/*
* Empire - A multi-player, client/server Internet based war game.
- * Copyright (C) 1986-2014, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ * Copyright (C) 1986-2015, Dave Pare, Jeff Bailey, Thomas Ruschak,
* Ken Stevens, Steve McClure, Markus Armbruster
*
* Empire is free software: you can redistribute it and/or modify
* Known contributors to this file:
* Ken Stevens, 1995
* Steve McClure, 1998-2000
- * Markus Armbruster, 2004-2014
+ * Markus Armbruster, 2004-2015
*/
#include <config.h>
#include "unit.h"
#include "xy.h"
+static void lnd_mar_put_one(struct ulist *);
static int lnd_check_one_mines(struct ulist *, int);
-static void lnd_stays(natid, char *, struct ulist *);
static int lnd_hit_mine(struct lndstr *);
static int has_helpful_engineer(coord, coord, natid);
}
}
+int
+lnd_may_mar(struct lndstr *lp, struct lndstr *ldr, char *suffix)
+{
+ struct sctstr sect;
+ int mobtype;
+
+ if (!lp->lnd_own || !getsect(lp->lnd_x, lp->lnd_y, §)) {
+ CANT_REACH();
+ return 0;
+ }
+
+ if (opt_MARKET && ontradingblock(EF_LAND, lp)) {
+ mpr(lp->lnd_own, "%s is on the trading block%s\n",
+ prland(lp), suffix);
+ return 0;
+ }
+
+ if (lp->lnd_ship >= 0) {
+ mpr(lp->lnd_own, "%s is on a ship%s\n", prland(lp), suffix);
+ return 0;
+ }
+ if (lp->lnd_land >= 0) {
+ mpr(lp->lnd_own, "%s is on a unit%s\n", prland(lp), suffix);
+ return 0;
+ }
+
+ if (!(lchr[lp->lnd_type].l_flags & L_SPY) &&
+ !(lchr[lp->lnd_type].l_flags & L_TRAIN) &&
+ lp->lnd_item[I_MILIT] == 0) {
+ mpr(lp->lnd_own, "%s has no mil on it to guide it%s\n",
+ prland(lp), suffix);
+ return 0;
+ }
+
+ switch (lnd_check_mar(lp, §)) {
+ case LND_STUCK_NOT:
+ break;
+ case LND_STUCK_NO_RAIL:
+ mpr(lp->lnd_own, "%s is stuck off the rail system%s\n",
+ prland(lp), suffix);
+ return 0;
+ default:
+ CANT_REACH();
+ /* fall through */
+ case LND_STUCK_IMPASSABLE:
+ mpr(lp->lnd_own, "%s is stuck%s\n", prland(lp), suffix);
+ return 0;
+ }
+
+ if (relations_with(sect.sct_own, lp->lnd_own) != ALLIED &&
+ !(lchr[lp->lnd_type].l_flags & L_SPY) &&
+ sect.sct_own) {
+ mpr(lp->lnd_own, "%s has been kidnapped by %s%s\n",
+ prland(lp), cname(sect.sct_own), suffix);
+ return 0;
+ }
+
+ if (ldr && (lp->lnd_x != ldr->lnd_x || lp->lnd_y != ldr->lnd_y)) {
+ mpr(lp->lnd_own, "%s is not with the leader%s\n",
+ prland(lp), suffix);
+ return 0;
+ }
+
+ /*
+ * The marching code gets confused when trains and non-trains
+ * march together. Disallow for now.
+ */
+ mobtype = lnd_mobtype(lp);
+ if (!ldr || mobtype == lnd_mobtype(ldr))
+ ;
+ else if (mobtype == MOB_RAIL) {
+ mpr(lp->lnd_own,
+ "%s is a train and can't march with the leader%s\n",
+ prland(lp), suffix);
+ return 0;
+ } else {
+ mpr(lp->lnd_own, "%s can't rail-march with the leading train%s\n",
+ prland(lp), suffix);
+ return 0;
+ }
+
+ return 1;
+}
+
void
lnd_sel(struct nstr_item *ni, struct emp_qelem *list)
{
- struct lndstr land;
- int this_mot;
- int mobtype = MOB_MOVE; /* indeterminate */
+ struct lndstr land, *ldr = NULL;
+ struct ulist *llp;
emp_initque(list);
while (nxtitem(ni, &land)) {
*/
if (!land.lnd_own || land.lnd_own != player->cnum)
continue;
- if (opt_MARKET) {
- if (ontradingblock(EF_LAND, &land)) {
- pr("unit #%d inelligible - it's for sale.\n",
- land.lnd_uid);
- continue;
- }
- }
- /*
- * The marching code gets confused when trains and non-trains
- * march together. Disallow for now.
