diff --git a/src/event/block/BaseBlockChangeEvent.php b/src/event/block/BaseBlockChangeEvent.php
index 1c01e629c..224f5c123 100644
--- a/src/event/block/BaseBlockChangeEvent.php
+++ b/src/event/block/BaseBlockChangeEvent.php
@@ -33,11 +33,11 @@ use pocketmine\event\CancellableTrait;
 abstract class BaseBlockChangeEvent extends BlockEvent implements Cancellable{
 	use CancellableTrait;
 
-	private Block $newState;
-
-	public function __construct(Block $block, Block $newState){
+	public function __construct(
+		Block $block,
+		private Block $newState
+	){
 		parent::__construct($block);
-		$this->newState = $newState;
 	}
 
 	public function getNewState() : Block{
diff --git a/src/event/block/BlockBurnEvent.php b/src/event/block/BlockBurnEvent.php
index 96ddb6234..b3a554e72 100644
--- a/src/event/block/BlockBurnEvent.php
+++ b/src/event/block/BlockBurnEvent.php
@@ -33,12 +33,11 @@ use pocketmine\event\CancellableTrait;
 class BlockBurnEvent extends BlockEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Block */
-	private $causingBlock;
-
-	public function __construct(Block $block, Block $causingBlock){
+	public function __construct(
+		Block $block,
+		private Block $causingBlock
+	){
 		parent::__construct($block);
-		$this->causingBlock = $causingBlock;
 	}
 
 	/**
diff --git a/src/event/block/BlockSpreadEvent.php b/src/event/block/BlockSpreadEvent.php
index bd2517d19..34f9585a1 100644
--- a/src/event/block/BlockSpreadEvent.php
+++ b/src/event/block/BlockSpreadEvent.php
@@ -29,12 +29,13 @@ use pocketmine\block\Block;
  * Called when a block spreads to another block, such as grass spreading to nearby dirt blocks.
  */
 class BlockSpreadEvent extends BaseBlockChangeEvent{
-	/** @var Block */
-	private $source;
 
-	public function __construct(Block $block, Block $source, Block $newState){
+	public function __construct(
+		Block $block,
+		private Block $source,
+		Block $newState
+	){
 		parent::__construct($block, $newState);
-		$this->source = $source;
 	}
 
 	public function getSource() : Block{
diff --git a/src/event/block/BlockTeleportEvent.php b/src/event/block/BlockTeleportEvent.php
index d20de90e1..38afae448 100644
--- a/src/event/block/BlockTeleportEvent.php
+++ b/src/event/block/BlockTeleportEvent.php
@@ -32,12 +32,11 @@ use pocketmine\utils\Utils;
 class BlockTeleportEvent extends BlockEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Vector3 */
-	private $to;
-
-	public function __construct(Block $block, Vector3 $to){
+	public function __construct(
+		Block $block,
+		private Vector3 $to
+	){
 		parent::__construct($block);
-		$this->to = $to;
 	}
 
 	public function getTo() : Vector3{
diff --git a/src/event/block/SignChangeEvent.php b/src/event/block/SignChangeEvent.php
index 4864eb752..9f87c585c 100644
--- a/src/event/block/SignChangeEvent.php
+++ b/src/event/block/SignChangeEvent.php
@@ -35,20 +35,12 @@ use pocketmine\player\Player;
 class SignChangeEvent extends BlockEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var BaseSign */
-	private $sign;
-
-	/** @var Player */
-	private $player;
-
-	/** @var SignText */
-	private $text;
-
-	public function __construct(BaseSign $sign, Player $player, SignText $text){
+	public function __construct(
+		private BaseSign $sign,
+		private Player $player,
+		private SignText $text
+	){
 		parent::__construct($sign);
-		$this->sign = $sign;
-		$this->player = $player;
-		$this->text = $text;
 	}
 
 	public function getSign() : BaseSign{
diff --git a/src/event/block/StructureGrowEvent.php b/src/event/block/StructureGrowEvent.php
index 6dc462d7c..f0adfba90 100644
--- a/src/event/block/StructureGrowEvent.php
+++ b/src/event/block/StructureGrowEvent.php
@@ -17,13 +17,12 @@ use pocketmine\world\BlockTransaction;
 class StructureGrowEvent extends BlockEvent implements Cancellable{
 	use CancellableTrait;
 
