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Merge pull request #150 from Drahsid/lockon-fov
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Implement modifiable Lock-On FOV
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@Lyall
Lyall authored Oct 20, 2024
2 parents 66a6498 + 998fb95 commit cc95fd0
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Showing 2 changed files with 99 additions and 69 deletions.
3 changes: 3 additions & 0 deletions FFXVIFix.ini
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,9 @@ Enabled = true
; Add to gameplay vFOV in degrees. Default = 0 (Valid range: -40 to 140)
; I recommend a figure between 5 to 15 for a wider view.
AdditionalFOV = 0
; Add to gameplay (during lock-on) vFOV in degrees. Default = 0 (Valid range: -40 to 140)
; I recommend a figure between 5 to 15 for a wider view.
AdditionalFOVLockOn = 0
; Adjust character camera position horizontally.
; Above 0 has the character on the left, below 0 on the right. Centered = 0 , Default = 0.95 (Valid range: -5 to 5)
HorizontalPos = 0.95
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165 changes: 96 additions & 69 deletions src/dllmain.cpp
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Expand Up @@ -36,6 +36,7 @@ bool bFixMovies;
bool bAltFixMovies;
bool bFixFOV;
float fGameplayCamFOV;
float fLockonCamFOV;
float fGameplayCamHorPos;
float fGameplayCamVertPos;
float fGameplayCamDistMulti;
Expand Down Expand Up @@ -234,6 +235,7 @@ void Configuration()
inipp::get_value(ini.sections["Fix Movies"], "Alternative", bAltFixMovies);
inipp::get_value(ini.sections["Fix FOV"], "Enabled", bFixFOV);
inipp::get_value(ini.sections["Gameplay Camera"], "AdditionalFOV", fGameplayCamFOV);
inipp::get_value(ini.sections["Gameplay Camera"], "AdditionalFOVLockOn", fLockonCamFOV);
inipp::get_value(ini.sections["Gameplay Camera"], "HorizontalPos", fGameplayCamHorPos);
inipp::get_value(ini.sections["Gameplay Camera"], "VerticalPos", fGameplayCamVertPos);
inipp::get_value(ini.sections["Gameplay Camera"], "DistanceMultiplier", fGameplayCamDistMulti);
Expand Down Expand Up @@ -276,6 +278,11 @@ void Configuration()
spdlog::warn("Config Parse: fGameplayCamFOV value invalid, clamped to {}", fGameplayCamFOV);
}
spdlog::info("Config Parse: fGameplayCamFOV: {}", fGameplayCamFOV);
if (fLockonCamFOV < -40.00f || fLockonCamFOV > 140.00f) {
fLockonCamFOV = std::clamp(fLockonCamFOV, -40.00f, 140.00f);
spdlog::warn("Config Parse: fLockonCamFOV value invalid, clamped to {}", fLockonCamFOV);
}
spdlog::info("Config Parse: fLockonCamFOV: {}", fLockonCamFOV);
if (fGameplayCamHorPos < -5.00f || fGameplayCamHorPos > 5.00f) {
fGameplayCamHorPos = std::clamp(fGameplayCamHorPos, -5.00f, 5.00f);
spdlog::warn("Config Parse: fGameplayCamHorPos value invalid, clamped to {}", fGameplayCamHorPos);
Expand Down Expand Up @@ -825,84 +832,104 @@ void HUD()
}
}

static SafetyHookInline sLockOnFOVInlineHook{};

float LockOnFOVHook(void) {
const float DTOR = fPi / 180.0f;
float result = sLockOnFOVInlineHook.call<float>();
return std::clamp(result + (fLockonCamFOV * DTOR), 1.0f * DTOR, 179.0f * DTOR);
}

void Camera()
{
if (bFixFOV) {
// Fix <16:9 FOV
uint8_t* FOVScanResult = Memory::PatternScan(baseModule, "89 ?? ?? ?? ?? ?? 48 8B ?? ?? 48 8B ?? ?? C5 ?? ?? ?? ?? ?? ?? ?? 48 8B ?? 48 8B ?? FF 90 ?? ?? ?? ??");
if (FOVScanResult) {
spdlog::info("FOV: Address is {:s}+{:x}", sExeName.c_str(), (uintptr_t)FOVScanResult - (uintptr_t)baseModule);