- */
- this_mot = lnd_mobtype(&land);
- if (this_mot != mobtype) {
- if (mobtype == MOB_MOVE)
- mobtype = this_mot;
- else if (mobtype == MOB_MARCH) {
- pr("%s is a train and can't march with the leader.\n",
- prland(&land));
- continue;
- } else {
- pr("%s can't rail-march with the leading train.\n",
- prland(&land));
- continue;
- }
- }
+ if (!lnd_may_mar(&land, ldr, ""))
+ continue;
land.lnd_mission = 0;
land.lnd_rflags = 0;
- land.lnd_harden = 0;
memset(land.lnd_rpath, 0, sizeof(land.lnd_rpath));
putland(land.lnd_uid, &land);
- lnd_insque(&land, list);
+ llp = lnd_insque(&land, list);
+ if (!ldr)
+ ldr = &llp->unit.land;
}
}
return mlp;
}
-/* This function assumes that the list was created by lnd_sel */
void
-lnd_mar(struct emp_qelem *list, double *minmobp, double *maxmobp,
- natid actor)
+lnd_mar_stay_behind(struct emp_qelem *list, natid actor)
{
struct emp_qelem *qp;
struct emp_qelem *next;
struct ulist *llp;
struct lndstr *lp, *ldr = NULL;
- struct sctstr sect;
- char mess[128];
+ char and_stays[32];
- *minmobp = 9876.0;
- *maxmobp = -9876.0;
for (qp = list->q_back; qp != list; qp = next) {
next = qp->q_back;
llp = (struct ulist *)qp;
lp = &llp->unit.land;
getland(lp->lnd_uid, lp);
+
if (lp->lnd_own != actor) {
mpr(actor, "%s was disbanded at %s\n",
prland(lp), xyas(lp->lnd_x, lp->lnd_y, actor));
free(llp);
continue;
}
- if (lp->lnd_ship >= 0) {
- lnd_stays(actor, "is on a ship", llp);
- continue;
- }
- if (lp->lnd_land >= 0) {
- lnd_stays(actor, "is on a unit", llp);
- continue;
- }
- if (!getsect(lp->lnd_x, lp->lnd_y, §)) {
- lnd_stays(actor, "was sucked into the sky by a strange looking spaceland", llp); /* heh -KHS */
- continue;
- }
- if (!(lchr[lp->lnd_type].l_flags & L_SPY) &&
- !(lchr[lp->lnd_type].l_flags & L_TRAIN) &&
- lp->lnd_item[I_MILIT] == 0) {
- lnd_stays(actor, "has no mil on it to guide it", llp);
- continue;
- }
- switch (lnd_check_mar(lp, §)) {
- case LND_STUCK_NOT:
- break;
- case LND_STUCK_NO_RAIL:
- lnd_stays(actor, "is stuck off the rail system", llp);
- continue;
- default:
- CANT_REACH();
- /* fall through */
- case LND_STUCK_IMPASSABLE:
- lnd_stays(actor, "is stuck", llp);
- continue;
- }
- if (relations_with(sect.sct_own, actor) != ALLIED &&
- !(lchr[lp->lnd_type].l_flags & L_SPY) &&
- sect.sct_own) {
- sprintf(mess, "has been kidnapped by %s", cname(sect.sct_own));
- lnd_stays(actor, mess, llp);
+
+ snprintf(and_stays, sizeof(and_stays), " & stays in %s",
+ xyas(lp->lnd_x, lp->lnd_y, actor));
+ if (!lnd_may_mar(lp, ldr, and_stays)) {
+ lnd_mar_put_one(llp);
continue;
}
+
if (!ldr)
ldr = lp;
- else if (lp->lnd_x != ldr->lnd_x || lp->lnd_y != ldr->lnd_y) {
- lnd_stays(actor, "is not with the leader", llp);
- continue;
- }
if (lp->lnd_mobil + 1 < (int)llp->mobil) {
llp->mobil = lp->lnd_mobil;
}
- if (llp->mobil < *minmobp)
- *minmobp = llp->mobil;
- if (llp->mobil > *maxmobp)
- *maxmobp = llp->mobil;
}
}
lnd_put_one(llp);
}
-static void
+void
lnd_mar_put(struct emp_qelem *list, natid actor)
{
struct emp_qelem *qp, *next;
struct ulist *llp;
struct sctstr sect;
int mines, m, max, sshells, lshells;
- int stopping = 0;
+ int stopping = 0, first = 1;
llp = lnd_find_capable(land_list, L_ENGINEER);
if (!llp) {
sshells = sect.sct_item[I_SHELL];
for (m = 0; mines > 0 && m < max * 2; m++) {
if (chance(0.5 * lchr[llp->unit.land.lnd_type].l_att)) {
+ if (first) {
+ mpr(actor, "Approaching minefield at %s...\n",
+ xyas(sect.sct_x, sect.sct_y, actor));
+ first = 0;
+ }
mpr(actor, "Sweep...\n");
mines--;
if (lshells < max)
sect.sct_item[I_SHELL] = sshells;
