Backpack

02-21-2009, 01:43 AM

JASS:

library BackpackSys

globals                                
    private constant integer BackpackId = 'BAG1'
    //Change this to the ID of the backpack item in your map.
endglobals

private struct Data
    integer array ItemType[6]
    integer array Charges[6]
    integer array UserData[6]
    static method Create takes unit u returns Data
        local Data d = Data.create()
        local integer i = 0
        local item it
        local integer id
        loop
            set it = UnitItemInSlot(u, i)
            set id = GetItemTypeId(it)
            if GetSpellAbilityId() == BackpackId then
                set d.ItemType[i] = id
                set d.Charges[i] = GetItemCharges(it)
                set d.UserData[i] = GetItemUserData(it)
                call RemoveItem(it)
            else
                set d.ItemType[i] = 0
                set d.Charges[i] = 0
                set d.UserData[i] = 0
            endif
            set i = i + 1
            exitwhen i > 6
        endloop
        set it = null
        return d
    endmethod
endstruct

function ActivateBackpack takes unit whichUnit returns nothing
    local Data d1
    local Data d2 = GetUnitUserData(whichUnit)
    local integer i = 0
    local item it
    if GetSpellAbilityId() == BackpackId then
        set d1 = Data.Create(whichUnit)
        if d2 != 0 then
            loop
                if d2.ItemType[i] != 0  then
                    set it = UnitAddItemById(whichUnit, d2.ItemType[i])
                    call SetItemCharges(it, d2.Charges[i])
                    call SetItemUserData(it, d2.UserData[i])
                endif
                set i = i + 1
                exitwhen i > 6
            endloop
        endif
        call d2.destroy()
        call SetUnitUserData(whichUnit, d1)
    endif
    set it = null
endfunction

endlibrary

This is suppose to be on when a unit cast a spell (Backpack ability) , and then it takes the current items on the unit/hero slots and then move them to a "Backpack" and when the unit recast the spell , the items are taken out from the "Backpack" to the "hero".

So now the item switching back and forth works, now I need to know how do I use UnitProperties to give the hero/unit the mod when in the backpack.

Bug spotted, When I have 6 items at the hero and 6 at the backpack, and when I "switch" it , one item always seem to drop on the ground

02-22-2009, 01:12 AM	#2
wraithseeker	bump