1198 lines
31 KiB
C
1198 lines
31 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ---
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*
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* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
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* related information and legal notices. It is expected that any future
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* projects/authors will amend these files as needed.
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*
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* ---
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*
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* aircombat.c: Deal with air to air combat
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*
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* Known contributors to this file:
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* Dave Pare, 1986
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* Thomas Ruschak, 1992
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* Steve McClure, 1996
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*/
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#include <string.h>
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#include "misc.h"
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#include "player.h"
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#include "var.h"
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#include "news.h"
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#include "land.h"
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#include "sect.h"
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#include "nuke.h"
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#include "plane.h"
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#include "ship.h"
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#include "nat.h"
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#include "file.h"
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#include "xy.h"
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#include "nsc.h"
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#include "path.h"
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#include "prototypes.h"
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#include "optlist.h"
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extern int update_pending;
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#ifndef MIN
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#define MIN(x,y) ((x) < (y) ? (x) : (y))
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#endif
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#ifndef MAX
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#define MAX(x,y) ((x) < (y) ? (y) : (x))
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#endif
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static void getilist(struct emp_qelem *list, natid own,
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struct emp_qelem *a, struct emp_qelem *b,
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struct emp_qelem *c, struct emp_qelem *d);
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static void ac_dog(register struct plist *ap, register struct plist *dp);
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#define DOG_MAX 15
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#define FLAK_MAX 15
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/* -7 -6 -5 -4 -3 -2 -1 0 */
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float flaktable[16] = { 0.20, 0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50,
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0.50, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85,
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};
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void
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ac_encounter(struct emp_qelem *bomb_list, struct emp_qelem *esc_list,
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coord x, coord y, s_char *path, int mission_flags,
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int no_air_defense, struct emp_qelem *obomb,
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struct emp_qelem *oesc)
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{
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int val, non_missiles;
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int rel;
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int dir;
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int nats[MAXNOC];
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int lnats[MAXNOC];
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int gotilist[MAXNOC];
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int unfriendly[MAXNOC];
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int overfly[MAXNOC];
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struct emp_qelem ilist[MAXNOC], *qp;
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s_char mypath[1024];
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int myp;
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int civ, mil;
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natid plane_owner;
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struct sctstr sect;
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struct shpstr ship;
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struct lndstr land;
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struct nstr_item ni;
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natid cn;
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struct natstr *over, *mynatp;
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struct plist *plp;
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int evaded;
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struct shiplook head;
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struct shiplook *s, *s2;
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int changed = 0;
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int intx, inty; /* Last sector planes intercepted over */
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int intown = 0; /* Last owner to intercept */
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/* We want to only intercept once per sector per owner. So, if we overfly
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a sector, and then overfly some land units or ships, we don't want to
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potentially intercept 3 times. */
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memset(&head, 0, sizeof(struct shiplook));
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head.uid = -1;
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plp = (struct plist *)bomb_list->q_forw;
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plane_owner = plp->plane.pln_own;
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strncpy(mypath, path, sizeof(mypath));
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myp = 0;
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memset(overfly, 0, sizeof(overfly));
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memset(gotilist, 0, sizeof(gotilist));
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memset(unfriendly, 0, sizeof(unfriendly));
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for (cn = 1; cn < MAXNOC; cn++) {
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if ((mynatp = getnatp(cn)) == 0)
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continue;
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rel = getrel(mynatp, plane_owner);
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if (rel > HOSTILE)
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continue;
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if (plane_owner == cn)
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continue;
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unfriendly[cn]++;
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}
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if (mission_flags & PM_R) {
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if (mission_flags & P_S) {
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PR(plane_owner, "\nSPY Plane report\n");
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PRdate(plane_owner);
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sathead();
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} else if (mission_flags & P_A) {
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PR(plane_owner, "\nAnti-Sub Patrol report\n");
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} else {
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PR(plane_owner, "\nReconnaissance report\n");
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PRdate(plane_owner);
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}
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}
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pln_removedupes(bomb_list, esc_list);
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while ((dir = mypath[myp++]) && !QEMPTY(bomb_list)) {
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if ((val = chkdir(dir, DIR_STOP, DIR_LAST)) == 0)
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break;
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/* XXX using xnorm is probably bad */
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x = xnorm(x + diroff[val][0]);
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y = ynorm(y + diroff[val][1]);
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getsect(x, y, §);
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over = getnatp(sect.sct_own);
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if (opt_HIDDEN) {
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setcont(plane_owner, sect.sct_own, FOUND_FLY);
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}
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if (mission_flags & PM_R) {
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if (sect.sct_type == SCT_WATER) {
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PR(plane_owner, "flying over %s at %s\n",
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dchr[sect.sct_type].d_name, xyas(x, y, plane_owner));
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if (mission_flags & PM_S)
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plane_sweep(bomb_list, x, y);
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if (mission_flags & P_A) {
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plane_sona(bomb_list, x, y, &head);
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}
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changed += map_set(plane_owner,
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sect.sct_x, sect.sct_y,
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dchr[sect.sct_type].d_mnem, 0);
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} else if (mission_flags & P_S) {
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satdisp(§, (mission_flags & P_I) ? 10 : 50, 1);
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} else {
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/* This is borrowed from lookout */
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if (sect.sct_own == plane_owner)
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PR(plane_owner, "Your ");
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else
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PR(plane_owner,
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"%s (#%d) ", cname(sect.sct_own), sect.sct_own);
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PR(plane_owner, dchr[sect.sct_type].d_name);
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changed += map_set(plane_owner,
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sect.sct_x, sect.sct_y,
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dchr[sect.sct_type].d_mnem, 0);
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PR(plane_owner, " %d%% efficient ",
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(sect.sct_own == plane_owner) ?
