tposx[4] = tposx[3]
tposx[3] = tposx[2]
tposx[2] = tposx[1]
tposx[1] = tposx[0]
tposx[0] = x
tposy[4] = tposy[3]
tposy[3] = tposy[2]
tposy[2] = tposy[1]
tposy[1] = tposy[0]
tposy[0] = y