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freebsd-dev/games/mille/comp.c
Jordan K. Hubbard 554eb505f8 Bring in the 4.4 Lite games directory, modulo man page changes and segregation 
of the x11 based games.  I'm not going to tag the originals with bsd_44_lite
and do this in two stages since it's just not worth it for this collection,
and I've got directory renames to deal with that way.  Bleah.
Submitted by:	jkh
1994-09-04 04:03:31 +00:00

480 lines
12 KiB
C
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/*
* Copyright (c) 1982, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)comp.c 8.1 (Berkeley) 5/31/93";
#endif /* not lint */
# include "mille.h"
/*
* @(#)comp.c 1.1 (Berkeley) 4/1/82
*/
# define V_VALUABLE 40
calcmove()
{
register CARD card;
register int *value;
register PLAY *pp, *op;
register bool foundend, cango, canstop, foundlow;
register unsgn int i, count200, badcount, nummin, nummax, diff;
register int curmin, curmax;
register CARD safe, oppos;
int valbuf[HAND_SZ], count[NUM_CARDS];
bool playit[HAND_SZ];
wmove(Score, ERR_Y, ERR_X); /* get rid of error messages */
wclrtoeol(Score);
pp = &Player[COMP];
op = &Player[PLAYER];
safe = 0;
cango = 0;
canstop = FALSE;
foundend = FALSE;
/* Try for a Coup Forre, and see what we have. */
for (i = 0; i < NUM_CARDS; i++)
count[i] = 0;
for (i = 0; i < HAND_SZ; i++) {
card = pp->hand[i];
switch (card) {
case C_STOP: case C_CRASH:
case C_FLAT: case C_EMPTY:
if (playit[i] = canplay(pp, op, card))
canstop = TRUE;
goto norm;
case C_LIMIT:
if ((playit[i] = canplay(pp, op, card))
&& Numseen[C_25] == Numcards[C_25]
&& Numseen[C_50] == Numcards[C_50])
canstop = TRUE;
goto norm;
case C_25: case C_50: case C_75:
case C_100: case C_200:
if ((playit[i] = canplay(pp, op, card))
&& pp->mileage + Value[card] == End)
foundend = TRUE;
goto norm;
default:
playit[i] = canplay(pp, op, card);
norm:
if (playit[i])
++cango;
break;
case C_GAS_SAFE: case C_DRIVE_SAFE:
case C_SPARE_SAFE: case C_RIGHT_WAY:
if (pp->battle == opposite(card) ||
(pp->speed == C_LIMIT && card == C_RIGHT_WAY)) {
Movetype = M_PLAY;
Card_no = i;
return;
}
++safe;
playit[i] = TRUE;
break;
}
if (card >= 0)
++count[card];
}
/* No Coup Forre. Draw to fill hand, then restart, as needed. */
if (pp->hand[0] == C_INIT && Topcard > Deck) {
Movetype = M_DRAW;
return;
}
#ifdef DEBUG
if (Debug)
fprintf(outf, "CALCMOVE: cango = %d, canstop = %d, safe = %d\n",
cango, canstop, safe);
#endif
if (foundend)
foundend = !check_ext(TRUE);
for (i = 0; safe && i < HAND_SZ; i++) {
if (issafety(pp->hand[i])) {
if (onecard(op) || (foundend && cango && !canstop)) {
#ifdef DEBUG
if (Debug)
fprintf(outf,
"CALCMOVE: onecard(op) = %d, foundend = %d\n",
onecard(op), foundend);
#endif
playsafe:
Movetype = M_PLAY;
Card_no = i;
return;
}
oppos = opposite(pp->hand[i]);
if (Numseen[oppos] == Numcards[oppos] &&
!(pp->hand[i] == C_RIGHT_WAY &&
Numseen[C_LIMIT] != Numcards[C_LIMIT]))
goto playsafe;
else if (!cango
&& (op->can_go || !pp->can_go || Topcard < Deck)) {
card = (Topcard - Deck) - roll(1, 10);
if ((!pp->mileage) != (!op->mileage))
card -= 7;
#ifdef DEBUG
if (Debug)
fprintf(outf,
"CALCMOVE: card = %d, DECK_SZ / 4 = %d\n",
card, DECK_SZ / 4);
#endif
