public void Enable()
{
p_Enabled = true;
p_Cursor.SetArrow(Direction.ALL);
}
private void updateMouse()
{
//pan active?
if (p_Pan.Enabled)
{
return;
}
if (
//control hijacked?
p_EventHijacker != null ||
//logic disabled?
p_LogicDisabled ||
//game has focus?
!p_Window.Focused ||
//arrow key?
p_ArrowKeyDown != ArrowKey.NONE ||
//clickdrag active?
p_ClickDrag.Enabled)
{
p_Cursor.SetArrow(Direction.NONE);
return;
}
//get the cursor position relative to the window content
Point mousePosition = PointToClient(Cursor.Position);
//is the mouse at the side of the screen so we move the camera?
int width = p_Window.Context.Width;
int height = p_Window.Context.Height;
int margin = 40;
int x = mousePosition.X;
int y = mousePosition.Y;
int step = 10;
int dX = 0, dY = 0;
//if the cursor exceeds the bounds of the window at all, we ignore
//the processing of moving the camera.
if (x < 0 || y < 0 || x > width || y > height)
{
return;
}
if (x < margin)
{
dX = -step;
}
if (y < margin)
{
dY = -step;
}
if (x > width - margin)
{
dX = step;
}
if (y > height - margin)
{
dY = step;
}
if (dX == 0 && dY == 0)
{
p_Cursor.SetArrow(Direction.NONE);
return;
}
//adjust cursor arrow direction according to change in camera
Direction direction = Direction.NONE;
if (dX < 0)
{
direction |= Direction.WEST;
}
if (dX > 0)
{
direction |= Direction.EAST;
}
if (dY < 0)
{
direction |= Direction.NORTH;
}
if (dY > 0)
{
direction |= Direction.SOUTH;
}
p_Cursor.SetArrow(direction);
//move camera
p_Camera.Move(dX, dY);
}
