src/lib/commands/bomb.c

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/*
 *  Empire - A multi-player, client/server Internet based war game.
 *  Copyright (C) 1986-2007, Dave Pare, Jeff Bailey, Thomas Ruschak,
 *                           Ken Stevens, Steve McClure
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  ---
 *
 *  See files README, COPYING and CREDITS in the root of the source
 *  tree for related information and legal notices.  It is expected
 *  that future projects/authors will amend these files as needed.
 *
 *  ---
 *
 *  bomb.c: Fly bombing missions
 * 
 *  Known contributors to this file:
 *     Dave Pare, 1986
 *     Ken Stevens, 1995
 *     Steve McClure, 1998-2000
 */

#include <config.h>

#include <ctype.h>
#include "commands.h"
#include "damage.h"
#include "item.h"
#include "land.h"
#include "news.h"
#include "optlist.h"
#include "path.h"
#include "plane.h"
#include "retreat.h"
#include "ship.h"

static void pin_bomb(struct emp_qelem *list, struct sctstr *target);
static void strat_bomb(struct emp_qelem *list, struct sctstr *target);
static void comm_bomb(struct emp_qelem *list, struct sctstr *target);
static void eff_bomb(struct emp_qelem *list, struct sctstr *target);
static int pinflak_planedamage(struct plnstr *pp, struct plchrstr *pcp,
                               natid from, int flak);
static void plane_bomb(struct emp_qelem *list, struct sctstr *target);
static void land_bomb(struct emp_qelem *list, struct sctstr *target);
static void ship_bomb(struct emp_qelem *list, struct sctstr *target);

static i_type bombcomm[] = {
    I_CIVIL,
    I_MILIT,
    I_SHELL,
    I_GUN,
    I_PETROL,
    I_IRON,
    I_DUST,
    I_BAR,
    I_FOOD,
    I_OIL,
    I_LCM,
    I_HCM,
    I_UW,
    I_RAD
};
static int nbomb = sizeof(bombcomm) / sizeof(*bombcomm);

int
bomb(void)
{
    char *p;
    int mission_flags;
    coord tx, ty;
    coord ax, ay;
    int ap_to_target;
    struct ichrstr *ip;
    char flightpath[MAX_PATH_LEN];
    struct nstr_item ni_bomb;
    struct nstr_item ni_esc;
    struct sctstr target;
    struct emp_qelem bomb_list;
    struct emp_qelem esc_list;
    int wantflags;
    struct sctstr ap_sect;
    char mission;
    int rel;
    struct natstr *natp;
    char buf[1024];

    wantflags = 0;
    if (!snxtitem(&ni_bomb, EF_PLANE, player->argp[1]))
        return RET_SYN;
    if (!snxtitem(&ni_esc, EF_PLANE,
                  getstarg(player->argp[2], "escort(s)? ", buf)))
        pr("No escorts...\n");
    p = getstarg(player->argp[3], "pinpoint, or strategic? ", buf);
    if (!p)
        return RET_SYN;
    mission = *p;
    if (strchr("ps", mission) == 0)
        return RET_SYN;
    if (!get_assembly_point(player->argp[4], &ap_sect, buf))
        return RET_SYN;
    ax = ap_sect.sct_x;
    ay = ap_sect.sct_y;
    if (getpath(flightpath, player->argp[5], ax, ay, 0, 0, P_FLYING) == 0
        || *flightpath == 0)
        return RET_SYN;
    tx = ax;
    ty = ay;
    (void)pathtoxy(flightpath, &tx, &ty, fcost);
    pr("target sector is %s\n", xyas(tx, ty, player->cnum));
    getsect(tx, ty, &target);
    ip = 0;
    ap_to_target = strlen(flightpath);
    if (flightpath[ap_to_target - 1] == 'h')
        ap_to_target--;
    pr("range to target is %d\n", ap_to_target);
    /*
     * select planes within range
     */
    mission_flags = 0;
    pln_sel(&ni_bomb, &bomb_list, &ap_sect, ap_to_target,
            2, wantflags, P_M | P_O);
    pln_sel(&ni_esc, &esc_list, &ap_sect, ap_to_target,
            2, wantflags | P_F | P_ESC, P_M | P_O);
    /*
     * now arm and equip the bombers, transports, whatever.
     */
    mission_flags |= P_X;       /* stealth (shhh) */
    mission_flags |= P_H;       /* gets turned off if not all choppers */
    mission_flags = pln_arm(&bomb_list, 2 * ap_to_target, mission,
                            ip, 0, mission_flags);
    if (QEMPTY(&bomb_list)) {
        pr("No planes could be equipped for the mission.\n");
        return RET_FAIL;
    }
    mission_flags = pln_arm(&esc_list, 2 * ap_to_target, mission,
                            ip, P_F | P_ESC, mission_flags);
    ac_encounter(&bomb_list, &esc_list, ax, ay, flightpath, mission_flags,
                 0, 0, 0);
    if (QEMPTY(&bomb_list)) {
        pr("No planes got through fighter defenses\n");
    } else if (target.sct_type == SCT_SANCT) {
        pr("You can't bomb that sector!\n");
    } else {
        switch (mission) {
        case 'p':
            pin_bomb(&bomb_list, &target);
            break;
        case 's':
            if (opt_SLOW_WAR) {
                natp = getnatp(player->cnum);
                if (target.sct_own) {
                    rel = getrel(natp, target.sct_own);
                    if ((rel != AT_WAR) && (player->cnum != target.sct_own)
                        && (target.sct_own) &&
                        (target.sct_oldown != player->cnum)) {
                        pr("You're not at war with them!\n");
                        pln_put(&bomb_list);
                        pln_put(&esc_list);
                        return RET_FAIL;
                    }
                }
            }
            nreport(player->cnum, N_SCT_BOMB, target.sct_own, 1);
            strat_bomb(&bomb_list, &target);
            break;
        default:
            pr("Bad mission %c\n", mission);
            break;
        }
    }
    pln_put(&bomb_list);
    pln_put(&esc_list);
    return RET_OK;
}