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sect.sct_effic : roundintby((int)sect.sct_effic, 25));
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civ = getvar(V_CIVIL, (s_char *)§, EF_SECTOR);
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mil = getvar(V_MILIT, (s_char *)§, EF_SECTOR);
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if (civ)
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PR(plane_owner, "with %s%d civ ",
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(sect.sct_own == plane_owner) ?
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"" : "approx ",
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(sect.sct_own == plane_owner) ?
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civ : roundintby(civ, 25));
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if (mil)
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PR(plane_owner, "with %s%d mil ",
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(sect.sct_own == plane_owner) ?
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"" : "approx ",
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(sect.sct_own == plane_owner) ?
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mil : roundintby(mil, 25));
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PR(plane_owner, "@ %s\n", xyas(x, y, plane_owner));
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}
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} else {
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PR(plane_owner, "flying over %s at %s\n",
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dchr[sect.sct_type].d_name, xyas(x, y, plane_owner));
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changed += map_set(plane_owner, sect.sct_x,
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sect.sct_y, dchr[sect.sct_type].d_mnem, 0);
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}
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if ((rel = getrel(over, plane_owner)) == ALLIED)
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continue;
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evaded = do_evade(bomb_list, esc_list);
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if (sect.sct_own != 0 && sect.sct_own != plane_owner && (!evaded)) {
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/* We only show planes overhead if they didn't
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* evade radar */
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overfly[sect.sct_own]++;
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PR(sect.sct_own, "%s planes spotted over %s\n",
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cname(plane_owner), xyas(x, y, sect.sct_own));
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}
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if (!evaded) {
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/* Fire flak */
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if (unfriendly[sect.sct_own])
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ac_doflak(bomb_list, §);
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/* If bombers left, fire flak from units and ships */
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if (!QEMPTY(bomb_list))
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ac_landflak(bomb_list, x, y);
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if (!QEMPTY(bomb_list))
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ac_shipflak(bomb_list, x, y);
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}
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/* mission planes aborted due to flak -- don't send escorts */
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if (QEMPTY(bomb_list))
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break;
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if ((!no_air_defense) && (!evaded))
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air_defense(x, y, plane_owner, bomb_list, esc_list);
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if (sect.sct_own == 0 || sect.sct_own == plane_owner)
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continue;
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if (evaded)
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continue;
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non_missiles = 0;
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for (qp = bomb_list->q_forw; qp != bomb_list; qp = qp->q_forw) {
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struct plist *ip = (struct plist *)qp;
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if (!(plchr[(int)ip->plane.pln_type].pl_flags & P_M))
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non_missiles = 1;
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}
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if (!non_missiles)
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continue;
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if (unfriendly[sect.sct_own] && !gotilist[sect.sct_own]) {
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getilist(&ilist[sect.sct_own], sect.sct_own,
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bomb_list, esc_list, obomb, oesc);
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gotilist[sect.sct_own]++;
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}
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if (rel > HOSTILE)
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continue;
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ac_intercept(bomb_list, esc_list, &ilist[sect.sct_own],
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sect.sct_own, x, y);
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intx = x;
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inty = y;
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intown = sect.sct_own;
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}
