public static void PatchDisableMouseCapture(Stream bin, Sen2ExecutablePatchState state)
{
bool jp = state.IsJp;
// change function that captures the mouse cursor to not do that
bin.Position = state.Mapper.MapRamToRom(jp ? 0x581b0e : 0x581ece);
bin.WriteUInt8(0xeb); // jz -> jmp
// change function that handles camera movement to not react to mouse movement
// and not to fall back to WASD camera movement either (legacy code...?)
using (var branch = new BranchHelper4Byte(bin, state.Mapper)) {
bin.Position = state.Mapper.MapRamToRom(jp ? 0x4148b8 : 0x4148c8);
branch.WriteJump5Byte(0xe9);
bin.WriteUInt8(0x90); // nop
branch.SetTarget(jp ? 0x414a73u : 0x414a83u);
}
// remove call to ShowCursor(0)
bin.Position = state.Mapper.MapRamToRom(jp ? 0x6cfb3a : 0x6d0afa);
for (int i = 0; i < 8; ++i)
{
bin.WriteUInt8(0x90); // nop
}
// skip mouse movement processing function or something like that?
bin.Position = state.Mapper.MapRamToRom(jp ? 0x4154d2 : 0x4154e2);
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
}
public static void PatchDisableMouseCapture(Stream bin, Sen1ExecutablePatchState state)
{
bool jp = state.IsJp;
// change function that captures the mouse cursor to not do that
bin.Position = state.Mapper.MapRamToRom(jp ? 0x5de6c6 : 0x5df536);
bin.WriteUInt8(0xeb); // jz -> jmp
// change function that handles camera movement to not react to mouse movement
// and not to fall back to WASD camera movement either (legacy code...?)
using (var branch = new BranchHelper4Byte(bin, state.Mapper)) {
bin.Position = state.Mapper.MapRamToRom(jp ? 0x4464e5 : 0x446635);
branch.WriteJump5Byte(0xe9);
bin.WriteUInt8(0x90); // nop
branch.SetTarget(jp ? 0x44667au : 0x4467cau);
}
// there's a third function at 0x53c766 that seems involved here, but leaving it alone seems to work just fine...
// remove call to ShowCursor(0)
bin.Position = state.Mapper.MapRamToRom(jp ? 0x7be0ea : 0x7bf9ba);
for (int i = 0; i < 8; ++i)
{
bin.WriteUInt8(0x90); // nop
}
// skip mouse movement processing function or something like that?
bin.Position = state.Mapper.MapRamToRom(jp ? 0x446e3a : 0x446f8a);
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
}
public static void PatchMusicQueueing(Stream binary, Sen2ExecutablePatchState state)
{
var mapper = state.Mapper;
var a = state.BgmTimingPatchLocations;
state.InitCodeSpaceIfNeeded(binary);
using (BranchHelper4Byte lock_mutex = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte unlock_mutex = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte set_dirty_and_write_sound_queue_4bytes = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte clear_dirty_if_queue_empty = new BranchHelper4Byte(binary, mapper))
using (BranchHelper1Byte queue_not_empty = new BranchHelper1Byte(binary, mapper))
using (BranchHelper4Byte queue_empty_jump_back = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte check_if_should_enqueue = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte back_to_function = new BranchHelper4Byte(binary, mapper))
using (BranchHelper1Byte check_done_return_0 = new BranchHelper1Byte(binary, mapper))
using (BranchHelper1Byte check_done = new BranchHelper1Byte(binary, mapper))
using (BranchHelper4Byte write_sound_queue_4bytes = new BranchHelper4Byte(binary, mapper)) {
EndianUtils.Endianness be = EndianUtils.Endianness.BigEndian;
EndianUtils.Endianness le = EndianUtils.Endianness.LittleEndian;
Stream _ = binary;
// end of the uninitialized .data section, right before .rsrc, should be unused
// TODO: where is the actual information about the location/length of that section stored...?
uint address_of_dirty_flag = a.AddressOfDirtyFlag;
uint address_of_overwritable_write_sound_queue_4bytes_0x5 = a.AddressOfOverwritableWriteSoundQueue4bytes_0x5;
uint address_of_overwritable_write_sound_queue_4bytes_0x6 = a.AddressOfOverwritableWriteSoundQueue4bytes_0x6;
uint address_write_sound_queue_4bytes = a.AddressWriteSoundQueue4bytes;
uint end_of_sound_queue_processing = a.EndOfSoundQueueProcessing;
uint address_of_is_playing_check_injection = a.AddressOfIsPlayingCheckInjection;
write_sound_queue_4bytes.SetTarget(address_write_sound_queue_4bytes);
lock_mutex.SetTarget(a.LockMutex);
unlock_mutex.SetTarget(a.UnlockMutex);
// set dirty flag when a BGM switch or stop is enqueued into the sound queue
{
_.Position = (long)mapper.MapRamToRom(state.RegionD.Address);
set_dirty_and_write_sound_queue_4bytes.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt8(0xb8); // mov eax,(address of dirty flag)
_.WriteUInt32(address_of_dirty_flag, le);
_.WriteUInt24(0xc60001, be); // mov byte ptr[eax],1
write_sound_queue_4bytes.WriteJump5Byte(0xe9); // jmp write_sound_queue_4bytes
state.RegionD.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Queueing: Set dirty flag");
}
{
_.Position = (long)mapper.MapRamToRom(address_of_overwritable_write_sound_queue_4bytes_0x5);
set_dirty_and_write_sound_queue_4bytes.WriteJump5Byte(0xe8);
}
{
_.Position = (long)mapper.MapRamToRom(address_of_overwritable_write_sound_queue_4bytes_0x6);
set_dirty_and_write_sound_queue_4bytes.WriteJump5Byte(0xe8);
}
// clear dirty flag after sound queue is processed if queue is still empty
// this is... very much a heuristic, but should be *good enough* hopefully
{
_.Position = (long)mapper.MapRamToRom(end_of_sound_queue_processing);
ulong tmp = _.PeekUInt48(le); // remember instruction here so we can reinsert it later
clear_dirty_if_queue_empty.WriteJump5Byte(0xe9);
_.WriteUInt8(0x90); // nop rest of instruction for safety, though shouldn't matter
queue_empty_jump_back.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.Position = (long)mapper.MapRamToRom(state.Region50a.Address);
