Import of Empire 4.2.12

2003-08-23 12:23:04 +00:00 · 2003-08-23 12:23:04 +00:00 · d8b7fdfae1
commit d8b7fdfae1
817 changed files with 126589 additions and 0 deletions
--- a/src/lib/subs/nxtitem.c
+++ b/src/lib/subs/nxtitem.c
@ -0,0 +1,118 @@
+/*
+ *  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.
+ *
+ *  ---
+ *
+ *  nxtitem.c: Get the next item from a list
+ * 
+ *  Known contributors to this file:
+ *     Dave Pare, 1989
+ */
+
+#include "misc.h"
+#include "player.h"
+#include "var.h"
+#include "xy.h"
+#include "plane.h"
+#include "ship.h"
+#include "nuke.h"
+#include "land.h"
+#include "nsc.h"
+#include "nat.h"
+#include "file.h"
+#include "genitem.h"
+#include "prototypes.h"
+
+int
+nxtitem(struct nstr_item *np, caddr_t ptr)
+{
+	struct	genitem *gp;
+	int	selected;
+
+	if (np->sel == NS_UNDEF)
+		return 0;
+	gp = (struct genitem *) ptr;
+	do {
+		if (np->sel == NS_LIST) {
+			np->index++;
+			if (np->index >= np->size)
+				return 0;
+			np->cur = np->list[np->index];
+		} else {
+			np->cur++;
+		}
+		if (!np->read(np->type, np->cur, ptr)) {
+			/* if read fails, fatal */
+			return 0;
+		}
+		selected = 1;
+		switch (np->sel) {
+		/*
+		 * This one won't work unless you're running in emp_player
+		 *
+		 */
+		case NS_LIST:
+			if ((np->flags & EFF_OWNER) && !player->owner)
+				selected = 0;
+			break;
+		case NS_ALL:
+			/* XXX maybe combine NS_LIST and NS_ALL later */
+			break;
+		case NS_DIST:
+			if (!xyinrange(gp->x, gp->y, &np->range)) {
+				selected = 0;
+				break;
+			}
+			np->curdist = mapdist((int)gp->x, (int)gp->y,
+				(int)np->cx, (int)np->cy);
+			if (np->curdist > np->dist)
+				selected = 0;
+			break;
+		case NS_AREA:
+			if (!xyinrange(gp->x, gp->y, &np->range))
+				selected = 0;
+			if (gp->x == np->range.hx || gp->y == np->range.hy)
+				selected = 0;
+			break;
+		case NS_XY:
+			if (xnorm(gp->x) != np->cx || ynorm(gp->y) != np->cy)
+				selected = 0;
+			break;
+		case NS_GROUP:
+			if (np->group != gp->group)
+				selected = 0;
+			break;
+		default:
+			logerror("nxtitem: bad selector %d\n", np->sel);
+			return 0;
+		}
+		if (selected && np->ncond) {
+			/* nstr_exec is expensive, so we do it last */
+			if (!nstr_exec(np->cond, np->ncond, ptr, np->type))
+				selected = 0;
+		}
+	} while (!selected);
+	return 1;
+}