Fixed ores not spawning in certain maps

core/src/io/anuke/mindustry/maps/generators/MapGenerator.java

@@ -120,6 +120,7 @@ public class MapGenerator extends Generator{
 
                     if(distortFloor){
                         tile.setFloor(tiles[newX][newY].floor());
+                        tile.setOre(tiles[newX][newY].ore());
                     }
 
                     for(Decoration decor : decorations){

core/src/io/anuke/mindustry/world/Block.java

@@ -269,6 +269,7 @@ public class Block extends BlockStorage{
 
     public float sumAttribute(Attribute attr, int x, int y){
         Tile tile = world.tile(x, y);
+        if(tile == null) return 0;
         float sum = 0;
         for(Tile other : tile.getLinkedTilesAs(this, tempTiles)){
             sum += other.floor().attributes.get(attr);

core/src/io/anuke/mindustry/world/blocks/Floor.java

@@ -7,6 +7,7 @@ import io.anuke.arc.graphics.g2d.TextureRegion;
 import io.anuke.arc.math.Mathf;
 import io.anuke.arc.math.geom.Geometry;
 import io.anuke.arc.math.geom.Point2;
+import io.anuke.arc.util.Log;
 import io.anuke.mindustry.content.Blocks;
 import io.anuke.mindustry.content.Fx;
 import io.anuke.mindustry.content.StatusEffects;