-	private BlockTransaction $transaction;
-	private ?Player $player;
-
-	public function __construct(Block $block, BlockTransaction $transaction, ?Player $player){
+	public function __construct(
+		Block $block,
+		private BlockTransaction $transaction,
+		private ?Player $player
+	){
 		parent::__construct($block);
-		$this->transaction = $transaction;
-		$this->player = $player;
 	}
 
 	public function getTransaction() : BlockTransaction{
diff --git a/src/event/entity/EntityBlockChangeEvent.php b/src/event/entity/EntityBlockChangeEvent.php
index f73da94ec..7f5d59e92 100644
--- a/src/event/entity/EntityBlockChangeEvent.php
+++ b/src/event/entity/EntityBlockChangeEvent.php
@@ -35,15 +35,12 @@ use pocketmine\event\CancellableTrait;
 class EntityBlockChangeEvent extends EntityEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Block */
-	private $from;
-	/** @var Block */
-	private $to;
-
-	public function __construct(Entity $entity, Block $from, Block $to){
+	public function __construct(
+		Entity $entity,
+		private Block $from,
+		private Block $to
+	){
 		$this->entity = $entity;
-		$this->from = $from;
-		$this->to = $to;
 	}
 
 	public function getBlock() : Block{
diff --git a/src/event/entity/EntityDamageByBlockEvent.php b/src/event/entity/EntityDamageByBlockEvent.php
index d6699ea13..92ec5f6e8 100644
--- a/src/event/entity/EntityDamageByBlockEvent.php
+++ b/src/event/entity/EntityDamageByBlockEvent.php
@@ -30,14 +30,11 @@ use pocketmine\entity\Entity;
  * Called when an entity takes damage from a block.
  */
 class EntityDamageByBlockEvent extends EntityDamageEvent{
-	/** @var Block */
-	private $damager;
 
 	/**
 	 * @param float[] $modifiers
 	 */
-	public function __construct(Block $damager, Entity $entity, int $cause, float $damage, array $modifiers = []){
-		$this->damager = $damager;
+	public function __construct(private Block $damager, Entity $entity, int $cause, float $damage, array $modifiers = []){
 		parent::__construct($entity, $cause, $damage, $modifiers);
 	}
 
diff --git a/src/event/entity/EntityDamageByChildEntityEvent.php b/src/event/entity/EntityDamageByChildEntityEvent.php
index e3e28ab0d..10c3b6204 100644
--- a/src/event/entity/EntityDamageByChildEntityEvent.php
+++ b/src/event/entity/EntityDamageByChildEntityEvent.php
@@ -29,8 +29,7 @@ use pocketmine\entity\Entity;
  * Called when an entity takes damage from an entity sourced from another entity, for example being hit by a snowball thrown by a Player.
  */
 class EntityDamageByChildEntityEvent extends EntityDamageByEntityEvent{
-	/** @var int */
-	private $childEntityEid;
+	private int $childEntityEid;
 
 	/**
 	 * @param float[] $modifiers
diff --git a/src/event/entity/EntityDamageByEntityEvent.php b/src/event/entity/EntityDamageByEntityEvent.php
index 90d487c70..84a0ed332 100644
--- a/src/event/entity/EntityDamageByEntityEvent.php
+++ b/src/event/entity/EntityDamageByEntityEvent.php
@@ -31,17 +31,13 @@ use pocketmine\entity\Living;
  * Called when an entity takes damage from another entity.
  */
 class EntityDamageByEntityEvent extends EntityDamageEvent{
-	/** @var int */
-	private $damagerEntityId;
-	/** @var float */
-	private $knockBack;
+	private int $damagerEntityId;
 
 	/**
 	 * @param float[] $modifiers
 	 */
-	public function __construct(Entity $damager, Entity $entity, int $cause, float $damage, array $modifiers = [], float $knockBack = 0.4){
+	public function __construct(Entity $damager, Entity $entity, int $cause, float $damage, array $modifiers = [], private float $knockBack = 0.4){
 		$this->damagerEntityId = $damager->getId();
-		$this->knockBack = $knockBack;
 		parent::__construct($entity, $cause, $damage, $modifiers);
 		$this->addAttackerModifiers($damager);
 	}
diff --git a/src/event/entity/EntityDamageEvent.php b/src/event/entity/EntityDamageEvent.php
index 79775e489..1f79d1ae1 100644
--- a/src/event/entity/EntityDamageEvent.php
+++ b/src/event/entity/EntityDamageEvent.php
@@ -64,31 +64,25 @@ class EntityDamageEvent extends EntityEvent implements Cancellable{
 	public const CAUSE_CUSTOM = 14;
 	public const CAUSE_STARVATION = 15;
 