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/* Let's report all of the overflights even if aborted */
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for (cn = 1; cn < MAXNOC; cn++) {
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if (plane_owner == cn)
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continue;
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if (overfly[cn] > 0)
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nreport(plane_owner, N_OVFLY_SECT, cn, overfly[cn]);
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}
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/* If the map changed, update it */
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if (changed)
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if (!update_pending && plane_owner == player->cnum)
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writemap(player->cnum);
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/* Now, if the bomber and escort lists are empty, we are done */
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if (QEMPTY(bomb_list) && QEMPTY(esc_list)) {
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if (mission_flags & P_A) {
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s = head.next;
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while (s != (struct shiplook *)0) {
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s2 = s;
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s = s->next;
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free(s2);
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}
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}
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return;
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}
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/* Something made it through */
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/* Go figure out if there are ships in this sector, and who's they are */
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memset(nats, 0, sizeof(nats));
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snxtitem_xy(&ni, EF_SHIP, x, y);
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while (nxtitem(&ni, (s_char *)&ship)) {
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if (mchr[(int)ship.shp_type].m_flags & M_SUB)
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continue;
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nats[ship.shp_own]++;
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}
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/* Go figure out if there are units in this sector, and who's they are */
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memset(lnats, 0, sizeof(lnats));
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snxtitem_xy(&ni, EF_LAND, x, y);
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while (nxtitem(&ni, (s_char *)&land)) {
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lnats[land.lnd_own]++;
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}
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/* Now, let's make life a little rougher. */
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for (cn = 1; cn < MAXNOC && !QEMPTY(bomb_list); cn++) {
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if (plane_owner == cn)
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continue;
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intown = -1;
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/* Are there ships owned by this country? */
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if (nats[cn] != 0) {
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/* Yes. */
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if (cn != 0)
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PR(cn, "%s planes spotted over ships in %s\n",
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cname(plane_owner), xyas(x, y, cn));
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if (unfriendly[cn]) {
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/* They are unfriendly too */
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if (!gotilist[cn]) {
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getilist(&ilist[cn], cn, bomb_list, esc_list, obomb,
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oesc);
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gotilist[cn]++;
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}
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PR(plane_owner, "Flying over %s ships in %s\n", cname(cn),
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xyas(x, y, plane_owner));
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/* This makes going for ships in harbors tough */
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if (!evaded) {
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/* We already fired flak up above. Now we intercept again if we haven't already */
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/* Flag that we intercepted */
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intown = 1;
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/* And now intercept again */
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ac_intercept(bomb_list, esc_list, &ilist[cn], cn, x,
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y);
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}
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}
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}
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/* Are there units owned by this country? */
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if (lnats[cn] != 0) {
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/* Yes. */
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if (cn != 0)
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PR(cn, "%s planes spotted over land units in %s\n",
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cname(plane_owner), xyas(x, y, cn));
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if (unfriendly[cn]) {
