Backported 5 game hooks from 4.1/4.2:

* SNEAK, STDPROCEDURE, STDPROCEDURE_END, TARGETOBJECT, ENCOUNTER.

Updated documents and example mods.

artifacts/example_mods/Sneak/gl_sneak.ssl

@@ -0,0 +1,46 @@
+/*
+   Example implementation of the algorithm of how the game engine checks the Sneak skill
+*/
+
+#include "..\headers\define.h"
+#include "..\headers\command.h"
+#include "..\headers\sfall\sfall.h"
+
+procedure start;
+
+procedure start begin
+   if game_loaded then begin
+      register_hook(HOOK_SNEAK);
+   end else begin
+      variable sneakIsSuccess, time, level;
+
+      level := critter_skill_level(dude_obj, SKILL_SNEAK);
+      if (roll_vs_skill(dude_obj, SKILL_SNEAK, 0) < ROLL_SUCCESS) then begin
+         sneakIsSuccess := false;
+         time := ONE_GAME_MINUTE;
+         if (level <= 250) then
+            if (level <= 200) then
+               if (level <= 170) then
+                  if (level <= 135) then
+                     if (level <= 100) then
+                        if (level > 80) then
+                           time := 400;          // 40 secs
+                     else
+                        time := 300;             // 30 secs
+                  else
+                     time := 200;                // 20 secs
+               else
+                  time := 150;                   // 15 secs
+            else
+               time := 120;                      // 12 secs
+         else
+            time := 100;                         // 10 secs for skill level > 250
+      end
+      else begin
+         sneakIsSuccess := true;
+         time := ONE_GAME_MINUTE;
+      end
+      set_sfall_return(sneakIsSuccess);
+      set_sfall_return(time);
+   end
+end

artifacts/scripting/headers/sfall.h

@@ -60,6 +60,11 @@
 #define HOOK_USEANIMOBJ       (32)
 #define HOOK_EXPLOSIVETIMER   (33)
 #define HOOK_DESCRIPTIONOBJ   (34)
+#define HOOK_SNEAK            (39)
+#define HOOK_STDPROCEDURE     (40)
+#define HOOK_STDPROCEDURE_END (41)
+#define HOOK_TARGETOBJECT     (42)
+#define HOOK_ENCOUNTER        (43)
 
 // Valid arguments to list_begin
 #define LIST_CRITTERS    (0)
@@ -321,6 +326,7 @@
 #define get_npc_stat_max(stat)                                  sfall_func2("get_stat_max", stat, 1)
 #define get_npc_stat_min(stat)                                  sfall_func2("get_stat_min", stat, 1)
 #define get_sfall_arg_at(argNum)                                sfall_func1("get_sfall_arg_at", argNum)
+#define get_string_pointer(text)                                sfall_func1("get_string_pointer", text)
 #define get_terrain_name(x, y)                                  sfall_func2("get_terrain_name", x, y)
 #define get_text_width(text)                                    sfall_func1("get_text_width", text)
 #define hide_win                                                sfall_func0("hide_window")

artifacts/scripting/hookscripts.md

@@ -676,3 +676,67 @@ Obj     arg0 - the object
 
 int     ret0 - a pointer to the new text received by using the get_string_pointer function
 ```
+
+-------------------------------------------
+
+#### `HOOK_SNEAK (hs_sneak.int)`
+
+Runs when the Sneak skill is activated, or when the game rolls another Sneak check after the duration for the current one is over.\
+You can override the result of a random Sneak check or the duration time for the current result.
+
+```
+int     arg0 - Sneak check result: 1 - success, 0 - failure
+int     arg1 - the duration in ticks for the current Sneak check (time depends on Sneak skill level)
+Critter arg2 - the critter (usually dude_obj)
+
+int     ret0 - overrides the result of the Sneak check
+int     ret1 - overrides the duration time for the current result
+```
+
+-------------------------------------------
+
+#### `HOOK_STDPROCEDURE, HOOK_STDPROCEDURE_END (hs_stdprocedure.int)`
+
+Runs before or after Fallout engine executes a standard procedure (handler) in any script of any object.
+
+__NOTE:__ This hook will not be executed for `start`, `critter_p_proc`, `timed_event_p_proc`, and `map_update_p_proc` procedures.
