How and where to override Chunk.java?

[freeradicalx]

Hi, I'm porting my mod that generates roads across the overworld to Forge since I'd like for it to play nice with other mods. This is my first time working with Forge. The original mod modifies Chunk.java by adding a new variable called roadData to keep track of generated roads. How and where would I be able to achieve the same thing in Forge, since the idea is to not modify the base Minecraft classes? Or would I have to do something else entirely?

[ObsequiousNewt]

Create your own WorldGen. There are tutorials available.

[freeradicalx]

I understand how to make my own WorldGen, I can easily add methods that generate one-off structures during chunk generation. However a road is a continuous, potentially infinite curve that snakes through the world so it has to be generated chunk by chunk as the player explores: Only it's start or end can be one-off events. I achieved this functionality in the non-forge version of my mod by adding an array of three points to Chunk.java called roadData. If the chunk contained a point on a highway's curve, roadData would contain the coordinates of that point and of the two adjacent points, so that chunks generating nearby could detect it and see if they had to continue the roadway (And likewise determine the next point in the road's curve).

 

I can no longer edit Chunk.java if I'm to be forge compatible, and I don't know how I could do so by creating my own WorldGen. I'm not a newb but am by no means a master at this stuff, so some guidance would be totally appreciated. Thanks

[ObsequiousNewt]

Excuse me if I'm being dense, but why not just store those variables in your WorldGen, and put the check in generate()?

[freeradicalx]

Not dense at all, that's a great idea. I think that might have been my original plan, but I wasn't sure if data being stored in my WorldGen would get saved on exit the same way that data in Chunk instances do. Would I need do to anything special to make sure my road data saves if it's in the WorldGen or is that already taken care of by Minecraft?

[ObsequiousNewt]

Not dense at all, that's a great idea. I think that might have been my original plan, but I wasn't sure if data being stored in my WorldGen would get saved on exit the same way that data in Chunk instances do. Would I need do to anything special to make sure my road data saves if it's in the WorldGen or is that already taken care of by Minecraft?

Oh, I see. I suspect you would. I don't know much about this sort of thing, but I think you want to create an extension of WorldSavedData and then use world.perWorldStorage.setData("id",myWSD);

 

Of course, someone's going to tell me I'm wrong or there's a far more elegant way to do it, which I welcome.