feat(barn-defense): move to examples, add homepage link, set deploy base path

Moves barn-defense tower defense game into examples/ directory alongside
other example games. Adds game card to _site homepage. Sets Vite base
path for GitHub Pages deployment.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

barn-defense/src/audio/music.js

@@ -1,172 +0,0 @@
-// =============================================================================
-// Barn Defense - BGM (Background Music)
-// Farm-themed music patterns using Strudel.cc.
-// Each function returns stack(...).cpm(N).play().
-// =============================================================================
-
-import { stack, note, s } from '@strudel/web';
-
-/**
- * Menu Theme - Gentle, pastoral evening on the farm.
- * Sine/triangle pads, slow tempo, C/F/G/Am chords with reverb and delay.
- */
-export function menuTheme() {
-  return stack(
-    // Warm pad chords: C -> F -> G -> Am
-    note('<c3,e3,g3> <f3,a3,c4> <g3,b3,d4> <a3,c4,e4>')
-      .s('sine')
-      .attack(1.2)
-      .release(2.0)
-      .gain(0.12)
-      .room(0.8)
-      .roomsize(7)
-      .lpf(1600)
-      .slow(2),
-    // Gentle melodic sparkle - pentatonic hints
-    note('~ g4 ~ e4 ~ ~ c5 ~')
-      .s('triangle')
-      .slow(4)
-      .gain(0.06)
-      .delay(0.45)
-      .delaytime(0.5)
-      .delayfeedback(0.5)
-      .room(0.6)
-      .lpf(2200),
-    // Deep bass root notes
-    note('c2 ~ ~ ~ f2 ~ ~ ~ g2 ~ ~ ~ a2 ~ ~ ~')
-      .s('sine')
-      .gain(0.1)
-      .slow(4)
-      .lpf(280),
-    // Distant cricket-like high sine pings
-    note('~ ~ ~ e6 ~ ~ ~ ~ ~ ~ g6 ~ ~ ~ ~ ~')
-      .s('sine')
-      .gain(0.03)
-      .slow(4)
-      .delay(0.6)
-      .delaytime(0.7)
-      .delayfeedback(0.4)
-      .room(0.9)
-      .roomsize(8)
-      .lpf(4000)
-  ).slow(2).cpm(65).play();
-}
-
-/**
- * Gameplay BGM - Moderate energy country/folk feel.
- * Square wave lead for chiptune feel, triangle bass, light percussion.
- * Gains kept LOW to avoid distracting from gameplay.
- */
-export function gameplayBGM() {
-  return stack(
-    // Chiptune lead melody - bouncy folk tune in C major
-    note('c4 e4 g4 e4 f4 a4 g4 e4')
-      .s('square')
-      .gain(0.12)
-      .lpf(2000)
-      .decay(0.12)
-      .sustain(0.2),
-    // Counter melody - responds to lead
-    note('~ g4 ~ ~ ~ c5 ~ ~')
-      .s('square')
-      .gain(0.05)
-      .lpf(2500)
-      .decay(0.1)
-      .sustain(0),
-    // Walking bass line - country feel
-    note('c2 c2 g2 g2 f2 f2 e2 g2')
-      .s('triangle')
-      .gain(0.16)
-      .lpf(450),
-    // Light drum pattern - kick and snare with hihats
-    s('bd ~ sd ~, hh*8')
-      .gain(0.2),
-    // Rhythmic chordal stabs (banjo-like)
-    note('~ c4,e4 ~ c4,e4 ~ f4,a4 ~ g4,b4')
-      .s('square')
-      .gain(0.04)
-      .lpf(1200)
-      .decay(0.06)
-      .sustain(0)
-  ).cpm(110).play();
-}
-
-/**
- * Game Over Theme - Somber, descending, minor key.
- * Triangle waves, heavy reverb, slow tempo. Dark pad underneath.
- */
-export function gameOverTheme() {
-  return stack(
-    // Descending somber melody in A minor
-    note('e4 ~ d4 ~ c4 ~ b3 ~ a3 ~ ~ ~ ~ ~ ~ ~')
-      .s('triangle')
-      .gain(0.16)
-      .decay(0.7)
-      .sustain(0.1)
-      .release(1.2)
-      .room(0.7)
-      .roomsize(6)
-      .lpf(1600),
-    // Dark minor pad: Am chord
-    note('a2,c3,e3')
-      .s('sine')
-      .attack(0.6)
-      .release(2.5)
-      .gain(0.1)
-      .room(0.8)
-      .roomsize(7)
-      .lpf(1000),
-    // Low ominous drone
-    note('a1')
-      .s('sine')
-      .gain(0.08)
-      .attack(1.0)
-      .release(3.0)
-      .lpf(200)
-      .room(0.5)
-  ).slow(3).cpm(50).play();
-}
-
-/**
- * Level Complete Theme - Triumphant, major key, celebratory.
- * Ascending patterns, brighter than menu, moderate tempo.
- */
-export function levelCompleteTheme() {
-  return stack(
-    // Triumphant ascending melody
-    note('c4 e4 g4 c5 ~ e5 g5 c6 ~ ~ ~ ~ ~ ~ ~ ~')
-      .s('triangle')
-      .gain(0.18)
-      .decay(0.3)
-      .sustain(0.3)
-      .release(0.8)
-      .room(0.6)
-      .roomsize(5)
-      .lpf(3000),
-    // Bright major chord pad: C -> G -> Am -> F
-    note('<c3,e3,g3> <g3,b3,d4> <a3,c4,e4> <f3,a3,c4>')
-      .s('sine')
-      .attack(0.8)
-      .release(1.5)
-      .gain(0.1)
-      .room(0.7)
-      .roomsize(6)
-      .lpf(2000)
-      .slow(2),
-    // Celebratory bass
-    note('c2 g2 a2 f2')
-      .s('triangle')
-      .gain(0.12)
-      .lpf(400)
-      .slow(2),
-    // Sparkle arpeggios
-    note('e5 g5 c6 g5 e5 c5 g4 c5')
-      .s('sine')
-      .gain(0.04)
-      .delay(0.4)
-      .delaytime(0.3)
-      .delayfeedback(0.4)
-      .room(0.5)
-      .lpf(4000)
-  ).cpm(80).play();
-}

