Enderal SE
https://mod.pub/enderal-se/38-enderal-se
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55 lines
1.4 KiB
55 lines
1.4 KiB
#include "Hooks_Camera.h"
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#include "GameCamera.h"
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#include "PapyrusEvents.h"
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#include "skse64_common/BranchTrampoline.h"
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#include "skse64_common/SafeWrite.h"
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#include "xbyak/xbyak.h"
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#include <queue>
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RelocAddr <uintptr_t> kInstallCameraHook_Base(0x0050F050);
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void InstallCameraHook(TESCameraState * oldState, TESCameraState * newState)
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{
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SKSECameraEvent evn(oldState, newState);
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g_cameraEventDispatcher.SendEvent(&evn);
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}
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void Hooks_Camera_Commit(void)
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{
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struct InstallHookCamera_Code : Xbyak::CodeGenerator {
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InstallHookCamera_Code(void * buf) : Xbyak::CodeGenerator(4096, buf)
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{
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Xbyak::Label origFunctionP5;
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push(r12);
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push(r13);
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sub(rsp, 0x28); // Remainder that stack must keep 16 bytes alignment or bad things will happen
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mov(r12, rcx);
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mov(r13, ptr[rcx + 0x28]);
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// Original code
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mov(ptr[rsp], rbx); // Using rsp+0 instead of rsp+8 of original instruction, because call will decrement rsp
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call(ptr[rip + origFunctionP5]);
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mov(rcx, r13); // oldState
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mov(rdx, ptr[r12 + 0x28]); // newState
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mov(rax, (uintptr_t)InstallCameraHook);
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call(rax);
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add(rsp, 0x28);
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pop(r13);
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pop(r12);
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ret();
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L(origFunctionP5);
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dq(kInstallCameraHook_Base.GetUIntPtr() + 0x5);
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}
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};
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void * codeBuf = g_localTrampoline.StartAlloc();
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InstallHookCamera_Code code(codeBuf);
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g_localTrampoline.EndAlloc(code.getCurr());
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g_branchTrampoline.Write5Branch(kInstallCameraHook_Base.GetUIntPtr(), uintptr_t(code.getCode()));
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}
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