Hover unit display

core/src/mindustry/entities/Units.java

@@ -180,6 +180,25 @@ public class Units{
         return result;
     }
 
+    /** Returns the closest ally of this team. Filter by predicate.
+     * Unlike the closest() function, this only guarantees that unit hitboxes overlap the range. */
+    public static Unitc closestOverlap(Team team, float x, float y, float range, Boolf<Unitc> predicate){
+        result = null;
+        cdist = 0f;
+
+        nearby(team, x - range, y - range, range*2f, range*2f, e -> {
+            if(!predicate.get(e)) return;
+
+            float dist = e.dst2(x, y);
+            if(result == null || dist < cdist){
+                result = e;
+                cdist = dist;
+            }
+        });
+
+        return result;
+    }
+
     /** Iterates over all units in a rectangle. */
     public static void nearby(Team team, float x, float y, float width, float height, Cons<Unitc> cons){
         teamIndex.tree(team).intersect(height, x, y, width, cons);