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den3107

Member

From: Netherlands

Joined: 2015-04-24

Posts: 1,025

[Help] Room Data deserialization

First off:
I know there are libraries and such out there that already do it for me, but I just want to make it myself, though can't figure out how to get started.

I know the following:

▼Hidden text

What makes it a pain is not only the size, but also the fact it is written in byte arrays instead of integers, and without labels. In other words, once you convert the byte arrays to integers, the result looks something like this:

12 0 0 0 12 0 1 0 12 0 2 0 12 0 3 0 12 0 4 0 12 0 5 0 12 0 6 0 12 0 7 0...

The message is set up as follows: There is the block ID, followed by the layer, then the X and Y coordinates (in bytes, not integer). Then, if it is a unique block (meaning it has more info, such as rotation (spikes), destination (portals), or pitch (note blocks)), the added information comes after. As mentioned, all this information is unnamed, so it is easy to get off track.

Now mainly my question is: How to get the worldData from the init event converted into the int/byte array listed there and how to convert the x and y bytes into integers?

Oh, and why do I always see people use unsigned integers?

A link referring to all exceptional blocks with in which order they display what extra information would be appreciated too (Capasha's website only displays rotation).

capasha

Member

Joined: 2015-02-21

Posts: 4,066

Re: [Help] Room Data deserialization

Here you have an example how to do it, it's not updated and need special blocks and some init updates since version 191.
You can also choose to read the worlddata through the database, easier and not much updating when they change init. But the database read only saved worlds.