clear_dirty_if_queue_empty.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt48(0x8bb56cffffff, be); // mov esi,dword ptr [ebp-94h]
_.WriteUInt24(0x8d4e44, be); // lea ecx,[esi+44h]
lock_mutex.WriteJump5Byte(0xe8); // call lock_mutex
_.WriteUInt32(0x837e6c00, be); // cmp dword ptr [esi+6Ch],0
queue_not_empty.WriteJump(0x75); // jne queue_not_empty
_.WriteUInt8(0xb9); // mov ecx,(address of dirty flag)
_.WriteUInt32(address_of_dirty_flag, le);
_.WriteUInt24(0xc60100, be); // mov byte ptr[ecx],0
queue_not_empty.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt24(0x8d4e44, be); // lea ecx,[esi+44h]
unlock_mutex.WriteJump5Byte(0xe8); // call unlock_mutex
_.WriteUInt48(tmp, le); // reinsert instruction we overwrote
queue_empty_jump_back.WriteJump5Byte(0xe9); // jmp queue_empty_jump_back
state.Region50a.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Queueing: Clear dirty flag");
}
// patch the logic for when to skip enqueueing a bgm
{
_.Position = (long)mapper.MapRamToRom(address_of_is_playing_check_injection);
check_if_should_enqueue.WriteJump5Byte(0xe9);
for (int i = 0; i < 5; ++i)
{
_.WriteUInt8(0x90); // clear instructions we no longer want here
}
back_to_function.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.Position = (long)mapper.MapRamToRom(state.Region60.Address);
check_if_should_enqueue.SetTarget(mapper.MapRomToRam((ulong)_.Position));
// load dirty flag
_.WriteUInt24(0x8d4e44, be); // lea ecx,[esi+44h]
lock_mutex.WriteJump5Byte(0xe8); // call lock_mutex
_.WriteUInt8(0xb8); // mov eax,(address of dirty flag)
_.WriteUInt32(address_of_dirty_flag, le);
_.WriteUInt16(0x8a00, be); // mov al,byte ptr[eax]
_.WriteUInt16(0x8bf8, be); // mov edi,eax
_.WriteUInt24(0x8d4e44, be); // lea ecx,[esi+44h]
unlock_mutex.WriteJump5Byte(0xe8); // call unlock_mutex
// lock on bgm state
_.WriteUInt24(0x8d4e40, be); // lea ecx,[esi+40h]
lock_mutex.WriteJump5Byte(0xe8); // call lock_mutex
// check is_playing_bgm()
_.WriteUInt16(0x8b06, be); // mov eax,dword ptr[esi]
_.WriteUInt48(0x8b8094000000, be); // mov eax,dword ptr[eax+94h]
_.WriteUInt16(0x8bce, be); // mov ecx,esi
_.WriteUInt16(0xffd0, be); // call eax ; al is now 1 when bgm is playing, 0 if not
_.WriteUInt16(0x84c0, be); // test al,al
check_done.WriteJump(0x74); // je check_done ; if !is_playing_bgm() we're already done; this returns 0
// check dirty flag
_.WriteUInt16(0x8bc7, be); // mov eax,edi
_.WriteUInt16(0x84c0, be); // test al,al ; al is now 1 when dirty, 0 if not
check_done_return_0.WriteJump(0x75); // jne check_done_return_0 ; if dirty return 0
// check bgm_is_fading()
_.WriteUInt24(0x8b4614, be); // mov eax,dword ptr[esi+14h]
_.WriteUInt16(0x8b00, be); // mov eax,dword ptr[eax] ; eax is now pointing at the bgm sound channel
_.WriteUInt24(0x8a4038, be); // mov al,byte ptr[eax+38h] ; al is now 1 when fade is active, 0 if not
_.WriteUInt16(0x84c0, be); // test al,al
check_done_return_0.WriteJump(0x75); // jne check_done_return_0 ; if it's fading out return 0
_.WriteUInt8(0x40); // inc eax
check_done.WriteJump(0xeb); // jmp check_done ; otherwise return 1
check_done_return_0.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt16(0x33c0, be); // xor eax,eax
check_done.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt16(0x8bf8, be); // mov edi,eax
_.WriteUInt24(0x8d4e40, be); // lea ecx,[esi+40h]
unlock_mutex.WriteJump5Byte(0xe8); // call unlock_mutex
_.WriteUInt16(0x8bc7, be); // mov eax,edi
_.WriteUInt16(0x8bce, be); // mov ecx,esi ; restore ecx (probably unnecessary)
_.WriteUInt16(0x8b3e, be); // mov edi,dword ptr[esi] ; restore edi
back_to_function.WriteJump5Byte(0xe9); // jmp back_to_function
state.Region60.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Queueing: Check if want to enqueue");
}
// some old notes:
// 0x8eda84 -> FSound vftable
// 0x8ed0b4 -> FSoundBase vftable
// 0x8eda10 -> FSoundChannelController vftable
// 0x8ed268 -> FSoundBank vftable
// FSound data structure:
// +0x00 vftableptr
// +0x04 ?
// +0x08 length of 1st FSoundChannelController* array
// +0x0C pointer to 1st FSoundChannelController* array
// +0x10 length of 2nd FSoundChannelController* array
// +0x14 pointer to 2nd FSoundChannelController* array
// +0x40 mutex handle for the bgm FSoundChannelController (?)
// +0x44 mutex handle for locking the sound queue (?)
// +0x5C base address of sound queue (ringbuffer?)
// +0x60 size of sound queue
// +0x64 write offset in sound queue (?)
// +0x68 read offset in sound queue (?)
// +0x6C bytes used in sound queue
// always jump the disallow-enqueue-while-same-track-playing branch
// if we need a safer test, *(int*)(*(((int*)edi)+5)) in function at 0x41F846 (which is the currently-playing-bgm check, called at 0x57c803)
// seems to give us the pointer to the data structure containing the current volume/fade info of the bgm
// which seems to be:
// +0x00 ptr: FSoundChannelController::vftable
// +0x04 ptr: FSound
// +0x08 ptr: FSoundData
// +0x0c ?
// +0x10 ptr: FSoundStreamParamsWin32
// +0x14 ?
// +0x18 ?
// +0x1C float: ?
// +0x20 float: current volume
// +0x24 float: fade start factor
// +0x28 float: fade end factor
// +0x2C float: target fade time in seconds
// +0x30 float: current fade time in seconds
// +0x34 float?: ?
// +0x38 byte: fade out is active?
// +0x4D byte: channel is active?
// (compare the fade adjustment function at 0x421da0, which is pretty clear)
// so we could inject a test for this at 0x57c80f to allow fades if and only if bgm is currently fading out
// by checking (current fade time < target fade time) && fade end factor == 0.0f
// or just the flag at 0x38, which seems to indicate that the track should be stopped (either after a fade or immediately)
// but this doesn't actually seem to be necessary, as far as I can tell?
