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input.cpp
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input.cpp
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/*
* Originally part of "ReShade", Copyright (C) 2014 Patrick Mours. All rights reserved.
* License: https://github.com/crosire/reshade#license
*/
#include "input.hpp"
#include <algorithm>
#include <unordered_map>
#include <cassert>
#include <Windows.h>
#include <log.h>
#include <eHooking/Hook.h>
#include <injector/include/injector/assembly.hpp>
#include <ModUtils/Patterns.h>
static std::shared_mutex s_windows_mutex;
static std::unordered_map<HWND, unsigned int> s_raw_input_windows;
static std::unordered_map<HWND, std::weak_ptr<re4t::input>> s_windows;
static std::unordered_map<unsigned int, std::string> _keyboardStringMap;
static std::unordered_map<std::string, unsigned int> _keyboardVKMap;
static std::unordered_map<std::string, unsigned int> _keyboardDIKMap;
std::vector<Hotkey> m_Hotkeys;
std::shared_ptr<class re4t::input> pInput;
re4t::input::input(window_handle window)
: _window(window)
{
}
void re4t::input::register_window_with_raw_input(window_handle window, unsigned int flags)
{
assert(window != nullptr);
const std::unique_lock<std::shared_mutex> lock(s_windows_mutex);
const auto insert = s_raw_input_windows.emplace(static_cast<HWND>(window), flags);
if (!insert.second) insert.first->second |= flags;
}
std::shared_ptr<re4t::input> re4t::input::register_window(window_handle window)
{
assert(window != nullptr);
DWORD process_id = 0;
GetWindowThreadProcessId(static_cast<HWND>(window), &process_id);
if (process_id != GetCurrentProcessId())
{
spd::log()->info("{0} -> Cannot capture input for window \"{1}\" created by a different process.", __FUNCTION__, window);
return nullptr;
}
const std::unique_lock<std::shared_mutex> lock(s_windows_mutex);
const auto insert = s_windows.emplace(static_cast<HWND>(window), std::weak_ptr<input>());
if (insert.second || insert.first->second.expired())
{
spd::log()->info("{0} -> Starting input capture for window {1}.", __FUNCTION__, window);
const auto instance = std::make_shared<input>(window);
insert.first->second = instance;
return instance;
}
else
{
return insert.first->second.lock();
}
}
bool re4t::input::handle_window_message(const void* message_data)
{
assert(message_data != nullptr);
MSG details = *static_cast<const MSG*>(message_data);
bool is_mouse_message = details.message >= WM_MOUSEFIRST && details.message <= WM_MOUSELAST;
bool is_keyboard_message = details.message >= WM_KEYFIRST && details.message <= WM_KEYLAST;
// Ignore messages that are not related to mouse or keyboard input
if (details.message != WM_INPUT && !is_mouse_message && !is_keyboard_message)
return false;
// Guard access to windows list against race conditions
std::unique_lock<std::shared_mutex> lock(s_windows_mutex);
// Remove any expired entry from the list
for (auto it = s_windows.begin(); it != s_windows.end();)
if (it->second.expired())
it = s_windows.erase(it);
else
++it;
// Look up the window in the list of known input windows
auto input_window = s_windows.find(details.hwnd);
const auto raw_input_window = s_raw_input_windows.find(details.hwnd);
if (input_window == s_windows.end())
{
// Walk through the window chain and until an known window is found
EnumChildWindows(details.hwnd, [](HWND hwnd, LPARAM lparam) -> BOOL {
auto& input_window = *reinterpret_cast<decltype(s_windows)::iterator*>(lparam);
// Return true to continue enumeration
return (input_window = s_windows.find(hwnd)) == s_windows.end();
}, reinterpret_cast<LPARAM>(&input_window));
}
if (input_window == s_windows.end())
{
// Some applications handle input in a child window to the main render window
if (const HWND parent = GetParent(details.hwnd); parent != NULL)
input_window = s_windows.find(parent);
}
if (input_window == s_windows.end() && raw_input_window != s_raw_input_windows.end() &&
(raw_input_window->second & (RIDEV_INPUTSINK | RIDEV_EXINPUTSINK | RIDEV_CAPTUREMOUSE)) != 0)
{
// Reroute this raw input message to the window with the most rendering
input_window = std::max_element(s_windows.begin(), s_windows.end(),
[](auto lhs, auto rhs) { return lhs.second.lock()->_frame_count < rhs.second.lock()->_frame_count; });
}
if (input_window == s_windows.end())
return false;
const std::shared_ptr<input> input = input_window->second.lock();
// It may happen that the input was destroyed between the removal of expired entries above and here, so need to abort in this case
