Fixed #3654

core/src/mindustry/ai/Pathfinder.java

@@ -13,6 +13,7 @@ import mindustry.game.EventType.*;
 import mindustry.game.*;
 import mindustry.gen.*;
 import mindustry.world.*;
+import mindustry.world.blocks.storage.*;
 import mindustry.world.meta.*;
 
 import static mindustry.Vars.*;
@@ -115,7 +116,7 @@ public class Pathfinder implements Runnable{
         }
 
         return PathTile.get(
-            tile.build == null || !tile.solid() ? 0 : Math.min((int)(tile.build.health / 40), 80),
+            tile.build == null || !tile.solid() || tile.block() instanceof CoreBlock ? 0 : Math.min((int)(tile.build.health / 40), 80),
             tile.getTeamID(),
             tile.solid(),
             tile.floor().isLiquid,
@@ -458,7 +459,7 @@ public class Pathfinder implements Runnable{
         /** costs of getting to a specific tile */
         public int[][] weights;
         /** search IDs of each position - the highest, most recent search is prioritized and overwritten */
-        int[][] searches;
+        public int[][] searches;
         /** search frontier, these are Pos objects */
         IntQueue frontier = new IntQueue();
         /** all target positions; these positions have a cost of 0, and must be synchronized on! */