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/* They are unfriendly too */
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if (!gotilist[cn]) {
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getilist(&ilist[cn], cn, bomb_list, esc_list, obomb,
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oesc);
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gotilist[cn]++;
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}
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PR(plane_owner, "Flying over %s land units in %s\n",
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cname(cn), xyas(x, y, plane_owner));
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if (!evaded) {
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if (intown == -1) {
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/* We haven't intercepted yet, so intercept */
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ac_intercept(bomb_list, esc_list, &ilist[cn], cn,
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x, y);
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}
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}
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}
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}
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}
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if ((mission_flags & P_A) && (head.uid != -1)) {
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s = head.next;
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while (s != (struct shiplook *)0) {
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s2 = s;
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s = s->next;
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free(s2);
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}
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}
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}
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static int
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count_non_missiles(struct emp_qelem *list)
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{
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struct emp_qelem *qp;
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struct plist *plp;
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int att_count = 0;
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/* don't intercept missiles */
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for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
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plp = (struct plist *)qp;
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if (!(plp->pcp->pl_flags & P_M))
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att_count++;
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}
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return att_count;
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}
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void
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sam_intercept(struct emp_qelem *att_list, struct emp_qelem *def_list,
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natid def_own, natid plane_owner, coord x, coord y,
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int delete_missiles)
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{
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struct emp_qelem *aqp;
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struct emp_qelem *anext;
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struct emp_qelem *dqp;
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struct emp_qelem *dnext;
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struct plist *aplp;
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struct plist *dplp;
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int first = 1;
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for (aqp = att_list->q_forw,
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dqp = def_list->q_forw;
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aqp != att_list && dqp != def_list; aqp = anext) {
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anext = aqp->q_forw;
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aplp = (struct plist *)aqp;
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if (aplp->pcp->pl_flags & P_M)
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continue;
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if (aplp->pcp->pl_cost < 1000)
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continue;
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for (; dqp != def_list; dqp = dnext) {
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dnext = dqp->q_forw;
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dplp = (struct plist *)dqp;
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if (!(dplp->pcp->pl_flags & P_M))
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continue;
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if (dplp->plane.pln_range <
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mapdist(x, y, dplp->plane.pln_x, dplp->plane.pln_y)) {
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emp_remque(dqp);
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free((s_char *)dqp);
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continue;
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}
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if (mission_pln_equip(dplp, 0, P_F, 0) < 0) {
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emp_remque(dqp);
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free((s_char *)dqp);
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continue;
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}
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if (first) {
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first = 0;
