/*      $OpenBSD: kill.c,v 1.8 2016/01/07 14:37:51 mestre Exp $ */
/*      $NetBSD: kill.c,v 1.3 1995/04/22 10:59:06 cgd Exp $     */

/*
 * Copyright (c) 1980, 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 <stdio.h>

#include "trek.h"

/*
**  KILL KILL KILL !!!
**
**      This file handles the killing off of almost anything.
*/

/*
**  Handle a Klingon's death
**
**      The Klingon at the sector given by the parameters is killed
**      and removed from the Klingon list.  Notice that it is not
**      removed from the event list; this is done later, when the
**      the event is to be caught.  Also, the time left is recomputed,
**      and the game is won if that was the last klingon.
*/

void
killk(int ix, int iy)
{
        int             i;

        printf("   *** Klingon at %d,%d destroyed ***\n", ix, iy);

        /* remove the scoundrel */
        Now.klings -= 1;
        Sect[ix][iy] = EMPTY;
        Quad[Ship.quadx][Ship.quady].klings -= 1;
        /* %%% IS THIS SAFE???? %%% */
        Quad[Ship.quadx][Ship.quady].scanned -= 100;
        Game.killk += 1;

        /* find the Klingon in the Klingon list */
        for (i = 0; i < Etc.nkling; i++)
                if (ix == Etc.klingon[i].x && iy == Etc.klingon[i].y)
                {
                        /* purge him from the list */
                        Etc.nkling -= 1;
                        for (; i < Etc.nkling; i++)
                                Etc.klingon[i] = Etc.klingon[i + 1];
                        break;
                }

        /* find out if that was the last one */
        if (Now.klings <= 0)
                win();

        /* recompute time left */
        Now.time = Now.resource / Now.klings;
        return;
}


/*
**  handle a starbase's death
*/

void
killb(int qx, int qy)
{
        struct quad     *q;
        struct xy       *b;

        q = &Quad[qx][qy];

        if (q->bases <= 0)
                return;
        if (!damaged(SSRADIO))
        {
                /* then update starchart */
                if (q->scanned < 1000)
                        q->scanned -= 10;
                else
                        if (q->scanned > 1000)
                                q->scanned = -1;
        }
        q->bases = 0;
        Now.bases -= 1;
        for (b = Now.base; ; b++)
                if (qx == b->x && qy == b->y)
                        break;
        *b = Now.base[Now.bases];
        if (qx == Ship.quadx && qy == Ship.quady)
        {
                Sect[Etc.starbase.x][Etc.starbase.y] = EMPTY;
                if (Ship.cond == DOCKED)
                        undock(0);
                printf("Starbase at %d,%d destroyed\n", Etc.starbase.x, Etc.starbase.y);
        }
        else
        {
                if (!damaged(SSRADIO))
                {
                        printf("Uhura: Starfleet command reports that the starbase in\n");
                        printf("   quadrant %d,%d has been destroyed\n", qx, qy);
                }
                else
                        schedule(E_KATSB | E_GHOST, 1e50, qx, qy, 0);
        }
}


/**
 **     kill an inhabited starsystem
 **/

/* 
 * x, y: quad coords if f == 0, else sector coords
 * f != 0 -- this quad;  f < 0 -- Enterprise's fault
 */
void
kills(int x, int y, int f)
{
        struct quad     *q;
        struct event    *e;
        const char      *name;

        if (f)
        {
                /* current quadrant */
                q = &Quad[Ship.quadx][Ship.quady];
                Sect[x][y] = EMPTY;
                name = systemname(q);
                if (name == 0)
                        return;
                printf("Inhabited starsystem %s at %d,%d destroyed\n",
                        name, x, y);
                if (f < 0)
                        Game.killinhab += 1;
        }
        else
        {
                /* different quadrant */
                q = &Quad[x][y];
        }
        if (q->qsystemname & Q_DISTRESSED)
        {
                /* distressed starsystem */
                e = &Event[q->qsystemname & Q_SYSTEM];
                printf("Distress call for %s invalidated\n",
                        Systemname[e->systemname]);
                unschedule(e);
        }
        q->qsystemname = 0;
        q->stars -= 1;
}


/**
 **     "kill" a distress call
 **/

/* 
 * x, y: quadrant coordinates
 * f: set if user is to be informed
 */
void
killd(int x, int y, int f)
{
        struct event    *e;
        int             i;
        struct quad     *q;

        q = &Quad[x][y];
        for (i = 0; i < MAXEVENTS; i++)
        {
                e = &Event[i];
                if (e->x != x || e->y != y)
                        continue;
                switch (e->evcode)
                {
                  case E_KDESB:
                        if (f)
                        {
                                printf("Distress call for starbase in %d,%d nullified\n",
                                        x, y);
                                unschedule(e);
                        }
                        break;

                  case E_ENSLV:
                  case E_REPRO:
                        if (f)
                        {
                                printf("Distress call for %s in quadrant %d,%d nullified\n",
                                        Systemname[e->systemname], x, y);
                                q->qsystemname = e->systemname;
                                unschedule(e);
                        }
                        else
                        {
                                e->evcode |= E_GHOST;
                        }
                }
        }
}