Object: allItems
{
items: [item1, item2, item3, item4]
}

Item: item1
Item: item2
Item: item3
Item: item4

Player: {

Event: "Give Item" {
// Loops through all items in the items list of allItems
// If the player does not have the current item in the loop,
// gives the item to the player, and breaks the loop,
// so the player is only given one item instead of all

foreach(Item in allItems.items as item){
if (!hasItem(item)){
giveItem(item)
break;
}
}
}
}