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PR(plane_owner, "%s launches SAMs!\n", cname(def_own));
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PR(def_own, "Launching SAMs at %s planes!\n",
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cname(plane_owner));
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ac_combat_headers(plane_owner, def_own);
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}
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ac_dog(aplp, dplp);
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dqp = dnext;
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break;
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}
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}
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if (!first) {
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PR(plane_owner, "\n");
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PR(def_own, "\n");
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}
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if (delete_missiles) {
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for (; dqp != def_list; dqp = dnext) {
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dnext = dqp->q_forw;
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dplp = (struct plist *)dqp;
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if (!(dplp->pcp->pl_flags & P_M))
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continue;
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emp_remque(dqp);
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free((s_char *)dqp);
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continue;
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}
|
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}
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}
|
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|
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void
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ac_intercept(struct emp_qelem *bomb_list, struct emp_qelem *esc_list,
|
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struct emp_qelem *def_list, natid def_own, coord x, coord y)
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{
|
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register struct plnstr *pp;
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struct plist *plp;
|
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int icount;
|
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struct emp_qelem *next;
|
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struct emp_qelem *qp;
|
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struct emp_qelem int_list;
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int att_count;
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natid plane_owner;
|
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int dist;
|
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|
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plp = (struct plist *)bomb_list->q_forw;
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|
plane_owner = plp->plane.pln_own;
|
|
|
|
icount = 0;
|
|
|
|
sam_intercept(bomb_list, def_list, def_own, plane_owner, x, y, 0);
|
|
sam_intercept(esc_list, def_list, def_own, plane_owner, x, y, 1);
|
|
if (!(att_count = count_non_missiles(bomb_list) +
|
|
count_non_missiles(esc_list)))
|
|
return;
|
|
|
|
emp_initque(&int_list);
|
|
for (qp = def_list->q_forw; qp != def_list; qp = next) {
|
|
next = qp->q_forw;
|
|
plp = (struct plist *)qp;
|
|
pp = &plp->plane;
|
|
/* SAMs interdict separately */
|
|
if (plp->pcp->pl_flags & P_M)
|
|
continue;
|
|
dist = mapdist(x, y, pp->pln_x, pp->pln_y) * 2;
|
|
if (pp->pln_range < dist)
|
|
continue;
|
|
if (mission_pln_equip(plp, 0, P_F, 0) < 0) {
|
|
emp_remque(qp);
|
|
free((s_char *)qp);
|
|
continue;
|
|
}
|
|
/* got one; delete from def_list, add to int_list */
|
|
emp_remque(qp);
|
|
emp_insque(qp, &int_list);
|
|
pp->pln_mobil -= pln_mobcost(dist, pp, P_F);
|
|
putplane(pp->pln_uid, pp);
|
|
icount++;
|
|
if (icount > att_count)
|
|
break;
|
|
}
|
|
if (icount == 0)
|
|
return;
|
|
PR(plane_owner, "%d %s fighter%s rising to intercept!\n", icount,
|
|
cname(def_own), icount == 1 ? " is" : "s are");
|
|
PR(def_own, "%d fighter%s intercepting %s planes!\n", icount,
|
|
icount == 1 ? " is" : "s are", cname(plane_owner));
|
|
ac_combat_headers(plane_owner, def_own);
|
|
ac_airtoair(esc_list, &int_list, def_own);
|
|
ac_airtoair(bomb_list, &int_list, def_own);
|
|
PR(plane_owner, "\n");
|
|
PR(def_own, "\n");
|
|
}
|
|
|
|
void
|
|
ac_combat_headers(natid plane_owner, natid def_own)
|
|
{
|
|
PR(plane_owner,
|
|
" %-10.10s %-10.10s strength int odds damage results\n",
|
|
cname(plane_owner), cname(def_own));
|
|
PR(def_own,
|
|
" %-10.10s %-10.10s strength int odds damage results\n",
|
|
cname(def_own), cname(plane_owner));
|
|
}
|
|
|
|
/*
|
|
* air-to-air combat.
|
|
*/
|
|
void
|
|
ac_airtoair(struct emp_qelem *att_list, struct emp_qelem *int_list,
|
|
natid def_own)
|
|
{
|
|
register struct plist *attacker;
|
|
register struct plist *interceptor;
|
|
struct emp_qelem *att;
|
|
struct emp_qelem *in;
|
|
int nplanes;
|
|
int more_att;
|
|
int more_int;
|
|
struct emp_qelem *att_next;
|
|
struct emp_qelem *in_next;
|
|
natid att_own;
|
|
|
|
att = att_list->q_forw;
|
|
in = int_list->q_forw;
|
|
more_att = 1;
|
|
more_int = 1;
|
|
if (QEMPTY(att_list) || QEMPTY(int_list)) {
|
|
more_att = 0;
|
|
more_int = 0;
|
|
}
|
|
while (more_att || more_int) {
|
|
in_next = in->q_forw;
|
|
att_next = att->q_forw;
|
|
attacker = (struct plist *)att;
|
|
|
|
/* skip missiles. If only missiles left, we're done */
|
|
if (plchr[(int)attacker->plane.pln_type].pl_flags & P_M) {
|
|
att = att_next;
|
|
if (att == att_list) {
|
|
more_att = 0;
|
|
if (QEMPTY(att_list))
|
|
more_int = 0;
|
|
else
|
|
att = att->q_forw;
|
|
}
|
|
if (all_missiles(att_list))
|
|
more_att = 0;
|
|
continue;
|
|
}
|
|
interceptor = (struct plist *)in;
|
|
att_own = attacker->plane.pln_own;