putland(llp->unit.land.lnd_uid, &llp->unit.land);
putsect(§);
- if (lnd_check_one_mines(llp, 1)) {
- stopping = 1;
- emp_remque(qp);
- free(qp);
- }
+ stopping |= lnd_check_one_mines(llp, 1);
}
return stopping;
}
-static int
-contains_engineer(struct emp_qelem *list)
-{
- struct emp_qelem *qp;
- struct emp_qelem *next;
- struct ulist *llp;
-
- for (qp = list->q_back; qp != list; qp = next) {
- next = qp->q_back;
- llp = (struct ulist *)qp;
- if (lchr[llp->unit.land.lnd_type].l_flags & L_ENGINEER)
- return 1;
- }
- return 0;
-}
-
static int
lnd_check_one_mines(struct ulist *llp, int with_eng)
{
sect.sct_mines--;
putsect(§);
putland(llp->unit.land.lnd_uid, &llp->unit.land);
- if (!llp->unit.land.lnd_own)
- return 1;
+ if (!llp->unit.land.lnd_own) {
+ emp_remque(&llp->queue);
+ free(llp);
+ }
+ return 1;
}
return 0;
}
{
struct emp_qelem *qp;
struct emp_qelem *next;
- struct ulist *llp;
int stopping = 0;
- int with_eng = contains_engineer(land_list);
+ int with_eng = !!lnd_find_capable(land_list, L_ENGINEER);
for (qp = land_list->q_back; qp != land_list; qp = next) {
next = qp->q_back;
- llp = (struct ulist *)qp;
- if (lnd_check_one_mines(llp, with_eng)) {
- stopping = 1;
- emp_remque(qp);
- free(qp);
- }
+ stopping |= lnd_check_one_mines((struct ulist *)qp, with_eng);
}
return stopping;
}
-static void
-lnd_stays(natid actor, char *str, struct ulist *llp)
-{
- mpr(actor, "%s %s & stays in %s\n",
- prland(&llp->unit.land), str,
- xyas(llp->unit.land.lnd_x, llp->unit.land.lnd_y, actor));
- lnd_mar_put_one(llp);
-}
-
/* Return whether and why SP would be stuck in SECTP. */
enum lnd_stuck
lnd_check_mar(struct lndstr *lp, struct sctstr *sectp)
}
int
-lnd_mar_one_sector(struct emp_qelem *list, int dir, natid actor)
+lnd_mar_dir(struct emp_qelem *list, int dir, natid actor)
{
struct sctstr sect, osect;
struct emp_qelem *qp;
coord newx;
coord newy;
int move;
- int stopping = 0;
- int visible;
- char dp[80];
int rel;
int oldown;
if (CANT_HAPPEN(QEMPTY(list)))
return 1;
- if (dir <= DIR_STOP || dir >= DIR_VIEW) {
+ if (dir <= DIR_STOP || dir > DIR_LAST) {
+ CANT_HAPPEN(dir != DIR_STOP);
lnd_mar_put(list, actor);
return 1;
}
llp = (struct ulist *)qp;
if (rel != ALLIED
&& !(lchr[llp->unit.land.lnd_type].l_flags & L_SPY)) {
- sprintf(dp, "can't go to %s", xyas(newx, newy, actor));
- lnd_stays(actor, dp, llp);
+ mpr(actor, "%s can't go to %s & stays in %s\n",
+ prland(&llp->unit.land), xyas(newx, newy, actor),
+ xyas(llp->unit.land.lnd_x, llp->unit.land.lnd_y, actor));
+ lnd_mar_put_one(llp);
continue;
}
if (llp->mobil <= 0.0) {
- lnd_stays(actor, "is out of mobility", llp);
+ mpr(actor, "%s is out of mobility & stays in %s\n",
+ prland(&llp->unit.land),
+ xyas(llp->unit.land.lnd_x, llp->unit.land.lnd_y, actor));
+ lnd_mar_put_one(llp);
continue;
}
llp->unit.land.lnd_x = newx;
}
}
}
- if (QEMPTY(list))
- return stopping;
- stopping |= lnd_sweep(list, 0, 1, actor);
+
+ return 0;
+}
+
+int
+lnd_mar_gauntlet(struct emp_qelem *list, int interdict, natid actor)
+{
+ struct ulist *mlp = (struct ulist *)list->q_back;
+ coord newx = mlp->unit.land.lnd_x;
+ coord newy = mlp->unit.land.lnd_y;
+ int stopping, visible;
+ struct emp_qelem *qp, *next;
+ struct ulist *llp;
+
+ stopping = lnd_sweep(list, 0, 1, actor);
if (QEMPTY(list))
return stopping;
stopping |= lnd_check_mines(list);
if (!(lchr[(int)llp->unit.land.lnd_type].l_flags & L_SPY))
visible = 1;
}
- if (visible)
+ if (visible && interdict)
stopping |= lnd_interdict(list, newx, newy, actor);
return stopping;
projects / empserver / blobdiff