i want to make side scrolling shooter game. if player get a companion icon, player will get one companion. each ccompanion icon for one companion. i want limit for four companion. first companion will on the top player, the second on the below player, the third on top the first and the fourth on the below the second. Every companion will destroy if hit enemy bullet. Things that make me confused, if the first companion destroy or the third destroy and player once more get the companion icon how to make the new companion replace the companion which is destroyed ?