|
|
def_own = interceptor->plane.pln_own;
|
|
nplanes = attacker->plane.pln_effic;
|
|
if (nplanes > interceptor->plane.pln_effic)
|
|
nplanes = interceptor->plane.pln_effic;
|
|
ac_dog(attacker, interceptor);
|
|
in = in_next;
|
|
att = att_next;
|
|
if (att == att_list) {
|
|
more_att = 0;
|
|
if (QEMPTY(att_list))
|
|
more_int = 0;
|
|
else
|
|
att = att->q_forw;
|
|
}
|
|
if (in == int_list) {
|
|
more_int = 0;
|
|
if (QEMPTY(int_list))
|
|
more_att = 0;
|
|
else
|
|
in = in->q_forw;
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
all_missiles(struct emp_qelem *att_list)
|
|
{
|
|
struct emp_qelem *qp;
|
|
struct plist *p;
|
|
|
|
qp = att_list->q_forw;
|
|
while (qp != att_list) {
|
|
p = (struct plist *)qp;
|
|
if (!(plchr[(int)p->plane.pln_type].pl_flags & P_M))
|
|
return 0;
|
|
|
|
qp = qp->q_forw;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
ac_dog(register struct plist *ap, register struct plist *dp)
|
|
{
|
|
int att, def;
|
|
double odds;
|
|
int intensity;
|
|
natid att_own, def_own;
|
|
int adam, ddam;
|
|
s_char mesg[1024];
|
|
s_char temp[14];
|
|
|
|
att_own = ap->plane.pln_own;
|
|
def_own = dp->plane.pln_own;
|
|
|
|
PR(att_own, " %3.3s #%-4d %3.3s #%-4d",
|
|
ap->pcp->pl_name,
|
|
ap->plane.pln_uid, dp->pcp->pl_name, dp->plane.pln_uid);
|
|
if (def_own)
|
|
PR(def_own, " %3.3s #%-4d %3.3s #%-4d",
|
|
dp->pcp->pl_name,
|
|
dp->plane.pln_uid, ap->pcp->pl_name, ap->plane.pln_uid);
|
|
if (ap->plane.pln_att == 0) {
|
|
att = ap->plane.pln_def * ap->plane.pln_effic / 100;
|
|
att = MAX(att, ap->pcp->pl_def / 2);
|
|
} else {
|
|
att = ap->plane.pln_att * ap->plane.pln_effic / 100;
|
|
att = MAX(att, ap->pcp->pl_att / 2);
|
|
}
|
|
|
|
def = dp->plane.pln_def * dp->plane.pln_effic / 100;
|
|
def = MAX(def, dp->pcp->pl_def / 2);
|
|
|
|
if ((ap->pcp->pl_flags & P_F) && ap->bombs != 0)
|
|
att -= 2;
|
|
if ((dp->pcp->pl_flags & P_F) && dp->bombs != 0)
|
|
def -= 2;
|
|
att += ((float)ap->pcp->pl_stealth / 25.0);
|
|
def += ((float)dp->pcp->pl_stealth / 25.0);
|
|
if (att < 1) {
|
|
def += 1 - att;
|
|
att = 1;
|
|
}
|
|
if (def < 1) {
|
|
att += 1 - def;
|
|
def = 1;
|
|
}
|
|
odds = ((double)att / ((double)def + (double)att));
|
|
if (odds <= 0.05)
|
|
odds = 0.05;
|
|
intensity = roll(20) + roll(20) + roll(20) + roll(20) + 1;
|
|
|
|
PR(att_own, " %3d/%-3d %3d %3.2f ", att, def, intensity, odds);
|
|
PR(def_own, " %3d/%-3d %3d %3.2f ", def, att, intensity, odds);
|
|
|
|
adam = 0;
|
|
ddam = 0;
|
|
while ((intensity--) > 0) {
|
|
|
|
if (chance(odds)) {
|
|
ddam += 1;
|
|
if ((dp->plane.pln_effic - ddam) < PLANE_MINEFF)
|
|
intensity = 0;
|
|
} else {
|
|
adam += 1;
|
|
if ((ap->plane.pln_effic - adam) < PLANE_MINEFF)
|
|
intensity = 0;
|
|
}
|
|
}
|
|
|
|
if (dp->pcp->pl_flags & P_M)
|
|
ddam = 100;
|
|
|
|
PR(att_own, "%3d/%-3d", adam, ddam);
|
|
PR(def_own, "%3d/%-3d", ddam, adam);
|
|
ac_planedamage(ap, dp->plane.pln_own, adam, def_own, 1, 0, mesg);
|
|
strncpy(temp, mesg, 14);
|
|
ac_planedamage(dp, ap->plane.pln_own, ddam, att_own, 1, 0, mesg);
|
|
PR(att_own, "%-13.13s %-13.13s\n", temp, mesg);
|
|
PR(def_own, "%-13.13s %-13.13s\n", mesg, temp);
|
|
}
|
|
|
|
/*
|
|
* zap plane associated with plp.
|
|
* Damaging country is "from", damage is "dam".
|
|
* def_own is the country on the other side of the conflict from the plane
|
|
* owner. The only time def_own != from is when the interceptor is getting
|
|
* damaged.
|
|
*
|
|
* NOTE: This routine removes the appropriate plane element from the
|
|
* queue if it gets destroyed. That means that the caller must assume
|
|
* that the current queue pointer is invalid on return from the ac_planedamage
|
|
* call. (this has caused bugs in the past)
|
|
*/
|
|
void
|
|
ac_planedamage(struct plist *plp, natid from, int dam, natid other,
|
|
int checkabort, int show, s_char *mesg)
|
|
{
|
|
register struct plnstr *pp;
|
|
int disp;
|
|
s_char dmess[255];
|
|
int eff;
|
|
struct shpstr ship;
|
|
struct lndstr land;
|
|
/* s_char *sprintf(); already in misc.h [JFW] */
|
|
natid plane_owner;
|
|
|
|
disp = 0;
|
|
pp = &plp->plane;
|
|
plane_owner = pp->pln_own;
|
|
eff = pp->pln_effic;
|
|
sprintf(dmess, " no damage");
|
|
if (dam <= 0) {
|
|
strcpy(mesg, dmess);
|
|
return;
|
|
}
|
|
memset(dmess, 0, sizeof(dmess));
|
|
eff -= dam;
|
|
if (eff < 0)
|
|
eff = 0;
|
|
if (eff < PLANE_MINEFF) {
|
|
sprintf(dmess, " shot down");
|
|
disp = 1;
|
|
} else if (eff < 80 && chance((100 - eff) / 100.0) && checkabort) {
|
|
sprintf(dmess, " aborted @%2d%%", eff);
|
|
disp = 2;
|
|
} else if (show == 0) {
|
|
sprintf(dmess, " cleared");
|
|
}
|
|
|
|
if ((plp->pcp->pl_flags & P_M) == 0) {
|
|
if (show) {
|
|
PR(plane_owner, " %s %s takes %d%s.\n",
|
|
cname(pp->pln_own), prplane(pp), dam, dmess);
|
|
if (other)
|
|
PR(other, " %s %s takes %d%s.\n",
|
|
cname(pp->pln_own), prplane(pp), dam, dmess);
|
|
}
|
|
}
|
|
if (show && checkabort == 1) {
|
|
PR(plane_owner, "\n");
|
|
if (other)
|
|
PR(other, "\n");
|
|
}
|
|
|
|
pp->pln_effic = eff;
|
|
pp->pln_mobil -= min(32 + pp->pln_mobil, dam / 2);
|
|
if (disp == 1) {
|
|
if (from != 0 && (plp->pcp->pl_flags & P_M) == 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);
|
|
}
|
|
makelost(EF_PLANE, pp->pln_own, pp->pln_uid, pp->pln_x, pp->pln_y);
|
|
pp->pln_own = 0;
|
|
putplane(pp->pln_uid, pp);
|
|
emp_remque(&plp->queue);
|
|
free((s_char *)plp);
|
|
} else if (disp == 2) {
|
|
putplane(pp->pln_uid, pp);
|
|
emp_remque(&plp->queue);
|
|
free((s_char *)plp);
|
|
} else
|
|
putplane(pp->pln_uid, pp);
|
|
strcpy(mesg, dmess);
|
|
}
|
|
|
|
void
|
|
ac_doflak(struct emp_qelem *list, struct sctstr *from)
|
|
{
|
|
int shell, add;
|
|
int gun;
|
|
natid plane_owner;
|
|
struct plist *plp;
|
|
|
|
plp = (struct plist *)list->q_forw;
|
|
plane_owner = plp->plane.pln_own;
|
|
|
|
gun = getvar(V_GUN, (s_char *)from, EF_SECTOR);
|
|
shell = getvar(V_SHELL, (s_char *)from, EF_SECTOR);
|
|
add = 0;
|
|
if (shell < (gun / 2))
|
|
add = supply_commod(from->sct_own, from->sct_x, from->sct_y,
|
|
I_SHELL, ldround(((double)gun / 2.0),
