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VC: Corrected FBI Washington sirens sound

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Silent 2019-12-08 20:15:25 +01:00
parent de60ad587c
commit 3319f9df00
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1 changed files with 78 additions and 0 deletions
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78
SilentPatchVC/SilentPatchVC.cpp
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@ -14,6 +14,22 @@
#pragma comment(lib, "shlwapi.lib")
// ============= Mod compatibility stuff =============
namespace ModCompat
{
namespace Utils
{
template<typename AT>
HMODULE GetModuleHandleFromAddress( AT address )
{
HMODULE result = nullptr;
GetModuleHandleEx( GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT|GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS, LPCTSTR(address), &result );
return result;
}
}
}
struct RsGlobalType
{
const char* AppName;
@ -337,6 +353,31 @@ namespace Localization
}
}
// ============= Corrected FBI Washington sirens sound =============
namespace SirenSwitchingFix
{
void __declspec(naked) IsFBIRanchOrFBICar()
{
_asm
{
mov dword ptr [esi+1Ch], 1Ch
// al = 0 - high pitched siren
// al = 1 - normal siren
cmp dword ptr [ebp+14h], 90 // fbiranch
je IsFBIRanchOrFBICar_HighPitchSiren
cmp dword ptr [ebp+14h], 17 // fbicar
setne al
retn
IsFBIRanchOrFBICar_HighPitchSiren:
xor al, al
retn
}
}
}
void InjectDelayedPatches_VC_Common( bool bHasDebugMenu, const wchar_t* wcModulePath )
{
// Locale based metric/imperial system INI/debug menu
@ -844,6 +885,43 @@ void Patch_VC_Common()
Nop( constructStatLine.get<void>( -2 ), 2 );
}
// Corrected FBI Washington sirens sound
// Primary siren lower pitched like in FBI Rancher and secondary siren higher pitched
{
using namespace SirenSwitchingFix;
// Other mods might be touching it, so only patch specific vehicles if their code has not been touched at all
auto sirenPitch = pattern( "83 F8 17 74 32" ).count_hint(1);
if ( sirenPitch.size() == 1 )
{
auto match = sirenPitch.get_one();
InjectHook( match.get<void>( 5 ), IsFBIRanchOrFBICar, PATCH_CALL );
Patch( match.get<void>( 5 + 5 ), { 0x84, 0xC0 } ); // test al, al
Nop( match.get<void>( 5 + 5 + 2 ), 4 );
// Pitch shift FBI Washington primary siren
struct tVehicleSampleData {
int m_nAccelerationSampleIndex;
char m_bEngineSoundType;
int m_nHornSample;
int m_nHornFrequency;
char m_nSirenOrAlarmSample;
int m_nSirenOrAlarmFrequency;
char m_bDoorType;
};
tVehicleSampleData* dataTable = *get_pattern<tVehicleSampleData*>( "8B 04 95 ? ? ? ? 89 43 1C", 3 );
// Only pitch shift if table hasn't been relocated elsewhere
if ( GetModuleHandle( nullptr ) == ModCompat::Utils::GetModuleHandleFromAddress(dataTable) )
{
// fbicar frequency = fbiranch frequency
dataTable[17].m_nSirenOrAlarmFrequency = dataTable[90].m_nSirenOrAlarmFrequency;
}
}
}
}
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)