static SafetyHookMid FOVMidHook{};
FOVMidHook = safetyhook::create_mid(FOVScanResult,
[](SafetyHookContext& ctx) {
// Fix cropped FOV when at <16:9
if (fAspectRatio < fNativeAspect) {
float fov = *reinterpret_cast<float*>(&ctx.rax);
fov = 2.0f * atanf(tanf(fov / 2.0f) * (fNativeAspect / fAspectRatio));
ctx.rax = *(uint32_t*)&fov;
}
});
}
else if (!FOVScanResult) {
spdlog::error("FOV: Pattern scan failed.");
}
}
if (bFixFOV) {
// Fix <16:9 FOV
uint8_t* FOVScanResult = Memory::PatternScan(baseModule, "89 ?? ?? ?? ?? ?? 48 8B ?? ?? 48 8B ?? ?? C5 ?? ?? ?? ?? ?? ?? ?? 48 8B ?? 48 8B ?? FF 90 ?? ?? ?? ??");
if (FOVScanResult) {
spdlog::info("FOV: Address is {:s}+{:x}", sExeName.c_str(), (uintptr_t)FOVScanResult - (uintptr_t)baseModule);

static SafetyHookMid FOVMidHook{};
FOVMidHook = safetyhook::create_mid(FOVScanResult,
[](SafetyHookContext& ctx) {
// Fix cropped FOV when at <16:9
if (fAspectRatio < fNativeAspect) {
float fov = *reinterpret_cast<float*>(&ctx.rax);
fov = 2.0f * atanf(tanf(fov / 2.0f) * (fNativeAspect / fAspectRatio));
ctx.rax = *(uint32_t*)&fov;
}
});
}
else if (!FOVScanResult) {
spdlog::error("FOV: Pattern scan failed.");
}
}

if (fGameplayCamFOV != 0.00f) {
// Gameplay FOV
uint8_t* GameplayFOVScanResult = Memory::PatternScan(baseModule, "48 8D ?? ?? ?? ?? ?? C3 C5 FA ?? ?? ?? ?? ?? 00 C5 FA ?? ?? ?? ?? ?? ?? C5 F2 ?? ?? ?? ?? ?? ?? C3");
if (GameplayFOVScanResult) {
spdlog::info("Gameplay Camera: FOV: Address is {:s}+{:x}", sExeName.c_str(), (uintptr_t)GameplayFOVScanResult - (uintptr_t)baseModule);
if (fGameplayCamFOV != 0.00f) {
// Gameplay FOV
uint8_t* GameplayFOVScanResult = Memory::PatternScan(baseModule, "48 8D ?? ?? ?? ?? ?? C3 C5 FA ?? ?? ?? ?? ?? 00 C5 FA ?? ?? ?? ?? ?? ?? C5 F2 ?? ?? ?? ?? ?? ?? C3");
if (GameplayFOVScanResult) {
spdlog::info("Gameplay Camera: FOV: Address is {:s}+{:x}", sExeName.c_str(), (uintptr_t)GameplayFOVScanResult - (uintptr_t)baseModule);

static SafetyHookMid GameplayFOVMidHook{};
GameplayFOVMidHook = safetyhook::create_mid(GameplayFOVScanResult + 0x10,
[](SafetyHookContext& ctx) {
ctx.xmm0.f32[0] += fGameplayCamFOV;
});
}
else if (!GameplayFOVScanResult) {
spdlog::error("Gameplay Camera: FOV: Pattern scan failed.");
}
}
static SafetyHookMid GameplayFOVMidHook{};
GameplayFOVMidHook = safetyhook::create_mid(GameplayFOVScanResult + 0x10,
[](SafetyHookContext& ctx) {
float fov = std::clamp(ctx.xmm0.f32[0] + fGameplayCamFOV, 1.0f, 179.0f);
ctx.xmm0.f32[0] = fov;
});
}
else if (!GameplayFOVScanResult) {
spdlog::error("Gameplay Camera: FOV: Pattern scan failed.");
}
}

if (fGameplayCamHorPos != 0.95f || fGameplayCamVertPos != -0.65f) {
// Gameplay Camera Position
uint8_t* GameplayCameraPosScanResult = Memory::PatternScan(baseModule, "C5 ?? ?? ?? ?? ?? ?? ?? 8B ?? 41 ?? ?? 48 8D ?? ?? E8 ?? ?? ?? ??");
if (GameplayCameraPosScanResult) {
spdlog::info("Gameplay Camera: Position: Address is {:s}+{:x}", sExeName.c_str(), (uintptr_t)GameplayCameraPosScanResult - (uintptr_t)baseModule);
if (fLockonCamFOV != 0.00f) {
uint8_t* LockOnFOVScanResult = Memory::PatternScan(baseModule, "c5 fa ?? ?? ?? ?? ?? ?? c3 cc cc cc 48 8b 42 ?? 48 89 41"); // a function that returns 0.6981317f from rodata, called from a function pointer at the sig 'ff 90 ?? ?? 00 00 c5 fa 11 47 ?? 48 8b 03 48 8b cb'
if (LockOnFOVScanResult) {
spdlog::info("Gameplay Camera: LockOn FOV: Address is {:s}+{:x}", sExeName.c_str(), (uintptr_t)LockOnFOVScanResult - (uintptr_t)baseModule);
sLockOnFOVInlineHook = safetyhook::create_inline(reinterpret_cast<void*>(LockOnFOVScanResult), LockOnFOVHook);
}
else if (!LockOnFOVScanResult) {
spdlog::error("Gameplay Camera: LockOn FOV: Pattern scan failed.");
}
}

