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Diffstat (limited to 'games/jetpack/files/patch-aa')
| -rw-r--r-- | games/jetpack/files/patch-aa | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/games/jetpack/files/patch-aa b/games/jetpack/files/patch-aa new file mode 100644 index 000000000000..0f84c1a77b58 --- /dev/null +++ b/games/jetpack/files/patch-aa @@ -0,0 +1,64 @@ +From: dan@netlabs.com (Daniel Ketcham) +Newsgroups: comp.sources.games.bugs +Subject: Re: jetpack out of memory error with no -DBLIT +Message-ID: <1992Mar27.010041.13217@netlabs.com> +Date: 27 Mar 92 01:00:41 GMT + +In article <328@bain3.bain.oz.au>, callum@bain3.bain.oz.au (Callum Gibson) writes: +> I compiled jetpack (which was just posted) in the default way with the -DBLIT +> define in tact. However, the response time was several seconds. I thought +> I'd try it without the -DBLIT to see if it would speed up. It compiled okay +> but when run it failed immediately with an out of memory error. I knocked +> up a little program to read the a.out header and discovered that with -DBLIT +> the bss (uninitialised data segment) was around 344K but without the BLIT +> it was 52Mb !!!!! It was obvious now why it ran out. + +The problem seems to be in that there is an array of around 10,000 elements +that has as one of its elements an array of (you guessed it) 10,000! ints. +I looked at the code a little and came up with the following patch. +Running with this patch I had no problem. + +Dan Ketcham + +*** erase.c.orig Wed Mar 25 17:19:41 1992 +--- erase.c Thu Mar 26 11:19:35 1992 +*************** +*** 11,16 **** +--- 11,17 ---- + + #ifndef BLIT + ++ #define MAXTOUCH 10 + #define MAXOBJECTS 6+MAXLINES+MAXFIREBALLS+MAXSWEEPERS+MAXFUELPODS+MAXGUARDS+MAXHIGHSCORES/5 + + /* Structure for eraseable zones that minimize flicker +*************** +*** 19,25 **** + int type, num; + int x, y, w, h; + int numtouch; +! int touch[MAXOBJECTS]; + int erased, drawn; + }; + +--- 20,26 ---- + int type, num; + int x, y, w, h; + int numtouch; +! int touch[MAXTOUCH]; + int erased, drawn; + }; + +*************** +*** 57,62 **** +--- 58,67 ---- + if(zone_intersect(numzones,j)) { + zones[j].touch[zones[j].numtouch] = numzones; + zones[j].numtouch++; ++ if (zones[j].numtouch == MAXTOUCH) { ++ zones[j].numtouch = -1; ++ printf("Reached maxtouch for zone %d\n", numzones); ++ } + break; + } + } |