static void
pin_bomb(struct emp_qelem *list, struct sctstr *target)
{
    struct dchrstr *dcp;
    int nplanes;
    int nships;
    int type;
    int bad;
    char *p;
    struct plist *plp;
    int nsubs;
    int nunits;
    struct natstr *natp;
    int rel;
    char buf[1024];
    int i;

    bad = 0;
    type = target->sct_type;
    dcp = &dchr[type];
    pr("Target sector is a %s constructed %s\n",
       effadv((int)target->sct_effic), dcp->d_name);
    nsubs = 0;
    plp = (struct plist *)list->q_forw;
    if (plp->pcp->pl_flags & P_A) {
        nships = num_shipsatxy(target->sct_x, target->sct_y, 0, 0);
        nsubs = nships - shipsatxy(target->sct_x, target->sct_y, 0, M_SUB);
        if (nsubs > 0)
            pr("Some subs are present in the sector.\n");
    } else {
        nships = shipsatxy(target->sct_x, target->sct_y, 0, M_SUB);
    }
    nplanes = planesatxy(target->sct_x, target->sct_y, 0, 0, list);
    nunits = unitsatxy(target->sct_x, target->sct_y, 0, 0);
  retry:
    p = getstring("Bomb what? (ship, plane, land unit, efficiency, commodities) ",
                  buf);
    if (p == 0 || *p == 0) {
        if (player->aborted)
            return;
        bad++;
        if (bad > 2)
            return;
        goto retry;
    }
    switch (*p) {
    case 'l':
        if (opt_SLOW_WAR) {
            natp = getnatp(player->cnum);
            if (target->sct_own) {
                rel = getrel(natp, target->sct_own);
                if ((rel != AT_WAR) && (player->cnum != target->sct_own)
                    && (target->sct_own) &&
                    (target->sct_oldown != player->cnum)) {
                    pr("You're not at war with them!\n");
                    goto retry;
                }
            }
        }
        if (nunits == 0) {
            pr("no units there\n");
            goto retry;
        }
        land_bomb(list, target);
        break;
    case 'p':
        if (opt_SLOW_WAR) {
            natp = getnatp(player->cnum);
            if (target->sct_own) {
                rel = getrel(natp, target->sct_own);
                if ((rel != AT_WAR) && (player->cnum != target->sct_own)
                    && (target->sct_own) &&
                    (target->sct_oldown != player->cnum)) {
                    pr("You're not at war with them!\n");
                    goto retry;
                }
            }
        }
        if (nplanes == 0) {
            pr("no planes there\n");
            goto retry;
        }
        plane_bomb(list, target);
        break;
    case 's':
        if (nships == 0) {
            if (((struct plist *)list->q_forw)->pcp->pl_flags & P_A) {
                if (nsubs == 0) {
                    pr("no ships there\n");
                    goto retry;
                }
            } else {
                pr("no ships there\n");
                goto retry;
            }
        }
        ship_bomb(list, target);
        break;
    case 'c':
        if (opt_SLOW_WAR) {
            natp = getnatp(player->cnum);
            if (target->sct_own) {
                rel = getrel(natp, target->sct_own);
                if ((rel != AT_WAR) && (player->cnum != target->sct_own)
                    && (target->sct_own) &&
                    (target->sct_oldown != player->cnum)) {
                    pr("You're not at war with them!\n");
                    goto retry;
                }
            }
        }

