objItem collision

/// @description

for (var i = 0; i < array_length(inv); ++i) {
    if (inv[i].cellType == objectTypes.any) {
        if (inv[i].id == noone
        or inv[i].id == other.object_index and inv[i].stack + other.quantity <= inv[i].maxStack)
        {
            inv[i].name = other.name;
            inv[i].id = other.object_index;
            inv[i].sprite = other.sprite_index;
            inv[i].type = other.type;
            inv[i].stack   += other.quantity;
            inv[i].maxStack = other.maxStack;
            with other instance_destroy();
            break;
        }
        else if (inv[i].id == other.object_index and inv[i].stack + other.quantity > inv[i].maxStack) {
            other.quantity -= inv[i].maxStack - inv[i].stack;
            inv[i].stack = inv[i].maxStack;
        }
    }
    else if other.type == inv[i].cellType {
        if inv[i].id == noone {
            inv[i].name = other.name;
            inv[i].id = other.object_index;
            inv[i].sprite = other.sprite_index;
            inv[i].type = other.type;
            inv[i].stack    = 1;
            inv[i].maxStack = other.maxStack;
            other.quantity -= 1;
            if (other.quantity <= 0) with other instance_destroy();
            break;
        }
    }
}
event_user(3);