if (card < DECK_SZ / 4)
goto playsafe;
}
safe--;
playit[i] = cango;
}
}
if (!pp->can_go && !isrepair(pp->battle))
Numneed[opposite(pp->battle)]++;
redoit:
foundlow = (cango || count[C_END_LIMIT] != 0
|| Numseen[C_LIMIT] == Numcards[C_LIMIT]
|| pp->safety[S_RIGHT_WAY] != S_UNKNOWN);
foundend = FALSE;
count200 = pp->nummiles[C_200];
badcount = 0;
curmax = -1;
curmin = 101;
nummin = -1;
nummax = -1;
value = valbuf;
for (i = 0; i < HAND_SZ; i++) {
card = pp->hand[i];
if (issafety(card) || playit[i] == (cango != 0)) {
#ifdef DEBUG
if (Debug)
fprintf(outf, "CALCMOVE: switch(\"%s\")\n",
C_name[card]);
#endif
switch (card) {
case C_25: case C_50:
diff = End - pp->mileage;
/* avoid getting too close */
if (Topcard > Deck && cango && diff <= 100
&& diff / Value[card] > count[card]
&& (card == C_25 || diff % 50 == 0)) {
if (card == C_50 && diff - 50 == 25
&& count[C_25] > 0)
goto okay;
*value = 0;
if (--cango <= 0)
goto redoit;
break;
}
okay:
*value = (Value[card] >> 3);
if (pp->speed == C_LIMIT)
++*value;
else
--*value;
if (!foundlow
&& (card == C_50 || count[C_50] == 0)) {
*value = (pp->mileage ? 10 : 20);
foundlow = TRUE;
}
goto miles;
case C_200:
if (++count200 > 2) {
*value = 0;
break;
}
case C_75: case C_100:
*value = (Value[card] >> 3);
if (pp->speed == C_LIMIT)
--*value;
else
++*value;
miles:
if (pp->mileage + Value[card] > End)
*value = (End == 700 ? card : 0);
else if (pp->mileage + Value[card] == End) {
*value = (foundend ? card : V_VALUABLE);
foundend = TRUE;
}
break;
case C_END_LIMIT:
if (pp->safety[S_RIGHT_WAY] != S_UNKNOWN)
*value = (pp->safety[S_RIGHT_WAY] ==
S_PLAYED ? -1 : 1);
else if (pp->speed == C_LIMIT &&
End - pp->mileage <= 50)
*value = 1;
else if (pp->speed == C_LIMIT
|| Numseen[C_LIMIT] != Numcards[C_LIMIT]) {
safe = S_RIGHT_WAY;
oppos = C_LIMIT;
goto repair;
}
else {
*value = 0;
--count[C_END_LIMIT];
}
break;
case C_REPAIRS: case C_SPARE: case C_GAS:
safe = safety(card) - S_CONV;
oppos = opposite(card);
if (pp->safety[safe] != S_UNKNOWN)
*value = (pp->safety[safe] ==
S_PLAYED ? -1 : 1);
else if (pp->battle != oppos
&& (Numseen[oppos] == Numcards[oppos] ||
Numseen[oppos] + count[card] >
Numcards[oppos])) {
*value = 0;
--count[card];
}
else {
repair:
*value = Numcards[oppos] * 6;
*value += Numseen[card] -
Numseen[oppos];
if (!cango)
*value /= (count[card]*count[card]);
count[card]--;
}
break;
case C_GO:
if (pp->safety[S_RIGHT_WAY] != S_UNKNOWN)
*value = (pp->safety[S_RIGHT_WAY] ==
S_PLAYED ? -1 : 2);
else if (pp->can_go
&& Numgos + count[C_GO] == Numneed[C_GO]) {
*value = 0;
--count[C_GO];
}
else {
*value = Numneed[C_GO] * 3;
*value += (Numseen[C_GO] - Numgos);
*value /= (count[C_GO] * count[C_GO]);
count[C_GO]--;
}
break;
case C_LIMIT:
if (op->mileage + 50 >= End) {
*value = (End == 700 && !cango);
break;
}
if (canstop || (cango && !op->can_go))
*value = 1;
else {
*value = (pp->safety[S_RIGHT_WAY] !=
S_UNKNOWN ? 2 : 3);
safe = S_RIGHT_WAY;
oppos = C_END_LIMIT;
goto normbad;
}
break;
case C_CRASH: case C_EMPTY: case C_FLAT:
safe = safety(card) - S_CONV;
oppos = opposite(card);
*value = (pp->safety[safe]!=S_UNKNOWN ? 3 : 4);
normbad:
if (op->safety[safe] == S_PLAYED)
*value = -1;
else {
*value *= Numneed[oppos] +
Numseen[oppos] + 2;
