fixes to set_biome to accomodate 3d biomes

src/main/java/carpet/mixins/class_4548_getBiomeArrayMixin.java

@@ -1,9 +1,9 @@
 package carpet.mixins;
 
 import carpet.fakes.class_4548Interface;
+import carpet.settings.CarpetSettings;
 import net.minecraft.class_4548;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.ChunkPos;
 import net.minecraft.util.math.MathHelper;
 import net.minecraft.world.World;
 import net.minecraft.world.biome.Biome;
@@ -25,11 +25,10 @@ public class class_4548_getBiomeArrayMixin implements class_4548Interface
     @Override
     public void setBiomeAtIndex(BlockPos pos, World world, Biome what)
     {
-        ChunkPos chunkPos = new ChunkPos(pos);
-        int seaLevel = world.getSeaLevel();
-        int int_4 = chunkPos.x & field_20650;
+        int seaLevel = 0;// seems to be a fixed value for now. world.getSeaLevel();
+        int int_4 = (pos.getX() >> 2) & field_20650;
         int int_5 = MathHelper.clamp(seaLevel, 0, field_20651);
-        int int_6 = chunkPos.z & field_20650;
+        int int_6 = (pos.getZ() >> 2) & field_20650;
         field_20654[int_5 << field_20652 + field_20652 | int_6 << field_20652 | int_4] = what;
     }
 }

src/main/java/carpet/script/CarpetExpression.java

@@ -2,6 +2,7 @@ package carpet.script;
 
 import carpet.CarpetServer;
 import carpet.fakes.MinecraftServerInterface;
+import carpet.fakes.class_4548Interface;
 import carpet.helpers.FeatureGenerator;
 import carpet.script.Fluff.TriFunction;
 import carpet.script.exception.CarpetExpressionException;
@@ -997,8 +998,8 @@ public class CarpetExpression
             return (_c, _t) -> res;
         });
 
-        this.expr.addLazyFunction("set_biome", -1, (c, t, lv) -> {
-            throw new InternalExpressionException("set_biome is WIP on 19w36a");/*
+        this.expr.addLazyFunction("set_biome", -1, (c, t, lv) ->
+        {
             CarpetContext cc = (CarpetContext)c;
             BlockValue.LocatorResult locator = BlockValue.fromParams(cc, lv, 0);
             if (lv.size() == locator.offset)
@@ -1010,10 +1011,9 @@ public class CarpetExpression
             ServerWorld world = cc.s.getWorld();
             BlockPos pos = locator.block.getPos();
             Chunk chunk = world.method_22350(pos);
-            // todo these indices are wrong in 1.15 - needs fixing.
             ((class_4548Interface)chunk.getBiomeArray()).setBiomeAtIndex(pos, world,  biome);
             this.forceChunkUpdate(pos, world);
-            return LazyValue.NULL; */
+            return LazyValue.NULL;
         });
         // need get_biome
 

src/main/java/carpet/settings/CarpetSettings.java

@@ -27,7 +27,7 @@ import static carpet.settings.RuleCategory.SURVIVAL;
 
 public class CarpetSettings
 {
-    public static final String carpetVersion = "1.0.6+v190905";
+    public static final String carpetVersion = "1.0.6+v190905-2";
     public static final Logger LOG = LogManager.getLogger();
     public static boolean skipGenerationChecks = false;
     public static boolean impendingFillSkipUpdates = false;