FireSale can be toggled via lua script, the AI in soviet 1 won't do a fire sale, and the allied radar dome is no longer a fake dome.

code/redalert/house.cpp

@@ -525,6 +525,7 @@ HouseClass::HouseClass(HousesType house) :
 	RepairDelay(0),
 	BuildDelay(0),
 	ActLike(Class->House),
+	fireSaleAvailable(false),
 	IsHuman(false),
 	WasHuman(false),
 	IsPlayerControl(false),
@@ -7513,6 +7514,11 @@ bool HouseClass::Is_Hack_Prevented(RTTIType rtti, int value) const
  *=============================================================================================*/
 bool HouseClass::Fire_Sale(void)
 {
+	// Toggle the fire sale ability.
+	if(!fireSaleAvailable) {
+		return false;
+	}
+
 	if (CurBuildings > 0) {
 		for (int index = 0; index < Buildings.Count(); index++) {
 			BuildingClass * b = Buildings.Ptr(index);

code/redalert/house.h

@@ -688,6 +688,7 @@ class HouseClass {
 		// Added so the ally flags could be sent to client machines - 09 / 12 / 2019 JAS
 		unsigned Get_Ally_Flags();
 
+		void ToggleFireSaleAbility(bool fireSaleEnabled) { this->fireSaleAvailable = fireSaleEnabled; }
 		bool Fire_Sale(void);
 		bool Is_Hack_Prevented(RTTIType rtti, int value) const;
 		bool Is_No_YakMig(void) const;
@@ -851,6 +852,8 @@ class HouseClass {
 		int AI_Infantry(void);
 		int AI_Aircraft(void);
 
+		bool fireSaleAvailable;
+
 		/*
 		**	This is a bit field record of all the other houses that are allies with
 		**	this house. It is presumed that any house that isn't an ally, is therefore

code/redalert/mapscript.cpp

@@ -5,6 +5,24 @@
 * Red Alert Vanilla Actions                                                                   *
 *=============================================================================================*/
 
+static int Script_ToggleFireSale(lua_State* L) {
+
+    int houseType = lua_tointeger(L, 1);
+    int fireSaleEnabled = lua_tointeger(L, 2);
+
+    if (houseType != HOUSE_NONE) {
+
+        HouseClass* this_house = HouseClass::As_Pointer((HousesType)houseType);
+
+        if (this_house != NULL) {
+            this_house->ToggleFireSaleAbility(fireSaleEnabled != 0);
+        }
+    }
+
+    return 1;
+}
+
+
 /***********************************************************************************************
  * Script_Win - The specified player wins                                                      *
  *                                                                                             *
@@ -7620,6 +7638,8 @@ bool MapScript::Init(const char* mapName) {
 * Script Globals                                                                              *
 *=============================================================================================*/
 
+    lua_register(L, "ToggleFireSale", Script_ToggleFireSale);
+
     lua_pushnumber(L, PlayerPtr->ID);                                                // Local player (house) index
     lua_setglobal(L, "_localPlayer");