nethack-gwaa-kiwi/nethack
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Make free actions easier to predict, nonfree actions more predictable

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This fixes melee kiting more comprehensively (it now doesn't work
against slower monsters either), and prevents you doing things like
opening up a gap when running from an imp (you couldn't do that in
3.4.3).
This commit is contained in:
Alex Smith
2016-11-12 01:24:03 +00:00
parent 897916f921
commit 11625c0772
2 changed files with 23 additions and 20 deletions
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13
src/allmain.c
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@@ -132,14 +132,13 @@ boolean resuming;
moveamt = youmonst.data->mmove;
if (Very_fast) { /* speed boots or potion */
/* average movement is 1.67 times normal */
moveamt += NORMAL_SPEED / 2;
if (rn2(3) == 0)
moveamt += NORMAL_SPEED / 2;
} else if (Fast) {
/* average movement is 1.33 times normal */
/* gain a free action on 2/3 of turns */
if (rn2(3) != 0)
moveamt += NORMAL_SPEED / 2;
moveamt += NORMAL_SPEED;
} else if (Fast) {
/* gain a free action on 1/3 of turns */
if (rn2(3) == 0)
moveamt += NORMAL_SPEED;
}
}

30
src/mon.c
View File

@@ -582,6 +582,7 @@ mcalcmove(mon)
struct monst *mon;
{
int mmove = mon->data->mmove;
int mmove_adj;
/* Note: MSLOW's `+ 1' prevents slowed speed 1 getting reduced to 0;
* MFAST's `+ 2' prevents hasted speed 1 from becoming a no-op;
@@ -592,21 +593,24 @@ struct monst *mon;
else if (mon->mspeed == MFAST)
mmove = (4 * mmove + 2) / 3;
if (mon == u.usteed) {
if (u.ugallop && context.mv) {
/* average movement is 1.50 times normal */
mmove = ((rn2(2) ? 4 : 5) * mmove) / 3;
}
} else if (mmove) {
/* vary movement points allocated to slightly reduce predictability;
random increment (avg +2) exceeds random decrement (avg +1) by
a small amount; normal speed monsters will occasionally get an
extra move and slow ones won't be quite as slow */
mmove += rn2(5) - rn2(3); /* + 0..4 - 0..2, average net +1 */
if (mmove < 1)
mmove = 1;
if (mon == u.usteed && u.ugallop && context.mv) {
/* increase movement by a factor of 1.5; also increase variance of
movement speed (if it's naturally 24, we don't want it to always
become 36) */
mmove = ((rn2(2) ? 4 : 5) * mmove) / 3;
}
/* Randomly round the monster's speed to a multiple of NORMAL_SPEED. This
makes it impossible for the player to predict when they'll get a free
turn (thus preventing exploits like "melee kiting"), while retaining
guarantees about shopkeepers not being outsped by a normal-speed player,
normal-speed players being unable to open up a gap when fleeing a
normal-speed monster, etc.*/
mmove_adj = mmove % NORMAL_SPEED;
mmove -= mmove_adj;
if (rn2(NORMAL_SPEED) < mmove_adj)
mmove += NORMAL_SPEED;
return mmove;
}