+
+```
+int     arg0 - the number of the standard script handler (see define.h)
+Obj     arg1 - the object that owns this handler (self_obj)
+Obj     arg2 - the object that called this handler (source_obj, can be 0)
+int     arg3 - 1 after procedure execution (for HOOK_STDPROCEDURE_END), 0 otherwise
+
+int     ret0 - pass -1 to cancel the execution of the handler (only for HOOK_STDPROCEDURE)
+```
+
+-------------------------------------------
+
+#### `HOOK_TARGETOBJECT (hs_targetobject.int)`
+
+Runs when the targeting cursor hovers over an object, or when the player tries to attack the target object.\
+You can override the target object or prevent the player from attacking the chosen target.
+
+```
+int     arg0 - event type: 0 - when the targeting cursor hovers over the object, 1 - when trying to attack the target object
+int     arg1 - 1 when the target object is valid to attack, 0 otherwise
+Obj     arg2 - the target object
+
+mixed   ret0 - overrides the target object, or pass -1 to prevent the player from attacking the object
+```
+
+-------------------------------------------
+
+#### `HOOK_ENCOUNTER (hs_encounter.int)`
+
+Runs whenever a random encounter occurs (except the Horrigan meeting and scripted encounters), or when the player enters a local map from the world map.\
+You can override the map for loading or the encounter.
+
+```
+int     arg0 - event type: 0 - when a random encounter occurs, 1 - when the player enters from the world map
+int     arg1 - the map ID that the encounter will load (see MAPS.h or Maps.txt)
+int     arg2 - 1 when the encounter occurs is a special encounter, 0 otherwise
+
+int     ret0 - overrides the map ID, or pass -1 for event type 0 to cancel the encounter and continue traveling
+int     ret1 - pass 1 to cancel the encounter and load the specified map from the ret0 (only for event type 0)
+```

sfall/FalloutEngine/FunctionOffsets_def.h

@@ -539,7 +539,11 @@ FUNC(obj_shoot_blocking_at_,          0x48B930)
 FUNC(obj_sight_blocking_at_,          0x48BB88)
 FUNC(obj_top_environment_,            0x48B304)
 FUNC(obj_turn_off_,                   0x48AE68) // int aObj<eax>, int ???<edx>
+FUNC(obj_turn_off_light_,             0x48AD9C)
+FUNC(obj_turn_off_outline_,           0x48AF00)
 FUNC(obj_turn_on_,                    0x48ADF0)
+FUNC(obj_turn_on_light_,              0x48AD48)
+FUNC(obj_turn_on_outline_,            0x48AEE4)
 FUNC(obj_unjam_lock_,                 0x49D480)
 FUNC(obj_use_book_,                   0x49B9F0)
 FUNC(obj_use_power_on_car_,           0x49BDE8)

sfall/FalloutEngine/VariableOffsets.h

@@ -81,6 +81,7 @@
 #define FO_VAR_edit_win                   0x57060C
 #define FO_VAR_Educated                   0x57082C
 #define FO_VAR_elevation                  0x631D2C
+#define FO_VAR_EncounterMapID             0x672E4C
 #define FO_VAR_endgame_subtitle_done      0x570BD0
 #define FO_VAR_endgame_subtitle_characters 0x51866C
 #define FO_VAR_endgame_voiceover_loaded   0x570AB8
@@ -206,6 +207,8 @@
 #define FO_VAR_obj_seen                   0x662445
 #define FO_VAR_objectTable                0x639DA0
 #define FO_VAR_objItemOutlineState        0x519798
+#define FO_VAR_old_world_xpos             0x672E5C
+#define FO_VAR_old_world_ypos             0x672E60