|
|
1) - shell);
|
|
shell += add;
|
|
if (gun == 0 || shell == 0)
|
|
return;
|
|
if (gun > shell * 2)
|
|
gun = shell * 2;
|
|
if (gun > 14)
|
|
gun = 14;
|
|
|
|
putvar(V_SHELL, shell, (s_char *)from, EF_SECTOR);
|
|
putsect(from);
|
|
gun = 2.0 * tfact(from->sct_own, (double)gun);
|
|
if (gun > 0) {
|
|
PR(plane_owner, "firing %d flak guns in %s...\n",
|
|
gun, xyas(from->sct_x, from->sct_y, plane_owner));
|
|
if (from->sct_own != 0)
|
|
PR(from->sct_own, "firing %d flak guns in %s...\n",
|
|
gun, xyas(from->sct_x, from->sct_y, from->sct_own));
|
|
ac_fireflak(list, from->sct_own, 0, gun);
|
|
}
|
|
}
|
|
|
|
void
|
|
ac_shipflak(struct emp_qelem *list, coord x, coord y)
|
|
{
|
|
struct nstr_item ni;
|
|
struct shpstr ship;
|
|
struct mchrstr *mcp;
|
|
int firing;
|
|
int guns;
|
|
int gun;
|
|
int shell;
|
|
int rel;
|
|
struct plist *plp;
|
|
natid plane_owner;
|
|
natid from;
|
|
int nats[MAXNOC];
|
|
|
|
plp = (struct plist *)list->q_forw;
|
|
plane_owner = plp->plane.pln_own;
|
|
|
|
memset(nats, 0, sizeof(nats));
|
|
guns = 0;
|
|
snxtitem_xy(&ni, EF_SHIP, x, y);
|
|
while (!QEMPTY(list) && nxtitem(&ni, (s_char *)&ship)) {
|
|
if (ship.shp_own == 0 || ship.shp_own == plane_owner)
|
|
continue;
|
|
if (guns >= 14)
|
|
break;
|
|
mcp = &mchr[(int)ship.shp_type];
|
|
if (mcp->m_flags & M_SUB)
|
|
continue;
|
|
rel = getrel(getnatp(ship.shp_own), plane_owner);
|
|
if (rel > HOSTILE)
|
|
continue;
|
|
shell = gun = 0;
|
|
gun = min(getvar(V_GUN, (s_char *)&ship, EF_SHIP), ship.shp_glim);
|
|
if (gun) {
|
|
shell = getvar(V_SHELL, (s_char *)&ship, EF_SHIP);
|
|
if (shell <= 0)
|
|
shell = supply_commod(ship.shp_own, ship.shp_x,
|
|
ship.shp_y, I_SHELL, 1);
|
|
}
|
|
if (gun == 0 || shell == 0)
|
|
continue;
|
|
firing = (int)(techfact(ship.shp_tech, (double)gun) * 2.0);
|
|
guns += firing;
|
|
|
|
if (!nats[ship.shp_own]) {
|
|
/* First time here, print the message */
|
|
PR(ship.shp_own, "%s planes spotted over ships in %s\n",
|
|
cname(plane_owner), xyas(x, y, ship.shp_own));
|
|
PR(plane_owner, "Flying over %s ships in %s\n",
|
|
cname(ship.shp_own), xyas(x, y, plane_owner));
|
|
nats[ship.shp_own] = 1;
|
|
}
|
|
PR(ship.shp_own, "firing %d flak guns from %s...\n",
|
|
firing, prship(&ship));
|
|
putvar(V_SHELL, shell, (s_char *)&ship, EF_SHIP);
|
|
putship(ship.shp_uid, &ship);
|
|
from = ship.shp_own;
|
|
}
|
|
if (guns > 0) {
|
|
if (guns > 14)
|
|
guns = 14;
|
|
guns = 2.0 * tfact(from, (double)guns);
|
|
PR(plane_owner, "Flak! Ships firing %d flak guns...\n", guns);
|
|
ac_fireflak(list, from, 0, guns);
|
|
}
|
|
}
|
|
|
|
void
|
|
ac_landflak(struct emp_qelem *list, coord x, coord y)
|
|
{
|
|
struct nstr_item ni;
|
|
struct lndstr land;
|
|
struct lchrstr *lcp;
|
|
int firing;
|
|
int guns;
|
|
int rel;
|
|
natid from;
|
|
struct plist *plp;
|
|
natid plane_owner;
|
|
int nats[MAXNOC];
|
|
|
|
plp = (struct plist *)list->q_forw;
|
|
plane_owner = plp->plane.pln_own;
|
|
|
|
memset(nats, 0, sizeof(nats));
|
|
guns = 0;
|
|
snxtitem_xy(&ni, EF_LAND, x, y);
|
|
while (!QEMPTY(list) && nxtitem(&ni, (s_char *)&land)) {
|
|
if (land.lnd_own == 0 || land.lnd_own == plane_owner)
|
|
continue;
|
|
if (guns >= 14)
|
|
break;
|
|
lcp = &lchr[(int)land.lnd_type];
|
|
|
|
if ((lcp->l_flags & L_FLAK) == 0)
|
|
continue;
|
|
|
|
if (land.lnd_aaf == 0)
|
|
continue;
|
|
|
|
rel = getrel(getnatp(land.lnd_own), plane_owner);
|
|
if (rel > HOSTILE)
|
|
continue;
|
|
firing =
|
|
(int)(techfact(land.lnd_tech, (double)land.lnd_aaf) * 3.0);
|
|
guns += firing;
|
|
|
|
if (!nats[land.lnd_own]) {
|
|
/* First time here, print the message */
|
|
PR(land.lnd_own, "%s planes spotted over land units in %s\n",
|
|
cname(plane_owner), xyas(x, y, land.lnd_own));
|
|
PR(plane_owner, "Flying over %s land units in %s\n",
|
|
cname(land.lnd_own), xyas(x, y, plane_owner));
|
|
nats[land.lnd_own] = 1;
|
|
}
|
|
PR(land.lnd_own, "firing flak guns from unit %s (aa rating %d)\n",
|
|
prland(&land), land.lnd_aaf);
|
|
|
|
from = land.lnd_own; /* We always use the last owner as the from */
|
|
}
|
|
if (guns > 0) {
|
|
if (guns > 14)
|
|
guns = 14;
|
|
guns = 2.0 * tfact(from, (double)guns);
|
|
PR(plane_owner, "Flak! Land units firing %d flak guns...\n",
|
|
guns);
|
|
ac_fireflak(list, from, 0, guns);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Called from shipflak, landflak, and doflak.
|
|
*/
|
|
void
|
|
ac_fireflak(struct emp_qelem *list, natid from, natid other, int guns)
|
|
{
|
|
register struct plnstr *pp;
|
|
struct plist *plp;
|
|
int n;
|
|
float mult;
|
|
int diff;
|
|
struct emp_qelem *qp;
|
|
struct emp_qelem *next;
|
|
s_char msg[255];
|
|
|
|
plp = (struct plist *)list->q_forw;
|
|
|
|
for (qp = list->q_forw; qp != list; qp = next) {
|
|
/*
|
|
* fighters don't get shot at by flak
|
|
* non-tactical bombers are harder to hit with flak.
|
|
* ('Cause they're not dive-bombing?)
|
|
*/
|
|
next = qp->q_forw;
|
|
plp = (struct plist *)qp;
|
|
pp = &plp->plane;
|
|
diff = guns - pp->pln_def;
|
|
if ((plp->pcp->pl_flags & P_T) == 0)
|
|
diff--;
|
|
if (plp->pcp->pl_flags & P_X)
|
|
diff -= 2;
|
|
if (plp->pcp->pl_flags & P_H)
|
|
diff -= 1;
|
|
if (diff > 8)
|
|
mult = flaktable[FLAK_MAX] * 1.33;
|
|
else if (diff < -7)
|
|
mult = flaktable[0] * 0.66;
|
|
else {
|
|
diff += 7;
|
|
mult = flaktable[diff];
|
|
}
|
|
mult *= flakscale;
|
|
n = (int)((roll(8) + 2) * mult);
|
|
if (n > 100)
|
|
n = 100;
|
|
ac_planedamage(plp, from, n, other, 2, 1, msg);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* See if this plane is flying in this list
|
|
*/
|
|
int
|
|
ac_isflying(struct plnstr *plane, struct emp_qelem *list)
|
|
{
|
|
struct emp_qelem *qp;
|
|
struct emp_qelem *next;
|
|
struct plnstr *pp;
|
|
struct plist *plp;
|
|
|
|
if (!list)
|
|
return 0;
|
|
for (qp = list->q_forw; qp != list; qp = next) {
|
|
next = qp->q_forw;
|
|
plp = (struct plist *)qp;
|
|
pp = &plp->plane;
|
|
if (plane->pln_uid == pp->pln_uid)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Get a list of planes available for interception duties.