// still, figured I'd note this here in case it ends up being useful
// _.Position = (long)mapper.MapRamToRom(a.BgmAlreadyPlayingJump);
// _.WriteUInt8(0xeb);
}
}
public void InitCodeSpaceIfNeeded(Stream binary)
{
InitCodeSpaceScriptCompilerDummyIfNeeded(binary);
if (Region50a != null)
{
// already initialized
return;
}
var mapper = Mapper;
var c = CodeSpaceLocations;
// make some free space to actually put our expanded code in
// note that there's a few more functions around here that the same logic could be applied to for even more space if we need it
// (though I think I found the biggest blocks already, hard to tell)
using (var b = new BranchHelper4Byte(binary, mapper)) {
// inject a jmp 0x4219cb, as that target has the same function tail as this one, so we can get us 0x50 bytes of free space
long source = c.Region50aAddress;
binary.Position = (long)mapper.MapRamToRom((ulong)source);
b.SetTarget(c.Region50aTarget);
b.WriteJump5Byte(0xe9);
Region50a = new RegionHelper((uint)mapper.MapRomToRam((ulong)binary.Position), c.Region50aLength, "Region50a");
for (uint i = 0; i < c.Region50aLength; ++i)
{
binary.WriteUInt8(0xcc);
}
}
using (var b = new BranchHelper4Byte(binary, mapper)) {
// same here
long source = c.Region50bAddress;
binary.Position = (long)mapper.MapRamToRom((ulong)source);
b.SetTarget(c.Region50bTarget);
b.WriteJump5Byte(0xe9);
Region50b = new RegionHelper((uint)mapper.MapRomToRam((ulong)binary.Position), c.Region50bLength, "Region50b");
for (uint i = 0; i < c.Region50bLength; ++i)
{
binary.WriteUInt8(0xcc);
}
}
using (var b = new BranchHelper4Byte(binary, mapper)) {
// same logic, different target, this gives us 0x60 bytes
long source = c.Region60Address;
binary.Position = (long)mapper.MapRamToRom((ulong)source);
b.SetTarget(c.Region60Target);
b.WriteJump5Byte(0xe9);
Region60 = new RegionHelper((uint)mapper.MapRomToRam((ulong)binary.Position), c.Region60Length, "Region60");
for (uint i = 0; i < c.Region60Length; ++i)
{
binary.WriteUInt8(0xcc);
}
}
using (var b = new BranchHelper4Byte(binary, mapper)) {
// and one more for 0x51 bytes
long source = c.Region51Address;
binary.Position = (long)mapper.MapRamToRom((ulong)source);
b.SetTarget(c.Region51Target);
b.WriteJump5Byte(0xe9);
Region51 = new RegionHelper((uint)mapper.MapRomToRam((ulong)binary.Position), c.Region51Length, "Region51");
for (uint i = 0; i < c.Region51Length; ++i)
{
binary.WriteUInt8(0xcc);
}
}
using (var b = new BranchHelper4Byte(binary, mapper)) {
long source = c.Region41Address;
binary.Position = (long)mapper.MapRamToRom((ulong)source);
b.SetTarget(c.Region41Target);
b.WriteJump5Byte(0xe9);
Region41 = new RegionHelper((uint)mapper.MapRomToRam((ulong)binary.Position), c.Region41Length, "Region41");
for (uint i = 0; i < c.Region41Length; ++i)
{
binary.WriteUInt8(0xcc);
}
}
using (var b = new BranchHelper4Byte(binary, mapper)) {
long source = c.Region32Address;
binary.Position = (long)mapper.MapRamToRom((ulong)source);
b.SetTarget(c.Region32Target);
b.WriteJump5Byte(0xe9);
Region32 = new RegionHelper((uint)mapper.MapRomToRam((ulong)binary.Position), c.Region32Length, "Region32");
for (uint i = 0; i < c.Region32Length; ++i)
{
binary.WriteUInt8(0xcc);
}
}
{
// this one is just a between-function padding, but good enough for a small snippet
RegionD = new RegionHelper(c.RegionDAddress, c.RegionDLength, "RegionD");
}
}
public static void PatchMusicFadeTiming(Stream binary, Sen2ExecutablePatchState state, uint divisor)
{
var mapper = state.Mapper;
var a = state.BgmTimingPatchLocations;
// divisor of 1000 seems to be console-accurate, but making fades a little faster actually feels nicer with the fast PC loading times
state.InitCodeSpaceIfNeeded(binary);
RegionHelper region50b = state.Region50b;
RegionHelper region51 = state.Region51;
RegionHelper regionEntryPoint = null;
RegionHelper region80 = null;
using (BranchHelper4Byte alldvrm = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte allmul = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte do_compare = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte invoke_sleep_milliseconds = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte lock_mutex = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte invoke_query_performance_counter = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte invoke_query_performance_frequency = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte process_sound_queue = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte unlock_mutex = new BranchHelper4Byte(binary, mapper))
using (BranchHelper1Byte do_compare_end = new BranchHelper1Byte(binary, mapper))
using (BranchHelper1Byte fail = new BranchHelper1Byte(binary, mapper))
using (BranchHelper1Byte success = new BranchHelper1Byte(binary, mapper))
using (BranchHelper4Byte early_exit = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte exit_inner_loop = new BranchHelper4Byte(binary, mapper))
using (BranchHelper1Byte go_to_sleep_maybe = new BranchHelper1Byte(binary, mapper))
using (BranchHelper1Byte go_to_next_iteration = new BranchHelper1Byte(binary, mapper))
using (BranchHelper4Byte inner_loop = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte outer_loop_init = new BranchHelper4Byte(binary, mapper))
using (BranchHelper1Byte outer_loop = new BranchHelper1Byte(binary, mapper))
using (BranchHelper1Byte post_every_33_iterations = new BranchHelper1Byte(binary, mapper))
using (BranchHelper4Byte remainder_increment = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte thread_mainloop_continue = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte time_pass_loop_4byte = new BranchHelper4Byte(binary, mapper))
using (BranchHelper1Byte time_pass_loop_1byte = new BranchHelper1Byte(binary, mapper))
using (BranchHelper1Byte exit_remainder_increment = new BranchHelper1Byte(binary, mapper))
using (BranchHelper4Byte thread_mainloop = new BranchHelper4Byte(binary, mapper)) {
{
// this is the entry point of the function we're replacing, clear it out
binary.Position = (long)mapper.MapRamToRom((ulong)a.ThreadEntryPointAddress);
for (uint i = 0; i < a.ThreadEntryPointLength; ++i)
{
binary.WriteUInt8(0xcc);
}
regionEntryPoint = new RegionHelper(a.ThreadEntryPointAddress, a.ThreadEntryPointLength, "Timing Thread Entry Point");
}
{
// this is the body of the function we're replacing, clear it out
// don't ask me why this is split up like this
binary.Position = (long)mapper.MapRamToRom((ulong)a.ThreadFunctionBodyAddress);
for (uint i = 0; i < a.ThreadFunctionBodyLength; ++i)
{
binary.WriteUInt8(0xcc);
}
region80 = new RegionHelper(a.ThreadFunctionBodyAddress, a.ThreadFunctionBodyLength, "Timing Thread Body");
}
EndianUtils.Endianness be = EndianUtils.Endianness.BigEndian;
EndianUtils.Endianness le = EndianUtils.Endianness.LittleEndian;
// and assemble!
