[Flamehaze7]

Since your english is not the best maybe i understood it the wrong way.
But here there are some checkpoints missing, if you want to do that "If player X goes on pickup X he gets checkpoint X"

Code:

if(CP[playerid] == 0)
    {
        CP[playerid] = 1;
        //YOUR CHECKPOINT HERE!
        DestroyPickup(Ship1);
    }

This for the other ones too.