -178,13 +178,17 @@
                   '--ray-hue': rayHue.toFixed(0)
                 }"
               ></div>
-              <div
-                class="pulse-rays"
-                :style="{
-                  '--ray': rayLevel.toFixed(3),
-                  '--ray-hue': rayHue.toFixed(0)
-                }"
-              ></div>
+              <div class="pulse-tentacles">
+                <span
+                  v-for="(level, index) in tentacleLevels"
+                  :key="index"
+                  class="tentacle"
+                  :style="{
+                    '--level': level.toFixed(3),
+                    '--index': index
+                  }"
+                ></span>
+              </div>
               <audio
                 ref="player"
                 v-if="currentClipUrl"
@@ -283,7 +287,8 @@ export default {
       mediaElement: null as HTMLAudioElement | null,
       rayLevel: 0,
       rayHue: 200,
-      isAnswerClip: false
+      isAnswerClip: false,
+      tentacleLevels: Array.from({ length: 12 }, () => 0)
     }
   },
   async mounted() {
@@ -369,6 +374,7 @@ export default {
       this.frequencyData = new Uint8Array(analyser.frequencyBinCount)
       this.pulseLevel = 0
       this.rayLevel = 0
+      this.tentacleLevels = this.tentacleLevels.map(() => 0)
     },
     teardownAudio() {
       if (this.rafId) {
@@ -389,6 +395,7 @@ export default {
       this.isPlaying = false
       this.pulseLevel = 0
       this.rayLevel = 0
+      this.tentacleLevels = this.tentacleLevels.map(() => 0)
     },
     startPulse() {
       if (!this.analyser || !this.analyserData || !this.frequencyData) return
@@ -428,6 +435,19 @@ export default {
         this.rayLevel = this.rayLevel * 0.78 + rayTarget * 0.22
         const hueTarget = 180 + highAvg * 120
         this.rayHue = this.rayHue * 0.8 + hueTarget * 0.2
+
+        const bandCount = this.tentacleLevels.length
+        const binSize = Math.max(1, Math.floor(freq.length / bandCount))
+        for (let i = 0; i < bandCount; i += 1) {
+          const start = i * binSize
+          const end = i === bandCount - 1 ? freq.length : start + binSize
+          let bandSum = 0
+          for (let j = start; j < end; j += 1) bandSum += freq[j]
+          const avg = bandSum / Math.max(1, end - start) / 255
+          const shaped = Math.pow(Math.min(1, avg * 1.4), 1.6)
+          this.tentacleLevels[i] =
+            this.tentacleLevels[i] * 0.6 + shaped * 0.4
+        }
         this.rafId = requestAnimationFrame(tick)
       }