Stream _ = binary;
{
_.Position = (long)mapper.MapRamToRom(regionEntryPoint.Address);
_.WriteUInt8(0x55); // push ebp
_.WriteUInt16(0x8bec, be); // mov ebp,esp
_.WriteUInt24(0x83ec7c, be); // sub esp,7Ch
_.WriteUInt24(0x8b4d08, be); // mov ecx,dword ptr [ebp+8]
_.WriteUInt8(0x57); // push edi
_.WriteUInt8(0x56); // push esi
thread_mainloop.WriteJump5Byte(0xe9); // jmp thread_mainloop
regionEntryPoint.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Timing: Thread Entry");
}
{
_.Position = (long)mapper.MapRamToRom(state.Region41.Address);
remainder_increment.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt24(0x8b45bc, be); // mov eax,dword ptr [ebp-44h] ; load counter into eax
_.WriteUInt16(0x03c2, be); // add eax,edx ; counter += ticks_per_loop_remainder
_.WriteUInt24(0x8b55c8, be); // mov edx,dword ptr [ebp-38h] ; edx = original_divisor
_.WriteUInt16(0x3bc2, be); // cmp eax,edx ; if counter >= original_divisor
exit_remainder_increment.WriteJump(0x72); // jb exit_remainder_increment
_.WriteUInt32(0x8345f001, be); // add dword ptr [ebp-10h],1 ; ++ticks_last
_.WriteUInt32(0x8355f400, be); // adc dword ptr [ebp-0Ch],0
_.WriteUInt16(0x2bc2, be); // sub eax,edx ; counter -= original_divisor
exit_remainder_increment.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt24(0x8945bc, be); // mov dword ptr [ebp-44h],eax ; write counter back to stack
time_pass_loop_4byte.WriteJump5Byte(0xe9); // jmp time_pass_loop
state.Region41.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Timing: Remainder Increment");
}
{
_.Position = (long)mapper.MapRamToRom(state.Region41.Address);
thread_mainloop.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt8(0x53); // push ebx
_.WriteUInt16(0x8bf9, be); // mov edi,ecx
_.WriteUInt16(0x33f6, be); // xor esi,esi
_.WriteUInt56(0xf74710ffffff7f, be); // test dword ptr [edi+10h],7FFFFFFFh
early_exit.WriteJump6Byte(0x0f84); // je early_exit
_.WriteUInt24(0x8d45d8, be); // lea eax,[ebp-28h]
invoke_query_performance_frequency.WriteJump5Byte(0xe8); // call invoke_query_performance_frequency
thread_mainloop_continue.WriteJump5Byte(0xe9); // jmp thread_mainloop_continue
state.Region41.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Timing: Thread Init 1");
}
{
_.Position = (long)mapper.MapRamToRom(region51.Address);
thread_mainloop_continue.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt8(0xb8); // mov eax,(divisor)
_.WriteUInt32(divisor, le);
_.WriteUInt24(0x8945c8, be); // mov dword ptr [ebp-38h],eax
_.WriteUInt16(0x6a00, be); // push 0
_.WriteUInt8(0x50); // push eax
_.WriteUInt24(0x8b45dc, be); // mov eax,dword ptr [ebp-24h]
_.WriteUInt24(0x8b55d8, be); // mov edx,dword ptr [ebp-28h]
_.WriteUInt8(0x50); // push eax
_.WriteUInt8(0x52); // push edx
alldvrm.WriteJump5Byte(0xe8); // call _alldvrm
_.WriteUInt24(0x8945e0, be); // mov dword ptr [ebp-20h],eax
_.WriteUInt24(0x8955e4, be); // mov dword ptr [ebp-1Ch],edx
_.WriteUInt24(0x894dc0, be); // mov dword ptr [ebp-40h],ecx
_.WriteUInt24(0x8b45dc, be); // mov eax,dword ptr [ebp-24h]
_.WriteUInt24(0x8b55d8, be); // mov edx,dword ptr [ebp-28h]
_.WriteUInt16(0x6a00, be); // push 0
_.WriteUInt16(0x6a05, be); // push 5
_.WriteUInt8(0x50); // push eax
_.WriteUInt8(0x52); // push edx
allmul.WriteJump5Byte(0xe8); // call _allmul
_.WriteUInt24(0x8945d0, be); // mov dword ptr [ebp-30h],eax
_.WriteUInt24(0x8955d4, be); // mov dword ptr [ebp-2Ch],edx
_.WriteUInt24(0x8d45f0, be); // lea eax,[ebp-10h]
invoke_query_performance_counter.WriteJump5Byte(0xe8); // call invoke_query_performance_counter
_.WriteUInt32(0x807f5400, be); // cmp byte ptr [edi+54h],0
early_exit.WriteJump6Byte(0x0f85); // jne early_exit
outer_loop_init.WriteJump5Byte(0xe9); // jmp outer_loop_init
region51.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Timing: Thread Init 2");
}
{
_.Position = (long)mapper.MapRamToRom(region80.Address);
outer_loop_init.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt56(0xc745bc00000000, be); // mov dword ptr [ebp-44h],0
outer_loop.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt16(0x33db, be); // xor ebx,ebx
_.WriteUInt24(0x8d45e8, be); // lea eax,[ebp-18h]
invoke_query_performance_counter.WriteJump5Byte(0xe8); // call invoke_query_performance_counter
_.WriteUInt24(0x8d45e8, be); // lea eax,[ebp-18h] ; ticks_now
_.WriteUInt24(0x8d55d0, be); // lea edx,[ebp-30h] ; ticks_for_reset
_.WriteUInt24(0x8d4df0, be); // lea ecx,[ebp-10h] ; ticks_last
do_compare.WriteJump5Byte(0xe8); // call do_compare
_.WriteUInt16(0x85c0, be); // test eax,eax
time_pass_loop_1byte.WriteJump(0x74); // je time_pass_loop
_.WriteUInt24(0x8b45e8, be); // mov eax,dword ptr [ebp-18h]
_.WriteUInt24(0x8945f0, be); // mov dword ptr [ebp-10h],eax
_.WriteUInt24(0x8b45ec, be); // mov eax,dword ptr [ebp-14h]
_.WriteUInt24(0x8945f4, be); // mov dword ptr [ebp-0Ch],eax
time_pass_loop_1byte.SetTarget(mapper.MapRomToRam((ulong)_.Position));
time_pass_loop_4byte.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt24(0x8d45e8, be); // lea eax,[ebp-18h] ; ticks_now
_.WriteUInt24(0x8d55e0, be); // lea edx,[ebp-20h] ; ticks_per_loop
_.WriteUInt24(0x8d4df0, be); // lea ecx,[ebp-10h] ; ticks_last
do_compare.WriteJump5Byte(0xe8); // call do_compare
_.WriteUInt16(0x85c0, be); // test eax,eax
go_to_sleep_maybe.WriteJump(0x74); // je go_to_sleep_maybe
inner_loop.WriteJump5Byte(0xe9); // jmp inner_loop
exit_inner_loop.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt24(0x8b45e0, be); // mov eax,dword ptr [ebp-20h] ; ticks_per_loop
_.WriteUInt24(0x8b4de4, be); // mov ecx,dword ptr [ebp-1Ch]
_.WriteUInt24(0x0145f0, be); // add dword ptr [ebp-10h],eax ; ticks_last
_.WriteUInt24(0x114df4, be); // adc dword ptr [ebp-0Ch],ecx
