Cleanup Entity age handling, fixed arrows despawning too quickly after long flight

src/pocketmine/entity/Entity.php

@@ -408,8 +408,6 @@ abstract class Entity extends Location implements Metadatable, EntityIds{
 	public $boundingBox;
 	/** @var bool */
 	public $onGround;
-	/** @var int */
-	protected $age = 0;
 
 	/** @var float */
 	public $eyeHeight = null;
@@ -1027,7 +1025,6 @@ abstract class Entity extends Location implements Metadatable, EntityIds{
 			}
 		}
 
-		$this->age += $tickDiff;
 		$this->ticksLived += $tickDiff;
 
 		return $hasUpdate;

src/pocketmine/entity/object/ExperienceOrb.php

@@ -88,6 +88,9 @@ class ExperienceOrb extends Entity{
 	public $gravity = 0.04;
 	public $drag = 0.02;
 
+	/** @var int */
+	protected $age = 0;
+
 	/**
 	 * @var int
 	 * Ticker used for determining interval in which to look for new target players.
@@ -159,6 +162,7 @@ class ExperienceOrb extends Entity{
 	public function entityBaseTick(int $tickDiff = 1) : bool{
 		$hasUpdate = parent::entityBaseTick($tickDiff);
 
+		$this->age += $tickDiff;
 		if($this->age > 6000){
 			$this->flagForDespawn();
 			return true;

src/pocketmine/entity/object/ItemEntity.php

@@ -53,6 +53,9 @@ class ItemEntity extends Entity{
 
 	public $canCollide = false;
 
+	/** @var int */
+	protected $age = 0;
+
 	protected function initEntity() : void{
 		parent::initEntity();
 
@@ -82,14 +85,13 @@ class ItemEntity extends Entity{
 
 		$hasUpdate = parent::entityBaseTick($tickDiff);
 
-		if(!$this->isFlaggedForDespawn()){
-			if($this->pickupDelay > 0 and $this->pickupDelay < 32767){ //Infinite delay
+		if(!$this->isFlaggedForDespawn() and $this->pickupDelay > -1 and $this->pickupDelay < 32767){ //Infinite delay
 			$this->pickupDelay -= $tickDiff;
 			if($this->pickupDelay < 0){
 				$this->pickupDelay = 0;
 			}
-			}
 
+			$this->age += $tickDiff;
 			if($this->age > 6000){
 				$this->server->getPluginManager()->callEvent($ev = new ItemDespawnEvent($this));
 				if($ev->isCancelled()){
@@ -99,7 +101,6 @@ class ItemEntity extends Entity{
 					$hasUpdate = true;
 				}
 			}
-
 		}
 
 		return $hasUpdate;

src/pocketmine/entity/projectile/Arrow.php

@@ -48,11 +48,24 @@ class Arrow extends Projectile{
 
 	protected $damage = 2;
 
+	/** @var int */
+	protected $collideTicks = 0;
+
 	public function __construct(Level $level, CompoundTag $nbt, ?Entity $shootingEntity = null, bool $critical = false){
 		parent::__construct($level, $nbt, $shootingEntity);
 		$this->setCritical($critical);
 	}
 
+	protected function initEntity() : void{
+		parent::initEntity();
+		$this->collideTicks = $this->namedtag->getShort("life", $this->collideTicks);
+	}
+
+	public function saveNBT() : void{
+		parent::saveNBT();
+		$this->namedtag->setShort("life", $this->collideTicks);
+	}
+
 	public function isCritical() : bool{
 		return $this->getGenericFlag(self::DATA_FLAG_CRITICAL);
 	}
@@ -77,10 +90,15 @@ class Arrow extends Projectile{
 
 		$hasUpdate = parent::entityBaseTick($tickDiff);
 
-		if($this->age > 1200){
+		if($this->isCollided){
+			$this->collideTicks += $tickDiff;
+			if($this->collideTicks > 1200){
 				$this->flagForDespawn();
 				$hasUpdate = true;
 			}
+		}else{
+			$this->collideTicks = 0;
+		}
 
 		return $hasUpdate;
 	}

src/pocketmine/entity/projectile/EnderPearl.php

@@ -66,7 +66,5 @@ class EnderPearl extends Throwable{
 
 			$owner->attack(new EntityDamageEvent($owner, EntityDamageEvent::CAUSE_FALL, 5));
 		}
-
-		$this->flagForDespawn();
 	}
 }

src/pocketmine/entity/projectile/ExperienceBottle.php

@@ -42,7 +42,5 @@ class ExperienceBottle extends Throwable{
 		$this->level->broadcastLevelSoundEvent($this, LevelSoundEventPacket::SOUND_GLASS);
 
 		$this->level->dropExperience($this, mt_rand(3, 11));
-
-		$this->flagForDespawn();
 	}
 }

src/pocketmine/entity/projectile/Projectile.php

@@ -73,7 +73,6 @@ abstract class Projectile extends Entity{
 
 		$this->setMaxHealth(1);
 		$this->setHealth(1);
-		$this->age = $this->namedtag->getShort("Age", $this->age);
 
 		do{
 			$blockHit = null;
@@ -123,8 +122,6 @@ abstract class Projectile extends Entity{
 	public function saveNBT() : void{
 		parent::saveNBT();
 
-		$this->namedtag->setShort("Age", $this->age);
-
 		if($this->blockHit !== null){
 			$this->namedtag->setInt("tileX", $this->blockHit->x);
 			$this->namedtag->setInt("tileY", $this->blockHit->y);

src/pocketmine/entity/projectile/SplashPotion.php

@@ -124,8 +124,6 @@ class SplashPotion extends Throwable{
 				}
 			}
 		}
-
-		$this->flagForDespawn();
 	}
 
 	/**

src/pocketmine/entity/projectile/Throwable.php

@@ -23,6 +23,9 @@ declare(strict_types=1);
 
 namespace pocketmine\entity\projectile;
 
+use pocketmine\block\Block;
+use pocketmine\math\RayTraceResult;
+
 abstract class Throwable extends Projectile{
 
 	public $width = 0.25;
@@ -31,18 +34,8 @@ abstract class Throwable extends Projectile{
 	protected $gravity = 0.03;
 	protected $drag = 0.01;
 
-	public function entityBaseTick(int $tickDiff = 1) : bool{
-		if($this->closed){
-			return false;
-		}
-
-		$hasUpdate = parent::entityBaseTick($tickDiff);
-
-		if($this->age > 1200 or $this->isCollided){
+	protected function onHitBlock(Block $blockHit, RayTraceResult $hitResult) : void{
+		parent::onHitBlock($blockHit, $hitResult);
 		$this->flagForDespawn();
-			$hasUpdate = true;
-		}
-
-		return $hasUpdate;
 	}
 }