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Path: utzoo!sq!hobie
From: hobie@sq.UUCP
Newsgroups: comp.sys.amiga
Subject: BOBs and KS 1.2
Message-ID: <1987Sep16.132922.8847@sq.uucp>
Date: Wed, 16-Sep-87 13:29:22 EDT
Article-I.D.: sq.1987Sep16.132922.8847
Posted: Wed Sep 16 13:29:22 1987
Date-Received: Fri, 18-Sep-87 04:50:09 EDT
Reply-To: hobie@sq.uucp (Hobie Orris)
Organization: SoftQuad Inc., Toronto
Lines: 28
Keywords: Losing situation.
Checksum: 32418

	I have just written a program using BOBs that does not display the BOB
I ask it to display, but otherwise works just fine.  After carefully going
over my (admittedly old) Rom Kernel Manual and Programmer's Guide (also 
old, version 1) I could find no error in what I had done.  Being naturally
suspicious from dealing too long with an Amiga, I booted my copy of KickStart
1.1 and ran the program again.  It worked exactly as intended.  So my 
question is: what's different in BOBs between KS 1.1 and KS 1.2?  This is
the initialization sequence of my BOB that works under 1.1:

   InitMasks(&starshipVS);             /* create VSprite collision masks */
   InitGels(&dummy1, &dummy2, &mygel); /* set up 2 dummy VSprites in list */
   rp->GelsInfo = &mygel;              /* link GelsInfo (not in RKM!!!) */
   AddBob(&starshipBob, rp);           /* put BOB in Gels list */
   SortGList(rp);                      /* obligatory sorting of list */
   DrawGList(rp, MyVP);                /* draw all BOBs in list */

The BOB, starshipBob, was generated by NGI from a DPaint II brush.  The var-
iable `rp' is a pointer to a window RastPort; `MyVP' is derived from calling
ViewPortAddress(win) and getting a ViewPort structure for the window `win'.
One notable event: NGI does not initialize the field BorderLine in the 
VSprite structure, which I had to do to stop the program from crashing.

	I would appreciate any help in solving this puzzle (I'll even give you a
copy of the source).  Gratias tibi maximas!

 Hobie Orris			 	| 	
 guest of SoftQuad Inc., Toronto, Ont.	|"There'll be no more giant leeches
 {ihnp4 | decvax | ? }!utzoo!sq!hobie	| When you find the good Lord Jesus"