_.WriteUInt24(0x8b55c0, be); // mov edx,dword ptr [ebp-40h] ; ticks_per_loop_remainder
_.WriteUInt16(0x85d2, be); // test edx,edx
time_pass_loop_1byte.WriteJump(0x74); // je time_pass_loop ; no remainder, just go back to loop
remainder_increment.WriteJump5Byte(0xe9); // jmp remainder_increment
go_to_sleep_maybe.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt16(0x85db, be); // test ebx,ebx
go_to_next_iteration.WriteJump(0x75); // jne go_to_next_iteration
_.WriteUInt16(0x6a00, be); // push 0
invoke_sleep_milliseconds.WriteJump5Byte(0xe8); // call invoke_sleep_milliseconds
_.WriteUInt24(0x83c404, be); // add esp,4
go_to_next_iteration.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt32(0x807f5400, be); // cmp byte ptr [edi+54h],0
outer_loop.WriteJump(0x74); // je outer_loop
early_exit.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt8(0x5b); // pop ebx
_.WriteUInt8(0x5e); // pop esi
_.WriteUInt16(0x33c0, be); // xor eax,eax
_.WriteUInt8(0x5f); // pop edi
_.WriteUInt16(0x8be5, be); // mov esp,ebp
_.WriteUInt8(0x5d); // pop ebp
_.WriteUInt8(0xc3); // ret
region80.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Timing: Outer Loop");
}
{
_.Position = (long)mapper.MapRamToRom(region50b.Address);
inner_loop.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt40(0xbb01000000, be); // mov ebx,1 ; remember that we've executed an inner_loop
_.WriteUInt24(0x8d4f38, be); // lea ecx,[edi+38h]
lock_mutex.WriteJump5Byte(0xe8); // call lock_mutex
_.WriteUInt16(0x8bcf, be); // mov ecx,edi
process_sound_queue.WriteJump5Byte(0xe8); // call unknown_func
_.WriteUInt24(0x83fe21, be); // cmp esi,21h
post_every_33_iterations.WriteJump(0x72); // jb post_every_33_iterations
_.WriteUInt32(0x660f6ec6, be); // movd xmm0,esi
_.WriteUInt24(0x0f5bc0, be); // cvtdq2ps xmm0,xmm0
_.WriteUInt16(0x8b17, be); // mov edx,dword ptr [edi]
_.WriteUInt8(0x51); // push ecx
_.WriteUInt16(0x8bcf, be); // mov ecx,edi
_.WriteUInt32(0xf30f5e05, be); // divss xmm0,dword ptr ds:[8ED254h]
_.WriteUInt32(a.InnerLoopDivss, le);
_.WriteUInt40(0xf30f594758, be); // mulss xmm0,dword ptr [edi+58h]
_.WriteUInt40(0xf30f110424, be); // movss dword ptr [esp],xmm0
_.WriteUInt24(0xff5268, be); // call dword ptr [edx+68h]
_.WriteUInt24(0x83ee21, be); // sub esi,21h
post_every_33_iterations.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt24(0x8d4f38, be); // lea ecx,[edi+38h]
unlock_mutex.WriteJump5Byte(0xe8); // call unlock_mutex
_.WriteUInt8(0x46); // inc esi
exit_inner_loop.WriteJump5Byte(0xe9); // jmp exit_inner_loop
region50b.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Timing: Inner Loop");
}
{
_.Position = (long)mapper.MapRamToRom(state.RegionD.Address);
invoke_query_performance_frequency.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt8(0x50); // push eax
_.WriteUInt16(0xff15, be); // call dword ptr[QueryPerformanceFrequency]
_.WriteUInt32(a.QueryPerformanceFrequency);
_.WriteUInt8(0xc3); // ret
state.RegionD.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Timing: QueryPerformanceFrequency");
}
{
_.Position = (long)mapper.MapRamToRom(state.Region32.Address);
invoke_query_performance_counter.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt8(0x50); // push eax
_.WriteUInt16(0xff15, be); // call dword ptr[QueryPerformanceCounter]
_.WriteUInt32(a.QueryPerformanceCounter);
_.WriteUInt8(0xc3); // ret
state.Region32.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Timing: QueryPerformanceCounter");
}
{
_.Position = (long)mapper.MapRamToRom(state.Region32.Address);
do_compare.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt8(0x53); // push ebx
_.WriteUInt16(0x8bd8, be); // mov ebx,eax
_.WriteUInt24(0x8b4104, be); // mov eax,dword ptr [ecx+4]
_.WriteUInt8(0x56); // push esi
_.WriteUInt16(0x8b31, be); // mov esi,dword ptr [ecx]
_.WriteUInt16(0x0332, be); // add esi,dword ptr [edx]
_.WriteUInt16(0x8bcb, be); // mov ecx,ebx
_.WriteUInt24(0x134204, be); // adc eax,dword ptr [edx+4]
_.WriteUInt24(0x3b4104, be); // cmp eax,dword ptr [ecx+4]
success.WriteJump(0x7f); // jg success
fail.WriteJump(0x7c); // jl fail
_.WriteUInt16(0x3b31, be); // cmp esi,dword ptr [ecx]
success.WriteJump(0x73); // jae success
fail.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt40(0xb801000000, be); // mov eax,1
do_compare_end.WriteJump(0xeb); // jmp do_compare_end
success.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt16(0x33c0, be); // xor eax,eax
do_compare_end.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt8(0x5e); // pop esi
_.WriteUInt8(0x5b); // pop ebx
_.WriteUInt8(0xc3); // ret
state.Region32.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Timing: do_compare");
}
lock_mutex.SetTarget(a.LockMutex);
unlock_mutex.SetTarget(a.UnlockMutex);
invoke_sleep_milliseconds.SetTarget(a.InvokeSleepMilliseconds);
process_sound_queue.SetTarget(a.ProcessSoundQueue);
allmul.SetTarget(a.AllMul);
alldvrm.SetTarget(a.AllDvRm);
// patch the bizarre and apparently intentional behavior that messes with the music timing when left shift or left ctrl are held
_.Position = (long)mapper.MapRamToRom(a.MultiplierWhenLCrtlHeld);
_.WriteUInt32(0x3f800000, le);
_.Position = (long)mapper.MapRamToRom(a.MultiplierWhenLShiftHeld);
_.WriteUInt32(0x3f800000, le);
}
}
public static void PatchDisablePauseOnFocusLoss(Stream bin, Sen2ExecutablePatchState state)
{
bool jp = state.IsJp;
// change dinput keyboard SetCooperativeLevel from DISCL_NONEXCLUSIVE | DISCL_FOREGROUND to DISCL_NONEXCLUSIVE | DISCL_BACKGROUND
//bin.Position = state.Mapper.MapRamToRom(jp ? 0 : 0x7faf07);
//bin.WriteUInt8(0x0a);
// 0x413660 -> this branch is false when game is inactive, which skips most of the game update logic
// 0x413A10 -> GameHasFocusCached() or something along those lines?