 #define FO_VAR_optionRect                 0x58ECC0
 #define FO_VAR_optionsButtonDown          0x59D400
 #define FO_VAR_optionsButtonDown1         0x570518

sfall/Modules/HookScripts.cpp

@@ -97,6 +97,15 @@ static HooksInjectInfo injectHooks[] = {
 	{HOOK_USEANIMOBJ,       Inject_UseAnimateObjHook,    false},
 	{HOOK_EXPLOSIVETIMER,   Inject_ExplosiveTimerHook,   false},
 	{HOOK_DESCRIPTIONOBJ,   Inject_DescriptionObjHook,   false},
+	{-1,                    nullptr,                     false}, // dummy
+	{-1,                    nullptr,                     false}, // dummy
+	{-1,                    nullptr,                     false}, // dummy
+	{-1,                    nullptr,                     false}, // dummy
+	{HOOK_SNEAK,            Inject_SneakCheckHook,       false},
+	{HOOK_STDPROCEDURE,     Inject_ScriptProcedureHook,  false},
+	{HOOK_STDPROCEDURE_END, Inject_ScriptProcedureHook2, false},
+	{HOOK_TARGETOBJECT,     Inject_TargetObjectHook,     false},
+	{HOOK_ENCOUNTER,        Inject_EncounterHook,        false},
 };
 
 void HookScripts::InjectingHook(int hookId) {

sfall/Modules/HookScripts.h

@@ -60,6 +60,11 @@ enum HookType
 	HOOK_USEANIMOBJ       = 32,
 	HOOK_EXPLOSIVETIMER   = 33,
 	HOOK_DESCRIPTIONOBJ   = 34,
+	HOOK_SNEAK            = 39,
+	HOOK_STDPROCEDURE     = 40,
+	HOOK_STDPROCEDURE_END = 41,
+	HOOK_TARGETOBJECT     = 42,
+	HOOK_ENCOUNTER        = 43,
 	HOOK_COUNT
 };
 

sfall/Modules/HookScripts/CombatHs.cpp

@@ -317,6 +317,66 @@ skip:
 	}
 }
 
+static DWORD targetRet = 0;
+static bool targetObjHookHasRet = false;
+
+static long __fastcall TargetObjectHook(DWORD isValid, DWORD object, long type) {
+	if (isValid > 1) isValid = 1;
+
+	BeginHook();
+	argCount = 3;
+
+	args[0] = type;    // 0 - mouse hovering over target, 1 - mouse clicking on target
+	args[1] = isValid; // 1 - target is valid
+	args[2] = object;  // target object
+
+	if (isValid == 0) object = 0; // it is necessary for the proper operation of the engine code
+	if (type == 0) targetRet = 0; // unset ret from the previous execution of the hook
+
+	RunHookScript(HOOK_TARGETOBJECT);
+
+	if (cRet > 0) {
+		targetRet = (rets[0] != 0) ? rets[0] : object; // 0 - default object, -1 - invalid target, or object override
+		object = (targetRet != -1) ? targetRet : 0;    // object can't be -1
+		targetObjHookHasRet = true;
+	} else if (targetObjHookHasRet && type == 1) {
+		targetObjHookHasRet = false;
+		if (targetRet != -1) object = targetRet;
+	}
+	EndHook();
+	return object; // null or object
+}
+
+static void __declspec(naked) gmouse_bk_process_hook() {
+	__asm {
+		push 0;        // type
+		mov  ecx, eax; // 1 - valid(object) or 0 - invalid
+		mov  edx, edi; // object under mouse
+		call TargetObjectHook;
+		mov  edi, eax;
+		retn;
+	}
+}
+
+static void __declspec(naked) gmouse_handle_event_hook() {
+	__asm {
+		push 1;        // type
+		mov  ecx, eax; // 1 - valid(object) or 0 - invalid
+		cmp  dword ptr ds:[targetRet], 0;
+		je   default;
+		// override
+		mov  ecx, 1;
+		xor  eax, eax;
+		cmp  dword ptr ds:[targetRet], -1;
+		cmove  ecx, eax;       // if true - set invalid
+		cmovne edx, targetRet; // if false - set override object
+default:
+		call TargetObjectHook;
+		mov  edx, eax;
+		retn;
+	}
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 