|
|
*/
|
|
static void
|
|
getilist(struct emp_qelem *list, natid own, struct emp_qelem *a,
|
|
struct emp_qelem *b, struct emp_qelem *c, struct emp_qelem *d)
|
|
{
|
|
register struct plchrstr *pcp;
|
|
struct plnstr plane;
|
|
struct shpstr ship;
|
|
struct lndstr land;
|
|
struct sctstr sect;
|
|
struct nstr_item ni;
|
|
int type;
|
|
s_char *ptr;
|
|
struct plist *ip;
|
|
|
|
emp_initque(list);
|
|
snxtitem_all(&ni, EF_PLANE);
|
|
while (nxtitem(&ni, (s_char *)&plane)) {
|
|
if (plane.pln_own != own)
|
|
continue;
|
|
pcp = &plchr[(int)plane.pln_type];
|
|
if ((pcp->pl_flags & P_F) == 0)
|
|
continue;
|
|
if (plane.pln_mission != 0)
|
|
continue;
|
|
if (plane.pln_mobil <= 0)
|
|
continue;
|
|
if (plane.pln_effic < 40)
|
|
continue;
|
|
if (plane.pln_ship >= 0) {
|
|
if (!can_fly(plane.pln_uid))
|
|
continue;
|
|
getship(plane.pln_ship, &ship);
|
|
ptr = (s_char *)&ship;
|
|
type = EF_SHIP;
|
|
} else if (plane.pln_land >= 0) {
|
|
if (!can_fly(plane.pln_uid))
|
|
continue;
|
|
getland(plane.pln_land, &land);
|
|
ptr = (s_char *)&land;
|
|
type = EF_LAND;
|
|
} else {
|
|
getsect(plane.pln_x, plane.pln_y, §);
|
|
ptr = (s_char *)§
|
|
type = EF_SECTOR;
|
|
#if 0
|
|
if (sect.sct_effic < 60 && (pcp->pl_flags & P_V) == 0)
|
|
continue;
|
|
#else
|
|
if ((sect.sct_effic < 60 || sect.sct_type != SCT_AIRPT)
|
|
&& (pcp->pl_flags & P_V) == 0)
|
|
continue;
|
|
#endif
|
|
}
|
|
if (((float)getvar(V_PETROL, ptr, type)) <
|
|
(((float)pcp->pl_fuel) / 2.0))
|
|
continue;
|
|
/* Finally, is it in the list of planes already in
|
|
flight? */
|
|
if (ac_isflying(&plane, a))
|
|
continue;
|
|
if (ac_isflying(&plane, b))
|
|
continue;
|
|
if (ac_isflying(&plane, c))
|
|
continue;
|
|
if (ac_isflying(&plane, d))
|
|
continue;
|
|
/* got one! */
|
|
ip = (struct plist *)malloc(sizeof(*ip));
|
|
ip->state = P_OK;
|
|
ip->bombs = 0;
|
|
ip->misc = 0;
|
|
ip->pcp = &plchr[(int)plane.pln_type];
|
|
ip->plane = plane;
|
|
emp_insque(&ip->queue, list);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
int
|
|
can_fly(int p)
|
|
{ /* Can this plane fly from the ship or land unit it is on? */
|
|
struct plnstr plane;
|
|
struct shpstr ship;
|
|
struct lndstr land;
|
|
struct plchrstr *pcp;
|
|
struct mchrstr *scp;
|
|
struct lchrstr *lcp;
|
|
|
|
getplane(p, &plane);
|
|
pcp = &plchr[(int)plane.pln_type];
|
|
|
|
if (plane.pln_ship >= 0) {
|
|
if (!(pcp->pl_flags & P_L) && !(pcp->pl_flags & P_M)
|
|
&& !(pcp->pl_flags & P_K)
|
|
&& !(pcp->pl_flags & P_E)
|
|
)
|
|
return 0;
|
|
|
|
getship(plane.pln_ship, &ship);
|
|
scp = &mchr[(int)ship.shp_type];
|
|
|
|
if ((pcp->pl_flags & P_L) && (scp->m_flags & M_FLY)) {
|
|
return 1;
|
|
}
|
|
|
|
if ((pcp->pl_flags & P_M) && (scp->m_flags & M_MSL)) {
|
|
return 1;
|
|
}
|
|
|
|
if ((pcp->pl_flags & P_K) && (scp->m_flags & M_CHOPPER)) {
|
|
return 1;
|
|
}
|
|
|
|
if ((pcp->pl_flags & P_E) && (scp->m_flags & M_XLIGHT)) {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (plane.pln_land >= 0) {
|
|
if (!(pcp->pl_flags & P_E))
|
|
return 0;
|
|
|
|
getland(plane.pln_land, &land);
|
|
lcp = &lchr[(int)land.lnd_type];
|
|
|
|
if ((pcp->pl_flags & P_E) && (lcp->l_flags & L_XLIGHT)) {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
do_evade(struct emp_qelem *bomb_list, struct emp_qelem *esc_list)
|
|
{
|
|
struct emp_qelem *qp;
|
|
double evade;
|
|
struct plist *plp;
|
|
|
|
evade = 100.0;
|
|
for (qp = bomb_list->q_forw; qp != bomb_list; qp = qp->q_forw) {
|
|
plp = (struct plist *)qp;
|
|
if (evade > ((float)plp->pcp->pl_stealth / 100.0))
|
|
evade = (plp->pcp->pl_stealth / 100.0);
|
|
}
|
|
for (qp = esc_list->q_forw; qp != esc_list; qp = qp->q_forw) {
|
|
plp = (struct plist *)qp;
|
|
if (evade > plp->pcp->pl_stealth / 100.0)
|
|
evade = (plp->pcp->pl_stealth / 100.0);
|
|
}
|
|
|
|
if (chance(evade))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|