Button.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/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine\block;
 
use pocketmine\block\utils\AnyFacingTrait;
use pocketmine\data\runtime\RuntimeDataDescriber;
use pocketmine\item\Item;
use pocketmine\math\Facing;
use pocketmine\math\Vector3;
use pocketmine\player\Player;
use pocketmine\world\BlockTransaction;
use pocketmine\world\sound\RedstonePowerOffSound;
use pocketmine\world\sound\RedstonePowerOnSound;
 
abstract class Button extends Flowable{
    use AnyFacingTrait;
 
    protected bool $pressed = false;
 
    protected function describeBlockOnlyState(RuntimeDataDescriber $w) : void{
        $w->facing($this->facing);
        $w->bool($this->pressed);
    }
 
    public function isPressed() : bool{ return $this->pressed; }
 
    public function setPressed(bool $pressed) : self{
        $this->pressed = $pressed;
        return $this;
    }
 
    public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
        if($this->canBeSupportedAt($blockReplace, $face)){
            $this->facing = $face;
            return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
        }
        return false;
    }
 
    abstract protected function getActivationTime() : int;
 
    public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null, array &$returnedItems = []) : bool{
        if(!$this->pressed){
            $this->pressed = true;
            $world = $this->position->getWorld();
            $world->setBlock($this->position, $this);
            $world->scheduleDelayedBlockUpdate($this->position, $this->getActivationTime());
            $world->addSound($this->position->add(0.5, 0.5, 0.5), new RedstonePowerOnSound());
        }
 
        return true;
    }
 
    public function onScheduledUpdate() : void{
        if($this->pressed){
            $this->pressed = false;
            $world = $this->position->getWorld();
            $world->setBlock($this->position, $this);
            $world->addSound($this->position->add(0.5, 0.5, 0.5), new RedstonePowerOffSound());
        }
    }
 
    public function onNearbyBlockChange() : void{
        if(!$this->canBeSupportedAt($this, $this->facing)){
            $this->position->getWorld()->useBreakOn($this->position);
        }
    }
 
    private function canBeSupportedAt(Block $block, int $face) : bool{
        return $block->getAdjacentSupportType(Facing::opposite($face))->hasCenterSupport();
    }
}