if (input == nullptr)
return false;
// At this point we have a shared pointer to the input object and no longer reference any memory from the windows list, so can release the lock
lock.unlock();
// Calculate window client mouse position
ScreenToClient(static_cast<HWND>(input->_window), &details.pt);
// Prevent input threads from modifying input while it is accessed elsewhere
const std::unique_lock<std::shared_mutex> input_lock(input->_mutex);
input->_mouse_position[0] = details.pt.x;
input->_mouse_position[1] = details.pt.y;
switch (details.message)
{
case WM_INPUT:
RAWINPUT raw_data;
if (UINT raw_data_size = sizeof(raw_data);
GET_RAWINPUT_CODE_WPARAM(details.wParam) != RIM_INPUT || // Ignore all input sink messages (when window is not focused)
GetRawInputData(reinterpret_cast<HRAWINPUT>(details.lParam), RID_INPUT, &raw_data, &raw_data_size, sizeof(raw_data.header)) == UINT(-1))
break;
switch (raw_data.header.dwType)
{
case RIM_TYPEMOUSE:
is_mouse_message = true;
if (raw_input_window == s_raw_input_windows.end() || (raw_input_window->second & RIDEV_NOLEGACY) == 0)
break; // Input is already handled (since legacy mouse messages are enabled), so nothing to do here
// Check if the input is an absolute mouse position event
if (raw_data.data.mouse.usFlags & MOUSE_MOVE_ABSOLUTE)
{
// Update the absolute mouse position
input->_raw_mouse_absolutePos[0] = raw_data.data.mouse.lLastX;
input->_raw_mouse_absolutePos[1] = raw_data.data.mouse.lLastY;
// Update the delta values based on the difference between the current and previous absolute positions
input->_raw_mouse_delta[0] += input->_raw_mouse_absolutePos[0] - input->_raw_mouse_prevAbsolutePos[0];
input->_raw_mouse_delta[1] += input->_raw_mouse_absolutePos[1] - input->_raw_mouse_prevAbsolutePos[1];
// Update the previous absolute position
input->_raw_mouse_prevAbsolutePos[0] = input->_raw_mouse_absolutePos[0];
input->_raw_mouse_prevAbsolutePos[1] = input->_raw_mouse_absolutePos[1];
}
else
{
// Update the delta values
input->_raw_mouse_delta[0] += raw_data.data.mouse.lLastX;
input->_raw_mouse_delta[1] += raw_data.data.mouse.lLastY;
}
if (raw_data.data.mouse.usButtonFlags & RI_MOUSE_LEFT_BUTTON_DOWN)
input->_keys[VK_LBUTTON] = 0x88;
else if (raw_data.data.mouse.usButtonFlags & RI_MOUSE_LEFT_BUTTON_UP)
input->_keys[VK_LBUTTON] = 0x08;
if (raw_data.data.mouse.usButtonFlags & RI_MOUSE_RIGHT_BUTTON_DOWN)
input->_keys[VK_RBUTTON] = 0x88;
else if (raw_data.data.mouse.usButtonFlags & RI_MOUSE_RIGHT_BUTTON_UP)
input->_keys[VK_RBUTTON] = 0x08;
if (raw_data.data.mouse.usButtonFlags & RI_MOUSE_MIDDLE_BUTTON_DOWN)
input->_keys[VK_MBUTTON] = 0x88;
else if (raw_data.data.mouse.usButtonFlags & RI_MOUSE_MIDDLE_BUTTON_UP)
input->_keys[VK_MBUTTON] = 0x08;
if (raw_data.data.mouse.usButtonFlags & RI_MOUSE_BUTTON_4_DOWN)
input->_keys[VK_XBUTTON1] = 0x88;
else if (raw_data.data.mouse.usButtonFlags & RI_MOUSE_BUTTON_4_UP)
input->_keys[VK_XBUTTON1] = 0x08;
if (raw_data.data.mouse.usButtonFlags & RI_MOUSE_BUTTON_5_DOWN)
input->_keys[VK_XBUTTON2] = 0x88;
else if (raw_data.data.mouse.usButtonFlags & RI_MOUSE_BUTTON_5_UP)
input->_keys[VK_XBUTTON2] = 0x08;
if (raw_data.data.mouse.usButtonFlags & RI_MOUSE_WHEEL)
input->_mouse_wheel_delta += static_cast<short>(raw_data.data.mouse.usButtonData) / WHEEL_DELTA;
break;
case RIM_TYPEKEYBOARD:
if (raw_data.data.keyboard.VKey == 0)
break; // Ignore messages without a valid key code
is_keyboard_message = true;
// Do not block key up messages if the key down one was not blocked previously
if (input->_block_keyboard && (raw_data.data.keyboard.Flags & RI_KEY_BREAK) != 0 && raw_data.data.keyboard.VKey < 0xFF && (input->_keys[raw_data.data.keyboard.VKey] & 0x04) == 0)
is_keyboard_message = false;
if (raw_input_window == s_raw_input_windows.end() || (raw_input_window->second & 0x1) == 0)
break; // Input is already handled by 'WM_KEYDOWN' and friends (since legacy keyboard messages are enabled), so nothing to do here
// Filter out prefix messages without a key code
if (raw_data.data.keyboard.VKey < 0xFF)
input->_keys[raw_data.data.keyboard.VKey] = (raw_data.data.keyboard.Flags & RI_KEY_BREAK) == 0 ? 0x88 : 0x08,
input->_keys_time[raw_data.data.keyboard.VKey] = details.time;
// No 'WM_CHAR' messages are sent if legacy keyboard messages are disabled, so need to generate text input manually here
// Cannot use the ToUnicode function always as it seems to reset dead key state and thus calling it can break subsequent application input, should be fine here though since the application is already explicitly using raw input
