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#include "stdafx.h"
#ifdef _WINDOWS64
#include "KeyboardMouseInput.h"
#include <cmath>
KeyboardMouseInput g_KBMInput;
extern HWND g_hWnd;
// Forward declaration
static void ClipCursorToWindow(HWND hWnd);
static bool IsModifierKeyDown(const bool* keyState, int vkCode)
{
switch (vkCode)
{
case VK_SHIFT:
return keyState[VK_LSHIFT] || keyState[VK_RSHIFT];
case VK_CONTROL:
return keyState[VK_LCONTROL] || keyState[VK_RCONTROL];
case VK_MENU:
return keyState[VK_LMENU] || keyState[VK_RMENU];
default:
return false;
}
}
void KeyboardMouseInput::Init()
{
memset(m_keyDown, 0, sizeof(m_keyDown));
memset(m_keyDownPrev, 0, sizeof(m_keyDownPrev));
memset(m_keyPressedAccum, 0, sizeof(m_keyPressedAccum));
memset(m_keyReleasedAccum, 0, sizeof(m_keyReleasedAccum));
memset(m_keyPressed, 0, sizeof(m_keyPressed));
memset(m_keyReleased, 0, sizeof(m_keyReleased));
memset(m_mouseButtonDown, 0, sizeof(m_mouseButtonDown));
memset(m_mouseButtonDownPrev, 0, sizeof(m_mouseButtonDownPrev));
memset(m_mouseBtnPressedAccum, 0, sizeof(m_mouseBtnPressedAccum));
memset(m_mouseBtnReleasedAccum, 0, sizeof(m_mouseBtnReleasedAccum));
memset(m_mouseBtnPressed, 0, sizeof(m_mouseBtnPressed));
memset(m_mouseBtnReleased, 0, sizeof(m_mouseBtnReleased));
m_mouseX = 0;
m_mouseY = 0;
m_mouseDeltaX = 0;
m_mouseDeltaY = 0;
m_mouseDeltaAccumX = 0;
m_mouseDeltaAccumY = 0;
m_mouseWheelAccum = 0;
m_mouseWheelConsumed = false;
m_mouseGrabbed = false;
m_cursorHiddenForUI = false;
m_windowFocused = true;
m_hasInput = false;
m_kbmActive = true;
m_screenWantsCursorHidden = false;
RAWINPUTDEVICE rid;
rid.usUsagePage = 0x01; // HID_USAGE_PAGE_GENERIC
rid.usUsage = 0x02; // HID_USAGE_GENERIC_MOUSE
rid.dwFlags = 0;
rid.hwndTarget = g_hWnd;
RegisterRawInputDevices(&rid, 1, sizeof(rid));
}
void KeyboardMouseInput::ClearAllState()
{
memset(m_keyDown, 0, sizeof(m_keyDown));
memset(m_keyDownPrev, 0, sizeof(m_keyDownPrev));
memset(m_keyPressedAccum, 0, sizeof(m_keyPressedAccum));
memset(m_keyReleasedAccum, 0, sizeof(m_keyReleasedAccum));
memset(m_keyPressed, 0, sizeof(m_keyPressed));
memset(m_keyReleased, 0, sizeof(m_keyReleased));
memset(m_mouseButtonDown, 0, sizeof(m_mouseButtonDown));
memset(m_mouseButtonDownPrev, 0, sizeof(m_mouseButtonDownPrev));
memset(m_mouseBtnPressedAccum, 0, sizeof(m_mouseBtnPressedAccum));
memset(m_mouseBtnReleasedAccum, 0, sizeof(m_mouseBtnReleasedAccum));
memset(m_mouseBtnPressed, 0, sizeof(m_mouseBtnPressed));
memset(m_mouseBtnReleased, 0, sizeof(m_mouseBtnReleased));
m_mouseDeltaX = 0;
m_mouseDeltaY = 0;
m_mouseDeltaAccumX = 0;
m_mouseDeltaAccumY = 0;
m_mouseWheelAccum = 0;
m_mouseWheelConsumed = false;
}
void KeyboardMouseInput::Tick()
{
memcpy(m_keyDownPrev, m_keyDown, sizeof(m_keyDown));
memcpy(m_mouseButtonDownPrev, m_mouseButtonDown, sizeof(m_mouseButtonDown));
memcpy(m_keyPressed, m_keyPressedAccum, sizeof(m_keyPressedAccum));
memcpy(m_keyReleased, m_keyReleasedAccum, sizeof(m_keyReleasedAccum));
memset(m_keyPressedAccum, 0, sizeof(m_keyPressedAccum));
memset(m_keyReleasedAccum, 0, sizeof(m_keyReleasedAccum));