// 0x412520 -> corresponding setter to the above
// 0x4161BE -> called from here
// 0x415cc0 -> function registered as the window procedure in SetWindowLongA()
// don't silence audio output when unfocused
using (var branch = new BranchHelper4Byte(bin, state.Mapper)) {
bin.Position = state.Mapper.MapRamToRom(jp ? 0x4161b1 : 0x4161c1);
branch.WriteJump5Byte(0xe9);
branch.SetTarget(jp ? 0x4161f9u : 0x416209u);
}
// still run main game loop when unfocused
bin.Position = state.Mapper.MapRamToRom(jp ? 0x413650 : 0x413660);
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
// avoid processing mouse clicks when unfocused
// (this previously happened only implicitly because the game didn't run...)
// carve out some now-unused code space
uint codespaceStart = jp ? 0x4161b6u : 0x4161c6u;
uint codespaceEnd = jp ? 0x4161f9u : 0x416209u;
var codespace = new RegionHelper(codespaceStart, codespaceEnd - codespaceStart, "Pause on Focus Loss: Codespace Region");
bin.Position = state.Mapper.MapRamToRom(codespace.Address);
for (uint i = 0; i < codespace.Remaining; ++i)
{
bin.WriteUInt8(0xcc); // int 3
}
// and assemble some logic to skip mouse button processing when unfocused
using (var jump_to_codespace = new BranchHelper4Byte(bin, state.Mapper))
using (var back_to_function = new BranchHelper4Byte(bin, state.Mapper))
using (var skip_processing = new BranchHelper1Byte(bin, state.Mapper)) {
var be = EndianUtils.Endianness.BigEndian;
back_to_function.SetTarget(jp ? 0x6ad622u : 0x6ae652u);
bin.Position = state.Mapper.MapRamToRom(jp ? 0x6ad61e : 0x6ae64e);
ulong GetKeyStateAddress = bin.ReadUInt32(be);
ulong GameStateAddress = (jp ? 0x116f3c0u : 0x1173c40u).ToEndian(be);
// CS2 has this copy-pasted 5 times for the 5 supported mouse buttons so inject in all of them...
for (int i = 0; i < 5; ++i)
{
bin.Position = state.Mapper.MapRamToRom((jp ? 0x6ad61b : 0x6ae64b) + i * 0x11);
jump_to_codespace.WriteJump5Byte(0xe9); // jmp jump_to_codespace
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
}
bin.Position = state.Mapper.MapRamToRom(codespace.Address);
jump_to_codespace.SetTarget(codespace.Address);
bin.WriteUInt48(0x8b0d00000000u | GameStateAddress, be); // mov ecx,[static_address_that_holds_game_state]
bin.WriteUInt16(0x85c9, be); // test ecx,ecx
skip_processing.WriteJump(0x74); // jz skip_processing
bin.WriteUInt48(0x8a89c4090000, be); // mov cl,byte ptr[ecx+9c4h] ; cl now holds 0 if unfocused, 1 if focused
bin.WriteUInt16(0x84c9, be); // test cl,cl
skip_processing.WriteJump(0x74); // jz skip_processing
bin.WriteUInt48(0x8b0d00000000u | GetKeyStateAddress, be); // mov ecx,[USER32.DLL:GetKeyState]
bin.WriteUInt16(0x85c9, be); // test ecx,ecx
skip_processing.WriteJump(0x74); // jz skip_processing
bin.WriteUInt8(0x50); // push eax
bin.WriteUInt16(0xffd1, be); // call ecx
back_to_function.WriteJump5Byte(0xe9); // jmp back_to_function
skip_processing.SetTarget(state.Mapper.MapRomToRam((ulong)bin.Position));
bin.WriteUInt16(0x33c0, be); // xor eax,eax
back_to_function.WriteJump5Byte(0xe9); // jmp back_to_function
codespace.TakeToAddress(state.Mapper.MapRomToRam(bin.Position), "Pause on Focus Loss: don't process mouse clicks");
}
}
public static void PatchLanguageAppropriateVoiceTables(Stream binary, Sen2ExecutablePatchState state)
{
state.InitCodeSpaceIfNeeded(binary);
var mapper = state.Mapper;
var regionStrings = state.RegionScriptCompilerFunctionStrings;
var regionCode = state.RegionScriptCompilerFunction23;
bool jp = state.IsJp;
using (BranchHelper4Byte jump_from_function = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte back_to_function = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte get_pc_config = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte pc_config__get_voice_language = new BranchHelper4Byte(binary, mapper))
using (BranchHelper1Byte depends_on_voice_lang = new BranchHelper1Byte(binary, mapper))
using (BranchHelper1Byte exit_inject = new BranchHelper1Byte(binary, mapper))
using (BranchHelper1Byte use_english_string = new BranchHelper1Byte(binary, mapper))
using (BranchHelper1Byte use_text_lang_string = new BranchHelper1Byte(binary, mapper)) {
EndianUtils.Endianness be = EndianUtils.Endianness.BigEndian;
EndianUtils.Endianness le = EndianUtils.Endianness.LittleEndian;
Stream _ = binary;
get_pc_config.SetTarget(jp ? 0x6cf5b0u : 0x6d0520u);
pc_config__get_voice_language.SetTarget(jp ? 0x6cfbd0u : 0x6d0b90u);
// inject into the asset-from-text-subfolder loader function
long address_of_inject = jp ? 0x51d1e7 : 0x51ce87;
_.Position = mapper.MapRamToRom(address_of_inject);
ulong push_local_formatting_string = _.PeekUInt40(be);