        for (i = 0; i < nbomb; i++) {
            if (!target->sct_item[bombcomm[i]])
                continue;
            break;
        }
        if (i >= nbomb) {
            pr("No bombable commodities in %s\n",
               xyas(target->sct_x, target->sct_y, player->cnum));
            goto retry;
        }
        comm_bomb(list, target);
        break;
    case 'e':
        if (opt_SLOW_WAR) {
            natp = getnatp(player->cnum);
            if (target->sct_own) {
                rel = getrel(natp, target->sct_own);
                if ((rel != AT_WAR) && (player->cnum != target->sct_own)
                    && (target->sct_own) &&
                    (target->sct_oldown != player->cnum)) {
                    pr("You're not at war with them!\n");
                    goto retry;
                }
            }
        }
        eff_bomb(list, target);
        break;
    case 'q':
        pr("Aborting mission.\n");
        return;
    default:
        pr("Bad target type.\n");
        goto retry;
    }
}

static void
eff_bomb(struct emp_qelem *list, struct sctstr *target)
{
    struct plist *plp;
    struct emp_qelem *qp;
    struct sctstr sect;
    int oldeff, dam = 0;
    int nukedam;

    for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
        plp = (struct plist *)qp;
        if ((plp->pcp->pl_flags & P_C) && (!(plp->pcp->pl_flags & P_T)))
            continue;
        if (plp->bombs || plp->plane.pln_nuketype != -1)
            dam += pln_damage(&plp->plane, target->sct_x, target->sct_y,
                              'p', &nukedam, 1);
    }
    if (dam <= 0)               /* dam == 0 if only nukes were delivered */
        return;
    getsect(target->sct_x, target->sct_y, &sect);
    target = &sect;
    oldeff = target->sct_effic;
    target->sct_effic = effdamage(target->sct_effic, dam);
    target->sct_avail = effdamage(target->sct_avail, dam);
    target->sct_road = effdamage(target->sct_road, dam);
    target->sct_rail = effdamage(target->sct_rail, dam);
    target->sct_defense = effdamage(target->sct_defense, dam);
    pr("did %d%% damage to efficiency in %s\n",
       oldeff - target->sct_effic,
       xyas(target->sct_x, target->sct_y, player->cnum));
    if (target->sct_own)
        wu(0, target->sct_own,
           "%s bombing raid did %d%% damage in %s\n",
           cname(player->cnum), oldeff - target->sct_effic,
           xyas(target->sct_x, target->sct_y, target->sct_own));
    if (target->sct_effic < SCT_MINEFF) {
        if (target->sct_type == SCT_BSPAN)
            knockdown(target, list);
        else if (target->sct_type == SCT_BTOWER) {
            knockdown(target, list);
            bridgefall(target, list);
        }
    }
    putsect(&sect);
    collateral_damage(target->sct_x, target->sct_y, dam, list);
}

static void
comm_bomb(struct emp_qelem *list, struct sctstr *target)
{
    struct plist *plp;
    double b;
    int i;
    int amt, before;
    struct ichrstr *ip;
    struct emp_qelem *qp;
    struct sctstr sect;
    int dam = 0;
    int nukedam;

    for (i = 0; i < nbomb; i++) {
        if (target->sct_item[bombcomm[i]] == 0)
            continue;
        if (opt_SUPER_BARS && bombcomm[i] == I_BAR)
            continue;
        ip = &ichr[bombcomm[i]];
        pr("some %s\n", ip->i_name);
    }
    for (;;) {
        ip = whatitem(NULL, "commodity to bomb? ");
        if (player->aborted)
            return;
        if (!ip)
            continue;

