switch sprite_index
{
    case sItemMissile:
        scr_missile_create()
        break
    case sItemSuperMissile:
        scr_supermissile_create()
        break
    case sItemEnergyTank:
        scr_energytank_create()
        break
    case sItemPowerBomb:
        scr_powerbomb_create()
        break
}