From f5c7d3ccc638d0b99d7b33a12a7c6e66548768ee Mon Sep 17 00:00:00 2001
From: NovaRain <novarain@gmail.com>
Date: Sun, 5 Jan 2025 21:03:12 +0800
Subject: [PATCH] Added setting about Night Vision perk to perks.ini

Updated version number.
---
 artifacts/config_files/Perks.ini         |  7 ++++++-
 sfall/Modules/SubModules/EnginePerks.cpp | 16 ++++++++++++++++
 sfall/version.h                          |  4 ++--
 3 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/artifacts/config_files/Perks.ini b/artifacts/config_files/Perks.ini
index 9cf3ca1eb..555760247 100644
--- a/artifacts/config_files/Perks.ini
+++ b/artifacts/config_files/Perks.ini
@@ -7,6 +7,10 @@
 ; be used to remove their hardcoded effects, and add new stat/skill effects
 
 [PerksTweak]
+;Changes the light level bonus for 'Night Vision' perk (ID 9)
+;valid range: 0..100, 20 - default bonus
+NightVisionBonus=20
+
 ;Changes the Outdoorsman skill bonus for 'Survivalist' perk (ID 16)
 ;125 - maximum bonus, 25 - default bonus
 SurvivalistBonus=25
@@ -77,8 +81,9 @@ GamblerBonus=20
 HarmlessBonus=20
 
 ;Changes the damage bonus and the Doctor skill bonus for 'Living Anatomy' perk (ID 97)
-;125 - maximum bonus, 5 - default bonus, 10 - default skill bonus
+;125 - maximum bonus, 5 - default damage bonus
 LivingAnatomyBonus=5
+;125 - maximum bonus, 10 - default skill bonus
 LivingAnatomyDoctorBonus=10
 
 ;Changes the Speech and Barter skill bonus for 'Negotiator' perk (ID 99)
diff --git a/sfall/Modules/SubModules/EnginePerks.cpp b/sfall/Modules/SubModules/EnginePerks.cpp
index b3b943a3d..f384b14f9 100644
--- a/sfall/Modules/SubModules/EnginePerks.cpp
+++ b/sfall/Modules/SubModules/EnginePerks.cpp
@@ -29,6 +29,7 @@ namespace perk
 
 static long SalesmanBonus = 20;
 static long DemolitionExpertBonus = 10;
+static long NightVisionBonus = 13107; // 20% of max light
 
 static bool TryGetModifiedInt(const char* key, int defaultValue, int& outValue, const char* perksFile) {
 	outValue = IniReader::GetInt("PerksTweak", key, defaultValue, perksFile);
@@ -75,10 +76,21 @@ static __declspec(naked) void queue_explode_exit_hack_demolition_expert() {
 	}
 }
 
+static __declspec(naked) void light_set_ambient_hack_night_vision() {
+	__asm {
+		imul eax, [NightVisionBonus];
+		pop  edx;
+		add  edx, 16; // skip code (to 0x47A932)
+		jmp  edx;
+	}
+}
+
 void EnginePerkBonusInit() {
 	// Allows the current perk level to affect the calculation of its bonus value
 	MakeCall(0x496F5E, perk_adjust_skill_hack_salesman);
 	MakeCall(0x4A289C, queue_explode_exit_hack_demolition_expert, 1);
+	// Allows customizable light level bonus
+	MakeCall(0x47A91D, light_set_ambient_hack_night_vision);
 }
 
 void ReadPerksBonuses(const char* perksFile) {
@@ -96,6 +108,10 @@ void ReadPerksBonuses(const char* perksFile) {
 		float floatValue = static_cast<float>(value);
 		SafeWrite32(0x474BB3, *(DWORD*)&floatValue); // write float data
 	}
+	if (TryGetModifiedInt("NightVisionBonus", 20, value, perksFile) && value >= 0) {
+		if (value > 100) value = 100;
+		NightVisionBonus = (65536 * value) / 100;
+	}
 	if (TryGetModifiedInt("SalesmanBonus", SalesmanBonus, value, perksFile) && value >= 0) {
 		SalesmanBonus = min(value, 999);
 	}
diff --git a/sfall/version.h b/sfall/version.h
index 93fddabff..3c54324ad 100644
--- a/sfall/version.h
+++ b/sfall/version.h
@@ -25,6 +25,6 @@
 #define VERSION_MAJOR 4
 #define VERSION_MINOR 4
 #define VERSION_BUILD 5
-#define VERSION_REV 1
+#define VERSION_REV 2
 
-#define VERSION_STRING "4.4.5.1"
+#define VERSION_STRING "4.4.5.2"