        for (i = 0; i < nbomb; i++) {
            if (opt_SUPER_BARS && bombcomm[i] == I_BAR)
                continue;
            if (&ichr[bombcomm[i]] == ip)
                break;
        }
        if (i == nbomb) {
            pr("You can't bomb %s!\n", ip->i_name);
            for (i = 0; i < nbomb; i++) {
                if (opt_SUPER_BARS && bombcomm[i] == I_BAR)
                    continue;
                pr("%s%s", i == 0 ? "Bombable: " : ", ",
                   ichr[bombcomm[i]].i_name);
            }
            pr("\n");
        } else
            break;
    }
    for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
        plp = (struct plist *)qp;
        if ((plp->pcp->pl_flags & P_C) && (!(plp->pcp->pl_flags & P_T)))
            continue;
        if (plp->bombs || plp->plane.pln_nuketype != -1)
            dam += pln_damage(&plp->plane, target->sct_x, target->sct_y,
                              'p', &nukedam, 1);
    }
    if (dam <= 0)               /* dam == 0 if only nukes were delivered */
        return;
    getsect(target->sct_x, target->sct_y, &sect);
    target = &sect;
    before = target->sct_item[ip->i_uid];
    target->sct_item[ip->i_uid] = amt = commdamage(before, dam, ip->i_uid);
    if (before > 0.0)
        b = 100.0 * (1.0 - (double)amt / (double)before);
    else
        b = 0.0;
    pr("did %.2f%% damage to %s in %s\n",
       b, ip->i_name, xyas(target->sct_x, target->sct_y, player->cnum));
    nreport(player->cnum, N_SCT_BOMB, target->sct_own, 1);
    if (target->sct_own != 0)
        wu(0, target->sct_own,
           "%s precision bombing raid did %.2f%% damage to %s in %s\n",
           cname(player->cnum), b, ip->i_name,
           xyas(target->sct_x, target->sct_y, target->sct_own));
    putsect(&sect);
    collateral_damage(target->sct_x, target->sct_y, dam, list);
}

static void
ship_bomb(struct emp_qelem *list, struct sctstr *target)
{
    struct plist *plp;
    struct mchrstr *mcp;
    int dam;
    char *q;
    int n;
    struct emp_qelem *qp;
    int shipno;
    int ignore;
    struct shpstr ship;
    int nships = 0;
    struct shiplist *head = NULL;
    char buf[1024];
    char prompt[128];
    int hitchance;
    int nukedam;
    int flak;
    int gun;
    int shell;

    for (qp = list->q_forw; qp != list && !player->aborted;
         qp = qp->q_forw) {
        free_shiplist(&head);
        plp = (struct plist *)qp;
        if ((plp->pcp->pl_flags & P_C) && (!(plp->pcp->pl_flags & P_T)))
            continue;
        if (plp->pcp->pl_flags & P_A)
            nships = asw_shipsatxy(target->sct_x, target->sct_y, 0, 0,
                                   &plp->plane, &head);
        else
            nships = shipsatxy(target->sct_x, target->sct_y, 0, M_SUB);
        if (nships == 0) {
            pr("%s could not find any ships!\n", prplane(&plp->plane));
            continue;
        }
        (void)sprintf(prompt, "%s, %d bombs.  Target ('~' to skip)? ",
                      prplane(&plp->plane), plp->bombs);
        ignore = 0;
        shipno = -1;
        while (shipno < 0 && !player->aborted && !ignore) {
            if ((q = getstring(prompt, buf)) == 0 || *q == 0)
                continue;
            if (*q == '~') {
                ignore = 1;
                continue;
            }
            if (*q == '?') {
                if (plp->pcp->pl_flags & P_A)
                    print_shiplist(head);
                else
                    shipsatxy(target->sct_x, target->sct_y, 0, M_SUB);
                continue;
            }
            if (*q == 'd')
                goto next;
            if (!isdigit(*q))
                continue;
            n = atoi(q);
            if (n < 0)
                continue;
            if ((plp->pcp->pl_flags & P_A) && !on_shiplist(n, head))
                continue;
            if (getship(n, &ship) && ship.shp_x == target->sct_x &&
                ship.shp_y == target->sct_y)
                shipno = n;
        }
        if (shipno < 0)
            continue;
        if ((plp->pcp->pl_flags & P_A) && !on_shiplist(shipno, head))
            continue;