-	/** @var int */
-	private $cause;
-	/** @var float */
-	private $baseDamage;
-	/** @var float */
-	private $originalBase;
+	private float $baseDamage;
+	private float $originalBase;
 
 	/** @var float[] */
-	private $modifiers;
-	/** @var float[] */
-	private $originals;
-
-	/** @var int */
-	private $attackCooldown = 10;
+	private array $originals;
+	private int $attackCooldown = 10;
 
 	/**
 	 * @param float[] $modifiers
 	 */
-	public function __construct(Entity $entity, int $cause, float $damage, array $modifiers = []){
+	public function __construct(
+		Entity $entity,
+		private int $cause,
+		float $damage,
+		private array $modifiers = []
+	){
 		$this->entity = $entity;
-		$this->cause = $cause;
 		$this->baseDamage = $this->originalBase = $damage;
-
-		$this->modifiers = $modifiers;
-		$this->originals = $this->modifiers;
+		$this->originals = $modifiers;
 	}
 
 	public function getCause() : int{
diff --git a/src/event/entity/EntityDeathEvent.php b/src/event/entity/EntityDeathEvent.php
index c9114d0b7..216100865 100644
--- a/src/event/entity/EntityDeathEvent.php
+++ b/src/event/entity/EntityDeathEvent.php
@@ -31,18 +31,16 @@ use pocketmine\utils\Utils;
  * @phpstan-extends EntityEvent<Living>
  */
 class EntityDeathEvent extends EntityEvent{
-	/** @var Item[] */
-	private $drops = [];
-	/** @var int */
-	private $xp;
 
 	/**
 	 * @param Item[] $drops
 	 */
-	public function __construct(Living $entity, array $drops = [], int $xp = 0){
+	public function __construct(
+		Living $entity,
+		private array $drops = [],
+		private int $xp = 0
+	){
 		$this->entity = $entity;
-		$this->drops = $drops;
-		$this->xp = $xp;
 	}
 
 	/**
diff --git a/src/event/entity/EntityEffectAddEvent.php b/src/event/entity/EntityEffectAddEvent.php
index 3061a399c..ff8e65984 100644
--- a/src/event/entity/EntityEffectAddEvent.php
+++ b/src/event/entity/EntityEffectAddEvent.php
@@ -30,12 +30,8 @@ use pocketmine\entity\Entity;
  * Called when an effect is added to an Entity.
  */
 class EntityEffectAddEvent extends EntityEffectEvent{
-	/** @var EffectInstance|null */
-	private $oldEffect;
-
-	public function __construct(Entity $entity, EffectInstance $effect, ?EffectInstance $oldEffect = null){
+	public function __construct(Entity $entity, EffectInstance $effect, private ?EffectInstance $oldEffect = null){
 		parent::__construct($entity, $effect);
-		$this->oldEffect = $oldEffect;
 	}
 
 	/**
diff --git a/src/event/entity/EntityEffectEvent.php b/src/event/entity/EntityEffectEvent.php
index f93e06b72..ac7293d84 100644
--- a/src/event/entity/EntityEffectEvent.php
+++ b/src/event/entity/EntityEffectEvent.php
@@ -34,12 +34,11 @@ use pocketmine\event\CancellableTrait;
 class EntityEffectEvent extends EntityEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var EffectInstance */
-	private $effect;
-
-	public function __construct(Entity $entity, EffectInstance $effect){
+	public function __construct(
+		Entity $entity,
+		private EffectInstance $effect
+	){
 		$this->entity = $entity;
-		$this->effect = $effect;
 	}
 
 	public function getEffect() : EffectInstance{
diff --git a/src/event/entity/EntityMotionEvent.php b/src/event/entity/EntityMotionEvent.php
index dc90e2b96..9fca7c34f 100644
--- a/src/event/entity/EntityMotionEvent.php
+++ b/src/event/entity/EntityMotionEvent.php
@@ -34,12 +34,11 @@ use pocketmine\math\Vector3;
 class EntityMotionEvent extends EntityEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Vector3 */
-	private $mot;
-
-	public function __construct(Entity $entity, Vector3 $mot){
+	public function __construct(
+		Entity $entity,
+		private Vector3 $mot
+	){
 		$this->entity = $entity;
-		$this->mot = $mot;
 	}
 
 	public function getVector() : Vector3{
diff --git a/src/event/entity/EntityRegainHealthEvent.php b/src/event/entity/EntityRegainHealthEvent.php
index cb37ee612..4d8d8b646 100644
--- a/src/event/entity/EntityRegainHealthEvent.php
+++ b/src/event/entity/EntityRegainHealthEvent.php
@@ -39,15 +39,12 @@ class EntityRegainHealthEvent extends EntityEvent implements Cancellable{
 	public const CAUSE_CUSTOM = 3;
 	public const CAUSE_SATURATION = 4;
 
