Add FixChunk command

pom.xml

@@ -100,7 +100,7 @@
         <dependency>
             <groupId>org.polydev</groupId>
             <artifactId>gaea</artifactId>
-            <version>1.11.2</version>
+            <version>1.11.3</version>
             <scope>provided</scope>
         </dependency>
         <dependency>

src/main/java/com/dfsek/terra/command/FixChunkCommand.java

@@ -0,0 +1,44 @@
+package com.dfsek.terra.command;
+
+import com.dfsek.terra.generation.TerraChunkGenerator;
+import org.bukkit.World;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+import org.polydev.gaea.command.WorldCommand;
+
+import java.util.Collections;
+import java.util.List;
+
+public class FixChunkCommand extends WorldCommand {
+    public FixChunkCommand(org.polydev.gaea.command.Command parent) {
+        super(parent);
+    }
+
+    @Override
+    public boolean execute(@NotNull Player player, @NotNull Command command, @NotNull String s, @NotNull String[] strings, World world) {
+        TerraChunkGenerator.fixChunk(player.getLocation().getChunk());
+        return true;
+    }
+
+    @Override
+    public String getName() {
+        return "fixchunk";
+    }
+
+    @Override
+    public List<org.polydev.gaea.command.Command> getSubCommands() {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public int arguments() {
+        return 0;
+    }
+
+    @Override
+    public List<String> getTabCompletions(@NotNull CommandSender commandSender, @NotNull String s, @NotNull String[] strings) {
+        return Collections.emptyList();
+    }
+}

src/main/java/com/dfsek/terra/command/TerraCommand.java

@@ -23,7 +23,8 @@ public class TerraCommand extends Command {
             new SaveDataCommand(this),
             new StructureCommand(this),
             new ImageCommand(this),
-            new GeometryCommand(this));
+            new GeometryCommand(this),
+            new FixChunkCommand(this));
 
     public TerraCommand(GaeaPlugin main) {
         super(main);

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

@@ -17,6 +17,7 @@ import com.dfsek.terra.population.TreePopulator;
 import com.dfsek.terra.structure.StructureSpawnRequirement;
 import com.dfsek.terra.util.DataUtil;
 import org.bukkit.Bukkit;
+import org.bukkit.Chunk;
 import org.bukkit.Material;
 import org.bukkit.World;
 import org.bukkit.block.BlockFace;
@@ -156,6 +157,11 @@ public class TerraChunkGenerator extends GaeaChunkGenerator {
         }
     }
 
+    public static synchronized void fixChunk(Chunk c) {
+        if(!(c.getWorld().getGenerator() instanceof TerraChunkGenerator)) throw new IllegalArgumentException();
+        popMap.get(c.getWorld()).checkNeighbors(c.getX(), c.getZ(), c.getWorld());
+    }
+
     @Override
     public int getNoiseOctaves(World world) {
         return 4;