ItemFrame.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\tile\ItemFrame as TileItemFrame;
use pocketmine\block\utils\AnyFacingTrait;
use pocketmine\block\utils\SupportType;
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\ItemFrameAddItemSound;
use pocketmine\world\sound\ItemFrameRemoveItemSound;
use pocketmine\world\sound\ItemFrameRotateItemSound;
use function is_infinite;
use function is_nan;
use function lcg_value;
 
class ItemFrame extends Flowable{
    use AnyFacingTrait;
 
    public const ROTATIONS = 8;
 
    protected bool $hasMap = false; //makes frame appear large if set
 
    protected ?Item $framedItem = null;
    protected int $itemRotation = 0;
    protected float $itemDropChance = 1.0;
 
    protected function describeBlockOnlyState(RuntimeDataDescriber $w) : void{
        $w->facing($this->facing);
        $w->bool($this->hasMap);
    }
 
    public function readStateFromWorld() : Block{
        parent::readStateFromWorld();
        $tile = $this->position->getWorld()->getTile($this->position);
        if($tile instanceof TileItemFrame){
            $this->framedItem = $tile->getItem();
            if($this->framedItem->isNull()){
                $this->framedItem = null;
            }
            $this->itemRotation = $tile->getItemRotation() % self::ROTATIONS;
            $this->itemDropChance = $tile->getItemDropChance();
        }
 
        return $this;
    }
 
    public function writeStateToWorld() : void{
        parent::writeStateToWorld();
        $tile = $this->position->getWorld()->getTile($this->position);
        if($tile instanceof TileItemFrame){
            $tile->setItem($this->framedItem);
            $tile->setItemRotation($this->itemRotation);
            $tile->setItemDropChance($this->itemDropChance);
        }
    }
 
    public function getFramedItem() : ?Item{
        return $this->framedItem !== null ? clone $this->framedItem : null;
    }
 
    public function setFramedItem(?Item $item) : self{
        if($item === null || $item->isNull()){
            $this->framedItem = null;
            $this->itemRotation = 0;
        }else{
            $this->framedItem = clone $item;
        }
        return $this;
    }
 
    public function getItemRotation() : int{
        return $this->itemRotation;
    }
 
    public function setItemRotation(int $itemRotation) : self{
        $this->itemRotation = $itemRotation;
        return $this;
    }
 
    public function getItemDropChance() : float{
        return $this->itemDropChance;
    }
 
    public function setItemDropChance(float $itemDropChance) : self{
        if($itemDropChance < 0.0 || $itemDropChance > 1.0 || is_nan($itemDropChance) || is_infinite($itemDropChance)){
            throw new \InvalidArgumentException("Drop chance must be in range 0-1");
        }
        $this->itemDropChance = $itemDropChance;
        return $this;
    }
 
    public function hasMap() : bool{ return $this->hasMap; }
 
    public function setHasMap(bool $hasMap) : self{
        $this->hasMap = $hasMap;
        return $this;
    }
 
    public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null, array &$returnedItems = []) : bool{
        if($this->framedItem !== null){
            $this->itemRotation = ($this->itemRotation + 1) % self::ROTATIONS;
 
            $this->position->getWorld()->addSound($this->position, new ItemFrameRotateItemSound());
        }elseif(!$item->isNull()){
            $this->framedItem = $item->pop();
 
            $this->position->getWorld()->addSound($this->position, new ItemFrameAddItemSound());
        }else{
            return true;
        }
 
        $this->position->getWorld()->setBlock($this->position, $this);
 
        return true;
    }
 
    public function onAttack(Item $item, int $face, ?Player $player = null) : bool{
        if($this->framedItem === null){
            return false;
        }
        $world = $this->position->getWorld();
        if(lcg_value() <= $this->itemDropChance){
            $world->dropItem($this->position->add(0.5, 0.5, 0.5), clone $this->framedItem);
            $world->addSound($this->position, new ItemFrameRemoveItemSound());
        }
        $this->setFramedItem(null);
        $world->setBlock($this->position, $this);
        return true;
    }
 
    private function canBeSupportedAt(Block $block, int $face) : bool{
        return $block->getAdjacentSupportType($face) !== SupportType::NONE;
    }
 
    public function onNearbyBlockChange() : void{
        if(!$this->canBeSupportedAt($this, Facing::opposite($this->facing))){
            $this->position->getWorld()->useBreakOn($this->position);
        }
    }
 
    public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
        if(!$this->canBeSupportedAt($blockReplace, Facing::opposite($face))){
            return false;
        }
 
        $this->facing = $face;
 
        return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
    }
 
    public function getDropsForCompatibleTool(Item $item) : array{
        $drops = parent::getDropsForCompatibleTool($item);
        if($this->framedItem !== null && lcg_value() <= $this->itemDropChance){
            $drops[] = clone $this->framedItem;
        }
 
        return $drops;
    }
 
    public function getPickedItem(bool $addUserData = false) : Item{
        return $this->framedItem !== null ? clone $this->framedItem : parent::getPickedItem($addUserData);
    }
}