// Since Windows 10 version 1607 this supports the 0x2 flag, which prevents the keyboard state from being changed, so it is not a problem there anymore either way
if (WCHAR ch[3] = {}; (raw_data.data.keyboard.Flags & RI_KEY_BREAK) == 0 && ToUnicode(raw_data.data.keyboard.VKey, raw_data.data.keyboard.MakeCode, input->_keys, ch, 2, 0x2))
input->_text_input += ch;
break;
}
break;
case WM_CHAR:
input->_text_input += static_cast<wchar_t>(details.wParam);
break;
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
assert(details.wParam > 0 && details.wParam < ARRAYSIZE(input->_keys));
input->_keys[details.wParam] = 0x88;
input->_keys_time[details.wParam] = details.time;
if (input->_block_keyboard)
input->_keys[details.wParam] |= 0x04;
break;
case WM_KEYUP:
case WM_SYSKEYUP:
assert(details.wParam > 0 && details.wParam < ARRAYSIZE(input->_keys));
// Do not block key up messages if the key down one was not blocked previously (so key does not get stuck for the application)
if (input->_block_keyboard && (input->_keys[details.wParam] & 0x04) == 0)
is_keyboard_message = false;
input->_keys[details.wParam] = 0x08;
input->_keys_time[details.wParam] = details.time;
break;
case WM_LBUTTONDOWN:
case WM_LBUTTONDBLCLK: // Double clicking generates this sequence: WM_LBUTTONDOWN -> WM_LBUTTONUP -> WM_LBUTTONDBLCLK -> WM_LBUTTONUP, so handle it like a normal down
input->_keys[VK_LBUTTON] = 0x88;
break;
case WM_LBUTTONUP:
input->_keys[VK_LBUTTON] = 0x08;
break;
case WM_RBUTTONDOWN:
case WM_RBUTTONDBLCLK:
input->_keys[VK_RBUTTON] = 0x88;
break;
case WM_RBUTTONUP:
input->_keys[VK_RBUTTON] = 0x08;
break;
case WM_MBUTTONDOWN:
case WM_MBUTTONDBLCLK:
input->_keys[VK_MBUTTON] = 0x88;
break;
case WM_MBUTTONUP:
input->_keys[VK_MBUTTON] = 0x08;
break;
case WM_MOUSEWHEEL:
input->_mouse_wheel_delta += GET_WHEEL_DELTA_WPARAM(details.wParam) / WHEEL_DELTA;
break;
case WM_XBUTTONDOWN:
assert(HIWORD(details.wParam) == XBUTTON1 || HIWORD(details.wParam) == XBUTTON2);
input->_keys[VK_XBUTTON1 + (HIWORD(details.wParam) - XBUTTON1)] = 0x88;
break;
case WM_XBUTTONUP:
assert(HIWORD(details.wParam) == XBUTTON1 || HIWORD(details.wParam) == XBUTTON2);
input->_keys[VK_XBUTTON1 + (HIWORD(details.wParam) - XBUTTON1)] = 0x08;
break;
}
return (is_mouse_message && input->_block_mouse) || (is_keyboard_message && input->_block_keyboard);
}
bool re4t::input::is_key_down(unsigned int keycode) const
{
assert(keycode < ARRAYSIZE(_keys));
return keycode < ARRAYSIZE(_keys) && (_keys[keycode] & 0x80) == 0x80;
}
bool re4t::input::is_key_pressed(unsigned int keycode) const
{
assert(keycode < ARRAYSIZE(_keys));
return keycode > 0 && keycode < ARRAYSIZE(_keys) && (_keys[keycode] & 0x88) == 0x88;
}
bool re4t::input::is_key_pressed(unsigned int keycode, bool ctrl, bool shift, bool alt, bool force_modifiers) const
{
if (keycode == 0)
return false;
const bool key_down = is_key_pressed(keycode), ctrl_down = is_key_down(VK_CONTROL), shift_down = is_key_down(VK_SHIFT), alt_down = is_key_down(VK_MENU);
if (force_modifiers) // Modifier state is required to match
return key_down && (ctrl == ctrl_down && shift == shift_down && alt == alt_down);
else // Modifier state is optional and only has to match when down
return key_down && (!ctrl || ctrl_down) && (!shift || shift_down) && (!alt || alt_down);
}
bool re4t::input::is_key_released(unsigned int keycode) const
{
assert(keycode < ARRAYSIZE(_keys));
return keycode > 0 && keycode < ARRAYSIZE(_keys) && (_keys[keycode] & 0x88) == 0x08;
}
bool bStateChanged = false;
bool re4t::input::is_combo_pressed(std::vector<uint32_t>* KeyVector) const
{
if (KeyVector->size() < 1)
return false;
if (KeyVector->size() == 1)
return is_key_pressed(KeyVector->at(0));
bool isComboPressed = KeyVector->size() > 0;
for (auto& key : *KeyVector)
{
if (!is_key_down(key) || bStateChanged)
isComboPressed = false;
if (is_key_released(key) && bStateChanged)
bStateChanged = false;
}
if (isComboPressed)
bStateChanged = true;
return isComboPressed;
}
bool re4t::input::is_combo_down(std::vector<uint32_t>* KeyVector) const
{
if (KeyVector->size() < 1)
return false;
if (KeyVector->size() == 1)
return is_key_down(KeyVector->at(0));
bool isComboDown = KeyVector->size() > 0;
for (auto& key : *KeyVector)
{
if (!pInput->is_key_down(key) || bStateChanged)
isComboDown = false;
}
return isComboDown;
}
bool re4t::input::is_any_key_down() const
{
// Skip mouse buttons