memcpy(m_mouseBtnPressed, m_mouseBtnPressedAccum, sizeof(m_mouseBtnPressedAccum));
memcpy(m_mouseBtnReleased, m_mouseBtnReleasedAccum, sizeof(m_mouseBtnReleasedAccum));
memset(m_mouseBtnPressedAccum, 0, sizeof(m_mouseBtnPressedAccum));
memset(m_mouseBtnReleasedAccum, 0, sizeof(m_mouseBtnReleasedAccum));
m_mouseDeltaX = m_mouseDeltaAccumX;
m_mouseDeltaY = m_mouseDeltaAccumY;
m_mouseDeltaAccumX = 0;
m_mouseDeltaAccumY = 0;
m_mouseWheelConsumed = false;
m_hasInput = (m_mouseDeltaX != 0 || m_mouseDeltaY != 0 || m_mouseWheelAccum != 0);
if (!m_hasInput)
{
for (int i = 0; i < MAX_KEYS; i++)
{
if (m_keyDown[i]) { m_hasInput = true; break; }
}
}
if (!m_hasInput)
{
for (int i = 0; i < MAX_MOUSE_BUTTONS; i++)
{
if (m_mouseButtonDown[i]) { m_hasInput = true; break; }
}
}
if ((m_mouseGrabbed || m_cursorHiddenForUI) && g_hWnd)
{
RECT rc;
GetClientRect(g_hWnd, &rc);
POINT center;
center.x = (rc.right - rc.left) / 2;
center.y = (rc.bottom - rc.top) / 2;
ClientToScreen(g_hWnd, ¢er);
SetCursorPos(center.x, center.y);
}
}
void KeyboardMouseInput::OnKeyDown(int vkCode)
{
if (vkCode >= 0 && vkCode < MAX_KEYS)
{
if (!m_keyDown[vkCode])
m_keyPressedAccum[vkCode] = true;
m_keyDown[vkCode] = true;
}
}
void KeyboardMouseInput::OnKeyUp(int vkCode)
{
if (vkCode >= 0 && vkCode < MAX_KEYS)
{
if (m_keyDown[vkCode])
m_keyReleasedAccum[vkCode] = true;
m_keyDown[vkCode] = false;
}
}
void KeyboardMouseInput::OnMouseButtonDown(int button)
{
if (button >= 0 && button < MAX_MOUSE_BUTTONS)
{
if (!m_mouseButtonDown[button])
m_mouseBtnPressedAccum[button] = true;
m_mouseButtonDown[button] = true;
}
}
void KeyboardMouseInput::OnMouseButtonUp(int button)
{
if (button >= 0 && button < MAX_MOUSE_BUTTONS)
{
if (m_mouseButtonDown[button])
m_mouseBtnReleasedAccum[button] = true;
m_mouseButtonDown[button] = false;
}
}
void KeyboardMouseInput::OnMouseMove(int x, int y)
{
m_mouseX = x;
m_mouseY = y;
}
void KeyboardMouseInput::OnMouseWheel(int delta)
{
// Normalize from raw Windows delta (multiples of WHEEL_DELTA=120) to discrete notch counts
m_mouseWheelAccum += delta / WHEEL_DELTA;
}
int KeyboardMouseInput::GetMouseWheel()
{
int val = m_mouseWheelAccum;
if (val != 0)
m_mouseWheelConsumed = true;
m_mouseWheelAccum = 0;
return val;
}
void KeyboardMouseInput::OnRawMouseDelta(int dx, int dy)
{
m_mouseDeltaAccumX += dx;
m_mouseDeltaAccumY += dy;
}
bool KeyboardMouseInput::IsKeyDown(int vkCode) const
{
if (vkCode == VK_SHIFT || vkCode == VK_CONTROL || vkCode == VK_MENU)
return IsModifierKeyDown(m_keyDown, vkCode);
if (vkCode >= 0 && vkCode < MAX_KEYS)
return m_keyDown[vkCode];
return false;
}
bool KeyboardMouseInput::IsKeyPressed(int vkCode) const
{
if (vkCode == VK_SHIFT || vkCode == VK_CONTROL || vkCode == VK_MENU)
return IsModifierKeyDown(m_keyPressed, vkCode);
if (vkCode >= 0 && vkCode < MAX_KEYS)
return m_keyPressed[vkCode];
return false;
}
bool KeyboardMouseInput::IsKeyReleased(int vkCode) const
{
if (vkCode == VK_SHIFT || vkCode == VK_CONTROL || vkCode == VK_MENU)
return IsModifierKeyDown(m_keyReleased, vkCode);
if (vkCode >= 0 && vkCode < MAX_KEYS)
return m_keyReleased[vkCode];
