Solved Custom Generator, repeating structure

Not long ago @aliyuli created the empty world generator.
I also have to create a generator for my plugin.
Can you give me some basics how to create a custom generator?
For example, i will have a small structure and this structure will repeat after some blocks.. Is that even possible? What parameters does the generators class have?
Thanks in advance, Dan

Use $level->setBlockIdAt(new Vector3($x,$y,$z), Block::get($id));
(it's used for level generators)

It will only set one block or what?

Yes. It'll set only one block

not really a generator that set step by step one block ??? ...
i think this will be very slow...

btw look into Flat.php under Level->Generator

PHP:

<?php

/*
*
*  ____            _        _   __  __ _                  __  __ ____ 
* |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
* | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
* |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
* |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* @author PocketMine Team
* @link http://www.pocketmine.net/
*
*
*/

namespace pocketmine\level\generator;

use pocketmine\block\CoalOre;
use pocketmine\block\DiamondOre;
use pocketmine\block\Dirt;
use pocketmine\block\GoldOre;
use pocketmine\block\Gravel;
use pocketmine\block\IronOre;
use pocketmine\block\LapisOre;
use pocketmine\block\RedstoneOre;
use pocketmine\item\Item;
use pocketmine\level\ChunkManager;
use pocketmine\level\format\FullChunk;
use pocketmine\level\generator\biome\Biome;
use pocketmine\level\generator\populator\Ore;
use pocketmine\level\generator\populator\Populator;
use pocketmine\math\Vector3;
use pocketmine\utils\Random;

class Flat extends Generator{
    /** @var ChunkManager */
    private $level;
    /** @var FullChunk */
    private $chunk;
    /** @var Random */
    private $random;
    /** @var Populator[] */
    private $populators = [];
    private $structure, $chunks, $options, $floorLevel, $preset;

    public function getSettings(){
        return $this->options;
    }

    public function getName(){
        return "flat";
    }

    public function __construct(array $options = []){
        $this->preset = "2;7,2x3,2;1;";
        //$this->preset = "2;7,59x1,3x3,2;1;spawn(radius=10 block=89),decoration(treecount=80 grasscount=45)";
        $this->options = $options;
        $this->chunk = null;

        if(isset($this->options["decoration"])){
            $ores = new Ore();
            $ores->setOreTypes([
                new object\OreType(new CoalOre(), 20, 16, 0, 128),
                new object\OreType(New IronOre(), 20, 8, 0, 64),
                new object\OreType(new RedstoneOre(), 8, 7, 0, 16),
                new object\OreType(new LapisOre(), 1, 6, 0, 32),
                new object\OreType(new GoldOre(), 2, 8, 0, 32),
                new object\OreType(new DiamondOre(), 1, 7, 0, 16),
                new object\OreType(new Dirt(), 20, 32, 0, 128),
                new object\OreType(new Gravel(), 10, 16, 0, 128),
            ]);
            $this->populators[] = $ores;
        }

        /*if(isset($this->options["mineshaft"])){
            $this->populators[] = new MineshaftPopulator(isset($this->options["mineshaft"]["chance"]) ? floatval($this->options["mineshaft"]["chance"]) : 0.01);
        }*/
    }

    protected function parsePreset($preset, $chunkX, $chunkZ){
        $this->preset = $preset;
        $preset = explode(";", $preset);
        $version = (int) $preset[0];
        $blocks = isset($preset[1]) ? $preset[1] : "";
        $biome = isset($preset[2]) ? $preset[2] : 1;
        $options = isset($preset[3]) ? $preset[3] : "";
        preg_match_all('#^(([0-9]*x|)([0-9]{1,3})(|:[0-9]{0,2}))$#m', str_replace(",", "\n", $blocks), $matches);
        $y = 0;
        $this->structure = [];
        $this->chunks = [];
        foreach($matches[3] as $i => $b){
            $b = Item::fromString($b . $matches[4][$i]);
            $cnt = $matches[2][$i] === "" ? 1 : intval($matches[2][$i]);
            for($cY = $y, $y += $cnt; $cY < $y; ++$cY){
                $this->structure[$cY] = [$b->getId(), $b->getDamage()];
            }
        }

        $this->floorLevel = $y;

        for(; $y < 0xFF; ++$y){
            $this->structure[$y] = [0, 0];
        }


        $this->chunk = clone $this->level->getChunk($chunkX, $chunkZ);
        $this->chunk->setGenerated();
        $c = Biome::getBiome($biome)->getColor();
        $R = $c >> 16;
        $G = ($c >> 8) & 0xff;
        $B = $c & 0xff;

        for($Z = 0; $Z < 16; ++$Z){
            for($X = 0; $X < 16; ++$X){
                $this->chunk->setBiomeId($X, $Z, $biome);
                $this->chunk->setBiomeColor($X, $Z, $R, $G, $B);
                for($y = 0; $y < 128; ++$y){
                    $this->chunk->setBlock($X, $y, $Z, ...$this->structure[$y]);
                }
            }
        }


        preg_match_all('#(([0-9a-z_]{1,})\(?([0-9a-z_ =:]{0,})\)?),?#', $options, $matches);
        foreach($matches[2] as $i => $option){
            $params = true;
            if($matches[3][$i] !== ""){
                $params = [];
                $p = explode(" ", $matches[3][$i]);
                foreach($p as $k){
                    $k = explode("=", $k);
                    if(isset($k[1])){
                        $params[$k[0]] = $k[1];
                    }
                }
            }
            $this->options[$option] = $params;
        }
    }

    public function init(ChunkManager $level, Random $random){
        $this->level = $level;
        $this->random = $random;

        /*
          // Commented out : We want to delay this
        if(isset($this->options["preset"]) and $this->options["preset"] != ""){
            $this->parsePreset($this->options["preset"]);
        }else{
            $this->parsePreset($this->preset);
        }
        */
    }

    public function generateChunk($chunkX, $chunkZ){
        if($this->chunk === null) {
            if(isset($this->options["preset"]) and $this->options["preset"] != ""){
                $this->parsePreset($this->options["preset"], $chunkX, $chunkZ);
            }else{
                $this->parsePreset($this->preset, $chunkX, $chunkZ);
            }
        }
        $chunk = clone $this->chunk;
        $chunk->setX($chunkX);
        $chunk->setZ($chunkZ);
        $this->level->setChunk($chunkX, $chunkZ, $chunk);
    }

    public function populateChunk($chunkX, $chunkZ){
        $this->random->setSeed(0xdeadbeef ^ ($chunkX << 8) ^ $chunkZ ^ $this->level->getSeed());
        foreach($this->populators as $populator){
            $populator->populate($this->level, $chunkX, $chunkZ, $this->random);
        }

    }

    public function getSpawn(){
        return new Vector3(128, $this->floorLevel, 128);
    }
}


Take a look at the source of MyPlot by @wies. https://github.com/wiez/MyPlot

looks nice... but i need time to understand what uare doing there and how the generator works xD

Well, i like that code. I'll ask him, if i can modify it. Thanks alot to you all.

Now, after a while looking into the code i understand what the generator does. I'll try to rewrite the generator to support what i want. Thanks