// Keys WASD RF Left/Right/Up/Down/PageUp/Down with none or shift or ctrl
private bool PositionKeyboard(KeyboardMonitor kbd, bool inperspectivemode, float movedistance)
{
Vector3 positionMovement = Vector3.Zero;
if (kbd.Shift)
{
movedistance *= 2.0F;
}
if (kbd.HasBeenPressed(Keys.M, KeyboardMonitor.ShiftState.Ctrl))
{
YHoldMovement = !YHoldMovement;
}
if (kbd.IsCurrentlyPressed(Keys.Left, Keys.A) != null) // x axis
{
positionMovement.X = -movedistance;
}
else if (kbd.IsCurrentlyPressed(Keys.Right, Keys.D) != null)
{
positionMovement.X = movedistance;
}
if (kbd.IsCurrentlyPressed(Keys.PageUp, Keys.R) != null) // y axis
{
positionMovement.Y = movedistance;
}
else if (kbd.IsCurrentlyPressed(Keys.PageDown, Keys.F) != null)
{
positionMovement.Y = -movedistance;
}
if (kbd.IsCurrentlyPressed(Keys.Up, Keys.W) != null) // z axis
{
positionMovement.Z = movedistance;
}
else if (kbd.IsCurrentlyPressed(Keys.Down, Keys.S) != null)
{
positionMovement.Z = -movedistance;
}
if (positionMovement.LengthSquared > 0)
{
if (inperspectivemode)
{
Vector2 cameraDir = CameraDirection;
if (YHoldMovement) // Y hold movement means only the camera rotation around the Y axis is taken into account.
{
var cameramove = Matrix4.CreateTranslation(positionMovement);
var rotY = Matrix4.CreateRotationY(cameraDir.Y.Radians()); // rotate by Y, which is rotation around the Y axis, which is where your looking at horizontally
cameramove *= rotY;
Translate(cameramove.ExtractTranslation());
}
else
{
var cameramove = Matrix4.CreateTranslation(new Vector3(positionMovement.X, positionMovement.Z, -positionMovement.Y));
cameramove *= Matrix4.CreateRotationZ(CameraRotation.Radians()); // rotate the translation by the camera look angle
cameramove *= Matrix4.CreateRotationX(cameraDir.X.Radians());
cameramove *= Matrix4.CreateRotationY(cameraDir.Y.Radians());
Translate(cameramove.ExtractTranslation());
}
}
else
{
positionMovement.Y = 0;
Translate(positionMovement);
}
return(true);
}
else
{
return(false);
}
}