/// <summary>
/// Check if current window handler is still valid (if another window cover the visual of this window, it must not be used as window)
/// </summary>
/// <param name="bCheck">Check if it is still valid. Set false if window is not proofed, true if pet is already walking on a window => check if window is still valid.</param>
/// <returns>True if window is still valid and present. False if window is not anymore there.</returns>
/// <seealso cref="NativeMethods.GetWindow(IntPtr, int)"/>
/// <seealso cref="NativeMethods.GetTitleBarInfo(IntPtr, ref NativeMethods.TITLEBARINFO)"/>
private bool CheckTopWindow(bool bCheck)
{
// Check only if we have a valid window handler
if ((int)hwndWindow != 0)
{
NativeMethods.RECT rctO;
NativeMethods.RECT rct;
// Get window size and position of the current pet
NativeMethods.GetWindowRect(new HandleRef(this, hwndWindow), out rctO);
// If pet was walking on a window, check if window is still in the same position
if (bCheck)
{
if (rctO.Top > dPosY + Height + 2)
{
return(true);
}
else if (rctO.Top < dPosY + Height - 2)
{
return(true);
}
else if (rctO.Left > dPosX + Width - 5)
{
return(true);
}
else if (rctO.Right < dPosX + 5)
{
return(true);
}
}
// Get more informations about the current window title bar
NativeMethods.TITLEBARINFO titleBarInfo = new NativeMethods.TITLEBARINFO();
titleBarInfo.cbSize = Marshal.SizeOf(titleBarInfo);
// Get the handle to the next window (to user visual, in Z-order)
IntPtr hwnd2 = NativeMethods.GetWindow(hwndWindow, 3);
// Loop until there are windows over the current window (in Z-Order)
while (hwnd2 != (IntPtr)0)
{
StringBuilder sTitle = new StringBuilder(128);
NativeMethods.GetWindowText(hwnd2, sTitle, 128);
// If window has a title bar
if (NativeMethods.GetTitleBarInfo(hwnd2, ref titleBarInfo))
{
// If window has a title name and a valid size and is not fullscreen
if (sTitle.Length > 0 &&
NativeMethods.GetWindowRect(new HandleRef(this, hwnd2), out rct) &&
(titleBarInfo.rcTitleBar.Bottom > 0 || sTitle.ToString() == "sheep"))
{
if (rct.Top < rctO.Top && rct.Bottom > rctO.Top)
{
if (rct.Left < dPosX && rct.Right > dPosX + 40 && iAnimationStep > 4)
{
return(true);
}
}
}
}
// Get the handle to the next window (to user visual, in Z-order)
hwnd2 = NativeMethods.GetWindow(hwnd2, 3);
}
}
return(false);
}
/// <summary>
/// Detect if pet is still falling or if taskbar/window was detected.
/// </summary>
/// <param name="y">Y moves in pixels for the next step (function will detect if window/taskbar is inside the movement).</param>
/// <returns>Y position of the window or taskbar. -1 if pet is still falling.</returns>
private int FallDetect(int y)
{
NativeMethods.RECT rct;
Dictionary <IntPtr, string> windows = new Dictionary <IntPtr, string>();
NativeMethods.TITLEBARINFO titleBarInfo = new NativeMethods.TITLEBARINFO();
titleBarInfo.cbSize = Marshal.SizeOf(titleBarInfo);
// Enumerate all windows on the desktop.
NativeMethods.EnumWindows(delegate(IntPtr hWnd, int lParam)
{
if (hWnd == Handle)
{
return(true); // form itself, don't parse
}
// Enumerate only visible windows
if (NativeMethods.IsWindowVisible(hWnd))
{
StringBuilder sTitle = new StringBuilder(128);
NativeMethods.GetWindowText(hWnd, sTitle, 128);
// Sheep windows doesn't have a title bar, but we want detect if another pet is present
if (sTitle.ToString() == "Sheep")
{
}
// If there is no title bar, continue enumerating other windows
else if (!NativeMethods.GetTitleBarInfo(hWnd, ref titleBarInfo))
{
return(true);
}
// If title bar is not visible, continue enumerating other windows
else if ((titleBarInfo.rgstate[0] & 0x00008000) > 0)
{
return(true); // invisible
}
// If window has a title, add this window to list
if (sTitle.Length > 0)
{
windows[hWnd] = sTitle.ToString();
}
}
return(true);
}, (IntPtr)0);
// For each valid window found:
foreach (KeyValuePair <IntPtr, string> window in windows)
{
// Get size and position of window
if (NativeMethods.GetWindowRect(new HandleRef(this, window.Key), out rct))
{
// If vertical position is in the falling range and pet is over window and window is at least 20 pixels under the screen border
if (dPosY + Height < rct.Top && dPosY + Height + y >= rct.Top &&
dPosX >= rct.Left - Width / 2 && dPosX + Width <= rct.Right + Width / 2 &&
dPosY > 20 + Screen.PrimaryScreen.WorkingArea.Y)
{
// Pet need to walk over THIS window!
hwndWindow = window.Key;
// If window is not covered by other windows, set this as current window for the pet.
if (!CheckTopWindow(false))
{
//NativeMethods.ShowWindow(window.Key, 0); // hide window
NativeMethods.ShowWindow(window.Key, 5); // show window again
NativeMethods.SetForegroundWindow(window.Key); // set focus to window
return(rct.Top); // return the position for the pet
}
else
{
hwndWindow = (IntPtr)0; // window is covered by other windows, reset handle
}
}
}
}
return(-1); // no windows detected.
}