for (unsigned int i = VK_XBUTTON2 + 1; i < ARRAYSIZE(_keys); i++)
if (is_key_down(i))
return true;
return false;
}
bool re4t::input::is_any_key_pressed() const
{
return last_key_pressed() != 0;
}
bool re4t::input::is_any_key_released() const
{
return last_key_released() != 0;
}
unsigned int re4t::input::last_key_pressed() const
{
for (unsigned int i = VK_XBUTTON2 + 1; i < ARRAYSIZE(_keys); i++)
if (is_key_pressed(i))
return i;
return 0;
}
unsigned int re4t::input::last_key_released() const
{
for (unsigned int i = VK_XBUTTON2 + 1; i < ARRAYSIZE(_keys); i++)
if (is_key_released(i))
return i;
return 0;
}
bool re4t::input::is_mouse_button_down(unsigned int button) const
{
assert(button < 5);
return is_key_down(VK_LBUTTON + button + (button < 2 ? 0 : 1)); // VK_CANCEL is being ignored by runtime
}
bool re4t::input::is_mouse_button_pressed(unsigned int button) const
{
assert(button < 5);
return is_key_pressed(VK_LBUTTON + button + (button < 2 ? 0 : 1)); // VK_CANCEL is being ignored by runtime
}
bool re4t::input::is_mouse_button_released(unsigned int button) const
{
assert(button < 5);
return is_key_released(VK_LBUTTON + button + (button < 2 ? 0 : 1)); // VK_CANCEL is being ignored by runtime
}
bool re4t::input::is_any_mouse_button_down() const
{
for (unsigned int i = 0; i < 5; i++)
if (is_mouse_button_down(i))
return true;
return false;
}
bool re4t::input::is_any_mouse_button_pressed() const
{
for (unsigned int i = 0; i < 5; i++)
if (is_mouse_button_pressed(i))
return true;
return false;
}
bool re4t::input::is_any_mouse_button_released() const
{
for (unsigned int i = 0; i < 5; i++)
if (is_mouse_button_released(i))
return true;
return false;
}
void re4t::input::max_mouse_position(unsigned int position[2]) const
{
RECT rect = {};
GetClientRect(static_cast<HWND>(_window), &rect);
position[0] = rect.right;
position[1] = rect.bottom;
}
void re4t::input::next_frame()
{
_frame_count++;
// Check hotkey status
for (const Hotkey& hotkey : m_Hotkeys) {
if (is_combo_pressed(hotkey.keyComboVector))
{
if (!bWaitingForHotkey)
hotkey.func();
}
}
for (auto& state : _keys)
state &= ~0x08;
// Reset any pressed down key states (apart from mouse buttons) that have not been updated for more than 5 seconds
// Do not check mouse buttons here, since 'GetAsyncKeyState' always returns the state of the physical mouse buttons, not the logical ones in case they were remapped
// See https://docs.microsoft.com/windows/win32/api/winuser/nf-winuser-getasynckeystate
// And time is not tracked for mouse buttons anyway
const DWORD time = GetTickCount();
for (unsigned int i = 8; i < 256; ++i)
if ((_keys[i] & 0x80) != 0 &&
(time - _keys_time[i]) > 5000 &&
(GetAsyncKeyState(i) & 0x8000) == 0)
(_keys[i] = 0x08);
//_text_input.clear();
//_mouse_wheel_delta = 0;
_last_mouse_position[0] = _mouse_position[0];
_last_mouse_position[1] = _mouse_position[1];
_raw_mouse_delta[0] = 0;
_raw_mouse_delta[1] = 0;
// Update caps lock state
_keys[VK_CAPITAL] |= GetKeyState(VK_CAPITAL) & 0x1;
// Update modifier key state
if ((_keys[VK_MENU] & 0x88) != 0 &&
(GetKeyState(VK_MENU) & 0x8000) == 0)
(_keys[VK_MENU] = 0x08);
// Update print screen state (there is no key down message, but the key up one is received via the message queue)
if ((_keys[VK_SNAPSHOT] & 0x80) == 0 &&
(GetAsyncKeyState(VK_SNAPSHOT) & 0x8000) != 0)
(_keys[VK_SNAPSHOT] = 0x88),
(_keys_time[VK_SNAPSHOT] = time);
}
void re4t::input::imgui_next_frame()
{
_text_input.clear();
_mouse_wheel_delta = 0;
}
std::string re4t::input::key_name_from_vk(unsigned int keycode)
{
assert(!_keyboardStringMap.empty());
if (!_keyboardStringMap.count(keycode))
return std::string();
return _keyboardStringMap[keycode];
}
unsigned int re4t::input::vk_from_key_name(std::string key_name)
{
assert(!_keyboardVKMap.empty());
if (!_keyboardVKMap.count(key_name))
return 0;
return _keyboardVKMap[key_name];
}
unsigned int re4t::input::dik_from_key_name(std::string key_name)
{
assert(!_keyboardDIKMap.empty());
if (!_keyboardDIKMap.count(key_name))
return 0;
return _keyboardDIKMap[key_name];
}
void re4t::input::block_mouse_input(bool enable, bool releaseClipCursor)
{
_block_mouse = enable;
// Some games setup ClipCursor with a tiny area which could make the cursor stay in that area instead of the whole window
if (enable && releaseClipCursor)
ClipCursor(nullptr);
}
void re4t::input::block_keyboard_input(bool enable)
{
_block_keyboard = enable;
}
bool is_blocking_mouse_input()
{
const std::shared_lock<std::shared_mutex> lock(s_windows_mutex);
