Chunk reading API

[sathorn6]

I'm asking myself how the API to read chunks should look like. From my current understanding, they consist of messages like

• Entity X bought item Y on slot Z
• Entity X gains Y gold
• Entity X moves to x,y,z
• Update Entity X's inventory to Y (Sent on selling something)

So to make sense of these, you need a lot of game state, like which player is X, where is he, how much gold and what items does he currently have, which i think the lib should keep for you. But how do we expose this information back in a useful way?

[strangeglyph]

Sounds like an event-based system would be good here (function pointers yay)

[lukegb]

• Raw layer - just spits out individual events, one at a time, parsed?
• Helper layer - allows you to seek to a time (somehow) and make queries about the state of play at that point - peoples inventories, etc. We manage all the state and handle jumping to a keyframe and applying all the events onwards.

[strangeglyph]

Just raw layer sounds good, with the option to start the parse at a certain point in time. The second option is basically a fully-featured replay client, seems out of scope for libol

[lukegb]

We should definitely have the former. The latter is something I'd like to have after the first is done - it's probably what most people will want, since being able to play forwards in time and see the state change without worrying about the underlying messages (which might change!) is useful.

[toulouse]

+1 Emitting events Parsing this in a stateful way can be the job of something wrapping libOL, or libOL can add it later, but it's definitely more advanced usage suitable for a later iteration.

[themasch]

:+1: for events. everyone loves events!