Build Tower bug fix

source/core/src/main/com/csse3200/game/entities/EntityService.java

@@ -183,6 +183,24 @@ public Entity getEntityAtPosition(float x, float y) {
     return null;
   }
 
+  /**
+   * Checks for the presence of an Entity at a specified position (x, y).
+   *
+   * @param x The x-coordinate of the position to check.
+   * @param y The y-coordinate of the position to check.
+   * @return The Entity found at the specified position, or null if no Entity is present.
+   */
+  public Entity checkEntityAtPosition(int x, int y) {
+    entities.sort(Comparator.comparingInt(Entity::getLayer));
+    for (Entity entity : entities) {
+      if (entity.getPosition().x == x && entity.getPosition().y == y) {
+        return entity;
+      }
+    }
+    return null;
+  }
+
+
   private boolean entityContainsPosition(Entity entity, float x, float y) {
     float entityX = entity.getPosition().x;
     float entityY = entity.getPosition().y;
@@ -207,7 +225,7 @@ public boolean entitiesInTile(int x_coord, int y_coord) {
       return true;
     }
     if (mp.getCell(x_coord, y_coord) != null) {
-      Entity entity = getEntityAtPosition(x_coord, y_coord);
+      Entity entity = checkEntityAtPosition(x_coord, y_coord);
       return entity != null;
     }
     return true;