const auto predicate = [](const auto& input_window) {
return !input_window.second.expired() && input_window.second.lock()->is_blocking_mouse_input();
};
return std::any_of(s_windows.cbegin(), s_windows.cend(), predicate);
}
bool is_blocking_keyboard_input()
{
const std::shared_lock<std::shared_mutex> lock(s_windows_mutex);
const auto predicate = [](const auto& input_window) {
return !input_window.second.expired() && input_window.second.lock()->is_blocking_keyboard_input();
};
return std::any_of(s_windows.cbegin(), s_windows.cend(), predicate);
}
void re4t::input::register_hotkey(Hotkey hotkey)
{
m_Hotkeys.push_back(hotkey);
}
void re4t::input::clear_hotkeys()
{
m_Hotkeys.clear();
}
void ClearKeyboardBuffer(int keycode, BYTE* keyboard_state)
{
unsigned int scan_code = MapVirtualKeyW(keycode, MAPVK_VK_TO_VSC);
wchar_t chars[5];
int code = 0;
do {
code = ToUnicode(keycode, scan_code, keyboard_state, chars, 4, 0);
} while (code < 0);
}
std::string GetStrFromVK(int keycode)
{
unsigned int scan_code = MapVirtualKeyW(keycode, MAPVK_VK_TO_VSC);
uint8_t keyStates[256];
memset(keyStates, 1, 256); // all pressed
wchar_t chars[5];
int code = ToUnicode(keycode, scan_code, keyStates, chars, 4, 0);
if (code == -1) {
// dead key
if (chars[0] == 0 || iswcntrl(chars[0])) {
return std::string();
}
code = 1;
}
// Avoid stuff like ´´ or ~~
ClearKeyboardBuffer(keycode, keyStates);
if (code <= 0 || (code == 1 && iswcntrl(chars[0]))) {
return std::string();
}
return WstrToStr(chars);
}
// Windows API hooks
BOOL(WINAPI* GetMessageA_orig)(LPMSG lpMsg, HWND hWnd, UINT wMsgFilterMin, UINT wMsgFilterMax);
BOOL WINAPI GetMessageA_hook(LPMSG lpMsg, HWND hWnd, UINT wMsgFilterMin, UINT wMsgFilterMax)
{
#if 1
// Implement 'GetMessage' with a timeout (see also DLL_PROCESS_DETACH in dllmain.cpp for more explanation)
while (!PeekMessageA(lpMsg, hWnd, wMsgFilterMin, wMsgFilterMax, PM_REMOVE) && g_module_handle != nullptr)
MsgWaitForMultipleObjects(0, nullptr, FALSE, 500, QS_ALLINPUT);
if (g_module_handle == nullptr && lpMsg->message != WM_QUIT)
std::memset(lpMsg, 0, sizeof(MSG)); // Clear message structure, so application does not process it
#else
const BOOL result = GetMessageA_orig(lpMsg, hWnd, wMsgFilterMin, wMsgFilterMax);
if (result < 0) // If there is an error, the return value is negative (https://docs.microsoft.com/windows/win32/api/winuser/nf-winuser-getmessage)
return result;
assert(lpMsg != nullptr);
if (lpMsg->hwnd != nullptr && re4t::input::handle_window_message(lpMsg))
{
// We still want 'WM_CHAR' messages, so translate message
TranslateMessage(lpMsg);
// Change message so it is ignored by the recipient window
lpMsg->message = WM_NULL;
}
#endif
return lpMsg->message != WM_QUIT;
}
BOOL(WINAPI* GetMessageW_orig)(LPMSG lpMsg, HWND hWnd, UINT wMsgFilterMin, UINT wMsgFilterMax);
BOOL WINAPI GetMessageW_hook(LPMSG lpMsg, HWND hWnd, UINT wMsgFilterMin, UINT wMsgFilterMax)
{
#if 1
while (!PeekMessageW(lpMsg, hWnd, wMsgFilterMin, wMsgFilterMax, PM_REMOVE) && g_module_handle != nullptr)
MsgWaitForMultipleObjects(0, nullptr, FALSE, 500, QS_ALLINPUT);
if (g_module_handle == nullptr && lpMsg->message != WM_QUIT)
std::memset(lpMsg, 0, sizeof(MSG));
#else
const BOOL result = GetMessageW_orig(lpMsg, hWnd, wMsgFilterMin, wMsgFilterMax);
if (result < 0)
return result;
assert(lpMsg != nullptr);
if (lpMsg->hwnd != nullptr && re4t::input::handle_window_message(lpMsg))
{
// We still want 'WM_CHAR' messages, so translate message
TranslateMessage(lpMsg);
// Change message so it is ignored by the recipient window
lpMsg->message = WM_NULL;
}
#endif
return lpMsg->message != WM_QUIT;
}
BOOL(WINAPI* PeekMessageA_orig)(LPMSG lpMsg, HWND hWnd, UINT wMsgFilterMin, UINT wMsgFilterMax, UINT wRemoveMsg);
BOOL WINAPI PeekMessageA_hook(LPMSG lpMsg, HWND hWnd, UINT wMsgFilterMin, UINT wMsgFilterMax, UINT wRemoveMsg)
{
if (!PeekMessageA_orig(lpMsg, hWnd, wMsgFilterMin, wMsgFilterMax, wRemoveMsg))
return FALSE;
assert(lpMsg != nullptr);
if (lpMsg->hwnd != nullptr && (wRemoveMsg & PM_REMOVE) != 0 && re4t::input::handle_window_message(lpMsg))
{
// We still want 'WM_CHAR' messages, so translate message
TranslateMessage(lpMsg);
// Change message so it is ignored by the recipient window
lpMsg->message = WM_NULL;
}
return TRUE;
}
BOOL(WINAPI* PeekMessageW_orig)(LPMSG lpMsg, HWND hWnd, UINT wMsgFilterMin, UINT wMsgFilterMax, UINT wRemoveMsg);
BOOL WINAPI PeekMessageW_hook(LPMSG lpMsg, HWND hWnd, UINT wMsgFilterMin, UINT wMsgFilterMax, UINT wRemoveMsg)
