Represents a screen touch event. Stores information about multi-touch press/release input events. Supports touch press, touch release and [member index] for multi-touch count and order. $DOCS_URL/tutorials/inputs/inputevent.html If [code]true[/code], the touch event has been canceled. If [code]true[/code], the touch's state is a double tap. The touch index in the case of a multi-touch event. One index = one finger. The touch position in the viewport the node is in, using the coordinate system of this viewport. If [code]true[/code], the touch's state is pressed. If [code]false[/code], the touch's state is released.