Whole-object click

Hey guys, back again. I have an object that responds to a click by changing texture. The only problem is that I have to click each prim in order for it to change. Is there a way for the entire object to act touched when only one prim truly is?

Edit:
Also, sometimes only the root prim changes.

Clicking on a child prim will, by default*, pass the touch to scripts in the root prim. However, touches cannot be passed from root-to-child or child-to-child.

The best way to do what you want would be have a single touch handler in a root prim script and have that broadcast a link message to the children to do whatever.

Root:

default
{
    touch_start( integer Num )
    {
        // Note, this is an "empty" message
        llMessageLinked( LINK_ALL_CHILDREN, 0, "", "" );
    }
}

Children:

default
{
    link_message( integer Sender, integer Num, string Str, key ID )
    {
        // Code here will be executed whenever
        // any part of the object is touched
    }
}

*If you have a touch event handler in a child prim, only that child's touch event will be raised, unless you call llPassTouches( TRUE ) before a touch (e.g., in it's default state_entry handler). This will cause the touch event in the root to also be raised when that child prim is touched.