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Simplify use of shp_missile_interdiction()

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shp_missile_interdiction() does nothing when there are no suitable
targets.  Its users avoid to call it when there are none, probably to
save a few cycles.  Optimize shp_missile_interdiction() for that case,
and simplify the callers.
This commit is contained in:
Markus Armbruster 2010-01-01 16:38:47 +01:00
parent 132b52a475
commit a90b3e8819
1 changed files with 17 additions and 18 deletions
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13
src/lib/subs/shpsub.c
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@ -486,13 +486,16 @@ shp_missile_interdiction(struct emp_qelem *list, coord newx, coord newy,
struct plist *plp;
struct ulist *mvs;
mvs = most_valuable_ship(list, newx, newy);
if (!mvs)
return 0;
msl_sel(&msl_list, newx, newy, victim, P_T | P_MAR, 0, MI_INTERDICT);
for (qp = msl_list.q_back; qp != &msl_list; qp = newqp) {
newqp = qp->q_back;
plp = (struct plist *)qp;
mvs = most_valuable_ship(list, newx, newy);
if (mvs && mission_pln_equip(plp, NULL, 'p') >= 0) {
if (msl_launch(&plp->plane, EF_SHIP, prship(&mvs->unit.ship),
newx, newy, victim, &sublaunch) < 0)
@ -512,6 +515,7 @@ shp_missile_interdiction(struct emp_qelem *list, coord newx, coord newy,
dam = pln_damage(&plp->plane, 'p', 0);
collateral_damage(newx, newy, dam);
}
mvs = most_valuable_ship(list, newx, newy);
use_up_msl:
plp->plane.pln_effic = 0;
putplane(plp->plane.pln_uid, &plp->plane);
@ -651,10 +655,7 @@ shp_interdict(struct emp_qelem *list, coord newx, coord newy, natid victim)
shp_easiest_target(list, 0, M_SUB),
MI_INTERDICT),
0, M_SUB, newx, newy);
if (most_valuable_ship(list, newx, newy)) {
stopping |=
shp_missile_interdiction(list, newx, newy, victim);
}
stopping |= shp_missile_interdiction(list, newx, newy, victim);
}
}
if (shp_contains(list, newx, newy, M_SUB, 0)) {
@ -909,7 +910,6 @@ shp_missdef(struct shpstr *sp, natid victim)
sprintf(buf, "%s", prship(&mlp->unit.ship));
eff = sp->shp_effic;
if (most_valuable_ship(&list, sp->shp_x, sp->shp_y)) {
shp_missile_interdiction(&list, sp->shp_x, sp->shp_y, sp->shp_own);
getship(sp->shp_uid, sp);
@ -923,7 +923,6 @@ shp_missdef(struct shpstr *sp, natid victim)
"missiles launched in defense did %d%% damage to %s\n",
100 * (eff - sp->shp_effic) / eff, buf);
}
}
if (!QEMPTY(&list))
free(mlp);
}