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Draco18s

New Scattered Features

By Draco18s, October 4, 2013 in Modder Support

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Draco18s    2414

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Posted October 4, 2013

Anyone have any experience with this?

 

I would like to add to world generation additional structures that are on the same level as pyramids and temples.  Other than having to build the code for the structure itself, what do I need to do to get this to happen in the cleanest way possible?

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Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

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Mazetar    271

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Posted October 4, 2013

Avoding the bunch of .setBlock's and instead use schematics for the structures is probably the best tip I could give you.

Tehbeards has a good API for loading schematics called LibSchematic [Link: https://github.com/tehbeard/LibSchematic], also check out his example of use in the LibSchematic.Sh which is also on github.

 

I believe you can do the generation just like you would for any other world gen, like trees and ores.

Check if it's the biome types you want, then do a simple check to see that it's ground and not air under the location of it's corner locations and place it.

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If you guys dont get it.. then well ya.. try harder...

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Draco18s    2414

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Posted October 4, 2013

ScatteredFeatures has code to insuring that they don't generate in neighboring chunks (cursory glance indicates minimum distance of 8 chunks, maximum 32 chunks).  Which implies that that code has some method of determining where other instances of it are.

 

That isn't going to be something I can replicate with an IWorldProvider.

 

Avoding the bunch of .setBlock's and instead use schematics for the structures is probably the best tip I could give you.

 

I was going to be designing via schematic anyway.  Then use a schematic -> Java converter I'd found (it was last updated for 1.3.2, but that is still sufficient to use replacement blocks, ie. "iron ore is my blockA, coal ore is my blockB...." so I could go in and replace blockID references)

I was unaware that there was a direct schematic loading API.  Neat.

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Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

DO NOT PM ME WITH PROBLEMS. No help will be given.

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Mazetar    271

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Posted October 4, 2013

The code from the java converters becomes rather messy, also they may hit the line limit for massive structures lol ^^

 

Aha I have no idea on how to easily implement ScatteredFeatures, my initial thoughts with saving the chunk coords in a list and checking against that is probably not the cleanest way to do that.

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If you guys dont get it.. then well ya.. try harder...

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Draco18s    2414

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Posted October 4, 2013

The code from the java converters becomes rather messy, also they may hit the line limit for massive structures lol ^^

 

I'm not making a massive structure.  The one converter I was looking at has a limit of...1500 blocks in a single segment.  Waaay more than I need. :)

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Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

DO NOT PM ME WITH PROBLEMS. No help will be given.

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vdvman1    12

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Posted October 4, 2013

You could have a look at how the eye of ender finds the stronghold to find the nearby structures

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Draco18s    2414

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Posted October 4, 2013

You could have a look at how the eye of ender finds the stronghold to find the nearby structures

 

The stronghold generator holds references to the three it creates and there's a special magical function in the IChunkProvider that allows retrieving that info.  Not really valid for a structure that isn't limited, nor does it work for arbitrary structures:

 

public ChunkPosition findClosestStructure(World par1World, String par2Str, int par3, int par4, int par5)
    {
        return "Stronghold".equals(par2Str) && this.strongholdGenerator != null ? this.strongholdGenerator.getNearestInstance(par1World, par3, par4, par5) : null;
    }

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Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

DO NOT PM ME WITH PROBLEMS. No help will be given.

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coolAlias    746

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Posted October 5, 2013

For structures such as villages and such, whenever one generates the chunk coordinates are stored in a map in MapGenStructure:

if (this.canSpawnStructureAtCoords(par2, par3))
{
     StructureStart structurestart = this.getStructureStart(par2, par3);
     this.structureMap.put(Long.valueOf(ChunkCoordIntPair.chunkXZ2Int(par2, par3)), structurestart);
     this.func_143026_a(par2, par3, structurestart);
}

This way the generator can check 'structureMap' to see if the coordinates currently generating already have a structure and, if so, skip it.

 

I'm sure you could do something similar for your scattered feature.

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width=228 height=100http://i.imgur.com/NdrFdld.png[/img]

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