/*      $OpenBSD: assorted.c,v 1.8 2016/01/08 20:26:33 mestre Exp $     */
/*      $NetBSD: assorted.c,v 1.3 1995/04/22 10:36:45 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 <err.h>
#include <stdlib.h>

#include "extern.h"

static void strike(struct ship *, struct ship *);

void
table(int rig, int shot, int hittable, struct ship *on, struct ship *from,
    int roll)
{
        int hhits = 0, chits = 0, ghits = 0, rhits = 0;
        int Ghit = 0, Hhit = 0, Rhit = 0, Chit = 0;
        int guns, car, pc, hull;
        int crew[3];
        int n;
        int rigg[4];
        const char *message;
        const struct Tables *tp;

        pc = on->file->pcrew;
        hull = on->specs->hull;
        crew[0] = on->specs->crew1;
        crew[1] = on->specs->crew2;
        crew[2] = on->specs->crew3;
        rigg[0] = on->specs->rig1;
        rigg[1] = on->specs->rig2;
        rigg[2] = on->specs->rig3;
        rigg[3] = on->specs->rig4;
        if (shot == L_GRAPE)
                Chit = chits = hittable;
        else {
                tp = &(rig ? RigTable : HullTable)[hittable][roll-1];
                Chit = chits = tp->C;
                Rhit = rhits = tp->R;
                Hhit = hhits = tp->H;
                Ghit = ghits = tp->G;
                if (on->file->FS)
                        rhits *= 2;
                if (shot == L_CHAIN) {
                        Ghit = ghits = 0;
                        Hhit = hhits = 0;
                }
        }
        if (on->file->captured != 0) {
                pc -= (chits + 1) / 2;
                chits /= 2;
        }
        for (n = 0; n < 3; n++)
                if (chits > crew[n]) {
                        chits -= crew[n];
                        crew[n] = 0;
                } else {
                        crew[n] -= chits;
                        chits = 0;
                }
        for (n = 0; n < 3; n++)
                if (rhits > rigg[n]){
                        rhits -= rigg[n];
                        rigg[n] = 0;
                } else {
                        rigg[n] -= rhits;
                        rhits = 0;
                }
        if (rigg[3] != -1 && rhits > rigg[3]) {
                rhits -= rigg[3];
                rigg[3] = 0;
        } else if (rigg[3] != -1) {
                rigg[3] -= rhits;
        }
        if (rig && !rigg[2] && (!rigg[3] || rigg[3] == -1))
                makemsg(on, "dismasted!");
        if (portside(from, on, 0)) {
                guns = on->specs->gunR;
                car = on->specs->carR;
        } else {
                guns = on->specs->gunL;
                car = on->specs->carL;
        }
        if (ghits > car) {
                ghits -= car;
                car = 0;
        } else {
                car -= ghits;
                ghits = 0;
        }
        if (ghits > guns){
                ghits -= guns;
                guns = 0;
        } else {
                guns -= ghits;
                ghits = 0;
        }
        hull -= ghits;
        if (Ghit)
                Write(portside(from, on, 0) ? W_GUNR : W_GUNL,
                        on, guns, car, 0, 0);
        hull -= hhits;
        hull = hull < 0 ? 0 : hull;
        if (on->file->captured != 0 && Chit)
                Write(W_PCREW, on, pc, 0, 0, 0);
        if (Hhit)
                Write(W_HULL, on, hull, 0, 0, 0);
        if (Chit)
                Write(W_CREW, on, crew[0], crew[1], crew[2], 0);
        if (Rhit)
                Write(W_RIGG, on, rigg[0], rigg[1], rigg[2], rigg[3]);
        switch (shot) {
        case L_ROUND:
                message = "firing round shot on $$";
                break;
        case L_GRAPE:
                message = "firing grape shot on $$";
                break;
        case L_CHAIN:
                message = "firing chain shot on $$";
                break;
        case L_DOUBLE:
                message = "firing double shot on $$";
                break;
        case L_EXPLODE:
                message = "exploding shot on $$";
                break;
        default:
                errx(1, "Unknown shot type %d", shot);
        }
        makesignal(from, "%s", on, message);
        if (roll == 6 && rig) {
                switch(Rhit) {
                case 0:
                        message = "fore topsail sheets parted";
                        break;
                case 1:
                        message = "mizzen shrouds parted";
                        break;
                case 2:
                        message = "main topsail yard shot away";
                        break;
                case 4:
                        message = "fore topmast and foremast shrouds shot away";
                        break;
                case 5:
                        message = "mizzen mast and yard shot through";
                        break;
                case 6:
                        message = "foremast and spritsail yard shattered";
                        break;
                case 7:
                        message = "main topmast and mizzen mast shattered";
                        break;
                default:
                        errx(1, "Bad Rhit = %d", Rhit);
                }
                makemsg(on, "%s", message);
        } else if (roll == 6) {
                switch (Hhit) {
                case 0:
                        message = "anchor cables severed";
                        break;
                case 1:
                        message = "two anchor stocks shot away";
                        break;
                case 2:
                        message = "quarterdeck bulwarks damaged";
                        break;
                case 3:
                        message = "three gun ports shot away";
                        break;
                case 4:
                        message = "four guns dismounted";
                        break;
                case 5:
                        message = "rudder cables shot through";
                        Write(W_TA, on, 0, 0, 0, 0);
                        break;
                case 6:
                        message = "shot holes below the water line";
                        break;
                default:
                        errx(1, "Bad Hhit = %d", Hhit);
                }
                makemsg(on, "%s", message);
        }
        /*
        if (Chit > 1 && on->file->readyL&R_INITIAL && on->file->readyR&R_INITIAL) {
                on->specs->qual--;
                if (on->specs->qual <= 0) {
                        makemsg(on, "crew mutinying!");
                        on->specs->qual = 5;
                        Write(W_CAPTURED, on, on->file->index, 0, 0, 0);
                } else 
                        makemsg(on, "crew demoralized");
                Write(W_QUAL, on, on->specs->qual, 0, 0, 0);
        }
        */
        if (!hull)
                strike(on, from);
}

