So, I've been working on a game for a while and I've chosen verge3.
So, I have to create an inventory system - at first, I thought something like a unique position for each item, when acquired (for example "torch" is in the fourth position in any case). But this was a pretty weird system, and also I had to keep track of the inventory in every moment to avoid an item to overlap another, creating cosmic errors.
Then, I switched (in my ideal concept) to a stack system: when an item is acquired, it is put in the first free index (or, better, the first index that has a "0" value). I'm not particularly interested in shifting by one index every item when an item is removed from the inventory, it would be cool but I'm not really interested.
So. I've created an int array with 78 as size, but seems I haven't enough knowledge to create a stack system that works :|...I haven't figured it yet.
I know this forum seems pretty inactive at the moment...but still...
(Also sorry for every mistakes I'm not native English).

Yes, VergeC (verge3). Since then, I've only made a few progresses (mostly because I had to study). I found out how to put items in there and pushing each time the last (after working with the array a bit). When I have to remove an item, it glitches horribly, and I've still haven't found out how to fix it (I worked only a bit in the last month - again, I had to study for an exam).
Should I post some code?

Firstly, thanks a lot for helping me :D

#define ELEMENTO 78 //i have to admit this line is pretty dumb but still
int inventory[ELEMENTO] //the inventory array;
int inventory_positions[ELEMENTO] //positions of the item in the array;
int volte = 0;
int top = 0;
string inv_array = "inventory";
string pos_array = "inventory_position";
void inventory_routine(){ //I feel I can just delete this :|
for (volte = 0; volte<78; volte++){ 
SetIntArray(pos_array, volte, 0);
}
}
void inventory_get(int item_index){
//when an item is acquired, it is placed in the last free (=0) index of the array, and then pushes the last place available
SetIntArray(inv_array, top, item_index); //sets the item in the array
SetIntArray(pos_array, item_index, top); //remembers position of the acquired item in pos_array 
top += 1; //increases last place available. I think it has to be last
}
void inventory_take(int item_index){
//I want the item to be removed from the array and then, the last place, pushed 
int local_position;
int following;
int scorrimento = 0; //"scorrimento" means scrolling, I used that name because "scrolling" already exists somewhere else
int item_index_temp;
if (top > 1) {//I scrapped, edited and then I got this. It needs a loop 
local_position = GetIntArray(pos_array, item_index); 
following = GetIntArray(inv_array, (local_position + 1));
item_index_temp = item_index;
while (scorrimento<(78 - item_index + 1)){
SetIntArray(inv_array, local_position, following); 
SetIntArray(pos_array, following, local_position);
item_index_temp = following;
local_position = GetIntArray(pos_array, item_index_temp); 
following = GetIntArray(inv_array, (local_position + 1));
scorrimento +=1;
SetIntArray(inv_array, top, 0);
top -= 1;
}
}
if (top = 1) { //this works if there is only 1 item left
SetIntArray(inv_array, 0, 0);
SetIntArray(pos_array, item_index, 0);
top = 0;
}
SetIntArray(pos_array, item_index, 0);
}

It glitches...it changes indices of the array without control, adding the whole row of items instead of pushing, and stuff. I tend to mix variables names, they are both in Italian and English, sorry. I am confused.
I am a dumb guy, sadly. Right now, the script removes ALL the items in the array.
There is something I still can't get.
Again, thanks in advance.

To be honest, I haven't tried it yet, but I appreciate very much the help you have provided. When I'll be able to I'll reply or edit, ok?
Thanks again.

Oh yeah I'm back on it.
I've tried the suggested change, but several stuff happens instead. Now, it doesn't remove every item...but weird things happens: Items switch with others, and other things.