examples/barn-defense/src/audio/music.js

@@ -0,0 +1,201 @@
+// =============================================================================
+// Barn Defense - BGM (Background Music)
+// Eerie "horror at the barn" atmosphere using Strudel.cc.
+// Soft, melodic, unsettling — haunted farmland at dusk.
+// Each function returns stack(...).cpm(N).play().
+// =============================================================================
+
+import { stack, note, s } from '@strudel/web';
+
+/**
+ * Menu Theme - Haunted barn at twilight.
+ * Eerie pads, music-box melody, low drone. Dm/Am/Em territory.
+ */
+export function menuTheme() {
+  return stack(
+    // Dark ambient pad — Dm → Am → Em → Bdim
+    note('<d3,f3,a3> <a2,c3,e3> <e3,g3,b3> <b2,d3,f3>')
+      .s('sine')
+      .attack(1.5)
+      .release(2.5)
+      .gain(0.08)
+      .room(0.9)
+      .roomsize(8)
+      .lpf(1200)
+      .slow(2),
+    // Music-box melody — sparse, lonely, minor pentatonic
+    note('~ a4 ~ ~ e4 ~ ~ ~ ~ d5 ~ ~ ~ c5 ~ ~')
+      .s('triangle')
+      .gain(0.05)
+      .decay(0.4)
+      .sustain(0.05)
+      .release(1.2)
+      .delay(0.5)
+      .delaytime(0.6)
+      .delayfeedback(0.55)
+      .room(0.7)
+      .lpf(2000)
+      .slow(2),
+    // Sub drone — ominous low pulse
+    note('d1')
+      .s('sine')
+      .gain(0.06)
+      .attack(2.0)
+      .release(3.0)
+      .lpf(150)
+      .room(0.4),
+    // Distant wind-like texture — detuned sine wobble
+    note('~ ~ ~ ~ ~ a5 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~')
+      .s('sine')
+      .gain(0.02)
+      .slow(4)
+      .delay(0.7)
+      .delaytime(0.8)
+      .delayfeedback(0.6)
+      .room(0.95)
+      .roomsize(10)
+      .lpf(3000)
+  ).slow(2).cpm(55).play();
+}
+
+/**
+ * Gameplay BGM - Tense barn defense. Creepy but driving.
+ * Minor key with subtle pulse. Soft melodic lead over dark bass.
+ * Keeps tension without overwhelming gameplay.
+ */
+export function gameplayBGM() {
+  return stack(
+    // Eerie lead melody — Am pentatonic, sparse and haunting
+    note('a3 ~ c4 ~ e4 ~ d4 c4 ~ a3 ~ ~ e4 ~ c4 ~')
+      .s('triangle')
+      .gain(0.09)
+      .lpf(1800)
+      .decay(0.25)
+      .sustain(0.15)
+      .release(0.6)
+      .room(0.4)
+      .delay(0.15)
+      .delaytime(0.375)
+      .delayfeedback(0.3),
+    // Dark pad — Am → Dm → Em → Am
+    note('<a2,c3,e3> <d3,f3,a3> <e3,g3,b3> <a2,c3,e3>')
+      .s('sine')
+      .attack(0.8)
+      .release(1.5)
+      .gain(0.06)
+      .room(0.6)
+      .roomsize(5)
+      .lpf(1000),
+    // Heartbeat bass — slow pulse, unsettling
+    note('a1 ~ ~ a1 ~ ~ ~ ~ d1 ~ ~ d1 ~ ~ ~ ~')
+      .s('triangle')
+      .gain(0.1)
+      .lpf(300)
+      .decay(0.3)
+      .sustain(0),
+    // Soft percussion — tick-tock urgency
