[General] Inventory Item-types Lock

[MojObi-Dos]

Hello All,

Right I have made an RPG map that has custom Weapons, Armor and Shields. What I am wanting to do is to somehow lock the inventory so that the player can only have 1 of these in their inventory at the same time.
(i.e Not allow the player to equip 2 swords, 2 shields etc)

I would like the first 3 slots in lockdown for them 3 item types but then have the remaining 3 slots free that the player can fill with healing or other items.

I'm unsure if this is trigger work or Item work but could you guys help me here, or provide a link to a tutorial?

Thanks

 

[tarik00555]

Just came to the forums to ask a similiar thing. I made a little JASS script that should drop an item from the inventory if there is already one of the same class in it. It is supposed to do that with Artifact and Campaign classes.

function manageItems takes nothing returns nothing
    local integer i = 0
    local unit triggerer = GetTriggerUnit()
    
    if GetItemType(GetManipulatedItem()) == ITEM_TYPE_ARTIFACT then
        loop
            if GetItemType(UnitItemInSlot(triggerer, i)) == ITEM_TYPE_ARTIFACT then
                call UnitRemoveItem(triggerer, GetManipulatedItem())
                call DisplayTextToPlayer(GetOwningPlayer(triggerer), 0.0, 0.0, GetUnitName(triggerer) + " can only carry one weapon.")
            endif
            
            set i = i + 1
            exitwhen i >= bj_MAX_INVENTORY
        endloop
    elseif GetItemType(GetManipulatedItem()) == ITEM_TYPE_CAMPAIGN then
        loop
            if GetItemType(UnitItemInSlot(triggerer, i)) == ITEM_TYPE_CAMPAIGN then
                call UnitRemoveItem(triggerer, GetManipulatedItem())
                call DisplayTextToPlayer(GetOwningPlayer(triggerer), 0.0, 0.0, GetUnitName(triggerer) + " can only carry one shield.")
            endif
            
            set i = i + 1
            exitwhen i >= bj_MAX_INVENTORY
        endloop
    endif
    
    set triggerer = null
endfunction

//===========================================================================
function InitTrig_Item_Managment takes nothing returns nothing
    local trigger itemManagment = CreateTrigger(  )
    call TriggerRegisterAnyUnitEventBJ( itemManagment, EVENT_PLAYER_UNIT_PICKUP_ITEM )
    call TriggerAddAction( itemManagment, function manageItems )
endfunction

But, sadly, lines 8 and 9(if I comment out line number 8) give a syntax error which I can't figure out.

I would like the first 3 slots in lockdown for them 3 item types but then have the remaining 3 slots free that the player can fill with healing or other items.

There is this function in JASS -

UnitAddItemToSlotById

. You can then use it when a unit gets an item remove it and add it to the slot you want. You can also make a loop to go through the last three slots.
You would also need a trigger that runs every 0.03 seconds or whatever to check if there is an weapon or armor in the first three slots and then either remove them and inform the player that they can't put a weapon or armor in the first three slots or if one of the last three slots is free remove the item and add it again in one of the three slots.

 

[Zwiebelchen]

But, sadly, lines 8 and 9(if I comment out line number 8) give a syntax error which I can't figure out.

Jass requires the "call" keyword in front of the functions that return nothing.

 

[tarik00555]

Jass requires the "call" keyword in front of the functions that return nothing.

... Opened the World Editor after not using it for several months and this is what happens I guess.

Thank you very much.

 

[MojObi-Dos]

Errr, I don't actually understand anything about JASS - would that be the only way or is there something with the GUI I could do?

 

[Maker]

http://www.hiveworkshop.com/forums/spells-569/jass-item-restriction-system-irs-v1-0f-232064/

 

[MojObi-Dos]

Thanks, Ill check that out.

 

[MojObi-Dos]

I've been trying that tutorial out but I'm not having much luck.
I am using custom items which from experimentation don't seem to work with this system, does anyone know how I could work around this?
(Iv sent a private message to the creator also but I thought id ask here as well)

I am viewing my custom items as raw data which display like 'l020:ratc' which I have tried to type into the RegisterRestrictedItem sections. When saving/testing the map throws me a script error 'Expected a valid argument list'.
I have tried 'l020' by itself which stops the script error appearing but doesn't do it as It looks like its referencing the original item. 'ratc' also doesn't work.

 

[Maker]

Post the custom script you use. Custom items should work just fine.

'ratc' is the one you should use.

 

[MojObi-Dos]

Oh right ok,
Yeah the custom script I was trying was ;

• Custom script: call IRS_RegisterRestrictedItem ('ratc', "Weapon", null, 0, 0, 0, 0, 0)

(also I'v noticed that if I only use the suffix part of the raw code, I have 2 items which have the same 'ratc' in them, so how could this work? :/)

It seems to get past that script error but it simply doesn't work in-game.

 

[MojObi-Dos]

note: As I only need it so that a unit cannot carry 2 of the same type of weapon and all my Heroes are melee characters I made it 0,0,0,0,0 on the custom script, I assume this is correct?

 

[Maker]

Sorry, I was thinking of default items.

With custom items you should use the 'I000' style code. Notice that the first letter is an i, not an l.

 

[MojObi-Dos]

Funny.. I thought I tried it with an i and an L already.. anyway it's working now, thanks