fix niveaux

src/NoiseGenerator.java

@@ -109,11 +109,32 @@ public class NoiseGenerator {
         return value / initialSize;
     }
 
+    /**
+     * Noise 1D avec nombre d'octaves controle.
+     * 1 octave = lisse, utilise tout le range [-1, 1].
+     * Plus d'octaves = plus de detail/jitter, mais converge vers 0.
+     */
+    public double noise(double x, int octaves) {
+        double value = 0.0;
+        double size = default_size;
+        double weightSum = 0;
+        int count = 0;
+
+        while (size >= 1 && count < octaves) {
+            value += smoothNoise((x / size), (x / size), (x / size)) * size;
+            weightSum += size;
+            size /= 2.0;
+            count++;
+        }
+
+        return value / weightSum;
+    }
+
     public double smoothNoise(double x, double y, double z) {
         // Offset each coordinate by the seed value
         x += this.seed;
         y += this.seed;
-        x += this.seed;
+        z += this.seed;
 
         int X = (int) Math.floor(x) & 255; // FIND UNIT CUBE THAT
         int Y = (int) Math.floor(y) & 255; // CONTAINS POINT.