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empserver/src/lib/commands/laun.c

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/*
* Empire - A multi-player, client/server Internet based war game.
* Copyright (C) 1986-2006, 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.
*
* ---
*
* laun.c: Launch missiles from land or sea
*
* Known contributors to this file:
* Dave Pare, 1986
* Ken Stevens, 1995
* Steve McClure, 1998-2000
*/
#include <config.h>
#include "misc.h"
#include "player.h"
#include "xy.h"
#include "sect.h"
#include "plane.h"
#include "news.h"
#include "mission.h"
#include "ship.h"
#include "nsc.h"
#include "nat.h"
#include "path.h"
#include "file.h"
#include "optlist.h"
#include "damage.h"
#include "commands.h"
static int launch_as(struct plnstr *pp);
static int launch_missile(struct plnstr *pp, int sublaunch);
static int launch_sat(struct plnstr *pp, int sublaunch);
/*
* laun <PLANES>
*/
int
laun(void)
{
struct nstr_item nstr;
struct plnstr plane;
struct shpstr ship;
struct sctstr sect;
int sublaunch;
struct plchrstr *pcp;
int rel, retval, gone;
struct natstr *natp;
if (!snxtitem(&nstr, EF_PLANE, player->argp[1]))
return RET_SYN;
while (nxtitem(&nstr, &plane)) {
if (plane.pln_own != player->cnum)
continue;
pcp = &plchr[(int)plane.pln_type];
if ((pcp->pl_flags & (P_M | P_O)) == 0) {
pr("%s isn't a missile!\n", prplane(&plane));
continue;
}
if (pcp->pl_flags & P_F) {
pr("%s is a surface-to-air missile!\n", prplane(&plane));
continue;
}
if (pcp->pl_flags & P_N) {
pr("%s is an anti-ballistic-missile missile!\n",
prplane(&plane));
continue;
}
if ((plane.pln_flags & PLN_LAUNCHED) && (pcp->pl_flags & P_O)) {
pr("%s already in orbit!\n", prplane(&plane));
continue;
}
if (opt_MARKET) {
if (ontradingblock(EF_PLANE, &plane)) {
pr("plane #%d inelligible - it's for sale.\n",
plane.pln_uid);
continue;
}
}
sublaunch = 0;
if (plane.pln_ship >= 0) {
getship(plane.pln_ship, &ship);
if (!ship.shp_own) {
pr("%s: ship #%d was sunk!\n",
prplane(&plane), ship.shp_uid);
makelost(EF_PLANE, plane.pln_own, plane.pln_uid,
plane.pln_x, plane.pln_y);
plane.pln_own = 0;
putplane(plane.pln_uid, &plane);
continue;
}
natp = getnatp(ship.shp_own);
rel = getrel(natp, player->cnum);
if (ship.shp_own != player->cnum && rel != ALLIED) {
pr("%s: you or an ally do not own ship #%d\n",
prplane(&plane), ship.shp_uid);
makelost(EF_PLANE, plane.pln_own, plane.pln_uid,
plane.pln_x, plane.pln_y);
plane.pln_own = 0;
putplane(plane.pln_uid, &plane);
continue;
}
if (mchr[(int)ship.shp_type].m_flags & M_SUB)
sublaunch = 1;
} else {
sublaunch = 0;
getsect(plane.pln_x, plane.pln_y, &sect);
natp = getnatp(sect.sct_own);
rel = getrel(natp, player->cnum);
if (sect.sct_own && sect.sct_own != player->cnum
&& rel != ALLIED) {
pr("%s: you or an ally do not own sector %s!\n",
prplane(&plane), xyas(plane.pln_x, plane.pln_y,
player->cnum));
continue;
}
}
if (plane.pln_effic < 60) {
pr("%s is damaged (%d%%)\n", prplane(&plane), plane.pln_effic);
continue;
}
pr("%s at %s; range %d, eff %d%%\n", prplane(&plane),
xyas(plane.pln_x, plane.pln_y, player->cnum),
plane.pln_range, plane.pln_effic);
if (!(pcp->pl_flags & P_O)) {
retval = launch_missile(&plane, sublaunch);
gone = 1;
} else if ((pcp->pl_flags & (P_M | P_O)) == (P_M | P_O)) {
retval = launch_as(&plane);
gone = 1;
} else { /* satellites */
retval = launch_sat(&plane, sublaunch);
gone = !(plane.pln_flags & PLN_LAUNCHED);
}
if (retval != RET_OK)
return retval;
if (gone) {
makelost(EF_PLANE, plane.pln_own, plane.pln_uid, plane.pln_x,
plane.pln_y);
plane.pln_own = 0;
putplane(plane.pln_uid, &plane);
}
}
return RET_OK;
}
/*
* Launch anti-sat weapon PP.
* Return RET_OK if launched (even when missile explodes),
* else RET_SYN or RET_FAIL.
