Add function obj::hasHeadImg()

We can check for the existence of an object's background image by
calling getBgImg(), since it returns NULL when there is no such image.
But getHeadImg() behaves differently, returning a path to
'static/img/null.jpg' (via df.php) when there is no image, making it
more difficult to tell.  This function addresses this concern.

1 files changed, 10 insertions, 0 deletions

diff --git a/app/class/obj.class.php b/app/class/obj.class.php
index 4e44649..003738b 100644
--- a/app/class/obj.class.php
+++ b/app/class/obj.class.php
@@ -212,6 +212,16 @@ class obj extends table
     }
 
     /*
+     * Check whether object has a custom head set.  This is necessary, since
+     * getHeadImg() will return a path to a default if the object doesn't
+     * have its own.
+     */
+    public function hasHeadImg() : bool
+    {
+        return is_file("dynmic/heads/" . $this->guid);
+    }
+
+    /*
      * Get the URL to the head image resource for this object
      */
     public function getHeadImg() : string