Fixed AP cost display on game load when using CALCAPCOST hook

(ref. fallout2-ce/fallout2-ce#376)

sfall/FalloutEngine/Functions_def.h

@@ -139,6 +139,7 @@ WRAP_WATCOM_FUNC2(long, intface_get_attack, DWORD*, hitMode, DWORD*, isSecondary
 WRAP_WATCOM_FUNC0(long, intface_is_item_right_hand)
 WRAP_WATCOM_FUNC0(long, intface_is_hidden)
 WRAP_WATCOM_FUNC0(void, intface_redraw) // Redraws the main game interface windows (useful after changing some data like active hand, etc.)
+WRAP_WATCOM_FUNC0(void, intface_redraw_items) // Redraws only the active item button and ammo bar
 WRAP_WATCOM_FUNC0(void, intface_toggle_item_state)
 WRAP_WATCOM_FUNC1(void, intface_update_ac, long, animate)
 WRAP_WATCOM_FUNC2(void, intface_update_move_points, long, ap, long, freeAP)

sfall/Modules/ScriptExtender.cpp

@@ -524,6 +524,8 @@ static void InitGlobalScripts() {
 
 	HookScripts::InitHookScripts();
 	LoadGlobalScriptsList();
+	// Display the correct AP cost from the HOOK_CALCAPCOST hook for the current active item
+	fo::func::intface_redraw_items();
 	// Fix map lighting from Night Vision perk when loading a saved game
 	fo::func::light_set_ambient(fo::var::ambient_light, 1); // refresh map lighting