 void Inject_ToHitHook() {
@@ -381,6 +441,14 @@ void Inject_AmmoCostHook() {
 	HookCall(0x423A7C, AmmoCostHook); // compute_attack_
 }
 
+void Inject_TargetObjectHook() {
+	MakeCall(0x44BB16, gmouse_bk_process_hook, 1);
+	SafeWrite8(0x44BB00, 0x15);
+
+	MakeCall(0x44C286, gmouse_handle_event_hook, 1);
+	SafeWrite8(0x44C26E, 0x17);
+}
+
 void InitCombatHookScripts() {
 	HookScripts::LoadHookScript("hs_tohit", HOOK_TOHIT);
 	HookScripts::LoadHookScript("hs_afterhitroll", HOOK_AFTERHITROLL);
@@ -389,6 +457,7 @@ void InitCombatHookScripts() {
 	HookScripts::LoadHookScript("hs_findtarget", HOOK_FINDTARGET);
 	HookScripts::LoadHookScript("hs_itemdamage", HOOK_ITEMDAMAGE);
 	HookScripts::LoadHookScript("hs_ammocost", HOOK_AMMOCOST);
+	HookScripts::LoadHookScript("hs_targetobject", HOOK_TARGETOBJECT);
 }
 
 }

sfall/Modules/HookScripts/CombatHs.h

@@ -14,6 +14,7 @@ void Inject_CombatDamageHook();
 void Inject_FindTargetHook();
 void Inject_ItemDamageHook();
 void Inject_AmmoCostHook();
+void Inject_TargetObjectHook();
 
 int __fastcall AmmoCostHook_Script(DWORD hookType, fo::GameObject* weapon, DWORD &rounds);
 

sfall/Modules/HookScripts/MiscHs.cpp

@@ -150,6 +150,32 @@ defaultHandler:
 	}
 }
 
+static void __declspec(naked) SneakCheckHook() {
+	__asm {
+		HookBegin;
+		mov esi, ds:[FO_VAR_sneak_working];
+		mov args[0], esi; // 1 = successful sneak
+		mov args[4], eax; // timer
+		mov args[8], edx; // critter
+		pushadc;
+	}
+
+	argCount = 3;
+	RunHookScript(HOOK_SNEAK);
+
+	__asm {
+		popadc;
+		cmp  cRet, 1;
+		jb   skip;
+		mov  esi, rets[0];
+		mov  ds:[FO_VAR_sneak_working], esi;
+		cmova eax, rets[4]; // override timer
+skip:
+		HookEnd;
+		jmp  fo::funcoffs::queue_add_;
+	}
+}
+
 static __forceinline long PerceptionRangeHook_Script(fo::GameObject* watcher, fo::GameObject* target, int type, long result) {
 	BeginHook();
 	argCount = 4;
@@ -433,6 +459,98 @@ end:
 	}
 }
 
+// Hook does not work for scripted encounters and meeting Horrigan
+static long __fastcall EncounterHook_Script(long encounterMapID, long eventType, long encType) {
+	BeginHook();
+	argCount = 3;
+
+	args[0] = eventType; // 1 - enter local map from the world map
+	args[1] = encounterMapID;
+	args[2] = (encType == 3); // 1 - special random encounter
+
+	RunHookScript(HOOK_ENCOUNTER);
+
+	if (cRet) {
+		encounterMapID = rets[0];
+		if (encounterMapID < -1) encounterMapID = -1;
+		if (eventType == 0 && cRet > 1 && encounterMapID != -1 && rets[1] == 1) { // 1 - cancel the encounter and load the specified map
+			encounterMapID = -encounterMapID - 2; // map number in negative value
+		}
+		if (encounterMapID < 0) {
+			// set the coordinates of the last encounter
+			fo::var::setInt(FO_VAR_old_world_xpos) = *fo::ptr::world_xpos;
+			fo::var::setInt(FO_VAR_old_world_ypos) = *fo::ptr::world_ypos;
+		}
+	}
+	EndHook();
+	return encounterMapID;
+}
+
+static void __declspec(naked) wmWorldMap_hook() {
+	__asm {
+		mov  ebx, eax; // keep map id
+		mov  edx, 1;
+		mov  ecx, eax;
+		push 0;
+		call EncounterHook_Script;
+		test eax, eax;
+		cmovl eax, ebx; // restore map if map < 0
+		jmp  fo::funcoffs::map_load_idx_; // eax - map id
+	}
+}
+
+static void __declspec(naked) wmRndEncounterOccurred_hook() {
+	static long hkEncounterMapID = -1;
+	__asm {
