Add Tile.tileOffset constant

BauSystem/BauSystem_Main/src/de/steamwar/bausystem/BauSystem.java

@@ -139,14 +139,12 @@ public class BauSystem extends JavaPlugin implements Listener {
 
     @EventHandler
     public void onCRIUSleep(CRIUSleepEvent event) {
-        RegionSystem.INSTANCE.save();
     }
 
     @Override
     public void onDisable() {
         linker.unlink();
         WorldData.write();
-        RegionSystem.INSTANCE.save();
         Config.getInstance().saveAll();
     }
 

BauSystem/BauSystem_RegionDynamic/src/de/steamwar/bausystem/region/dynamic/Tile.java

@@ -26,6 +26,7 @@ import java.util.Optional;
 public class Tile {
 
     public static final int tileSize = 19;
+    public static final int tileOffset = tileSize / 2;
     public static final int maxTile = 1023;
     public static final int minTile = -maxTile;
     public static final int tilesPerAxis = maxTile * 2 + 1;
@@ -49,13 +50,13 @@ public class Tile {
     }
 
     public static Optional<Tile> fromXZ(int x, int z) {
-        x = (int) Math.floor((x + 9) / (double) tileSize);
-        z = (int) Math.floor((z + 9) / (double) tileSize);
+        x = (int) Math.floor((x + tileOffset) / (double) tileSize);
+        z = (int) Math.floor((z + tileOffset) / (double) tileSize);
         return fromTile(x, z);
     }
 
     public static int getMinX(int tileX) {
-        return tileX * tileSize - 9;
+        return tileX * tileSize - tileOffset;
     }
 
     public int getMinX() {
@@ -63,7 +64,7 @@ public class Tile {
     }
 
     public static int getMinZ(int tileZ) {
-        return tileZ * tileSize - 9;
+        return tileZ * tileSize - tileOffset;
     }
 
     public int getMinZ() {