uint address_local_formatting_string = ((uint)(push_local_formatting_string & 0xffffffffu)).SwapEndian();
jump_from_function.SetTarget(regionCode.Address);
jump_from_function.WriteJump5Byte(0xe9);
back_to_function.SetTarget(mapper.MapRomToRam((ulong)_.Position));
ulong push_en_formatting_string;
ulong push_jp_formatting_string;
uint t_vctiming_address;
uint t_voice_address;
if (jp)
{
push_jp_formatting_string = push_local_formatting_string;
t_vctiming_address = 0x8f4a88;
t_voice_address = 0x8f4a10;
// english formatting string doesn't exist in the japanese executable, generate and inject it
byte[] formatting_string_jp = _.ReadBytesFromLocationAndReset(mapper.MapRamToRom(address_local_formatting_string), 0x13);
byte[] extra = _.ReadBytesFromLocationAndReset(0x4f1c4e, 0x3);
byte[] formatting_string_en = new byte[formatting_string_jp.Length + 3];
ArrayUtils.CopyByteArrayPart(formatting_string_jp, 0, formatting_string_en, 0, 0xb);
ArrayUtils.CopyByteArrayPart(extra, 0, formatting_string_en, 0xb, 3);
ArrayUtils.CopyByteArrayPart(formatting_string_jp, 0xb, formatting_string_en, 0xe, 0x8);
uint nonlocal_string_address = regionStrings.Address;
_.Position = mapper.MapRamToRom(regionStrings.Address);
_.Write(formatting_string_en);
regionStrings.TakeToAddress(mapper.MapRomToRam(_.Position), "Voice Tables: EN Formatting String");
push_en_formatting_string = 0x6800000000 | (ulong)(nonlocal_string_address.SwapEndian());
}
else
{
push_en_formatting_string = push_local_formatting_string;
t_vctiming_address = 0x8f7cd4;
t_voice_address = 0x8f7c5c;
// japanese formatting string doesn't exist in the english executable, generate and inject it
byte[] formatting_string_en = _.ReadBytesFromLocationAndReset(mapper.MapRamToRom(address_local_formatting_string), 0x16);
byte[] formatting_string_jp = new byte[formatting_string_en.Length - 3];
ArrayUtils.CopyByteArrayPart(formatting_string_en, 0, formatting_string_jp, 0, 0xb);
ArrayUtils.CopyByteArrayPart(formatting_string_en, 0xe, formatting_string_jp, 0xb, 0x8);
uint nonlocal_string_address = regionStrings.Address;
_.Position = mapper.MapRamToRom(regionStrings.Address);
_.Write(formatting_string_jp);
regionStrings.TakeToAddress(mapper.MapRomToRam(_.Position), "Voice Tables: JP Formatting String");
push_jp_formatting_string = 0x6800000000 | (ulong)(nonlocal_string_address.SwapEndian());
}
// assemble logic to select the voice-language-matching voice tables
_.Position = mapper.MapRamToRom(regionCode.Address);
_.WriteUInt16(0x81ff, be); // cmp edi,(t_vctiming)
_.WriteUInt32(t_vctiming_address, le);
depends_on_voice_lang.WriteJump(0x74); // je depends_on_voice_lang
_.WriteUInt16(0x81ff, be); // cmp edi,(t_voice)
_.WriteUInt32(t_voice_address, le);
depends_on_voice_lang.WriteJump(0x74); // je depends_on_voice_lang
use_text_lang_string.WriteJump(0xeb); // jmp use_text_lang_string
depends_on_voice_lang.SetTarget(mapper.MapRomToRam((ulong)_.Position));
get_pc_config.WriteJump5Byte(0xe8); // call get_pc_config
_.WriteUInt16(0x8bc8, be); // mov ecx,eax
pc_config__get_voice_language.WriteJump5Byte(0xe8); // call pc_config__get_voice_language
_.WriteUInt16(0x84c0, be); // test al,al
use_english_string.WriteJump(0x74); // jz use_english_string
if (jp)
{
use_text_lang_string.SetTarget(mapper.MapRomToRam((ulong)_.Position));
}
_.WriteUInt40(push_jp_formatting_string, be); // push (jp_formatting_string)
exit_inject.WriteJump(0xeb); // jmp exit_inject
use_english_string.SetTarget(mapper.MapRomToRam((ulong)_.Position));
if (!jp)
{
use_text_lang_string.SetTarget(mapper.MapRomToRam((ulong)_.Position));
}
_.WriteUInt40(push_en_formatting_string, be); // push (en_formatting_string)
exit_inject.SetTarget(mapper.MapRomToRam((ulong)_.Position));
back_to_function.WriteJump5Byte(0xe9); // jmp back_to_function
regionCode.TakeToAddress(mapper.MapRomToRam(_.Position), "Voice Tables: Formatting String Select Code");
}
}
public static void PatchDisablePauseOnFocusLoss(Stream bin, Sen1ExecutablePatchState state)
{
bool jp = state.IsJp;
// 0x444AA0 -> game active setter
// 0x444AF0 -> game active getter
// don't silence audio output when unfocused
using (var branch = new BranchHelper4Byte(bin, state.Mapper)) {
bin.Position = state.Mapper.MapRamToRom(jp ? 0x447d6a : 0x447eba);
branch.WriteJump5Byte(0xe9);
branch.SetTarget(jp ? 0x447da6u : 0x447ef6u);
}
// still run main game loop when unfocused
bin.Position = state.Mapper.MapRamToRom(jp ? 0x441c00 : 0x441d50);
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
// avoid processing mouse clicks when unfocused
// (this previously happened only implicitly because the game didn't run...)
