///serverInventoryWriteAll(buffer, filename);
/*
used on player log in, sending the total contents of the inventory to the client
simply write all the items/count pairs to the player_buff
does not write the packet head, nor send the packet
Why does it have a buffer variable? Just in case(!) we want to use a different buffer
because if we want to send this in the middle of writing another buffer, we might
need a temp_buffer, like in monster step death code block.
*/
if (!file_exists(argument1))
{
    show_error("[Inventory] File '" + argument1 + "' does not exist to load.", 0);
    return 0;
}
var _buff = buffer_load(argument1);
var size = buffer_read(_buff, buffer_u16);
chatAdd("Server inventory size: " + string(size));
buffer_write(argument0, buffer_u16, size);
for (var i = 0; i < size; i++)
{
    var item = buffer_read(_buff, buffer_string);
    var count = buffer_read(_buff, buffer_u32);
    //show_debug_message("Load: " + item + "|" + string(count) + "}");
    buffer_write(argument0, buffer_string, item);
    buffer_write(argument0, buffer_u32, count);
}
buffer_delete(_buff);
return 1;