Update copyright notice

[empserver] / src / lib / global / plane.c

diff --git a/src/lib/global/plane.c b/src/lib/global/plane.c
index b2842b79b11b0bcccd87bd69c22f33d9e9636d73..cd5b14399806faf9389d4f88e4d28d96151b6720 100644 (file)
--- a/src/lib/global/plane.c
+++ b/src/lib/global/plane.c
@@ -1,6 +1,6 @@
 /*
  *  Empire - A multi-player, client/server Internet based war game.
- *  Copyright (C) 1986-2006, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ *  Copyright (C) 1986-2009, Dave Pare, Jeff Bailey, Thomas Ruschak,
  *                           Ken Stevens, Steve McClure
  *
  *  This program is free software; you can redistribute it and/or modify
@@ -26,7 +26,7 @@
  *  ---
  *
  *  plane.c: Plane characteristics
- * 
+ *
  *  Known contributors to this file:
  *     Dave Pare, 1986
  *     Jeff Bailey
@@ -37,6 +37,8 @@
 
 #include <config.h>
 
+#include <math.h>
+#include "misc.h"
 #include "plane.h"
 
 /*
@@ -45,3 +47,70 @@
  * Terminated by a sentinel with null pl_name.
  */
 struct plchrstr plchr[PLN_TYPE_MAX + 2];
+
+#define logx(a, b) (log((a)) / log((b)))
+#define PLN_ATTDEF(b, t) (b + ((b?1:0) * ((t/20)>10?10:(t/20))))
+#define PLN_ACC(b, t) (b * (1.0 - (sqrt(t) / 50.)))
+#define PLN_RAN(b, t) (t ? (b + (logx(t, 2.0))) : b)
+#define PLN_LOAD(b, t) (t ? (b * (logx(t, 50.0) < 1.0 ? 1.0 : \
+                                 logx(t, 50.0))) : b)
+
+int
+pl_att(struct plchrstr *pcp, int tech)
+{
+    return PLN_ATTDEF(pcp->pl_att, MAX(0, tech - pcp->pl_tech));
+}
+
+int
+pl_def(struct plchrstr *pcp, int tech)
+{
+    return PLN_ATTDEF(pcp->pl_def, MAX(0, tech - pcp->pl_tech));
+}
+
+int
+pl_acc(struct plchrstr *pcp, int tech)
+{
+    return PLN_ACC(pcp->pl_acc, MAX(0, tech - pcp->pl_tech));
+}
+
+int
+pl_range(struct plchrstr *pcp, int tech)
+{
+    return PLN_RAN(pcp->pl_range, MAX(0, tech - pcp->pl_tech));
+}
+
+int
+pl_load(struct plchrstr *pcp, int tech)
+{
+    return PLN_LOAD(pcp->pl_load, MAX(0, tech - pcp->pl_tech));
+}
+
+int
+pln_att(struct plnstr *pp)
+{
+    return pl_att(plchr + pp->pln_type, pp->pln_tech);
+}
+
+int
+pln_def(struct plnstr *pp)
+{
+    return pl_def(plchr + pp->pln_type, pp->pln_tech);
+}
+
+int
+pln_acc(struct plnstr *pp)
+{
+    return pl_acc(plchr + pp->pln_type, pp->pln_tech);
+}
+
+int
+pln_range_max(struct plnstr *pp)
+{
+    return pl_range(plchr + pp->pln_type, pp->pln_tech);
+}
+
+int
+pln_load(struct plnstr *pp)
+{
+    return pl_load(plchr + pp->pln_type, pp->pln_tech);
+}