{
if (!PeekMessageW_orig(lpMsg, hWnd, wMsgFilterMin, wMsgFilterMax, wRemoveMsg))
return FALSE;
assert(lpMsg != nullptr);
if (lpMsg->hwnd != nullptr && (wRemoveMsg & PM_REMOVE) != 0 && re4t::input::handle_window_message(lpMsg))
{
// We still want 'WM_CHAR' messages, so translate message
TranslateMessage(lpMsg);
// Change message so it is ignored by the recipient window
lpMsg->message = WM_NULL;
}
return TRUE;
}
BOOL(WINAPI* PostMessageA_orig)(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);
BOOL WINAPI PostMessageA_hook(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
// Do not allow mouse movement simulation while we block input
if (is_blocking_mouse_input() && Msg == WM_MOUSEMOVE)
return TRUE;
return PostMessageA_orig(hWnd, Msg, wParam, lParam);
}
BOOL(WINAPI* PostMessageW_orig)(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);
BOOL WINAPI PostMessageW_hook(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
if (is_blocking_mouse_input() && Msg == WM_MOUSEMOVE)
return TRUE;
return PostMessageW_orig(hWnd, Msg, wParam, lParam);
}
BOOL(WINAPI* RegisterRawInputDevices_orig)(PCRAWINPUTDEVICE pRawInputDevices, UINT uiNumDevices, UINT cbSize);
BOOL WINAPI RegisterRawInputDevices_hook(PCRAWINPUTDEVICE pRawInputDevices, UINT uiNumDevices, UINT cbSize)
{
if (re4t::cfg->bVerboseLog)
spd::log()->info("{0} -> Redirecting RegisterRawInputDevices (pRawInputDevices = {1}, uiNumDevices = {2}, cbSize = {3})", __FUNCTION__, IntToHexStr(pRawInputDevices), uiNumDevices, cbSize);
for (UINT i = 0; i < uiNumDevices; ++i)
{
const auto &device = pRawInputDevices[i];
if (re4t::cfg->bVerboseLog)
{
spd::log()->info("{0} -> Dumping device registration at index {1}:", __FUNCTION__, i);
spd::log()->info("+-----------------------------------------+-----------------------------------------+");
spd::log()->info("| Parameter | Value |");
spd::log()->info("+-----------------------------------------+-----------------------------------------+");
spd::log()->info("| UsagePage | {:>39} |", IntToHexStr(device.usUsagePage));
spd::log()->info("| Usage | {:>39} |", IntToHexStr(device.usUsage));
spd::log()->info("| Flags | {:>39} |", IntToHexStr(device.dwFlags));
spd::log()->info("| TargetWindow | {:>39} |", IntToHexStr(device.hwndTarget));
spd::log()->info("+-----------------------------------------+-----------------------------------------+");
}
if (device.usUsagePage != 1 || device.hwndTarget == nullptr)
continue;
re4t::input::register_window_with_raw_input(device.hwndTarget, device.dwFlags);
}
if (!RegisterRawInputDevices_orig(pRawInputDevices, uiNumDevices, cbSize))
{
spd::log()->info("{0} -> Failed with error code {1}", __FUNCTION__, GetLastError());
return FALSE;
}
return TRUE;
}
BOOL(WINAPI* ClipCursor_orig)(const RECT* lpRect);
BOOL WINAPI ClipCursor_hook(const RECT *lpRect)
{
if (is_blocking_mouse_input())
// Some applications clip the mouse cursor, so disable that while we want full control over mouse input
lpRect = nullptr;
return ClipCursor_orig(lpRect);
}
static POINT s_last_cursor_position = {};
BOOL(WINAPI* SetCursorPos_orig)(int X, int Y);
BOOL WINAPI SetCursorPos_hook(int X, int Y)
{
s_last_cursor_position.x = X;
s_last_cursor_position.y = Y;
if (is_blocking_mouse_input())
return TRUE;
return SetCursorPos_orig(X, Y);
}
BOOL(WINAPI* GetCursorPos_orig)(LPPOINT lpPoint);
BOOL WINAPI GetCursorPos_hook(LPPOINT lpPoint)
{
if (is_blocking_mouse_input())
{
assert(lpPoint != nullptr);
// Just return the last cursor position before we started to block mouse input, to stop it from moving
*lpPoint = s_last_cursor_position;
return TRUE;
}
return GetCursorPos_orig(lpPoint);
}
FARPROC p_GetMessageA = nullptr;
FARPROC p_GetMessageW = nullptr;
FARPROC p_PeekMessageA = nullptr;
FARPROC p_PeekMessageW = nullptr;
FARPROC p_PostMessageA = nullptr;
FARPROC p_PostMessageW = nullptr;
FARPROC p_RegisterRawInputDevices = nullptr;
FARPROC p_ClipCursor = nullptr;
FARPROC p_SetCursorPos = nullptr;
FARPROC p_GetCursorPos = nullptr;
void re4t::input::init()
{
// Reset input status for the next frame. We orignally did this in inside a EndScene() hook, but some values would
// get messed up due to some form of V-Sync (tested on AMD, not sure on Nvidia/Intel). We now do it inside the game's main loop, after
// everything has been rendered. This is currently replacing a call to "systemVSyncPost", but that is a nullsub in RE4 UHD. If we
// ever restore that for some reason, we should move this somewhere else.