        shell = gun = 0;
        gun = MIN(ship.shp_item[I_GUN], ship.shp_glim);
        if (gun > 0) {
            shell = ship.shp_item[I_SHELL];
            if (shell <= 0)
                shell = supply_commod(ship.shp_own,
                                      ship.shp_x, ship.shp_y, I_SHELL, 1);
        }
        mcp = &mchr[(int)ship.shp_type];
        if (gun > 0 && shell > 0 && !(mcp->m_flags & M_SUB)) {
            flak = (int)(techfact(ship.shp_tech, gun) * 2.0);
            ship.shp_item[I_SHELL] = shell;
            putship(ship.shp_uid, &ship);
            PR(ship.shp_own, "Flak! Firing %d guns from ship %s\n",
               flak, prship(&ship));
            if (pinflak_planedamage(&plp->plane, plp->pcp, ship.shp_own, flak))
                continue;
        }

        dam = 0;
        if (plp->plane.pln_nuketype != -1)
            hitchance = 100;
        else {
            hitchance = pln_hitchance(&plp->plane,
                                      shp_hardtarget(&ship), EF_SHIP);
            pr("%d%% hitchance...", hitchance);
        }
        if (roll(100) <= hitchance) {
            /* pinbombing is more accurate than normal bombing */
            dam = 2 * pln_damage(&plp->plane, target->sct_x, target->sct_y,
                                 'p', &nukedam, 1);
        } else {
            pr("splash\n");
            /* Bombs that miss have to land somewhere! */
            dam = pln_damage(&plp->plane, target->sct_x, target->sct_y,
                             'p', &nukedam, 0);
            collateral_damage(target->sct_x, target->sct_y, dam, list);
            dam = 0;
        }
        if (dam <= 0)           /* dam == 0 if only nukes were delivered */
            continue;
        if (mcp->m_flags & M_SUB)
            nreport(player->cnum, N_SUB_BOMB, ship.shp_own, 1);
        else
            nreport(player->cnum, N_SHP_BOMB, ship.shp_own, 1);
        if (ship.shp_own) {
            wu(0, ship.shp_own, "%s bombs did %d damage to %s at %s\n",
               cname(player->cnum), dam,
               prship(&ship),
               xyas(target->sct_x, target->sct_y, ship.shp_own));
        }
        pr("\n");
        check_retreat_and_do_shipdamage(&ship, dam);
        if (ship.shp_rflags & RET_BOMBED)
            if (((ship.shp_rflags & RET_INJURED) == 0) || !dam)
                retreat_ship(&ship, 'b');
        putship(ship.shp_uid, &ship);
        getship(ship.shp_uid, &ship);
        if (!ship.shp_own) {
            pr("%s at %s sunk!\n",
               prship(&ship),
               xyas(target->sct_x, target->sct_y, player->cnum));
        }
        collateral_damage(target->sct_x, target->sct_y, dam / 2, list);
      next:
        ;
    }
    free_shiplist(&head);
}

static void
plane_bomb(struct emp_qelem *list, struct sctstr *target)
{
    int dam;
    char *q;
    int n;
    natid own;
    struct plnstr plane;
    struct emp_qelem *qp;
    int planeno;
    int ignore;
    struct plist *plp;
    char prompt[128];
    char buf[1024];
    int hitchance;
    int nukedam;
    int nplanes;

