Fixed damaged building memory leak

core/src/mindustry/entities/Units.java

@@ -143,7 +143,7 @@ public class Units{
 
     /** Returns the nearest damaged tile. */
     public static Building findDamagedTile(Team team, float x, float y){
-        return Geometry.findClosest(x, y, indexer.getDamaged(team));
+        return indexer.getDamaged(team).min(b -> b.dst2(x, y));
     }
 
     /** Returns the nearest ally tile in a range. */

core/src/mindustry/entities/comp/BuildingComp.java

@@ -63,6 +63,7 @@ abstract class BuildingComp implements Posc, Teamc, Healthc, Buildingc, Timerc,
     transient boolean enabled = true;
     transient float enabledControlTime;
     transient String lastAccessed;
+    transient boolean wasDamaged; //used only by the indexer
 
     PowerModule power;
     ItemModule items;
@@ -1344,6 +1345,18 @@ abstract class BuildingComp implements Posc, Teamc, Healthc, Buildingc, Timerc,
         return tile.build == self() && !dead();
     }
 
+    @MethodPriority(100)
+    @Override
+    public void heal(){
+        indexer.notifyBuildHealed(self());
+    }
+
+    @MethodPriority(100)
+    @Override
+    public void heal(float amount){
+        indexer.notifyBuildHealed(self());
+    }
+
     @Override
     public float hitSize(){
         return tile.block().size * tilesize;