/*
* Empire - A multi-player, client/server Internet based war game.
- * Copyright (C) 1986-2006, Dave Pare, Jeff Bailey, Thomas Ruschak,
- * Ken Stevens, Steve McClure
+ * Copyright (C) 1986-2013, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ * Ken Stevens, Steve McClure, Markus Armbruster
*
- * This program is free software; you can redistribute it and/or modify
+ * Empire 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
+ * the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* ---
*
* ---
*
* radmap.c: Do a radar map given an x,y location, effic, and other
- *
+ *
* Known contributors to this file:
* Dave Pare, 1989
+ * Markus Armbruster, 2004-2010
*/
#include <config.h>
+#include <stdlib.h>
+#include "file.h"
+#include "map.h"
#include "misc.h"
-#include "player.h"
-#include "xy.h"
#include "nat.h"
-#include "sect.h"
-#include "ship.h"
-#include "plane.h"
-#include "file.h"
#include "nsc.h"
-#include "prototypes.h"
#include "optlist.h"
+#include "plane.h"
+#include "player.h"
+#include "prototypes.h"
+#include "sect.h"
+#include "ship.h"
+#include "xy.h"
-static void radmap2(int, int, int, int, int, double, int);
-
-void
-radmap(int cx, int cy, int eff, int range, double seesub)
-{
- radmap2(player->cnum, cx, cy, eff, range, seesub, 1);
-}
-
-void
-radmapnopr(int cx, int cy, int eff, int range, double seesub)
-{
- radmap2(player->cnum, cx, cy, eff, range, seesub, 0);
-}
-
-void
-radmapupd(int own, int cx, int cy, int eff, int range, double seesub)
-{
- radmap2(own, cx, cy, eff, range, seesub, 0);
-}
+static int rad_range(int, double, int);
+static char rad_char(struct sctstr *, int, int, natid);
/* More dynamic world sized buffers. We create 'em once, and then
* never again. No need to keep creating/tearing apart. We may
* want to do this in other places too where it doesn't matter. */
-static s_char **rad;
-static s_char *radbuf;
-static s_char **vis;
-static s_char *visbuf;
-
-static void
-radmap2(int owner,
- int cx, int cy, int eff, int range, double seesub, int pr_flag)
+static char **rad;
+static char *radbuf;
+static signed char **vis;
+static signed char *visbuf;
+
+/*
+ * Draw a radar map for radar at CX,CY.
+ * EFF is the radar's efficiency, TLEV its tech level, SPY its power.
+ * Submarines are detected at fraction SEESUB of the range.
+ */
+void
+radmap(int cx, int cy, int eff, double tlev, int spy, double seesub)
{
- int rng;
+ int visib, rng;
struct sctstr sect;
struct shpstr ship;
struct plnstr plane;
int x, y;
int row;
int n;
+ int range = rad_range(eff, tlev, spy);
int changed = 0;
if (!radbuf)
- radbuf = malloc(WORLD_Y * (WORLD_X + 1));
+ radbuf = malloc(WORLD_Y * MAPWIDTH(1));
if (!visbuf)
- visbuf = malloc(WORLD_Y * (WORLD_X + 1));
+ visbuf = malloc(WORLD_Y * MAPWIDTH(1));
if (!rad) {
- rad = malloc(WORLD_Y * sizeof(s_char *));
+ rad = malloc(WORLD_Y * sizeof(char *));
if (rad && radbuf) {
for (x = 0; x < WORLD_Y; x++)
rad[x] = &radbuf[(WORLD_X + 1) * x];
}
}
if (!vis) {
- vis = malloc(WORLD_Y * sizeof(s_char *));
+ vis = malloc(WORLD_Y * sizeof(signed char *));
if (vis && visbuf) {
for (x = 0; x < WORLD_Y; x++)
vis[x] = &visbuf[(WORLD_X + 1) * x];
}
memset(visbuf, 0, (WORLD_Y * (WORLD_X + 1)));
- range = (int)(range * (eff / 100.0));
- if (range < 1)
- range = 1;
- if (pr_flag)
- pr("%s efficiency %d%%, max range %d\n",
- xyas(cx, cy, owner), eff, range);
+ pr("%s efficiency %d%%, max range %d\n",
+ xyas(cx, cy, player->cnum), eff, range);
snxtsct_dist(&ns, cx, cy, range);
blankfill(radbuf, &ns.range, 1);
while (nxtsct(&ns, §)) {
- if (sect.sct_own == owner
- || sect.sct_type == SCT_WATER
- || sect.sct_type == SCT_MOUNT
