dae@psuvax1.UUCP (David Eckhardt) (08/12/84)
<one for the line-eater>
(1) AAAAAAAARRRRRRRRRRRRGGGGGGGGGGGGHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!
(2) AAAAAAAARRRRRRRRRRRRGGGGGGGGGGGGHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!
(3) Just before the game decided to go out to lunch, I happened to
find a trap. Naturally enough, I identified it. It was a
"PPZZPSPW=PDPDSS=" trap, one which did absolutely no damage.
Shortly thereafter, the game left town.
(4) Why don't some nice people somewhere who have the sources
(hint to authors) *fix* this bug?
Just a possible clue...
--
--Daemon dae@{psuvax1.{bitnet, uucp}, penn-state.csnet}
"I will have no covenants but proximities" -- R. W. Emersonron@wjvax.UUCP (Ron Christian) (09/18/84)
Here's another clue on the mechanism that produces what we call the save game bug. A friend says he suspects it's a malloc problem, and I think I now agree. In my last game, I got the save game bug when I started to enter a room. If I went down the hall in the opposite direction, everything was fine, but if I tried to enter the room in the upper right hand corner, the game saved itself. This happened as soon as I tried to move over the +, and when I reentered the game, my @ appeared in the hall as if I hadn't made that move. This room had to be REALLY small, as the hallway came up real close to the right hand edge, and the + was practically in the corner of the screen. Is it possible that rogue blunders occasionally when it tries to create a room, generating an error? I guess the game traps all error signals and tries to save itself, so a 'segmentation fault' or some such thing would cause the game to save itself. This was on level 27 in 5.3 rogue. Or, since this bug only happens on the best games at the highest levels, could rogue simply not be allocating enough memory for data storage? Along about level 27 we run out of allocated memory, the shell complains, and boom! the game saves itself. Comments? Another interesting thing, since the game would not be posted after I got out of there, I restarted it with a |tee to a file name so I'd have a record of the score. This is after escaping the level of the non-room. With a |tee, I couldn't use the <control>Y move in rogue, as it caused the game to be put in the background. Facinating. -- "Trivia is important." Ron Christian (syntax bug) Watkins-Johnson Co. San Jose, Calif. (...ios!wjvax!ron)
robison@eosp1.UUCP (Tobias D. Robison) (09/21/84)
References: In rogue 5.2 I also had the experience of the game saving itself when I stepped on a "+" sign. The problem was 100% repeatable; I was trying to move OUT of a room. After the game saved itself several times, I exited thru another door and everything was fine. - Toby Robison (not Robinson!) allegra!eosp1!robison or: decvax!ittvax!eosp1!robison or (emergency): princeton!eosp1!robison
laman@sdcsvax.UUCP (Mike Laman) (09/24/84)
Organization: Keywords: In article <1135@eosp1.UUCP> robison@eosp1.UUCP (Tobias D. Robison) writes: > >In rogue 5.2 I also had the experience of the game saving itself when >I stepped on a "+" sign. The problem was 100% repeatable; I was trying >to move OUT of a room. After the game saved itself several times, I >exited thru another door and everything was fine. > > - Toby Robison (not Robinson!) > allegra!eosp1!robison > or: decvax!ittvax!eosp1!robison > or (emergency): princeton!eosp1!robison Well, I have a fix for 5.3 (Sorry. Maybe 5.2 is similar). Starting at "leave_room+fb" (hex offset obviously) you will see: calls $1,_wstandend incl r7 brw leave_room+6d extzv $0,$7,-2(fp),r0 bbc $0,__ctype_+1[r0],SomeAddressFartherDown bbs $14,_Player+24,leave_room+d7 cmpb (r10),$43 Opps! If you look all through this routine you'll see that "r10" is NOT INITIALIZED! I leave this as an exercise to someone to find a way to squeeze in the following change :-). Oh, this routine seems to be optimized code, so it'll be a little tougher to find the room in the function. In case you're curious, this uninitialized pointer gets referenced when you leave a room with a monster showing on your screen when you do NOT have the ability to detect monsters. If you think about that, you will see that this isn't all that common. Who can resist not hacking a monster to bits :-)? This situation occurs more often in the deeper levels doesn't it! "Ah!" you say. Change the "cmpb (r10),$43" to: ashl $5,r7,r1 addl2 r8,r1 ashl $3,r1,r1 cmpb (r1),$43 Feel free to optimize this. Sorry, but I don't have the source. Now if someone can come up with the patch. Sorry, but I don't have that either. Please post the patch, so we can be spared this bug. Mike Laman UUCP: {ucbvax,philabs,sdcsla}!sdcsvax!laman
laman@sdcsvax.UUCP (Mike Laman) (09/25/84)
Organization: Keywords: In article <86@sdcsvax.UUCP> laman@sdcsvax.UUCP (Mike Laman) writes (Yea, that's me! Ohhhh. How embariskin.): > : > : > : > >Change the "cmpb (r10),$43" to: > > ashl $5,r7,r1 > addl2 r8,r1 > ashl $3,r1,r1 > cmpb (r1),$43 Opps that should be: ashl $5,r7,r1 addl2 r8,r1 ashl $3,r1,r1 cmpb Places(r1),$43 <===== Here is the change to my change I'm sorry! Mike Laman UUCP: {ucbvax,philabs,sdcsla}!sdcsvax!laman
steiner@bgsuvax.UUCP (Ray Steiner) (09/26/84)
I have found a bug in Rogue, version 5.3,related to the save game bug. Often it is impossible to restart a saved game. The game position is reproduced on the screen OK, but it is impossible to make a move. For example, if one tries to move in the "h" direction a bunch of h's appears on the screen and then the program interrupts itself. Would anyone know what causes this bug and how to get around it? -- Ray Steiner Bowling Green State University
steiner@bgsuvax.UUCP (Ray Steiner) (10/02/84)
I too have been bit by the save game bug. It was on level 13 of Version
5.3 rogue. I was under a potion of hallucination at the time. I had
just dropped a suit of armour because my pack was too full in order to
pick up a scroll. As soon as I picked up the scroll, BOOM! the game
saved itself. Worse yet, I could not restart it, due to the other
bug mentioned in my previous article. I hope this is of some help
to those of you trying to fix this bug.
By the way, a group of avid Rogue fans here would like to know
if any of you have ever found the Amulet of Yendor, and, if so, on
what level this occurred.
ZZ
guest@duke.UUCP (John Q. Public) (10/05/84)
The amulet in v5.3 is on level 26.