Import of Empire 4.2.12

src/lib/common/sectdamage.c

@@ -0,0 +1,141 @@
+/*
+ *  Empire - A multi-player, client/server Internet based war game.
+ *  Copyright (C) 1986-2000, 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 the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
+ *  related information and legal notices. It is expected that any future
+ *  projects/authors will amend these files as needed.
+ *
+ *  ---
+ *
+ *  sectdamage.c: Damage a sector
+ * 
+ *  Known contributors to this file:
+ *     Dave Pare, 1989
+ *     Steve McClure, 1996
+ */
+
+#include "misc.h"
+#include "var.h"
+#include "sect.h"
+#include "ship.h"
+#include "land.h"
+#include "plane.h"
+#include "nuke.h"
+#include "xy.h"
+#include "nsc.h"
+#include "file.h"
+#include "nat.h"
+#include "optlist.h"
+#include "damage.h"
+#include "common.h"
+#include "gen.h"
+#include "subs.h"
+#include "lost.h"
+
+int
+sect_damage(struct sctstr *sp, int dam, struct emp_qelem *list)
+{
+	int     eff;
+
+	if (dam <= 0)
+		return 0;
+	if (dam > 100)
+		dam = 100;
+
+	sp->sct_effic = damage((int)sp->sct_effic, dam);
+	sp->sct_road = damage((int)sp->sct_road, dam);
+	sp->sct_rail = damage((int)sp->sct_rail, dam);
+	sp->sct_defense = damage((int)sp->sct_defense, dam);
+	if (!opt_DEFENSE_INFRA)
+	  sp->sct_defense = sp->sct_effic;
+
+	eff = dam;
+
+	if (sp->sct_mobil > 0)
+	     sp->sct_mobil = damage((int)sp->sct_mobil, dam);
+	sp->sct_nv = vl_damage(dam,
+			       sp->sct_vtype, sp->sct_vamt,
+			       (int)sp->sct_nv);
+	if (opt_EASY_BRIDGES == 0) {
+	  if (sp->sct_effic < 20 && sp->sct_type == SCT_BHEAD)
+	    bridgefall(sp, list);
+	} else {
+	  if (sp->sct_effic < 20 && sp->sct_type == SCT_BSPAN)
+	    knockdown(sp, list);
+	} 
+	putsect(sp);
+	return eff;
+}
+
+int
+sectdamage(struct sctstr *sp, int dam, struct emp_qelem *list)
+{
+	extern	double unit_damage;
+	struct	nstr_item ni;
+	struct	lndstr land;
+	struct  plnstr plane;
+	double	real_dam;
+	int     eff;
+	double  sector_strength();
+
+	/* Some sectors are harder/easier to kill..   */
+	/* Average sector has a dstr of 1, so adjust  */
+	/* the damage accordingly. Makes forts a pain */
+	
+/*	real_dam = (double)dam * (1.0/((((double)(dchr[sp->sct_type].d_dstr - 1))*(sp->sct_effic/100.0)) + 1.0));*/
+	real_dam = (double)dam * (1.0/sector_strength(sp));
+	dam = ldround(real_dam,1);
+
+	eff = sect_damage(sp, PERCENT_DAMAGE(dam), list);
+
+	/* Damage all the land units in the sector */
+	/* Units don't take full damage */
+	dam = ldround(DPERCENT_DAMAGE(dam * unit_damage), 1);
+	if (dam <= 0)
+		return eff;
+
+	snxtitem_xy(&ni,EF_LAND,sp->sct_x,sp->sct_y);	
+	while(nxtitem(&ni,(s_char *)&land)){
+		if (!land.lnd_own)
+			continue;
+		landdamage(&land,dam);
+		putland(land.lnd_uid,&land);
+	}
+
+	dam = dam / 7;
+	if (dam <= 0)
+	    return eff;
+	snxtitem_xy(&ni, EF_PLANE, sp->sct_x, sp->sct_y);
+	while (nxtitem(&ni, (s_char *)&plane)) {
+	    if (!plane.pln_own)
+		continue;
+	    if (plane.pln_flags & PLN_LAUNCHED)
+		continue;
+	    if (plane.pln_ship >= 0)
+		continue;
+	    /* Is this plane flying in this list? */
+	    if (ac_isflying(&plane, list))
+	      continue;
+	    planedamage(&plane, dam);
+	    putplane(plane.pln_uid, &plane);
+	}
+	return eff;
+}