+		cmp  hkEncounterMapID, -1;
+		jnz  blinkIcon;
+		test edx, edx;
+		jz   hookRun;
+		jmp  fo::funcoffs::wmInterfaceRefresh_;
+hookRun: /////////////////////////////////
+		push edx;
+		push ecx;
+		push ecx; // encType
+		xor  edx, edx;
+		mov  ecx, dword ptr ds:[FO_VAR_EncounterMapID];
+		call EncounterHook_Script;
+		pop  ecx;
+		pop  edx;
+		mov  dword ptr ds:[FO_VAR_EncounterMapID], eax;
+		cmp  eax, -1;
+		je   cancelEnc;
+		jl   clearEnc;
+		jmp  fo::funcoffs::wmInterfaceRefresh_;
+clearEnc: /////////////////////////////////
+		mov  dword ptr ds:[FO_VAR_EncounterMapID], -1;
+		neg  eax;
+		sub  eax, 2; // recover correct map number from negative value
+		mov  hkEncounterMapID, eax;
+		dec  edx;
+blinkIcon:
+		cmp  edx, 6; // counter of blinking
+		jge  break;
+		jmp  fo::funcoffs::wmInterfaceRefresh_;
+break:
+		mov  eax, hkEncounterMapID;
+		cmp  dword ptr ds:[FO_VAR_Move_on_Car], 0;
+		je   noCar;
+		mov  edx, FO_VAR_carCurrentArea;
+		call fo::funcoffs::wmMatchAreaContainingMapIdx_;
+		mov  eax, hkEncounterMapID;
+noCar:
+		call fo::funcoffs::map_load_idx_;
+		xor  eax, eax;
+		mov  hkEncounterMapID, -1;
+cancelEnc:
+		inc  eax; // 0 - continue movement, 1 - interrupt
+		mov  dword ptr ds:[FO_VAR_wmEncounterIconShow], 0;
+		add  esp, 4;
+		mov  ebx, 0x4C0BC7;
+		jmp  ebx;
+	}
+}
+
 void Inject_BarterPriceHook() {
 	const DWORD barterPriceHkAddr[] = {
 		0x474D4C, // barter_attempt_transaction_ (offers button)
@@ -455,6 +573,10 @@ void Inject_StealCheckHook() {
 	HookCalls(StealCheckHook, stealCheckHkAddr);
 }
 
+void Inject_SneakCheckHook() {
+	HookCall(0x42E3D9, SneakCheckHook);
+}
+
 void Inject_WithinPerceptionHook() {
 	const DWORD perceptionRngHkAddr[] = {
 		0x42B4ED,
@@ -488,15 +610,22 @@ void Inject_ExplosiveTimerHook() {
 	HookCall(0x49BDC4, ExplosiveTimerHook);
 }
 
+void Inject_EncounterHook() {
+	HookCall(0x4C02AF, wmWorldMap_hook);
+	HookCall(0x4C095C, wmRndEncounterOccurred_hook);
+}
+
 void InitMiscHookScripts() {
 	HookScripts::LoadHookScript("hs_barterprice", HOOK_BARTERPRICE);
 	HookScripts::LoadHookScript("hs_useskill", HOOK_USESKILL);
 	HookScripts::LoadHookScript("hs_steal", HOOK_STEAL);
+	HookScripts::LoadHookScript("hs_sneak", HOOK_SNEAK);
 	HookScripts::LoadHookScript("hs_withinperception", HOOK_WITHINPERCEPTION);
 	HookScripts::LoadHookScript("hs_cartravel", HOOK_CARTRAVEL);
 	HookScripts::LoadHookScript("hs_setglobalvar", HOOK_SETGLOBALVAR);
 	HookScripts::LoadHookScript("hs_resttimer", HOOK_RESTTIMER);
 	HookScripts::LoadHookScript("hs_explosivetimer", HOOK_EXPLOSIVETIMER);
+	HookScripts::LoadHookScript("hs_encounter", HOOK_ENCOUNTER);
 }
 
 }

sfall/Modules/HookScripts/MiscHs.h

@@ -8,11 +8,13 @@ void InitMiscHookScripts();
 void Inject_BarterPriceHook();
 void Inject_UseSkillHook();
 void Inject_StealCheckHook();
+void Inject_SneakCheckHook();
 void Inject_WithinPerceptionHook();
 void Inject_CarTravelHook();
 void Inject_SetGlobalVarHook();
 void Inject_RestTimerHook();
 void Inject_ExplosiveTimerHook();
+void Inject_EncounterHook();
 
 long PerceptionRangeHook_Invoke(fo::GameObject* watcher, fo::GameObject* target, long type, long result);
 

sfall/Modules/HookScripts/ObjectHs.cpp

@@ -185,6 +185,76 @@ skip:
 	}
 }
 
+static DWORD __fastcall StdProcedureHook_Script(long numHandler, fo::ScriptInstance* script, DWORD procTable) {