{
auto pattern = hook::pattern("81 60 54 FF FF FF EF E8 ? ? ? ? E8");
struct MainLoop_InputNext_hook
{
void operator()(injector::reg_pack& regs)
{
// Reset input status
pInput->next_frame();
}
}; injector::MakeInline<MainLoop_InputNext_hook>(pattern.count(1).get(0).get<uint32_t>(0xC), pattern.count(1).get(0).get<uint32_t>(0x11));
}
// Hook Windows functions to intercept/manipulate input
{
spd::log()->info("Hooking input-related APIs...");
// GetMessageA
{
if (re4t::cfg->bVerboseLog)
spd::log()->info("Hooking GetMessageA...");
HMODULE h_user32 = GetModuleHandle(L"user32.dll");
InterlockedExchangePointer((PVOID*)&p_GetMessageA, Hook::HotPatch(Hook::GetProcAddress(h_user32, "GetMessageA"), "GetMessageA", GetMessageA_hook));
GetMessageA_orig = (decltype(GetMessageA_orig))InterlockedCompareExchangePointer((PVOID*)&p_GetMessageA, nullptr, nullptr);
}
// GetMessageW
{
if (re4t::cfg->bVerboseLog)
spd::log()->info("Hooking GetMessageW...");
HMODULE h_user32 = GetModuleHandle(L"user32.dll");
InterlockedExchangePointer((PVOID*)&p_GetMessageW, Hook::HotPatch(Hook::GetProcAddress(h_user32, "GetMessageW"), "GetMessageW", GetMessageW_hook));
GetMessageW_orig = (decltype(GetMessageW_orig))InterlockedCompareExchangePointer((PVOID*)&p_GetMessageW, nullptr, nullptr);
}
// PeekMessageA
{
if (re4t::cfg->bVerboseLog)
spd::log()->info("Hooking PeekMessageA...");
HMODULE h_user32 = GetModuleHandle(L"user32.dll");
InterlockedExchangePointer((PVOID*)&p_PeekMessageA, Hook::HotPatch(Hook::GetProcAddress(h_user32, "PeekMessageA"), "PeekMessageA", PeekMessageA_hook));
PeekMessageA_orig = (decltype(PeekMessageA_orig))InterlockedCompareExchangePointer((PVOID*)&p_PeekMessageA, nullptr, nullptr);
}
// PeekMessageW
{
if (re4t::cfg->bVerboseLog)
spd::log()->info("Hooking PeekMessageW...");
HMODULE h_user32 = GetModuleHandle(L"user32.dll");
InterlockedExchangePointer((PVOID*)&p_PeekMessageW, Hook::HotPatch(Hook::GetProcAddress(h_user32, "PeekMessageW"), "PeekMessageW", PeekMessageW_hook));
PeekMessageW_orig = (decltype(PeekMessageW_orig))InterlockedCompareExchangePointer((PVOID*)&p_PeekMessageW, nullptr, nullptr);
}
// PostMessageA
{
if (re4t::cfg->bVerboseLog)
spd::log()->info("Hooking PostMessageA...");
HMODULE h_user32 = GetModuleHandle(L"user32.dll");
InterlockedExchangePointer((PVOID*)&p_PostMessageA, Hook::HotPatch(Hook::GetProcAddress(h_user32, "PostMessageA"), "PostMessageA", PostMessageA_hook));
PostMessageA_orig = (decltype(PostMessageA_orig))InterlockedCompareExchangePointer((PVOID*)&p_PostMessageA, nullptr, nullptr);
}
// PostMessageW
{
if (re4t::cfg->bVerboseLog)
spd::log()->info("Hooking PostMessageW...");
HMODULE h_user32 = GetModuleHandle(L"user32.dll");
InterlockedExchangePointer((PVOID*)&p_PostMessageW, Hook::HotPatch(Hook::GetProcAddress(h_user32, "PostMessageW"), "PostMessageW", PostMessageW_hook));
PostMessageW_orig = (decltype(PostMessageW_orig))InterlockedCompareExchangePointer((PVOID*)&p_PostMessageW, nullptr, nullptr);
}
// RegisterRawInputDevices
{
if (re4t::cfg->bVerboseLog)
spd::log()->info("Hooking RegisterRawInputDevices...");
HMODULE h_user32 = GetModuleHandle(L"user32.dll");