// carve out some now-unused code space
uint codespaceStart = jp ? 0x447d6fu : 0x447ebfu;
uint codespaceEnd = jp ? 0x447da4u : 0x447ef4u;
var codespace = new RegionHelper(codespaceStart, codespaceEnd - codespaceStart, "Pause on Focus Loss: Codespace Region");
bin.Position = state.Mapper.MapRamToRom(codespace.Address);
for (uint i = 0; i < codespace.Remaining; ++i)
{
bin.WriteUInt8(0xcc); // int 3
}
// and assemble some logic to skip mouse button processing when unfocused
using (var jump_to_codespace = new BranchHelper4Byte(bin, state.Mapper))
using (var back_to_function = new BranchHelper4Byte(bin, state.Mapper))
using (var skip_processing = new BranchHelper1Byte(bin, state.Mapper)) {
var be = EndianUtils.Endianness.BigEndian;
back_to_function.SetTarget(jp ? 0x479ad8u : 0x47b348u);
bin.Position = state.Mapper.MapRamToRom(jp ? 0x479ad4u : 0x47b344);
ulong GetKeyStateAddress = bin.ReadUInt32(be);
ulong GameStateAddress = (jp ? 0x1361c28u : 0x01363fc8u).ToEndian(be);
bin.Position = state.Mapper.MapRamToRom(jp ? 0x479ad1 : 0x47b341);
jump_to_codespace.WriteJump5Byte(0xe9); // jmp jump_to_codespace
bin.WriteUInt8(0x90); // nop
bin.WriteUInt8(0x90); // nop
bin.Position = state.Mapper.MapRamToRom(codespace.Address);
jump_to_codespace.SetTarget(codespace.Address);
bin.WriteUInt48(0x8b0d00000000u | GameStateAddress, be); // mov ecx,[static_address_that_holds_game_state]
bin.WriteUInt16(0x85c9, be); // test ecx,ecx
skip_processing.WriteJump(0x74); // jz skip_processing
bin.WriteUInt48(0x8a89b8070000, be); // mov cl,byte ptr[ecx+7b8h] ; cl now holds 0 if unfocused, 1 if focused
bin.WriteUInt16(0x84c9, be); // test cl,cl
skip_processing.WriteJump(0x74); // jz skip_processing
bin.WriteUInt48(0x8b0d00000000u | GetKeyStateAddress, be); // mov ecx,[USER32.DLL:GetKeyState]
bin.WriteUInt16(0x85c9, be); // test ecx,ecx
skip_processing.WriteJump(0x74); // jz skip_processing
bin.WriteUInt8(0x50); // push eax
bin.WriteUInt16(0xffd1, be); // call ecx
back_to_function.WriteJump5Byte(0xe9); // jmp back_to_function
skip_processing.SetTarget(state.Mapper.MapRomToRam((ulong)bin.Position));
bin.WriteUInt16(0x33c0, be); // xor eax,eax
back_to_function.WriteJump5Byte(0xe9); // jmp back_to_function
codespace.TakeToAddress(state.Mapper.MapRomToRam(bin.Position), "Pause on Focus Loss: don't process mouse clicks");
}
}
public static void PatchMusicQueueingOnSoundThreadSide(Stream binary, Sen2ExecutablePatchState state)
{
var mapper = state.Mapper;
var a = state.BgmTimingPatchLocations;
state.InitCodeSpaceIfNeeded(binary);
using (BranchHelper4Byte lock_mutex = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte unlock_mutex = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte inject_entry_point = new BranchHelper4Byte(binary, mapper))
using (BranchHelper4Byte enqueue_check = new BranchHelper4Byte(binary, mapper))
using (BranchHelper1Byte exit_continue = new BranchHelper1Byte(binary, mapper))
using (BranchHelper1Byte exit_skip = new BranchHelper1Byte(binary, mapper))
using (BranchHelper4Byte back_to_function = new BranchHelper4Byte(binary, mapper)) {
EndianUtils.Endianness be = EndianUtils.Endianness.BigEndian;
EndianUtils.Endianness le = EndianUtils.Endianness.LittleEndian;
Stream _ = binary;
lock_mutex.SetTarget(a.LockMutex);
unlock_mutex.SetTarget(a.UnlockMutex);
// ignore the check if the track is already playing on main thread side
{
_.Position = (long)mapper.MapRamToRom(a.BgmAlreadyPlayingJump);
_.WriteUInt8(0xeb);
// for testing, write command even if the tracked track is the same
//_.Position = (long)mapper.MapRamToRom(0x57c836);
//_.WriteUInt8(0x90);
//_.WriteUInt8(0x90);
}
// on audio thread side, inject after the bgm play command is extracted from the ringbuffer
// but before it is actually used to switch to the BGM
{
_.Position = (long)mapper.MapRamToRom(a.AddressOfSkipEnqueueOnSoundThreadSideInjection);
inject_entry_point.WriteJump5Byte(0xe9);
back_to_function.SetTarget(mapper.MapRomToRam((ulong)_.Position));
}
{
_.Position = (long)mapper.MapRamToRom(state.Region50a.Address);
inject_entry_point.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt56(0xf74610ffffff7f, be); // test dword ptr[esi+10h],7FFFFFFFh
enqueue_check.WriteJump6Byte(0x0f85); // jne enqueue_check
_.WriteUInt16(0x8bce, be); // mov ecx,esi
_.WriteUInt24(0xff5034, be); // call dword ptr[eax+34h]
back_to_function.WriteJump5Byte(0xe9); // jmp back_to_function
state.Region50a.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Queueing Audio Thread Side: Inject Entry");
}
{
_.Position = (long)mapper.MapRamToRom(state.Region60.Address);
enqueue_check.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt8(0x57); // push edi
_.WriteUInt24(0x8d4e40, be); // lea ecx,[esi+40h]
lock_mutex.WriteJump5Byte(0xe8); // call lock_mutex
_.WriteUInt24(0x8b4614, be); // mov eax,dword ptr[esi+14h]
_.WriteUInt32(0x8b4c241c, be); // mov ecx,dword ptr[esp+1Ch]
_.WriteUInt24(0x8b3c88, be); // mov edi,dword ptr[eax+ecx*4h]
_.WriteUInt16(0x8b07, be); // mov eax,dword ptr[edi]
_.WriteUInt16(0x8bcf, be); // mov ecx,edi
_.WriteUInt24(0x8b4010, be); // mov eax,dword ptr[eax+10h]
_.WriteUInt16(0xffd0, be); // call eax
_.WriteUInt16(0x84c0, be); // test al,al
exit_continue.WriteJump(0x74); // je exit_continue
_.WriteUInt24(0x8b4708, be); // mov eax,dword ptr[edi+8h]
_.WriteUInt16(0x85c0, be); // test eax,eax
exit_continue.WriteJump(0x74); // je exit_continue
_.WriteUInt24(0x8b404c, be); // mov eax,dword ptr[eax+4Ch]
_.WriteUInt48(0x8b8dccfeffff, be); // mov ecx,dword ptr[ebp-134h]
_.WriteUInt16(0x3bc1, be); // cmp eax,ecx
exit_continue.WriteJump(0x75); // jne exit_continue
_.WriteUInt24(0x8a4738, be); // mov al,byte ptr[edi+38h]
_.WriteUInt16(0x84c0, be); // test al,al
exit_continue.WriteJump(0x75); // jne exit_continue
_.WriteUInt8(0x5f); // pop edi
_.WriteUInt24(0x83c41c, be); // add esp,1Ch
exit_skip.WriteJump(0xeb); // jmp exit_skip
exit_continue.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt8(0x5f); // pop edi
_.WriteUInt16(0x8b06, be); // mov eax,dword ptr[esi]
_.WriteUInt16(0x8bce, be); // mov ecx,esi
_.WriteUInt24(0xff5034, be); // call dword ptr[eax+34h]
exit_skip.SetTarget(mapper.MapRomToRam((ulong)_.Position));
_.WriteUInt24(0x8d4e40, be); // lea ecx,[esi+40h]
unlock_mutex.WriteJump5Byte(0xe8); // call unlock_mutex
back_to_function.WriteJump5Byte(0xe9); // jmp back_to_function
state.Region60.TakeToAddress((long)mapper.MapRomToRam((ulong)_.Position), "BGM Queueing Audio Thread Side: Inject Main");
}
}
}