*/
static int
launch_as(struct plnstr *pp)
{
coord sx, sy;
s_char *cp, buf[1024];
struct plnstr plane;
struct nstr_item ni;
int goodtarget;
int dam, nukedam;
natid oldown;
if (msl_equip(pp) < 0) {
pr("%s not enough petrol or shells!\n", prplane(pp));
return RET_FAIL;
}
cp = getstarg(player->argp[2], "Target sector? ", buf);
if (!check_plane_ok(pp))
return RET_FAIL;
if (!cp || !*cp)
return RET_SYN;
if (!sarg_xy(cp, &sx, &sy)) {
pr("Bad sector designation!\n");
return RET_SYN;
}
if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
pr("Range too great!\n");
return RET_FAIL;
}
goodtarget = 0;
snxtitem_dist(&ni, EF_PLANE, sx, sy, 0);
while (!goodtarget && nxtitem(&ni, &plane)) {
if (!plane.pln_own)
continue;
if (!(plane.pln_flags & PLN_LAUNCHED))
continue;
goodtarget = 1;
}
if (!goodtarget) {
pr("No satellites there!\n");
return RET_FAIL;
}
if (msl_hit(pp, plane.pln_def, EF_PLANE, N_SAT_KILL, N_SAT_KILL,
prplane(&plane), sx, sy, plane.pln_own)) {
dam = pln_damage(pp, sx, sy, 'p', &nukedam, 1);
oldown = plane.pln_own;
planedamage(&plane, dam);
pr("Hit satellite for %d%% damage!\n", dam);
mpr(oldown, "%s anti-sat did %d%% damage to %s over %s\n",
cname(player->cnum), dam, prplane(&plane),
xyas(plane.pln_x, plane.pln_y, plane.pln_own));
putplane(plane.pln_uid, &plane);
if (!plane.pln_own)
mpr(oldown, "Satellite shot down\n");
}
return RET_OK;
}
/*
* Launch missile PP.
* If SUBLAUNCH, it's sub-launched.
* Return RET_OK if launched (even when missile explodes),
* else RET_SYN or RET_FAIL.
*/
static int
launch_missile(struct plnstr *pp, int sublaunch)
{
struct plchrstr *pcp = plchr + pp->pln_type;
coord sx, sy;
int n, dam;
s_char *cp;
struct mchrstr *mcp;
struct shpstr target_ship;
struct sctstr sect;
int nukedam;
int rel;
struct natstr *natp;
s_char buf[1024];
if (pcp->pl_flags & P_MAR)
cp = getstarg(player->argp[2], "Target ship? ", buf);
else
cp = getstarg(player->argp[2], "Target sector? ", buf);
if (!cp || !*cp)
return RET_SYN;
if (!check_plane_ok(pp))
return RET_FAIL;
if (opt_PINPOINTMISSILE && sarg_type(cp) == NS_LIST) {
if (!(pcp->pl_flags & P_MAR)) {
pr("Missile not designed to attack ships!\n");
return RET_FAIL;
}
n = atoi(cp);
if ((n < 0) || !getship(n, &target_ship) ||
!target_ship.shp_own) {
pr("Bad ship number!\n");
return RET_FAIL;
}
sx = target_ship.shp_x;
sy = target_ship.shp_y;
mcp = &mchr[(int)target_ship.shp_type];
if (mcp->m_flags & M_SUB) {
pr("Bad ship number!\n");
return RET_FAIL;
}
} /* not PINPOINTMISSILE for ships */
else if (!sarg_xy(cp, &sx, &sy)) {
pr("Not a sector!\n");
return RET_FAIL;
} else if (opt_PINPOINTMISSILE) {
if (pcp->pl_flags & P_MAR) {
pr("Missile designed to attack ships!\n");
return RET_FAIL;
}
}
/* end PINPOINTMISSILE */
if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
pr("Range too great; try again!\n");
return RET_FAIL;
}
if (msl_equip(pp) < 0) {
pr("%s not enough shells!\n", prplane(pp));
return RET_FAIL;
}
if (opt_PINPOINTMISSILE == 0 || !(pcp->pl_flags & P_MAR)) {
getsect(sx, sy, &sect);
if (opt_SLOW_WAR) {
natp = getnatp(player->cnum);
rel = getrel(natp, sect.sct_own);
if ((rel != AT_WAR) && (sect.sct_own != player->cnum) &&
(sect.sct_own) && (sect.sct_oldown != player->cnum)) {
pr("You are not at war with the player->owner of the target sector!\n");
pr_beep();
pr("Kaboom!!!\n");
pr("Missile monitoring officer destroys RV before detonation.\n");
return RET_OK;
}
}
