TRIGGERS:
HRon = Let horses appear.
HRoff = Let horses disappear.
HRwalk = Let horses to walk.
HRgallop = Let horses to run gallop.
HRcircle = Let horses to spin-run.
HRfront = Moves horses to front.
HRback = Moves horses to back.
HRleft = Moves horses to left.
HRright = Moves horses to right.