Finish slope palette implementation

src/main/java/com/dfsek/terra/config/genconfig/biome/BiomeConfig.java

@@ -39,6 +39,10 @@ public class BiomeConfig extends TerraConfig {
     private final List<StructureConfig> structures;
     private final ConfigPack config;
     private final Palette<BlockData> slant;
+    private final double ySlantOffsetTop;
+    private final double ySlantOffsetBottom;
+    private final double xzSlantOffset;
+
     private String eq;
 
     public BiomeConfig(File file, ConfigPack config) throws InvalidConfigurationException, IOException {
@@ -123,13 +127,16 @@ public class BiomeConfig extends TerraConfig {
             Debug.info("Using super snow");
         } else snow = new BiomeSnowConfig(this);
 
-        // Get slant palette
-        if(contains("slant-palette")) {
-            String slantS = getString("slant-palette");
+        // Get slant stuff
+        if(contains("slant")) {
+            String slantS = getString("slant.palette");
             slant = config.getPalette(slantS).getPalette();
             Debug.info("Using slant palette: " + slantS);
             if(slant == null) throw new NotFoundException("Slant Palette", slantS, getID());
         } else slant = null;
+        ySlantOffsetTop = getDouble("slant.y-offset.top", 0.25);
+        ySlantOffsetBottom = getDouble("slant.y-offset.bottom", 0.25);
+        xzSlantOffset = getDouble("slant.x-z-offset", 1);
 
         //Make sure equation is non-null
         if(eq == null || eq.equals(""))
@@ -190,6 +197,18 @@ public class BiomeConfig extends TerraConfig {
         return slant;
     }
 
+    public double getYSlantOffsetTop() {
+        return ySlantOffsetTop;
+    }
+
+    public double getYSlantOffsetBottom() {
+        return ySlantOffsetBottom;
+    }
+
+    public double getXZSlantOffset() {
+        return xzSlantOffset;
+    }
+
     @Override
     public String toString() {
         return "Biome with ID " + getID() + " and noise equation " + eq;

src/main/java/com/dfsek/terra/generation/TerraChunkGenerator.java

@@ -83,13 +83,16 @@ public class TerraChunkGenerator extends GaeaChunkGenerator {
     private static Palette<BlockData> getPalette(int x, int y, int z, BiomeConfig c, ChunkInterpolator interpolator) {
         Palette<BlockData> slant = c.getSlant();
         if(slant != null) {
-            boolean north = interpolator.getNoise(x, y, z + 1) > 0;
-            boolean south = interpolator.getNoise(x, y, z - 1) > 0;
-            boolean east = interpolator.getNoise(x + 1, y, z) > 0;
-            boolean west = interpolator.getNoise(x - 1, y, z) > 0;
+            double xzOffset = c.getXZSlantOffset();
+            boolean north = interpolator.getNoise(x, y, z + xzOffset) > 0;
+            boolean south = interpolator.getNoise(x, y, z - xzOffset) > 0;
+            boolean east = interpolator.getNoise(x + xzOffset, y, z) > 0;
+            boolean west = interpolator.getNoise(x - xzOffset, y, z) > 0;
 
-            boolean top = interpolator.getNoise(x, y + 0.25, z) > 0;
-            boolean bottom = interpolator.getNoise(x, y - 0.25, z) > 0;
+            double ySlantOffsetTop = c.getYSlantOffsetTop();
+            double ySlantOffsetBottom = c.getYSlantOffsetBottom();
+            boolean top = interpolator.getNoise(x, y + ySlantOffsetTop, z) > 0;
+            boolean bottom = interpolator.getNoise(x, y - ySlantOffsetBottom, z) > 0;
 
             if((top && bottom) && (north || south || east || west) && (!(north && south && east && west))) return slant;
         }

src/main/java/com/dfsek/terra/generation/UserDefinedGenerator.java

@@ -7,6 +7,7 @@ import org.bukkit.World;
 import org.bukkit.block.data.BlockData;
 import org.polydev.gaea.biome.Generator;
 import org.polydev.gaea.math.FastNoiseLite;
+import org.polydev.gaea.math.Interpolator;
 import org.polydev.gaea.world.palette.Palette;
 import parsii.eval.Expression;
 import parsii.eval.Parser;
@@ -106,4 +107,9 @@ public class UserDefinedGenerator extends Generator {
     public boolean useMinimalInterpolation() {
         return preventSmooth;
     }
+
+    @Override
+    public Interpolator.Type getInterpolationType() {
+        return Interpolator.Type.LINEAR;
+    }
 }

src/main/resources/default-config/biomes/mountain/arid_mountains.yml

@@ -14,7 +14,12 @@ vanilla: SAVANNA
 
 erodible: false
 prevent-smooth: true
-slant-palette: STONE
+slant:
+  palette: STONE
+  y-offset:
+    top: 1
+    bottom: 0.25
+  x-z-offset: 1
 
 flora:
   chance: 40

src/main/resources/default-config/palettes/mountains/stone_side.yml

@@ -1,5 +1,5 @@
 layers:
   - materials:
-      - "minecraft:diamond_block": 1
+      - "minecraft:stone": 1
     layers: 1
 id: "STONE"