From 4b934419bf6bab0403550a60c0215924f36d57db Mon Sep 17 00:00:00 2001
From: Silent <zdanio95@gmail.com>
Date: Tue, 12 Sep 2017 22:35:45 +0200
Subject: [PATCH] Proper metric-imperial conversion constants

---
 SilentPatchIII/SilentPatchIII.cpp | 13 +++++++++++++
 SilentPatchSA/SilentPatchSA.cpp   |  6 ++++++
 SilentPatchVC/SilentPatchVC.cpp   | 11 +++++++++++
 3 files changed, 30 insertions(+)

diff --git a/SilentPatchIII/SilentPatchIII.cpp b/SilentPatchIII/SilentPatchIII.cpp
index 3a1d537..717b051 100644
--- a/SilentPatchIII/SilentPatchIII.cpp
+++ b/SilentPatchIII/SilentPatchIII.cpp
@@ -813,6 +813,19 @@ void Patch_III_Common()
 		Patch<uint8_t>( addr.get<void>( 0x23 + 1 ), 6 );
 		Nop( addr.get<void>( 0x3F ), 7 );
 	}
+
+	// Proper metric-imperial conversion constants
+	{
+		static const float METERS_TO_MILES = 0.0006213711922f;
+		static const float METERS_TO_FEET = 3.280839895f;
+		auto addr = pattern( "D8 0D ? ? ? ? 6A 00 6A 01 D9 9C 24" ).count(4);
+		
+		Patch<const void*>( addr.get(0).get<void>( 2 ), &METERS_TO_MILES );
+		Patch<const void*>( addr.get(1).get<void>( 2 ), &METERS_TO_MILES );
+
+		Patch<const void*>( addr.get(2).get<void>( 2 ), &METERS_TO_FEET );
+		Patch<const void*>( addr.get(3).get<void>( 2 ), &METERS_TO_FEET );
+	}
 }
 
 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
diff --git a/SilentPatchSA/SilentPatchSA.cpp b/SilentPatchSA/SilentPatchSA.cpp
index fabacb2..d725484 100644
--- a/SilentPatchSA/SilentPatchSA.cpp
+++ b/SilentPatchSA/SilentPatchSA.cpp
@@ -3490,6 +3490,12 @@ void Patch_SA_10()
 
 	// Remove FILE_FLAG_NO_BUFFERING from CdStreams
 	Patch<uint8_t>( 0x406BC6, 0xEB );
+
+
+	// Proper metric-imperial conversion constants
+	static const float METERS_TO_FEET = 3.280839895f;
+	Patch<const void*>( 0x55942F + 2, &METERS_TO_FEET );
+	Patch<const void*>( 0x55AA96 + 2, &METERS_TO_FEET );
 }
 
 void Patch_SA_11()
diff --git a/SilentPatchVC/SilentPatchVC.cpp b/SilentPatchVC/SilentPatchVC.cpp
index 27c1eca..3b1e8f4 100644
--- a/SilentPatchVC/SilentPatchVC.cpp
+++ b/SilentPatchVC/SilentPatchVC.cpp
@@ -635,7 +635,18 @@ void Patch_VC_Common()
 		Nop( addr.get<void>( 0x18 + 7 ), 13 );
 
 		Nop( addr.get<void>( 0x33 ), 7 );
+	}
 
+	// Proper metric-imperial conversion constants
+	{
+		static const float METERS_TO_MILES = 0.0006213711922f;
+		auto addr = pattern( "75 ? D9 05 ? ? ? ? D8 0D ? ? ? ? 6A 00 6A 00 D9 9C 24" ).count(6);
+		addr.for_each_result( [&]( pattern_match match ) {
+			Patch<const void*>( match.get<void>( 0x8 + 2 ), &METERS_TO_MILES );
+		});
+
+		auto sum = get_pattern( "D9 9C 24 A8 00 00 00 8D 84 24 A8 00 00 00 50", -6 + 2 );
+		Patch<const void*>( sum, &METERS_TO_MILES );
 	}
 }