[Freeciv-Dev] Helicopters Civ 2 Style (PR#1372)

[Raahul Kumar <raahul_da_man@xxxxxxxxx>]

On page 105 of Civ 2 Manual it states

When a Fighter or Stealth Fighter attacks a helicopter unit, the helicopter's
disadvantage is represented by reducing its firepower to one and reducing its
defense factor by 50 percent. 

Tested: April 08 CVS
Compiles cleanly.

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diff -ruN -Xdiff_ignore cvs-freeciv/common/combat.c freeciv/common/combat.c
--- cvs-freeciv/common/combat.c Wed Apr 10 13:54:24 2002
+++ freeciv/common/combat.c     Sat Apr 13 18:27:17 2002
@@ -118,6 +118,10 @@
   /* pearl harbour */
   if (is_sailing_unit(defender) && map_get_city(defender->x, defender->y))
     *def_fp = 1;
+  
+  /* When attacked by fighters, helicopters have their firepower reduced to 1*/
+  if (is_heli_unit(defender) && unit_flag(attacker, F_FIGHTER))
+    *def_fp = 1;
 
   /* In land bombardment both units have their firepower reduced to 1 */
   if (is_sailing_unit(attacker)
@@ -331,6 +335,11 @@
       defensepower *= 5;
     }
 
+    if (unit_type_flag(att_type, F_FIGHTER) 
+    && is_heli_unittype(def_type)) {
+      defensepower /= 2;
+    }
+         
     if (is_air_unittype(att_type) && pcity) {
       if (city_got_building(pcity, B_SAM)) {
        defensepower *= 2;