static SafetyHookMid GameplayCameraHorPosMidHook{};
GameplayCameraHorPosMidHook = safetyhook::create_mid(GameplayCameraPosScanResult + 0x8,
[](SafetyHookContext& ctx) {
if (fGameplayCamHorPos != 0.95f)
ctx.xmm1.f32[0] = fGameplayCamHorPos;
if (fGameplayCamHorPos != 0.95f || fGameplayCamVertPos != -0.65f) {
// Gameplay Camera Position
uint8_t* GameplayCameraPosScanResult = Memory::PatternScan(baseModule, "C5 ?? ?? ?? ?? ?? ?? ?? 8B ?? 41 ?? ?? 48 8D ?? ?? E8 ?? ?? ?? ??");
if (GameplayCameraPosScanResult) {
spdlog::info("Gameplay Camera: Position: Address is {:s}+{:x}", sExeName.c_str(), (uintptr_t)GameplayCameraPosScanResult - (uintptr_t)baseModule);

if (fGameplayCamVertPos != -0.65f)
ctx.xmm2.f32[0] = fGameplayCamVertPos;
});
}
else if (!GameplayCameraPosScanResult) {
spdlog::error("Gameplay Camera: Position: Pattern scan failed.");
}
}
static SafetyHookMid GameplayCameraHorPosMidHook{};
GameplayCameraHorPosMidHook = safetyhook::create_mid(GameplayCameraPosScanResult + 0x8,
[](SafetyHookContext& ctx) {
if (fGameplayCamHorPos != 0.95f)
ctx.xmm1.f32[0] = fGameplayCamHorPos;

if (fGameplayCamVertPos != -0.65f)
ctx.xmm2.f32[0] = fGameplayCamVertPos;
});
}
else if (!GameplayCameraPosScanResult) {
spdlog::error("Gameplay Camera: Position: Pattern scan failed.");
}
}

if (fGameplayCamDistMulti != 1.00f) {
// Gameplay Camera Distance
uint8_t* GameplayCameraDistScanResult = Memory::PatternScan(baseModule, "C5 ?? ?? ?? ?? ?? ?? ?? 48 8D ?? ?? ?? ?? ?? 4C 8D ?? ?? ?? ?? ?? 48 8B ?? C4 ?? ?? ?? ?? E8 ?? ?? ?? ??");
if (GameplayCameraDistScanResult) {
spdlog::info("Gameplay Camera: Distance: Address is {:s}+{:x}", sExeName.c_str(), (uintptr_t)GameplayCameraDistScanResult - (uintptr_t)baseModule);
if (fGameplayCamDistMulti != 1.00f) {
// Gameplay Camera Distance
uint8_t* GameplayCameraDistScanResult = Memory::PatternScan(baseModule, "C5 ?? ?? ?? ?? ?? ?? ?? 48 8D ?? ?? ?? ?? ?? 4C 8D ?? ?? ?? ?? ?? 48 8B ?? C4 ?? ?? ?? ?? E8 ?? ?? ?? ??");
if (GameplayCameraDistScanResult) {
spdlog::info("Gameplay Camera: Distance: Address is {:s}+{:x}", sExeName.c_str(), (uintptr_t)GameplayCameraDistScanResult - (uintptr_t)baseModule);

static SafetyHookMid GameplayCameraDistMidHook{};
GameplayCameraDistMidHook = safetyhook::create_mid(GameplayCameraDistScanResult,
[](SafetyHookContext& ctx) {
ctx.xmm3.f32[0] *= fGameplayCamDistMulti;
});
}
else if (!GameplayCameraDistScanResult) {
spdlog::error("Gameplay Camera: Distance: Pattern scan failed.");
}
}
static SafetyHookMid GameplayCameraDistMidHook{};
GameplayCameraDistMidHook = safetyhook::create_mid(GameplayCameraDistScanResult,
[](SafetyHookContext& ctx) {
ctx.xmm3.f32[0] *= fGameplayCamDistMulti;
});
}
else if (!GameplayCameraDistScanResult) {
spdlog::error("Gameplay Camera: Distance: Pattern scan failed.");
}
}
}

void Framerate()
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