Import of Empire 4.2.12

src/lib/common/res_pop.c

@@ -0,0 +1,71 @@
+/*
+ *  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.
+ *
+ *  ---
+ *
+ *  res_pop.c: Get maximum pop of a sector
+ * 
+ *  Known contributors to this file:
+ *     Ken Stevens, 1995
+ *     Steve McClure, 1998
+ */
+
+#include <math.h>
+#include "misc.h"
+#include "var.h"
+#include "sect.h"
+#include "nat.h"
+#include "item.h"
+#include "news.h"
+#include "file.h"
+#include "xy.h"
+#include "optlist.h"
+#include "common.h"
+
+int
+max_pop(float research, struct sctstr *sp)
+{
+	int	maxpop = 999;
+
+	if (opt_RES_POP) {
+	    maxpop = (((50.0+4.0*research)/(200.0+3.0*research))*600.0) + 400;
+	    if (maxpop > 999)
+		maxpop = 999;
+	}
+
+	if (opt_BIG_CITY) {
+	    if (sp && dchr[sp->sct_type].d_pkg == UPKG)
+		maxpop = (int)(maxpop * ((9.0 * sp->sct_effic) / 100 + 1));
+	}
+
+	if (sp) {
+	    if (sp->sct_type == SCT_MOUNT)
+		maxpop /= 10;
+	    else if (sp->sct_type == SCT_PLAINS)
+		maxpop /= 20;
+	}
+
+	return maxpop;
+}