- || sect.sct_type == SCT_WASTE
- || ns.curdist <= range / 3)
- rad[ns.dy][ns.dx] = dchr[sect.sct_type].d_mnem;
- else
- rad[ns.dy][ns.dx] = '?';
- changed += map_set(owner, ns.x, ns.y, rad[ns.dy][ns.dx], 0);
+ rad[ns.dy][ns.dx] = rad_char(§, ns.curdist, range,
+ player->cnum);
+ changed += map_set(player->cnum, ns.x, ns.y, rad[ns.dy][ns.dx], 0);
}
if (changed)
- writemap(owner);
- if (!pr_flag)
- return;
+ writemap(player->cnum);
snxtitem_dist(&ni, EF_PLANE, cx, cy, range);
while (nxtitem(&ni, &plane)) {
if (plane.pln_own == 0)
x = deltx(&ns.range, (int)plane.pln_x);
y = delty(&ns.range, (int)plane.pln_y);
- if ((plane.pln_flags & PLN_LAUNCHED) && plane.pln_own != owner) {
+ if (pln_is_in_orbit(&plane) && plane.pln_own != player->cnum) {
vis[y][x] = 100;
rad[y][x] = '$';
}
x = deltx(&ns.range, (int)ship.shp_x);
y = delty(&ns.range, (int)ship.shp_y);
- rng = (int)(range * ship.shp_visib / 20.0);
+ visib = shp_visib(&ship);
+ rng = (int)(range * visib / 20.0);
if (ni.curdist > rng)
continue;
if ((mchr[(int)ship.shp_type].m_flags & M_SUB) &&
ni.curdist > rng * seesub)
continue;
- if (ship.shp_visib > vis[y][x]) {
- vis[y][x] = ship.shp_visib;
+ if (visib > vis[y][x]) {
+ vis[y][x] = visib;
/* &~0x20 makes it a cap letter */
rad[y][x] = (*mchr[(int)ship.shp_type].m_name) & ~0x20;
}
}
- /*
+ /*
* make the center of the display 0
* so ve et al can find it.
*/
- rad[deltay(cy, ns.range.ly)][deltax(cx, ns.range.lx)] = '0';
- /* won't work for radar maps > WORLD_Y/2 */
-#ifdef HAY
- /* This is not correct for small, hitech worlds. */
- n = deltay(ns.range.hy, ns.range.ly);
-#else
- /* This is already available, so why not use it. */
+ rad[delty(&ns.range, cy)][deltx(&ns.range, cx)] = '0';
+
n = ns.range.height;
-#endif
for (row = 0; row < n; row++)
pr("%s\n", rad[row]);
pr("\n");
}
+/*
+ * Return distance from left edge of R to X.
+ * Value is between 0 (inclusive) and WORLD_X (exclusive).
+ * X must be normalized.
+ */
int
deltx(struct range *r, coord x)
{
- if (r->lx < r->hx)
- return x - r->lx;
-
if (x >= r->lx)
return x - r->lx;
-
return x + WORLD_X - r->lx;
}
+/*
+ * Return distance from top edge of R to Y.
+ * Value is between 0 (inclusive) and WORLD_Y (exclusive).
+ * Y must be normalized.
+ */
int
delty(struct range *r, coord y)
{
- if (r->ly < r->hy)
- return y - r->ly;
-
if (y >= r->ly)
return y - r->ly;
-
return y + WORLD_Y - r->ly;
}
+
+/*
+ * Update OWNER's bmap for radar at CX,CY.
+ * EFF is the radar's efficiency, TLEV its tech level, SPY its power.
+ */
+void
+rad_map_set(natid owner, int cx, int cy, int eff, double tlev, int spy)
+{
+ struct nstr_sect ns;
+ struct sctstr sect;
+ int range = rad_range(eff, tlev, spy);
+ int changed = 0;
+ char ch;
+
+ snxtsct_dist(&ns, cx, cy, range);
+ while (nxtsct(&ns, §)) {
+ ch = rad_char(§, ns.curdist, range, owner);
+ changed += map_set(owner, ns.x, ns.y, ch, 0);
+ }
+ if (changed)
+ writemap(owner);
+}
+
+/*
+ * Range of a radar with EFF efficiency, TLEV tech, and SPY power.
+ */
+static int
+rad_range(int eff, double tlev, int spy)
+{
+ int range;
+
+ range = (int)techfact(tlev, spy);
+ range = (int)(range * (eff / 100.0));
+ if (range < 1)
+ range = 1;
+ return range;
+}
+
+/*
+ * Return character to use in radar maps for sector SP.
+ * DIST is the distance from the radar, RANGE its range.
+ * Country CN is using the radar.
+ */
+static char
+rad_char(struct sctstr *sp, int dist, int range, natid cn)
+{
+ if (sp->sct_own == cn
+ || sp->sct_type == SCT_WATER
+ || sp->sct_type == SCT_MOUNT
+ || sp->sct_type == SCT_WASTE
+ || dist <= range / 3)
+ return dchr[sp->sct_type].d_mnem;
+ return '?';
+}
projects / empserver / blobdiff