<?php

namespace App\System;

use App\Voxel\ChunkAllocator;

use GL\Math\{GLM, Quat, Vec2, Vec3};

use VISU\ECS\EntitiesInterface;

use VISU\ECS\SystemInterface;

use VISU\Graphics\Camera;

use VISU\Graphics\GLState;

use VISU\Graphics\Rendering\RenderContext;

class VoxelSystem implements SystemInterface

{

private ChunkAllocator $chunkAllocator;

public function __construct(

private GLState $gl,

)

{

$this->chunkAllocator = new ChunkAllocator($gl);

}

/**

* Registers the system, this is where you should register all required components.

*

* @return void

*/

public function register(EntitiesInterface $entities) : void

{

$entities->setSingleton($this->chunkAllocator);

// load the first 2k chunks

// $this->chunkAllocator->renderDistance = 8;

// $this->chunkAllocator->ensureChunksLoaded(0, 0, 0, 4096);

// $this->chunkAllocator->renderDistance = 8;

$this->chunkAllocator->renderDistance = 4;

$this->chunkAllocator->ensureChunksLoaded(0, 0, 0, 4096);

}

/**

* Unregisters the system, this is where you can handle any cleanup.

*

* @return void

*/

public function unregister(EntitiesInterface $entities) : void

{

}

/**

* Updates handler, this is where the game state should be updated.

*

* @return void

*/

public function update(EntitiesInterface $entities) : void

{

$cameraEntity = $entities->first(Camera::class);

$this->chunkAllocator->ensureChunksLoaded(

$cameraEntity->transform->position->x,

$cameraEntity->transform->position->y,

$cameraEntity->transform->position->z

);

}

/**

* Handles rendering of the scene, here you can attach additional render passes,

* modify the render pipeline or customize rendering related data.

*

* @param RenderContext $context

*/

public function render(EntitiesInterface $entities, RenderContext $context) : void

{

}

}