InterlockedExchangePointer((PVOID*)&p_RegisterRawInputDevices, Hook::HotPatch(Hook::GetProcAddress(h_user32, "RegisterRawInputDevices"), "RegisterRawInputDevices", RegisterRawInputDevices_hook));
RegisterRawInputDevices_orig = (decltype(RegisterRawInputDevices_orig))InterlockedCompareExchangePointer((PVOID*)&p_RegisterRawInputDevices, nullptr, nullptr);
}
// ClipCursor
{
if (re4t::cfg->bVerboseLog)
spd::log()->info("Hooking ClipCursor...");
HMODULE h_user32 = GetModuleHandle(L"user32.dll");
InterlockedExchangePointer((PVOID*)&p_ClipCursor, Hook::HotPatch(Hook::GetProcAddress(h_user32, "ClipCursor"), "ClipCursor", ClipCursor_hook));
ClipCursor_orig = (decltype(ClipCursor_orig))InterlockedCompareExchangePointer((PVOID*)&p_ClipCursor, nullptr, nullptr);
}
// SetCursorPos
{
if (re4t::cfg->bVerboseLog)
spd::log()->info("Hooking SetCursorPos...");
HMODULE h_user32 = GetModuleHandle(L"user32.dll");
InterlockedExchangePointer((PVOID*)&p_SetCursorPos, Hook::HotPatch(Hook::GetProcAddress(h_user32, "SetCursorPos"), "SetCursorPos", SetCursorPos_hook));
SetCursorPos_orig = (decltype(SetCursorPos_orig))InterlockedCompareExchangePointer((PVOID*)&p_SetCursorPos, nullptr, nullptr);
}
// GetCursorPos
{
if (re4t::cfg->bVerboseLog)
spd::log()->info("Hooking GetCursorPos...");
HMODULE h_user32 = GetModuleHandle(L"user32.dll");
InterlockedExchangePointer((PVOID*)&p_GetCursorPos, Hook::HotPatch(Hook::GetProcAddress(h_user32, "GetCursorPos"), "GetCursorPos", GetCursorPos_hook));
GetCursorPos_orig = (decltype(GetCursorPos_orig))InterlockedCompareExchangePointer((PVOID*)&p_GetCursorPos, nullptr, nullptr);
}
}
// Populate our keymap
{
spd::log()->info("Populating keymap");
std::string keystring;
for (int i = 0; i < 256; ++i)
{
keystring = GetStrFromVK(i);
_keyboardStringMap.insert(_keyboardStringMap.end(), std::pair<unsigned int, std::string>(i, keystring));
keystring.clear();
}
_keyboardStringMap[0x1B] = "ESCAPE";
_keyboardStringMap[0x70] = "F1";
_keyboardStringMap[0x71] = "F2";
_keyboardStringMap[0x72] = "F3";
_keyboardStringMap[0x73] = "F4";
_keyboardStringMap[0x74] = "F5";
_keyboardStringMap[0x75] = "F6";
_keyboardStringMap[0x76] = "F7";
_keyboardStringMap[0x77] = "F8";
_keyboardStringMap[0x78] = "F9";
_keyboardStringMap[0x79] = "F10";
_keyboardStringMap[0x7A] = "F11";
_keyboardStringMap[0x7B] = "F12";
_keyboardStringMap[0x7C] = "F13";
_keyboardStringMap[0x7D] = "F14";
_keyboardStringMap[0x7E] = "F15";
_keyboardStringMap[0x08] = "BACKSPACE";
_keyboardStringMap[0x20] = "SPACE";
_keyboardStringMap[0x2D] = "INSERT";
_keyboardStringMap[0x23] = "END";
_keyboardStringMap[0x24] = "HOME";
_keyboardStringMap[0x22] = "PAGEDOWN";
_keyboardStringMap[0x21] = "PAGEUP";
_keyboardStringMap[0x2E] = "DELETE";
_keyboardStringMap[0x0D] = "ENTER";
_keyboardStringMap[0x09] = "TAB";
_keyboardStringMap[0x14] = "CAPSLOCK";
_keyboardStringMap[0x5D] = "APPS";
_keyboardStringMap[0x15] = "KANA";
_keyboardStringMap[0x19] = "KANJI";
_keyboardStringMap[0x1C] = "CONVERT";
_keyboardStringMap[0x1D] = "NONCONVERT";
_keyboardStringMap[0x2C] = "PRINTSCR";
_keyboardStringMap[0x91] = "SCROLL";
_keyboardStringMap[0x13] = "PAUSE";
// Numpad
_keyboardStringMap[0x90] = "NUMLOCK";
_keyboardStringMap[0x6F] = "NUMPAD_/";
_keyboardStringMap[0x6C] = "NUMPAD_ENTER";