Replaces the window's old sprite in the spritelayer's display list with the new one.
Needed to be called each time the window's sprite is being replaced, or else the previous one will be continued to be displayed without any updates.
See Implementation
Replaces the window's old sprite in the spritelayer's display list with the new one.
Needed to be called each time the window's sprite is being replaced, or else the previous one will be continued to be displayed without any updates.