Update copyright notice

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

diff --git a/src/lib/global/ship.c b/src/lib/global/ship.c
index 3a9dddd99b2b6645a6697d62931d29fba1189e21..ca469a9fdc79f02294bd4198ee2336621ffd0e0b 100644 (file)
--- a/src/lib/global/ship.c
+++ b/src/lib/global/ship.c
@@ -1,6 +1,6 @@
 /*
  *  Empire - A multi-player, client/server Internet based war game.
- *  Copyright (C) 1986-2008, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ *  Copyright (C) 1986-2010, 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 @@
  *  ---
  *
  *  ship.c: Ship 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 "ship.h"
 
 /*
@@ -45,3 +47,74 @@
  * Terminated by a sentinel with null m_name.
  */
 struct mchrstr mchr[SHP_TYPE_MAX + 2];
+
+#define logx(a, b) (log((a)) / log((b)))
+#define SHP_DEF(b, t) (t ? (b * (logx(t, 40.0) < 1.0 ? 1.0 : \
+                                logx(t, 40.0))) : b)
+#define SHP_SPD(b, t) (t ? (b * (logx(t, 35.0) < 1.0 ? 1.0 : \
+                                logx(t, 35.0))) : b)
+#define SHP_VIS(b, t) (b * (1 - (sqrt(t) / 50)))
+#define SHP_RNG(b, t) (t ? (b * (logx(t, 35.0) < 1.0 ? 1.0 : \
+                                logx(t, 35.0))) : b)
+#define SHP_FIR(b, t) (t ? (b * (logx(t, 60.0) < 1.0 ? 1.0 : \
+                                logx(t, 60.0))) : b)
+
+int
+m_armor(struct mchrstr *mcp, int tech)
+{
+    return SHP_DEF(mcp->m_armor, MAX(0, tech - mcp->m_tech));
+}
+
+int
+m_speed(struct mchrstr *mcp, int tech)
+{
+    return SHP_SPD(mcp->m_speed, MAX(0, tech - mcp->m_tech));
+}
+
+int
+m_visib(struct mchrstr *mcp, int tech)
+{
+    return SHP_VIS(mcp->m_visib, MAX(0, tech - mcp->m_tech));
+}
+
+int
+m_frnge(struct mchrstr *mcp, int tech)
+{
+    return SHP_RNG(mcp->m_frnge, MAX(0, tech - mcp->m_tech));
+}
+
+int
+m_glim(struct mchrstr *mcp, int tech)
+{
+    return SHP_FIR(mcp->m_glim, MAX(0, tech - mcp->m_tech));
+}
+
+int
+shp_armor(struct shpstr *sp)
+{
+    return m_armor(mchr + sp->shp_type, sp->shp_tech);
+}
+
+int
+shp_speed(struct shpstr *sp)
+{
+    return m_speed(mchr + sp->shp_type, sp->shp_tech);
+}
+
+int
+shp_visib(struct shpstr *sp)
+{
+    return m_visib(mchr + sp->shp_type, sp->shp_tech);
+}
+
+int
+shp_frnge(struct shpstr *sp)
+{
+    return m_frnge(mchr + sp->shp_type, sp->shp_tech);
+}
+
+int
+shp_glim(struct shpstr *sp)
+{
+    return m_glim(mchr + sp->shp_type, sp->shp_tech);
+}