    for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
        plp = (struct plist *)qp;
        if ((plp->pcp->pl_flags & P_C) && (!(plp->pcp->pl_flags & P_T)))
            continue;
        nplanes = planesatxy(target->sct_x, target->sct_y, 0, 0, list);
        if (nplanes == 0) {
            pr("%s could not find any planes!\n", prplane(&plp->plane));
            continue;
        }
        (void)sprintf(prompt, "%s, %d bombs.  Target ('~' to skip)? ",
                      prplane(&plp->plane), plp->bombs);
        planeno = -1;
        ignore = 0;
        while (planeno < 0 && !player->aborted && !ignore) {
            if ((q = getstring(prompt, buf)) == 0 || *q == 0)
                continue;
            if (*q == '~') {
                ignore = 1;
                continue;
            }
            if (*q == '?') {
                planesatxy(target->sct_x, target->sct_y, 0, 0, list);
                continue;
            }
            if (*q == 'd')
                goto next;
            n = atoi(q);
            if (n < 0)
                continue;
            if (getplane(n, &plane) &&
                plane.pln_x == target->sct_x &&
                plane.pln_y == target->sct_y &&
                ((plane.pln_flags & PLN_LAUNCHED) == 0) &&
                (!ac_isflying(&plane, list)))
                planeno = n;
            else
                pr("Plane #%d not spotted\n", n);
        }
        if (planeno < 0)
            continue;
        dam = 0;
        if (plp->plane.pln_nuketype != -1)
            hitchance = 100;
        else {
            hitchance = pln_hitchance(&plp->plane, 0, EF_PLANE);
            pr("%d%% hitchance...", hitchance);
        }
        if (roll(100) <= hitchance) {
            /* pinbombing is more accurate than normal bombing */
            dam = 2 * pln_damage(&plp->plane, target->sct_x, target->sct_y,
                                 'p', &nukedam, 1);
        } else {
            pr("thud\n");
            /* Bombs that miss have to land somewhere! */
            dam = pln_damage(&plp->plane, target->sct_x, target->sct_y,
                             'p', &nukedam, 0);
            collateral_damage(target->sct_x, target->sct_y, dam, list);
            dam = 0;
        }
        if (dam <= 0)           /* dam == 0 if only nukes were delivered */
            continue;
        if (dam > 100)
            dam = 100;
        own = plane.pln_own;
        if (dam > plane.pln_effic)
            plane.pln_effic = 0;
        else
            plane.pln_effic -= dam;
        plane.pln_mobil = (dam * plane.pln_mobil / 100.0);
        if (own == player->cnum) {
            pr("%s reports %d%% damage\n", prplane(&plane), dam);
        } else {
            if (own != 0)
                wu(0, own,
                   "%s pinpoint bombing raid did %d%% damage to %s\n",
                   cname(player->cnum), dam, prplane(&plane));
        }
        nreport(player->cnum, N_DOWN_PLANE, own, 1);
        if (own != 0)
            wu(0, own, "%s bombs did %d%% damage to %s at %s\n",
               cname(player->cnum), dam, prplane(&plane),
               xyas(target->sct_x, target->sct_y, own));
        putplane(plane.pln_uid, &plane);
        collateral_damage(target->sct_x, target->sct_y, dam, list);
      next:
        ;
    }
}

static void
land_bomb(struct emp_qelem *list, struct sctstr *target)
{
    int dam;
    char *q;
    int n;
    natid own;
    char prompt[128];
    char buf[1024];
    struct lndstr land;
    struct emp_qelem *qp;
    int unitno;
    int ignore, flak, hitchance;
    struct plist *plp;
    int nukedam;
    int nunits;

    for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
        plp = (struct plist *)qp;
        if ((plp->pcp->pl_flags & P_C) && (!(plp->pcp->pl_flags & P_T)))
            continue;
        nunits = unitsatxy(target->sct_x, target->sct_y, 0, 0);
        if (nunits == 0) {
            pr("%s could not find any units!\n", prplane(&plp->plane));
            continue;
        }
        (void)sprintf(prompt, "%s, %d bombs.  Target ('~' to skip)? ",
                      prplane(&plp->plane), plp->bombs);
        unitno = -1;
        ignore = 0;
        while (unitno < 0 && !player->aborted && !ignore) {
            if ((q = getstring(prompt, buf)) == 0 || *q == 0)
                continue;
            if (*q == '~') {
                ignore = 1;
                continue;
            }
            if (*q == '?') {
                unitsatxy(target->sct_x, target->sct_y, 0, 0);
                continue;
            }
            if (*q == 'd')
                goto next;
            n = atoi(q);
            if (n < 0)
                continue;
            if (getland(n, &land) &&
                land.lnd_x == target->sct_x && land.lnd_y == target->sct_y)
                unitno = n;
            else
                pr("Unit #%d not spotted\n", n);
        }
        if (unitno < 0)
            continue;

        flak = (int)(techfact(land.lnd_tech, land.lnd_aaf) * 3.0);
        if (flak) {
            PR(land.lnd_own,
               "Flak! Firing flak guns from unit %s (aa rating %d)\n",
               prland(&land), land.lnd_aaf);
            if (pinflak_planedamage(&plp->plane, plp->pcp, land.lnd_own, flak))
                continue;
        }