+	BeginHook();
+	argCount = 4;
+
+	args[0] = numHandler;
+	args[1] = (DWORD)script->selfObject;
+	args[2] = (DWORD)script->sourceObject;
+
+	if (procTable) {
+		args[3] = 0;
+		RunHookScript(HOOK_STDPROCEDURE);
+
+		if (cRet > 0) {
+			long retval = rets[0];
+			if (retval == -1) procTable = retval;
+		}
+	} else {
+		args[3] = 1;
+		RunHookScript(HOOK_STDPROCEDURE_END);
+	}
+	EndHook();
+	return procTable;
+}
+
+static void __declspec(naked) ScriptStdProcedureHook() {
+	using namespace fo::Scripts;
+	__asm {
+		mov  eax, [eax + 0x54]; // Script.procedure_table
+		test eax, eax;
+		jle  end;
+		cmp  ecx, critter_p_proc;
+		je   skip;
+		cmp  ecx, timed_event_p_proc;
+		je   skip;
+		cmp  ecx, map_update_p_proc;
+		je   skip;
+		cmp  ecx, start;
+		jle  skip;
+		push ecx;
+		push eax;      // procTable
+		mov  edx, esi; // script
+		call StdProcedureHook_Script; // ecx - numHandler
+		pop  ecx;
+skip:
+		test eax, eax;
+end:
+		retn;
+	}
+}
+
+static void __declspec(naked) After_ScriptStdProcedureHook() {
+	using namespace fo::Scripts;
+	__asm {
+		call fo::funcoffs::executeProcedure_;
+		cmp  ecx, critter_p_proc;
+		je   skip;
+		cmp  ecx, timed_event_p_proc;
+		je   skip;
+		cmp  ecx, map_update_p_proc;
+		je   skip;
+		cmp  ecx, start;
+		jle  skip;
+		mov  edx, [esp + 0x28 - 0x18 + 4]; // script
+		push 0;                            // procTable
+		call StdProcedureHook_Script;      // ecx - numHandler
+skip:
+		retn;
+	}
+}
+
 void Inject_UseObjOnHook() {
 	const DWORD useObjOnHkAddr[] = {0x49C606, 0x473619};
 	HookCalls(UseObjOnHook, useObjOnHkAddr);
@@ -212,10 +282,20 @@ void Inject_DescriptionObjHook() {
 	HookCall(0x49AE28, DescriptionObjHook);
 }
 
+void Inject_ScriptProcedureHook() {
+	MakeCall(0x4A491F, ScriptStdProcedureHook);
+}
+
+void Inject_ScriptProcedureHook2() {
+	HookCall(0x4A49A7, After_ScriptStdProcedureHook);
+}
+
 void InitObjectHookScripts() {
 	HookScripts::LoadHookScript("hs_useobjon", HOOK_USEOBJON);
 	HookScripts::LoadHookScript("hs_useobj", HOOK_USEOBJ);
 	HookScripts::LoadHookScript("hs_descriptionobj", HOOK_DESCRIPTIONOBJ);
+	HookScripts::LoadHookScript("hs_stdprocedure", HOOK_STDPROCEDURE); // combo hook
+	HookScripts::LoadHookScript("hs_stdprocedure", HOOK_STDPROCEDURE_END);
 }
 
 }

sfall/Modules/HookScripts/ObjectHs.h

@@ -9,6 +9,8 @@ void Inject_UseObjOnHook();
 void Inject_UseObjHook();
 void Inject_UseAnimateObjHook();
 void Inject_DescriptionObjHook();
+void Inject_ScriptProcedureHook();
+void Inject_ScriptProcedureHook2();
 
 long UseObjOnHook_Invoke(fo::GameObject* source, fo::GameObject* item, fo::GameObject* target);
 

sfall/Modules/MiscPatches.cpp

@@ -45,7 +45,7 @@ static void __declspec(naked) GNW95_process_message_hack() {
 	__asm {
 		push idle;
 		call Sleep2;
-		cmp  ds:[FO_VAR_GNW95_isActive], 0;
+		cmp  dword ptr ds:[FO_VAR_GNW95_isActive], 0;
 		retn;
 	}
 }

sfall/Modules/Scripting/Handlers/Worldmap.cpp

@@ -73,7 +73,7 @@ static void __declspec(naked) wmRndEncounterOccurred_hack() {
 	__asm {
 		test ForceEncounterFlags, 0x1; // _NoCar flag
 		jnz  noCar;
-		cmp  ds:[FO_VAR_Move_on_Car], 0;
+		cmp  dword ptr ds:[FO_VAR_Move_on_Car], 0;
 		jz   noCar;
 		mov  edx, FO_VAR_carCurrentArea;
 		mov  eax, ForceEncounterMapID;