Cursor speed

Changes how fast a player's view turns when they move the mouse. 0 freezes the view, 0.5 is half speed and 2 is double. There are two ways to set it, and they multiply together:

• the modify_cursor_speed power, for as long as the player has it and its condition is true
• the set_cursor_speed action, for a set time or until it's reset

It only changes mouse turning. Commands, set_rotation and look_at still turn the player at full speed. Both forms are ported from Overgrown's Apoli.