        dam = 0;
        if (plp->plane.pln_nuketype != -1)
            hitchance = 100;
        else {
            hitchance = pln_hitchance(&plp->plane,
                                      lnd_hardtarget(&land), EF_LAND);
            pr("%d%% hitchance...", hitchance);
        }
        if (roll(100) <= hitchance) {
            dam = 2 * pln_damage(&plp->plane, target->sct_x, target->sct_y,
                                 'p', &nukedam, 1);
        } else {
            pr("thud\n");
            /* Bombs that miss have to land somewhere! */
            dam = pln_damage(&plp->plane, target->sct_x, target->sct_y,
                             'p', &nukedam, 0);
            collateral_damage(target->sct_x, target->sct_y, dam, list);
            dam = 0;
        }
        if (dam <= 0)           /* dam == 0 if only nukes were delivered */
            continue;
        if (dam > 100)
            dam = 100;
        own = land.lnd_own;
        if (own != 0)
            mpr(own, "%s pinpoint bombing raid did %d damage to %s\n",
                cname(player->cnum), dam, prland(&land));
        check_retreat_and_do_landdamage(&land, dam);

        if (land.lnd_rflags & RET_BOMBED)
            if (((land.lnd_rflags & RET_INJURED) == 0) || !dam)
                retreat_land(&land, 'b');
        nreport(player->cnum, N_UNIT_BOMB, own, 1);
        putland(land.lnd_uid, &land);
        collateral_damage(target->sct_x, target->sct_y, dam, list);
      next:
        ;
    }
}

static void
strat_bomb(struct emp_qelem *list, struct sctstr *target)
{
    struct plist *plp;
    int dam = 0;
    struct emp_qelem *qp;
    struct sctstr sect;
    int nukedam;

    for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
        plp = (struct plist *)qp;
        if ((plp->pcp->pl_flags & P_C) && (!(plp->pcp->pl_flags & P_T)))
            continue;
        if (plp->bombs || plp->plane.pln_nuketype != -1)
            dam += pln_damage(&plp->plane, target->sct_x, target->sct_y,
                              's', &nukedam, 1);
    }
    if (dam <= 0)               /* dam == 0 if only nukes were delivered */
        return;
    getsect(target->sct_x, target->sct_y, &sect);
    target = &sect;
    if (target->sct_own)
        wu(0, target->sct_own, "%s bombing raid did %d damage in %s\n",
           cname(player->cnum), PERCENT_DAMAGE(dam),
           xyas(target->sct_x, target->sct_y, target->sct_own));

    sectdamage(target, dam, list);

    pr("did %d damage in %s\n", PERCENT_DAMAGE(dam),
       xyas(target->sct_x, target->sct_y, player->cnum));
    putsect(&sect);
}

static int
pinflak_planedamage(struct plnstr *pp, struct plchrstr *pcp, natid from,
                    int flak)
{
    int disp;
    char dmess[255];
    int eff;
    struct shpstr ship;
    struct lndstr land;
    natid plane_owner;
    int dam;

    dam = ac_flak_dam(flak, pp->pln_def, pcp->pl_flags);
    disp = 0;
    plane_owner = pp->pln_own;
    eff = pp->pln_effic;
    if (dam <= 0)
        return 0;
    memset(dmess, 0, sizeof(dmess));
    eff -= dam;
    if (eff < 0)
        eff = 0;
    if (eff < PLANE_MINEFF) {
        sprintf(dmess, " -- shot down");
        disp = 1;
    } else if (chance((100 - eff) / 100.0)) {
        sprintf(dmess, " -- aborted with %d%% damage", 100 - eff);
        disp = 2;
    }
    PR(plane_owner, "    Flak! %s %s takes %d%s.\n",
       cname(pp->pln_own), prplane(pp), dam, dmess);

    pp->pln_effic = eff;
    if (disp == 1) {
        if (from != 0)
            nreport(from, N_DOWN_PLANE, pp->pln_own, 1);
        if (pp->pln_ship >= 0) {
            getship(pp->pln_ship, &ship);
            take_plane_off_ship(pp, &ship);
        }
        if (pp->pln_land >= 0) {
            getland(pp->pln_land, &land);
            take_plane_off_land(pp, &land);
        }
    }
    putplane(pp->pln_uid, pp);

    if (disp > 0)
        return 1;
    return 0;
}

---