private nothing initRecipe()
{
    gg_trg_recipe_lib = CreateTrigger()
    integer i = 0
    loop
    {
        TriggerRegisterPlayerUnitEvent(gg_trg_recipe_lib, Player(i), EVENT_PLAYER_UNIT_PICKUP_ITEM, null)
        TriggerAddAction(gg_trg_recipe_lib, function recipeAction)
        i += 1
        exitwhen( i==bj_MAX_PLAYER_SLOTS )
    }
}