Same world generates every time

Hello, I'm having an issue where PocketMine will generate the same world every time, no matter the seed. I have tried re installing, and deleting the world.
Version of PocketMine: 3.4.1
Version of PHP: 7.2

 

Didn't have that option enabled in the pocketmine.yml, but i turned it on and tried with the same seed, still just generates the same world over and over sadly, looks like a world from a version of mcpe a long time ago

EDIT:
looks like this guy had the same issue, although this thread is from a long time ago
https://forums.pmmp.io/threads/world-generator-help.3674/

 

Delete pocketmine.yml i had this problem once and it didnt generate same level after i deleted it

 

Still generates the same world for me sadly

Running windows 10 Pro, PHP 7.2, PocketMine 3.4.1
CPU: i7 7700k
RAM: 16GB
Other specs don't affect this i don't think

 

Completely fresh server, It doesn't seem to generate a world, just see there isn't one and then prepare spawn area.
First run console output: https://pastebin.com/SFmsDpPU

 

Run Number, Seed
1, 599392444
2, 114766711
3, 1986277008
4, -1850566109
5, 1138979751

 

At first i thought it was block to block identical, as every world looked identical. but after testing, (teleported myself to 1 65 1) after making a new world a few times, it seems i was wrong, i assumed it was the same world because i could nearly always see every biome close together, and the desert biome doesnt have any cactus, and there are no flowers at all, so it looked like a world from a previous mcpe version.
Is that normal?

EDIT: its almost as if the biome layout is the same everytime, but the terain is slightly different

 

PocketMine worlds are very repetitive. I implemented the noise generator from nukkit and the world immediately looked somewhat (a lot) closer to vanilla. The Random class is working just fine, I tested it a lot. Could be that the strange ellipse biomes are caused by BiomeSelector and the way it "precalculates" the biomes.

PHP:

public function recalculate() : void{
        $this->map = new \SplFixedArray(64 * 64);

        for($i = 0; $i < 64; ++$i){
            for($j = 0; $j < 64; ++$j){
                $biome = Biome::getBiome($this->lookup($i / 63, $j / 63));
                if($biome instanceof UnknownBiome){
                    throw new \RuntimeException("Unknown biome returned by selector with ID " . $biome->getId());
                }
                $this->map[$i + ($j << 6)] = $biome;
            }
        }
    }


As @dktapps said: "The terrain generator is currently very basic". Take example this

PHP:

// Inside pocketmine/generator/object/Tree.php
case WoodType::DARK_OAK:
                return; //TODO
            default:
                $tree = new OakTree();
                /*if($random->nextRange(0, 9) === 0){
                    $tree = new BigTree();
                }else{*/

                //}
                break;


Even basis of tree generation is not done.

And this is how many biomes are currently in pmmp world

PHP:

self::register(self::OCEAN, new OceanBiome());
        self::register(self::PLAINS, new PlainBiome());
        self::register(self::DESERT, new DesertBiome());
        self::register(self::MOUNTAINS, new MountainsBiome());
        self::register(self::FOREST, new ForestBiome());
        self::register(self::TAIGA, new TaigaBiome());
        self::register(self::SWAMP, new SwampBiome());
        self::register(self::RIVER, new RiverBiome());

        self::register(self::ICE_PLAINS, new IcePlainsBiome());


        self::register(self::SMALL_MOUNTAINS, new SmallMountainsBiome());

        self::register(self::BIRCH_FOREST, new ForestBiome(ForestBiome::TYPE_BIRCH));


Note: no biome mutations.

Don't blame Simplex, it's working flawlessly