Help with custom backpack for custom character.

[MrDoge124]

I'm trying to make a backpack for my custom character but I got this error.

 [string "../mods/Green's backpack/modmain.lua"]:25: attempt to index local 'player' (a nil value)
LUA ERROR stack traceback:
        ../mods/Green's backpack/modmain.lua(25,1)
        =(tail call) ?
        =[C] in function 'xpcall'
        scripts/mods.lua(131,1)
        scripts/mods.lua(709,1) in function 'SimPostInit'
        scripts/gamelogic.lua(688,1) in function 'DoInitGame'
        scripts/gamelogic.lua(789,1) in function 'cb'
        scripts/saveindex.lua(285,1)
        =[C] in function 'GetPersistentString'
        scripts/saveindex.lua(267,1) in function 'GetSaveDataFile'
        scripts/saveindex.lua(293,1) in function 'GetSaveData'

Anyone know whats going wrong?

modmain.lua

[Cunning fox]

You can try this:

function SimInit(player)
if player ~= nil then
	print("spawning item")
	local prefab = SpawnPrefab("green_backpack")
	player.components.inventory:GiveItem(prefab)
	end
end

But I don't know will it work or not.

[MrDoge124]

Where should I put this code? I'm not really sure.

in the modmain.lua file right?

or green_backpack?

Edited February 28, 2017 by MrDoge124

[MrDoge124]

I tried the code and figured out that I had to put it in modmain.lua and it got to the character select screen which is great!

But i got a new error when playing as the character that the back pack is meant for.

[string "scripts/components/inventory.lua"]:634: attempt to index local 'inst' (a nil value)
LUA ERROR stack traceback:
    scripts/components/inventory.lua:634 in (method) GiveItem (Lua) <633-766>
    scripts/prefabs/player_common.lua:1892 in (method) OnNewSpawn (Lua) <1888-1900>
    scripts/networking.lua:250 in () ? (Lua) <238-256>
    =[C]:-1 in (method) SendSpawnRequestToServer (C) <-1--1>
    scripts/mainfunctions.lua:1272 in (local) cb (Lua) <1270-1273>
    scripts/frontend.lua:531 in (method) DoFadingUpdate (Lua) <495-535>
    scripts/frontend.lua:583 in (method) Update (Lua) <543-695>
    scripts/update.lua:92 in () ? (Lua) <33-129>

I think it's something to do with the backpack trying to be in the inventory but it normally goes straight on the torso slot.

I not really sure. 

[RedHairedHero]

player = GLOBAL.ThePlayer

Right now your code uses player, but player on it's own doesn't exist. Just put in the code above before you call your SimInit function and it should work.

[Amalleus]

Could you also drop us your green_backpack.lua? GiveItem doesn't see the item which you gives to it as argument. probably SpawnPrefab doesn't summon your green_backpack

Edited March 2, 2017 by Amalleus

[Amalleus]

8 hours ago, RedHairedHero said:

player = GLOBAL.ThePlayer

Right now your code uses player, but player on it's own doesn't exist. Just put in the code above before you call your SimInit function and it should work.

This will refer to host. And AddSimPostInit initializes on current player itself

[RedHairedHero]

This post might give you a better idea on what to do and how to use AddSimPostInit like @Amalleus had mentioned above.

 

Edited March 2, 2017 by RedHairedHero

[MrDoge124]

On 3/2/2017 at 9:02 AM, Amalleus said:

Could you also drop us your green_backpack.lua?

Do you mean give the file?

if so here it is

green_backpack.lua

[MrDoge124]

I put player "= GLOBAL.ThePlayer" in the scripts...

[string "../mods/Green's backpack/scripts/prefabs/gr..."]:112: variable 'GLOBAL' is not declared
LUA ERROR stack traceback:
        =[C] in function 'error'
        scripts/strict.lua(23,1)
        ../mods/Green's backpack/scripts/prefabs/green_backpack.lua(112,1) in function 'fn'
        scripts/mainfunctions.lua(93,1)
        =(tail call) ?

It didn't work. I'm not sure whats going on with this one...

[RedHairedHero]

player = GLOBAL.ThePlayer should be in the modmain, not in the green_backpack.lua. Let me know if you get any other errors. If you want to provide the entire folder I can test it on my own and try to fix it if needed.

Edited March 28, 2017 by RedHairedHero

[MrDoge124]

I'm going to upload the files for you to have a look at as I'm less experienced in coding. 

 

green_backpack.zip