root/games/sail/pl_3.c
/*      $OpenBSD: pl_3.c,v 1.6 2016/01/08 20:26:33 mestre Exp $ */
/*      $NetBSD: pl_3.c,v 1.3 1995/04/22 10:37:09 cgd Exp $     */

/*
 * Copyright (c) 1983, 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. 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.
 */

#include <signal.h>
#include <stdlib.h>

#include "extern.h"
#include "machdep.h"
#include "player.h"

void
acceptcombat(void)
{
        int men = 0;
        int target, temp;
        int n, r;
        int index, rakehim, sternrake;
        int hhits = 0, ghits = 0, rhits = 0, chits = 0;
        int crew[3];
        int load;
        int guns, car, ready, shootat, hit;
        int roll;
        struct ship *closest;

        crew[0] = mc->crew1;
        crew[1] = mc->crew2;
        crew[2] = mc->crew3;
        for (n = 0; n < 3; n++) {
                if (mf->OBP[n].turnsent)
                        men += mf->OBP[n].mensent;
        }
        for (n = 0; n < 3; n++) {
                if (mf->DBP[n].turnsent)
                        men += mf->DBP[n].mensent;
        }
        if (men) {
                crew[0] = men/100 ? 0 : crew[0] != 0;
                crew[1] = (men%100)/10 ? 0 : crew[1] != 0;
                crew[2] = men%10 ? 0 : crew[2] != 0;
        }
        for (r = 0; r < 2; r++) {
                if (r) {
                        ready = mf->readyR;
                        load = mf->loadR;
                        guns = mc->gunR;
                        car = mc->carR;
                } else {
                        ready = mf->readyL;
                        load = mf->loadL;
                        guns = mc->gunL;
                        car = mc->carL;
                }
                if ((!guns && !car) || load == L_EMPTY || (ready & R_LOADED) == 0)
                        goto cant;
                if (mf->struck || !crew[2])
                        goto cant;
                closest = closestenemy(ms, (r ? 'r' : 'l'), 1);
                if (closest == 0)
                        goto cant;
                if (closest->file->struck)
                        goto cant;
                target = range(ms, closest);
                if (target > rangeofshot[load] || (!guns && target >= 3))
                        goto cant;
                Signal("$$ within range of %s broadside.",
                        closest, r ? "right" : "left");
                if (load > L_CHAIN && target < 6) {
                        switch (sgetch("Aim for hull or rigging? ",
                                (struct ship *)0, 1)) {
                        case 'r':
                                shootat = RIGGING;
                                break;
                        case 'h':
                                shootat = HULL;
                                break;
                        default:
                                shootat = -1;
                                Msg("'Avast there! Hold your fire.'");
                        }
                } else {
                        if (sgetch("Fire? ", (struct ship *)0, 1) == 'n') {
                                shootat = -1;
                                Msg("Belay that! Hold your fire.");
                        } else
                                shootat = RIGGING;
                }
                if (shootat == -1)
                        continue;
                fired = 1;
                rakehim = gunsbear(ms, closest) && !gunsbear(closest, ms);
                temp = portside(closest, ms, 1) - closest->file->dir + 1;
                if (temp < 1)
                        temp += 8;
                else if (temp > 8)
                        temp -= 8;
                sternrake = temp > 4 && temp < 6;
                if (rakehim) {
                        if (!sternrake)
                                Msg("Raking the %s!", closest->shipname);
                        else
                                Msg("Stern Rake! %s splintering!",
                                    closest->shipname);
                }
                index = guns;
                if (target < 3)
                        index += car;
                index = (index - 1)/3;
                index = index > 8 ? 8 : index;
                if (!rakehim)
                        hit = HDT[index][target-1];
                else
                        hit = HDTrake[index][target-1];
                if (rakehim && sternrake)
                        hit++;
                hit += QUAL[index][mc->qual-1];
                for (n = 0; n < 3 && mf->captured == 0; n++)
                        if (!crew[n]) {
                                if (index <= 5)
                                        hit--;
                                else
                                        hit -= 2;
                        }
                if (ready & R_INITIAL) {
                        if (index <= 3)
                                hit++;
                        else
                                hit += 2;
                }
                if (mf->captured != 0) {
                        if (index <= 1)
                                hit--;
                        else
                                hit -= 2;
                }
                hit += AMMO[index][load - 1];
                if (((temp = mc->class) >= 5 || temp == 1) && windspeed == 5)
                        hit--;
                if (windspeed == 6 && temp == 4)
                        hit -= 2;
                if (windspeed == 6 && temp <= 3)
                        hit--;
                if (hit >= 0) {
                        roll = die();
                        if (load == L_GRAPE)
                                chits = hit;
                        else {
                                const struct Tables *t;
                                if (hit > 10)
                                        hit = 10;
                                t = &(shootat == RIGGING ? RigTable : HullTable)
                                        [hit][roll-1];
                                chits = t->C;
                                rhits = t->R;
                                hhits = t->H;
                                ghits = t->G;
                                if (closest->file->FS)
                                        rhits *= 2;
                                if (load == L_CHAIN) {
                                        ghits = 0;
                                        hhits = 0;
                                }
                        }
                        table(shootat, load, hit, closest, ms, roll);
                }
                Msg("Damage inflicted on the %s:", closest->shipname);
                Msg("\t%d HULL, %d GUNS, %d CREW, %d RIGGING",
                    hhits, ghits, chits, rhits);
                if (!r) {
                        mf->loadL = L_EMPTY;
                        mf->readyL = R_EMPTY;
                } else {
                        mf->loadR = L_EMPTY;
                        mf->readyR = R_EMPTY;
                }
                continue;
        cant:
                Msg("Unable to fire %s broadside", r ? "right" : "left");
        }
        blockalarm();
        draw_stat();
        unblockalarm();
}

void
grapungrap(void)
{
        struct ship *sp;
        int i;

        foreachship(sp) {
                if (sp == ms || sp->file->dir == 0)
                        continue;
                if (range(ms, sp) > 1 && !grappled2(ms, sp))
                        continue;
                switch (sgetch("Attempt to grapple or ungrapple $$: ",
                        sp, 1)) {
                case 'g':
                        if (die() < 3
                            || ms->nationality == capship(sp)->nationality) {
                                Write(W_GRAP, ms, sp->file->index, 0, 0, 0);
                                Write(W_GRAP, sp, player, 0, 0, 0);
                                Msg("Attempt succeeds!");
                                makesignal(ms, "grappled with $$", sp);
                        } else
                                Msg("Attempt fails.");
                        break;
                case 'u':
                        for (i = grappled2(ms, sp); --i >= 0;) {
                                if (ms->nationality
                                        == capship(sp)->nationality
                                    || die() < 3) {
                                        cleangrapple(ms, sp, 0);
                                        Msg("Attempt succeeds!");
                                        makesignal(ms, "ungrappling with $$",
                                                sp);
                                } else
                                        Msg("Attempt fails.");
                        }
                        break;
                }
        }
}

void
unfoulplayer(void)
{
        struct ship *to;
        int i;

        foreachship(to) {
                if (fouled2(ms, to) == 0)
                        continue;
                if (sgetch("Attempt to unfoul with the $$? ", to, 1) != 'y')
                        continue;
                for (i = fouled2(ms, to); --i >= 0;) {
                        if (die() <= 2) {
                                cleanfoul(ms, to, 0);
                                Msg("Attempt succeeds!");
                                makesignal(ms, "Unfouling $$", to);
                        } else
                                Msg("Attempt fails.");
                }
        }
}