while True:
game.tholian.x = random.choice((0, QUADSIZE-1))
game.tholian.y = random.choice((0, QUADSIZE-1))
if game.quad[game.tholian.x][game.tholian.y] == IHDOT:
break
game.quad[game.tholian.x][game.tholian.y] = IHT
while True:
game.tholian.x = random.choice((0, QUADSIZE-1))
game.tholian.y = random.choice((0, QUADSIZE-1))
if game.quad[game.tholian.x][game.tholian.y] == IHDOT:
break
game.quad[game.tholian.x][game.tholian.y] = IHT