void
Cleansnag(struct ship *from, struct ship *to, int all, int flag)
{
        if (flag & 1) {
                Write(W_UNGRAP, from, to->file->index, all, 0, 0);
                Write(W_UNGRAP, to, from->file->index, all, 0, 0);
        }
        if (flag & 2) {
                Write(W_UNFOUL, from, to->file->index, all, 0, 0);
                Write(W_UNFOUL, to, from->file->index, all, 0, 0);
        }
        if (!snagged2(from, to)) {
                if (!snagged(from)) {
                        unboard(from, from, 1);         /* defense */
                        unboard(from, from, 0);         /* defense */
                } else
                        unboard(from, to, 0);           /* offense */
                if (!snagged(to)) {
                        unboard(to, to, 1);             /* defense */
                        unboard(to, to, 0);             /* defense */
                } else
                        unboard(to, from, 0);           /* offense */
        }
}

static void
strike(struct ship *ship, struct ship *from)
{
        int points;

        if (ship->file->struck)
                return;
        Write(W_STRUCK, ship, 1, 0, 0, 0);
        points = ship->specs->pts + from->file->points;
        Write(W_POINTS, from, points, 0, 0, 0);
        unboard(ship, ship, 0);         /* all offense */
        unboard(ship, ship, 1);         /* all defense */
        switch (die()) {
        case 3:
        case 4:         /* ship may sink */
                Write(W_SINK, ship, 1, 0, 0, 0);
                break;
        case 5:
        case 6:         /* ship may explode */
                Write(W_EXPLODE, ship, 1, 0, 0, 0);
                break;
        }
        Writestr(W_SIGNAL, ship, "striking her colours!");
}