+    s('~ hh ~ ~ ~ hh ~ ~, bd ~ ~ ~ ~ ~ ~ ~')
+      .gain(0.12),
+    // High dissonant whisper — occasional tension
+    note('~ ~ ~ ~ ~ ~ ~ f5 ~ ~ ~ ~ ~ ~ ~ ~')
+      .s('sine')
+      .gain(0.025)
+      .decay(0.5)
+      .sustain(0)
+      .room(0.8)
+      .roomsize(7)
+      .lpf(2500)
+  ).cpm(85).play();
+}
+
+/**
+ * Game Over Theme - The barn has fallen. Deep dread.
+ * Descending minor melody, low drone, hollow reverb.
+ */
+export function gameOverTheme() {
+  return stack(
+    // Descending lament — chromatic descent
+    note('e4 ~ ~ d4 ~ ~ c4 ~ ~ b3 ~ ~ a3 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~')
+      .s('triangle')
+      .gain(0.1)
+      .decay(0.8)
+      .sustain(0.05)
+      .release(1.5)
+      .room(0.85)
+      .roomsize(8)
+      .lpf(1400),
+    // Hollow minor pad — Am with added 9th for unease
+    note('a2,c3,e3,b3')
+      .s('sine')
+      .attack(1.0)
+      .release(3.0)
+      .gain(0.06)
+      .room(0.9)
+      .roomsize(9)
+      .lpf(800),
+    // Deep death drone
+    note('a0')
+      .s('sine')
+      .gain(0.05)
+      .attack(2.0)
+      .release(4.0)
+      .lpf(120)
+      .room(0.3),
+    // Ghost whisper — barely audible high tone
+    note('~ ~ ~ ~ e6 ~ ~ ~ ~ ~ ~ ~')
+      .s('sine')
+      .gain(0.015)
+      .slow(3)
+      .delay(0.6)
+      .delaytime(0.9)
+      .delayfeedback(0.5)
+      .room(0.95)
+      .roomsize(10)
+      .lpf(3500)
+  ).slow(3).cpm(40).play();
+}
+
+/**
+ * Level Complete Theme - Relief from horror. The barn survives... for now.
+ * Bittersweet major over minor foundation. Hopeful but uneasy.
+ */
+export function levelCompleteTheme() {
+  return stack(
+    // Relief melody — rising from minor to major, tentative hope
+    note('a3 ~ c4 ~ e4 ~ ~ g4 ~ a4 ~ ~ ~ ~ ~ ~')
+      .s('triangle')
+      .gain(0.1)
+      .decay(0.4)
+      .sustain(0.2)
+      .release(1.0)
+      .room(0.7)
+      .roomsize(6)
+      .lpf(2200),
+    // Warm-ish pad — Am → C → F → G (minor to major shift)
+    note('<a2,c3,e3> <c3,e3,g3> <f3,a3,c4> <g3,b3,d4>')
+      .s('sine')
+      .attack(0.8)
+      .release(2.0)
+      .gain(0.07)
+      .room(0.8)
+      .roomsize(7)
+      .lpf(1600)
+      .slow(2),
+    // Gentle bass
+    note('a2 ~ c2 ~ f2 ~ g2 ~')
+      .s('triangle')
+      .gain(0.08)
+      .lpf(350)
+      .slow(2),
+    // Music box shimmer — sparse and delicate
+    note('~ e5 ~ ~ ~ a5 ~ ~ ~ c5 ~ ~ ~ ~ ~ ~')
+      .s('sine')
+      .gain(0.03)
+      .delay(0.4)
+      .delaytime(0.4)
+      .delayfeedback(0.45)
+      .room(0.6)
+      .lpf(3500)
+      .slow(2)
+  ).cpm(65).play();
+}

examples/barn-defense/vite.config.js

@@ -1,6 +1,7 @@
 import { defineConfig } from 'vite';
 
 export default defineConfig({
+  base: '/game-creator/barn-defense/',
   server: {
     port: 3000,
   },