return false;
}
bool KeyboardMouseInput::IsMouseButtonDown(int button) const
{
if (button >= 0 && button < MAX_MOUSE_BUTTONS)
return m_mouseButtonDown[button];
return false;
}
bool KeyboardMouseInput::IsMouseButtonPressed(int button) const
{
if (button >= 0 && button < MAX_MOUSE_BUTTONS)
return m_mouseBtnPressed[button];
return false;
}
bool KeyboardMouseInput::IsMouseButtonReleased(int button) const
{
if (button >= 0 && button < MAX_MOUSE_BUTTONS)
return m_mouseBtnReleased[button];
return false;
}
void KeyboardMouseInput::ConsumeMouseDelta(float &dx, float &dy)
{
dx = (float)m_mouseDeltaAccumX;
dy = (float)m_mouseDeltaAccumY;
m_mouseDeltaAccumX = 0;
m_mouseDeltaAccumY = 0;
}
void KeyboardMouseInput::SetMouseGrabbed(bool grabbed)
{
if (m_mouseGrabbed == grabbed)
return;
m_mouseGrabbed = grabbed;
if (grabbed && g_hWnd)
{
while (ShowCursor(FALSE) >= 0) {}
ClipCursorToWindow(g_hWnd);
RECT rc;
GetClientRect(g_hWnd, &rc);
POINT center;
center.x = (rc.right - rc.left) / 2;
center.y = (rc.bottom - rc.top) / 2;
ClientToScreen(g_hWnd, ¢er);
SetCursorPos(center.x, center.y);
m_mouseDeltaAccumX = 0;
m_mouseDeltaAccumY = 0;
}
else if (!grabbed && !m_cursorHiddenForUI && g_hWnd)
{
while (ShowCursor(TRUE) < 0) {}
ClipCursor(NULL);
}
}
void KeyboardMouseInput::SetCursorHiddenForUI(bool hidden)
{
if (m_cursorHiddenForUI == hidden)
return;
m_cursorHiddenForUI = hidden;
if (hidden && g_hWnd)
{
while (ShowCursor(FALSE) >= 0) {}
ClipCursorToWindow(g_hWnd);
RECT rc;
GetClientRect(g_hWnd, &rc);
POINT center;
center.x = (rc.right - rc.left) / 2;
center.y = (rc.bottom - rc.top) / 2;
ClientToScreen(g_hWnd, ¢er);
SetCursorPos(center.x, center.y);
m_mouseDeltaAccumX = 0;
m_mouseDeltaAccumY = 0;
}
else if (!hidden && !m_mouseGrabbed && g_hWnd)
{
while (ShowCursor(TRUE) < 0) {}
ClipCursor(NULL);
}
}
static void ClipCursorToWindow(HWND hWnd)
{
if (!hWnd) return;
RECT rc;
GetClientRect(hWnd, &rc);
POINT topLeft = { rc.left, rc.top };
POINT bottomRight = { rc.right, rc.bottom };
ClientToScreen(hWnd, &topLeft);
ClientToScreen(hWnd, &bottomRight);
RECT clipRect = { topLeft.x, topLeft.y, bottomRight.x, bottomRight.y };
ClipCursor(&clipRect);
}
void KeyboardMouseInput::SetWindowFocused(bool focused)
{
m_windowFocused = focused;
if (focused)
{
if (m_mouseGrabbed || m_cursorHiddenForUI)
{
while (ShowCursor(FALSE) >= 0) {}
ClipCursorToWindow(g_hWnd);
}
else
{
while (ShowCursor(TRUE) < 0) {}
ClipCursor(NULL);
}
}
else
{
while (ShowCursor(TRUE) < 0) {}
ClipCursor(NULL);
}
}
float KeyboardMouseInput::GetMoveX() const
{
float x = 0.0f;
if (m_keyDown[KEY_LEFT]) x += 1.0f;
if (m_keyDown[KEY_RIGHT]) x -= 1.0f;
return x;
}
float KeyboardMouseInput::GetMoveY() const
{
float y = 0.0f;
if (m_keyDown[KEY_FORWARD]) y += 1.0f;
if (m_keyDown[KEY_BACKWARD]) y -= 1.0f;
return y;
}
float KeyboardMouseInput::GetLookX(float sensitivity) const
{
return (float)m_mouseDeltaX * sensitivity;
}
float KeyboardMouseInput::GetLookY(float sensitivity) const
{
return (float)(-m_mouseDeltaY) * sensitivity;
}
#endif // _WINDOWS64
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