random wave pattern

Script.js

@@ -830,7 +830,12 @@ function addShips() {
       if (currentWave.spawnTimer <= 0) {
         spawnEnemyFromWave(currentWave);
         currentWave.spawned++;
-        currentWave.spawnTimer = currentWave.spacing;
+        // --- RANDOM SPACING ---
+        // Membuat jarak muncul antar musuh bervariasi
+        // Kadang cepat, kadang ada jeda.
+        let randomSpacing =
+          currentWave.spacing + Math.floor(Math.random() * 30);
+        currentWave.spawnTimer = randomSpacing;
       } else {
         currentWave.spawnTimer--;
       }
@@ -850,19 +855,21 @@ function addShips() {
 }
 
 function startNewWave() {
-  const patterns = ["line", "v", "sine", "scatter"];
-  const pattern = patterns[Math.floor(Math.random() * patterns.length)];
+  // --- CHAOS WAVE MODE ---
+  // Tidak ada pattern 'line', 'v', 'zigzag'.
+  // Kita hanya menentukan jumlah musuh yang akan muncul di wave ini.
 
   let baseCount = 3;
   let scalingCount = Math.floor(game.level / 2);
   let count = Math.min(
-    15,
-    baseCount + scalingCount + Math.floor(Math.random() * 3)
+    20, // Max musuh ditingkatkan sedikit untuk kompensasi sebaran
+    baseCount + scalingCount + Math.floor(Math.random() * 5)
   );
-  let spacing = Math.max(20, 50 - game.level);
+
+  // Spacing dasar (nanti diacak lagi per musuh)
+  let spacing = Math.max(15, 40 - game.level);
 
   currentWave = {
-    pattern: pattern,
     count: count,
     spacing: spacing,
     spawned: 0,
@@ -871,41 +878,34 @@ function startNewWave() {
 }
 
 function spawnEnemyFromWave(wave) {
-  const baseY = canvasHeight / 2;
-  const spread = 250;
-  const index = wave.spawned;
-  let y = Math.random() * (canvasHeight - 120) + 60;
+  // --- POSISI BENAR-BENAR ACAK ---
+  // Tentukan Y sembarang di area layar
+  // Area aman: 60px dari atas, 100px dari bawah
+  const minY = 60;
+  const maxY = canvasHeight - 120;
 
-  if (wave.pattern === "line") {
-    const step = (spread * 2) / Math.max(1, wave.count - 1);
-    y = baseY - spread + step * index;
-  } else if (wave.pattern === "v") {
-    const centerIndex = (wave.count - 1) / 2;
-    const offset = (index - centerIndex) * 50;
-    y = baseY + Math.abs(offset) * 1.2;
-  } else if (wave.pattern === "sine") {
-    const angle = (index / wave.count) * Math.PI * 2;
-    y = baseY + Math.sin(angle) * spread;
-  } else if (wave.pattern === "scatter") {
-    y = Math.random() * (canvasHeight - 150) + 75;
-  }
+  const y = Math.random() * (maxY - minY) + minY;
 
-  y = Math.max(60, Math.min(canvasHeight - 100, y));
+  // Random X Offset biar tidak muncul dalam satu garis lurus sempurna
+  const xOffset = Math.random() * 200;
 
   const randomShip = Math.floor(Math.random() * enemyImgArray.length);
-  // --- KECEPATAN MUSUH DIPERLAMBAT ---
-  // Lama: 4 + Math.random()*3 + game.level*0.25 (Cepat)
-  // Baru: 3.5 + Math.random()*2 + game.level*0.1 (Lambat & Scaling Halus)
-  // Max Speed: 8 (Agar tidak teleportasi)
+
+  // Scaling Speed per 5 Level (0.2 factor)
   let rawSpeed = 3.5 + Math.random() * 2 + game.level * 0.2;
   const speed = Math.min(rawSpeed, 8);
 
+  // --- RANDOM MOVEMENT TYPE ---
+  // Setiap musuh melempar dadu sendiri untuk menentukan tipe gerakannya
+  // 30% kemungkinan gerak gelombang (sine), sisanya lurus.
+  let movementType = Math.random() < 0.3 ? "sine" : "straight";
+
   let enemy = new EnemyObj(
-    canvasWidth + 50,
+    canvasWidth + 50 + xOffset, // X position + random offset
     y,
     speed,
     enemyImgArray[randomShip],
-    wave.pattern === "sine" ? "sine" : "straight"
+    movementType
   );
 
   // BALANCING HEALTH