if (!pp->mileage || foundend ||
onecard(op))
*value += 5;
if (op->mileage == 0 || onecard(op))
*value += 5;
if (op->speed == C_LIMIT)
*value -= 3;
if (cango &&
pp->safety[safe] != S_UNKNOWN)
*value += 3;
if (!cango)
*value /= ++badcount;
}
break;
case C_STOP:
if (op->safety[S_RIGHT_WAY] == S_PLAYED)
*value = -1;
else {
*value = (pp->safety[S_RIGHT_WAY] !=
S_UNKNOWN ? 3 : 4);
*value *= Numcards[C_STOP] +
Numseen[C_GO];
if (!pp->mileage || foundend ||
onecard(op))
*value += 5;
if (!cango)
*value /= ++badcount;
if (op->mileage == 0)
*value += 5;
if ((card == C_LIMIT &&
op->speed == C_LIMIT) ||
!op->can_go)
*value -= 5;
if (cango && pp->safety[S_RIGHT_WAY] !=
S_UNKNOWN)
*value += 5;
}
break;
case C_GAS_SAFE: case C_DRIVE_SAFE:
case C_SPARE_SAFE: case C_RIGHT_WAY:
*value = cango ? 0 : 101;
break;
case C_INIT:
*value = 0;
break;
}
}
else
*value = cango ? 0 : 101;
if (card != C_INIT) {
if (*value >= curmax) {
nummax = i;
curmax = *value;
}
if (*value <= curmin) {
nummin = i;
curmin = *value;
}
}
#ifdef DEBUG
if (Debug)
mvprintw(i + 6, 2, "%3d %-14s", *value,
C_name[pp->hand[i]]);
#endif
value++;
}
if (!pp->can_go && !isrepair(pp->battle))
Numneed[opposite(pp->battle)]++;
if (cango) {
play_it:
mvaddstr(MOVE_Y + 1, MOVE_X, "PLAY\n");
Movetype = M_PLAY;
Card_no = nummax;
}
else {
if (issafety(pp->hand[nummin])) { /* NEVER discard a safety */
nummax = nummin;
goto play_it;
}
mvaddstr(MOVE_Y + 1, MOVE_X, "DISCARD\n");
Movetype = M_DISCARD;
Card_no = nummin;
}
mvprintw(MOVE_Y + 2, MOVE_X, "%16s", C_name[pp->hand[Card_no]]);
}
/*
* Return true if the given player could conceivably win with his next card.
*/
onecard(pp)
register PLAY *pp;
{
register CARD bat, spd, card;
bat = pp->battle;
spd = pp->speed;
card = -1;
if (pp->can_go || ((isrepair(bat) || bat == C_STOP || spd == C_LIMIT) &&
Numseen[S_RIGHT_WAY] != 0) ||
bat >= 0 && Numseen[safety(bat)] != 0)
switch (End - pp->mileage) {
case 200:
if (pp->nummiles[C_200] == 2)
return FALSE;
card = C_200;
/* FALLTHROUGH */
case 100:
case 75:
if (card == -1)
card = (End - pp->mileage == 75 ? C_75 : C_100);
if (spd == C_LIMIT)
return Numseen[S_RIGHT_WAY] == 0;
case 50:
case 25:
if (card == -1)
card = (End - pp->mileage == 25 ? C_25 : C_50);
return Numseen[card] != Numcards[card];
}
return FALSE;
}
canplay(pp, op, card)
register PLAY *pp, *op;
register CARD card;
{
switch (card) {
case C_200:
if (pp->nummiles[C_200] == 2)
break;
/* FALLTHROUGH */
case C_75: case C_100:
if (pp->speed == C_LIMIT)
break;
/* FALLTHROUGH */
case C_50:
if (pp->mileage + Value[card] > End)
break;
/* FALLTHROUGH */
case C_25:
if (pp->can_go)
return TRUE;
break;
case C_EMPTY: case C_FLAT: case C_CRASH:
case C_STOP:
if (op->can_go && op->safety[safety(card) - S_CONV] != S_PLAYED)
return TRUE;
break;
case C_LIMIT:
if (op->speed != C_LIMIT &&
op->safety[S_RIGHT_WAY] != S_PLAYED &&
op->mileage + 50 < End)
return TRUE;
break;
case C_GAS: case C_SPARE: case C_REPAIRS:
if (pp->battle == opposite(card))
return TRUE;
break;
case C_GO:
if (!pp->can_go &&
(isrepair(pp->battle) || pp->battle == C_STOP))
return TRUE;
break;
case C_END_LIMIT:
if (pp->speed == C_LIMIT)
return TRUE;
}
return FALSE;
}
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