Per-world noise gen is no longer dumb

src/main/java/com/dfsek/terra/math/BlankFunction.java

@@ -0,0 +1,29 @@
+package com.dfsek.terra.math;
+
+import parsii.eval.Expression;
+import parsii.eval.Function;
+
+import java.util.List;
+
+public class BlankFunction implements Function {
+    private final int args;
+
+    public BlankFunction(int args) {
+        this.args = args;
+    }
+
+    @Override
+    public int getNumberOfArguments() {
+        return args;
+    }
+
+    @Override
+    public double eval(List<Expression> list) {
+        return 0;
+    }
+
+    @Override
+    public boolean isNaturalFunction() {
+        return true;
+    }
+}

src/main/java/com/dfsek/terra/math/NoiseFunction.java

@@ -3,5 +3,4 @@ package com.dfsek.terra.math;
 import parsii.eval.Function;
 
 public interface NoiseFunction extends Function {
-    void setNoise(long seed);
 }

src/main/java/com/dfsek/terra/math/NoiseFunction2.java

@@ -2,6 +2,7 @@ package com.dfsek.terra.math;
 
 import com.dfsek.terra.config.base.ConfigUtil;
 import com.dfsek.terra.generation.config.NoiseBuilder;
+import org.bukkit.World;
 import org.polydev.gaea.math.FastNoiseLite;
 import parsii.eval.Expression;
 
@@ -9,11 +10,10 @@ import java.util.List;
 
 public class NoiseFunction2 implements NoiseFunction {
     private final Cache cache = new Cache();
-    private FastNoiseLite gen;
-    private final NoiseBuilder builder;
+    private final FastNoiseLite gen;
 
-    public NoiseFunction2(NoiseBuilder builder) {
-        this.builder = builder;
+    public NoiseFunction2(World world, NoiseBuilder builder) {
+        this.gen = builder.build((int) world.getSeed());
     }
 
     @Override
@@ -31,11 +31,6 @@ public class NoiseFunction2 implements NoiseFunction {
         return true;
     }
 
-    @Override
-    public void setNoise(long seed) {
-        this.gen = builder.build((int) seed);
-    }
-
     private final class Cache {
         private final double[] cacheX = new double[ConfigUtil.cacheSize];
         private final double[] cacheZ = new double[ConfigUtil.cacheSize];

src/main/java/com/dfsek/terra/math/NoiseFunction3.java

@@ -1,17 +1,17 @@
 package com.dfsek.terra.math;
 
 import com.dfsek.terra.generation.config.NoiseBuilder;
+import org.bukkit.World;
 import org.polydev.gaea.math.FastNoiseLite;
 import parsii.eval.Expression;
 
 import java.util.List;
 
 public class NoiseFunction3 implements NoiseFunction {
-    private FastNoiseLite gen;
-    private final NoiseBuilder builder;
+    private final FastNoiseLite gen;
 
-    public NoiseFunction3(NoiseBuilder builder) {
-        this.builder = builder;
+    public NoiseFunction3(World world, NoiseBuilder builder) {
+        this.gen = builder.build((int) world.getSeed());
     }
 
     @Override
@@ -28,9 +28,4 @@ public class NoiseFunction3 implements NoiseFunction {
     public boolean isNaturalFunction() {
         return true;
     }
-
-    @Override
-    public void setNoise(long seed) {
-        this.gen = builder.build((int) seed);
-    }
 }