if (!msl_hit(pp, SECT_HARDTARGET, EF_SECTOR, N_SCT_MISS,
N_SCT_SMISS, "sector", sx, sy, sect.sct_own)) {
/*
dam = pln_damage(pp, sect.sct_x, sect.sct_y, 's', &nukedam, 0);
collateral_damage(sect.sct_x, sect.sct_y, dam, 0);
*/
return RET_OK;
}
dam = pln_damage(pp, sect.sct_x, sect.sct_y, 's', &nukedam, 1);
if (!nukedam) {
pr("did %d damage in %s\n", PERCENT_DAMAGE(dam),
xyas(sx, sy, player->cnum));
if (sect.sct_own != 0) {
if (sublaunch)
wu(0, sect.sct_own,
"Sub missile attack did %d damage in %s\n",
dam, xyas(sx, sy, sect.sct_own));
else
wu(0, sect.sct_own,
"%s missile attack did %d damage in %s\n",
cname(player->cnum), dam,
xyas(sx, sy, sect.sct_own));
}
sectdamage(&sect, dam, 0);
putsect(&sect);
}
} /* end PINPOINTMISSILE conditional */
else if (opt_PINPOINTMISSILE) { /* else */
if (!msl_hit(pp, shp_hardtarget(&target_ship), EF_SHIP,
N_SHP_MISS, N_SHP_SMISS, prship(&target_ship),
target_ship.shp_x, target_ship.shp_y,
target_ship.shp_own)) {
pr("splash\n");
/*
dam = pln_damage(pp,target_ship.shp_x,target_ship.shp_y,'p',&nukedam, 0);
collateral_damage(target_ship.shp_x, target_ship.shp_y, dam, 0);
*/
return RET_OK;
}
dam =
pln_damage(pp, target_ship.shp_x, target_ship.shp_y, 'p',
&nukedam, 1);
if (!nukedam) {
check_retreat_and_do_shipdamage(&target_ship, dam);
if (target_ship.shp_effic < SHIP_MINEFF)
pr("\t%s sunk!\n", prship(&target_ship));
putship(target_ship.shp_uid, &target_ship);
}
getship(target_ship.shp_uid, &target_ship);
if (!target_ship.shp_own)
pr("%s sunk!\n", prship(&target_ship));
}
/* end PINPOINTMISSILE */
return RET_OK;
}
/*
* Launch a satellite.
* Return RET_OK if launched (even when satellite fails),
* else RET_SYN or RET_FAIL.
*/
static int
launch_sat(struct plnstr *pp, int sublaunch)
{
struct plchrstr *pcp = plchr + pp->pln_type;
coord sx, sy;
int i;
int dist;
int dir;
s_char *cp;
s_char *p;
s_char buf[1024];
pr("\n");
cp = getstarg(player->argp[2], "Target sector? ", buf);
if (!check_plane_ok(pp))
return RET_FAIL;
if (!cp || !*cp)
return RET_SYN;
if (!sarg_xy(cp, &sx, &sy)) {
pr("Bad sector designation!\n");
return RET_SYN;
}
if ((dist = mapdist(pp->pln_x, pp->pln_y, sx, sy)) > pp->pln_range) {
pr("Range too great; try again!\n");
return RET_FAIL;
}
p = getstring("Geostationary orbit? ", buf);
if (p == 0)
return RET_SYN;
if (!check_plane_ok(pp))
return RET_FAIL;
pp->pln_theta = 0;
pp->pln_flags |= PLN_SYNCHRONOUS;
if (*p == 0 || *p == 'n')
pp->pln_flags &= ~(PLN_SYNCHRONOUS);
pr("3... 2... 1... Blastoff!!!\n");
if (chance(0.07 + (100 - pp->pln_effic) / 100.0)) {
pr("KABOOOOM! Range safety officer detonates booster!\n");
makelost(EF_PLANE, pp->pln_own, pp->pln_uid, pp->pln_x, pp->pln_y);
pp->pln_own = 0;
return RET_OK;
}
i = pp->pln_tech + pp->pln_effic;
if (chance(1.0 - (i / (i + 50.0)))) {
dir = (random() % 6) + 1;
sx += diroff[dir][0];
sy += diroff[dir][1];
pr("Your trajectory was a little off.\n");
}
nreport(player->cnum, N_LAUNCH, 0, 1);
pr("%s positioned over %s", prplane(pp), xyas(sx, sy, player->cnum));
if (msl_intercept(sx, sy, pp->pln_own, pcp->pl_def, sublaunch, P_O, 0)) {
return RET_OK;
}
pp->pln_x = sx;
pp->pln_y = sy;
pp->pln_flags |= PLN_LAUNCHED;
pp->pln_mobil = (pp->pln_mobil > dist) ? (pp->pln_mobil - dist) : 0;
putplane(pp->pln_uid, pp);
pr(", will be ready for use in %d time units\n", plane_mob_max - pp->pln_mobil);
return RET_OK;
}
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