Fixed surface gen in UmbraValleyBiome

src/main/java/ru/betterend/world/surface/UmbraSurfaceNoiseCondition.java

@@ -0,0 +1,39 @@
+package ru.betterend.world.surface;
+
+import ru.bclib.api.biomes.SurfaceNoiseCondition;
+import ru.bclib.mixin.common.SurfaceRulesContextAccessor;
+import ru.bclib.util.MHelper;
+import ru.betterend.noise.OpenSimplexNoise;
+
+public class UmbraSurfaceNoiseCondition extends SurfaceNoiseCondition {
+    private static final OpenSimplexNoise NOISE = new OpenSimplexNoise(1512);
+
+    private final double threshold;
+    public UmbraSurfaceNoiseCondition(double threshold){
+        this.threshold = threshold;
+    }
+
+    private static int lastX = Integer.MIN_VALUE;
+    private static int lastZ = Integer.MIN_VALUE;
+    private static double lastValue = 0;
+
+    @Override
+    public boolean test(SurfaceRulesContextAccessor context) {
+        final int x = context.getBlockX();
+        final int z = context.getBlockZ();
+        if (lastX==x && lastZ==z) return lastValue > threshold;
+
+        double value = NOISE.eval(x * 0.03, z * 0.03) + NOISE.eval(x * 0.1, z * 0.1) * 0.3 + MHelper.randRange(
+                -0.1,
+                0.1,
+                MHelper.RANDOM
+        );
+
+        lastX=x;
+        lastZ=z;
+        lastValue=value;
+        return value > threshold;
+        //int depth = (int) (NOISE.eval(x * 0.1, z * 0.1) * 20 + NOISE.eval(x * 0.5, z * 0.5) * 10 + 60);
+        //SurfaceBuilder.DEFAULT.apply(random, chunk, biome, x, z, height, noise + depth, defaultBlock, defaultFluid, seaLevel, seed, n, config);
+    }
+}