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update/revolt: Fix land unit casualties

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Fix the bug demonstrated by the previous commit:
take_casualties_from_lands() limits total casualties to @each.  It
should limit each land unit's casualties, and only if !may_kill.  This
can lead to fewer casualties than called for; oops in
take_casualties().  Broken in commit 025e9cc25, v4.4.0.

Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
This commit is contained in:
Markus Armbruster 2018-04-10 16:31:11 +02:00
parent d111522fe8
commit 60429028e7
4 changed files with 16 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

20
src/lib/update/revolt.c
View file

@ -29,7 +29,7 @@
* Known contributors to this file:
* Dave Pare, 1986
* Steve McClure, 1997-2000
* Markus Armbruster, 2004-2016
* Markus Armbruster, 2004-2018
*/
#include <config.h>
@ -455,26 +455,26 @@ take_casualties(struct sctstr *sp, int mc)
each = (mc - taken) / nunits + 2;
/* kill some security troops */
taken += take_casualties_from_lands(sp, MIN(each, mc - taken), 1, 0);
taken += take_casualties_from_lands(sp, mc - taken, each, 1);
/* kill some normal troops */
taken += take_casualties_from_lands(sp, MIN(each, mc - taken), 0, 0);
taken += take_casualties_from_lands(sp, mc - taken, each, 0);
/* Hmm.. still some left.. kill off units now */
/* kill some normal troops */
taken += take_casualties_from_lands(sp, MIN(each, mc - taken), 0, 1);
taken += take_casualties_from_lands(sp, mc - taken, -1, 0);
/* Hmm.. still some left.. kill off units now */
/* kill some security troops */
taken += take_casualties_from_lands(sp, MIN(each, mc - taken), 1, 1);
taken += take_casualties_from_lands(sp, mc - taken, -1, 1);
CANT_HAPPEN(taken < mc);
return taken;
}
int
take_casualties_from_lands(struct sctstr *sp, int cas,
int security, int may_kill)
take_casualties_from_lands(struct sctstr *sp, int cas, int each,
int security)
{
struct nstr_item ni;
struct lndstr *lp;
@ -495,9 +495,11 @@ take_casualties_from_lands(struct sctstr *sp, int cas,
eff_per_cas = 100.0 / lchr[lp->lnd_type].l_item[I_MILIT];
cantake = lp->lnd_item[I_MILIT];
if (!may_kill)
if (each >= 0) {
cantake = MIN(cantake, each);
cantake = MIN(cantake,
(int)((lp->lnd_effic - 40) / eff_per_cas));
}
deq = MIN(cantake, cas - taken);
if (deq <= 0)
continue;
@ -507,7 +509,7 @@ take_casualties_from_lands(struct sctstr *sp, int cas,
lp->lnd_mobil -= deq * eff_per_cas / 2;
lnd_submil(lp, deq);
if (lp->lnd_effic < LAND_MINEFF) {
CANT_HAPPEN(!may_kill);
CANT_HAPPEN(each >= 0);
taken += lp->lnd_item[I_MILIT];
lnd_dies_fighting_che(lp);
}

6
tests/update/final.xdump
View file

@ -378,9 +378,9 @@ uid owner xloc yloc type effic mobil off tech opx opy mission radius army ship h
22 0 -14 -8 2 0 0 1 50 0 0 none 0 "" -1 0 42 () "" 0 0 0 0 0 0 0 0 10 0 0 0 0 0 healthy 0 -1 0
23 0 -14 -8 2 0 0 1 50 0 0 none 0 "" -1 0 42 () "" 0 0 0 0 0 0 0 0 10 0 0 0 0 0 healthy 0 -1 0
24 4 -12 -8 8 100 60 0 170 0 0 none 0 "" -1 0 42 () "" 0 0 0 0 0 0 0 0 0 0 0 0 0 0 healthy 0 -1 0
25 0 -12 -8 20 0 -44 1 170 0 0 none 0 "" -1 0 42 () "" 0 1 0 0 0 0 0 0 8 0 0 0 0 0 healthy 0 -1 0
25 0 -12 -8 20 0 -45 1 170 0 0 none 0 "" -1 0 42 () "" 0 0 0 0 0 0 0 0 8 0 0 0 0 0 healthy 0 -1 0
26 0 -12 -8 2 0 -2 1 50 0 0 none 0 "" -1 0 42 () "" 0 0 0 0 0 0 0 0 10 0 0 0 0 0 healthy 0 -1 0
27 0 -12 -8 20 0 0 1 170 0 0 none 0 "" -1 0 42 () "" 0 10 0 0 0 0 0 0 10 0 0 0 0 0 healthy 0 -1 0
27 0 -12 -8 20 0 -10 0 170 0 0 none 0 "" -1 0 42 () "" 0 0 0 0 0 0 0 0 10 0 0 0 0 0 healthy 0 -1 0
28 0 -8 -8 1 0 -12 0 50 0 0 none 0 "" -1 0 42 () "" 0 0 0 0 0 0 0 0 9 0 0 0 0 0 healthy 0 -1 0
29 4 -6 -8 2 14 47 0 50 0 0 none 0 "" -1 0 42 () "" 0 24 0 0 0 0 0 0 8 0 0 0 0 0 healthy 0 -1 0
30 2 -16 0 2 88 60 0 50 0 0 none 0 "" -1 0 42 () "" 0 100 0 0 0 0 0 0 7 0 0 0 0 0 healthy 0 -1 0
@ -463,10 +463,10 @@ timestamp owner type id x y
0 4 3 21 -14 -8
0 4 3 22 -14 -8
0 4 3 23 -14 -8
0 4 3 27 -12 -8
0 4 0 0 -12 -8
0 4 3 25 -12 -8
0 4 3 26 -12 -8
0 4 3 27 -12 -8
0 4 3 28 -8 -8
0 4 0 0 -16 -6
0 4 0 0 -8 -6

4
tests/update/journal.log
View file

@ -1364,11 +1364,11 @@
Play#0 output Play#0 1 rebels murder 2 military
Play#0 output Play#0 1 Partisans take over -14,-8!
Play#0 output Play#0 1 sec security #25 kills 4 guerrillas in raid at -12,-8!
Play#0 output Play#0 1 sec security #27 dies fighting guerrillas in -12,-8
Play#0 output Play#0 1 sec security #25 blown up by the crew when POGO took -12,-8!
Play#0 output Play#0 1 inf infantry #26 captured when POGO took -12,-8!
Play#0 output Play#0 1 sec security #27 blown up by the crew when POGO took -12,-8!
Play#0 output Play#0 1 Guerrilla warfare in -12,-8
Play#0 output Play#0 1 rebels murder 59 military
Play#0 output Play#0 1 rebels murder 70 military
Play#0 output Play#0 1 Partisans take over -12,-8!
Play#0 output Play#0 1 Guerrilla warfare in -10,-8
Play#0 output Play#0 1 body count: troops: 10, rebels: 5

2
tests/update/server.log
View file

@ -39,8 +39,6 @@ tester@127.0.0.1 logged in as country #0
Triggering unscheduled update
production update (60 ETUs)
preparing sectors...
Oops: taken < mc in ../src/lib/update/revolt.c:471
Crash dump complete
done preparing sectors.
producing for countries...
done producing for countries.