-	/** @var float */
-	private $amount;
-	/** @var int */
-	private $reason;
-
-	public function __construct(Entity $entity, float $amount, int $regainReason){
+	public function __construct(
+		Entity $entity,
+		private float $amount,
+		private int $regainReason
+	){
 		$this->entity = $entity;
-		$this->amount = $amount;
-		$this->reason = $regainReason;
 	}
 
 	public function getAmount() : float{
@@ -62,6 +59,6 @@ class EntityRegainHealthEvent extends EntityEvent implements Cancellable{
 	 * Returns one of the CAUSE_* constants to indicate why this regeneration occurred.
 	 */
 	public function getRegainReason() : int{
-		return $this->reason;
+		return $this->regainReason;
 	}
 }
diff --git a/src/event/entity/EntityShootBowEvent.php b/src/event/entity/EntityShootBowEvent.php
index 5a871f282..cf01c56cd 100644
--- a/src/event/entity/EntityShootBowEvent.php
+++ b/src/event/entity/EntityShootBowEvent.php
@@ -37,18 +37,16 @@ use function count;
 class EntityShootBowEvent extends EntityEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Item */
-	private $bow;
-	/** @var Entity */
-	private $projectile;
-	/** @var float */
-	private $force;
+	private Entity $projectile;
 
-	public function __construct(Living $shooter, Item $bow, Projectile $projectile, float $force){
+	public function __construct(
+		Living $shooter,
+		private Item $bow,
+		Projectile $projectile,
+		private float $force
+	){
 		$this->entity = $shooter;
-		$this->bow = $bow;
 		$this->projectile = $projectile;
-		$this->force = $force;
 	}
 
 	/**
diff --git a/src/event/entity/EntityTeleportEvent.php b/src/event/entity/EntityTeleportEvent.php
index a513b4686..4a4f91699 100644
--- a/src/event/entity/EntityTeleportEvent.php
+++ b/src/event/entity/EntityTeleportEvent.php
@@ -35,15 +35,12 @@ use pocketmine\world\Position;
 class EntityTeleportEvent extends EntityEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Position */
-	private $from;
-	/** @var Position */
-	private $to;
-
-	public function __construct(Entity $entity, Position $from, Position $to){
+	public function __construct(
+		Entity $entity,
+		private Position $from,
+		private Position $to
+	){
 		$this->entity = $entity;
-		$this->from = $from;
-		$this->to = $to;
 	}
 
 	public function getFrom() : Position{
diff --git a/src/event/entity/EntityTrampleFarmlandEvent.php b/src/event/entity/EntityTrampleFarmlandEvent.php
index feea85bfe..254bfb065 100644
--- a/src/event/entity/EntityTrampleFarmlandEvent.php
+++ b/src/event/entity/EntityTrampleFarmlandEvent.php
@@ -34,12 +34,11 @@ use pocketmine\event\CancellableTrait;
 class EntityTrampleFarmlandEvent extends EntityEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Block */
-	private $block;
-
-	public function __construct(Living $entity, Block $block){
+	public function __construct(
+		Living $entity,
+		private Block $block
+	){
 		$this->entity = $entity;
-		$this->block = $block;
 	}
 
 	public function getBlock() : Block{
diff --git a/src/event/entity/ExplosionPrimeEvent.php b/src/event/entity/ExplosionPrimeEvent.php
index 68bec6fa4..4d9f21e54 100644
--- a/src/event/entity/ExplosionPrimeEvent.php
+++ b/src/event/entity/ExplosionPrimeEvent.php
@@ -36,13 +36,11 @@ class ExplosionPrimeEvent extends EntityEvent implements Cancellable{
 
 	/** @var float */
 	protected $force;
-	/** @var bool */
-	private $blockBreaking;
+	private bool $blockBreaking = true;
 
 	public function __construct(Entity $entity, float $force){
 		$this->entity = $entity;
 		$this->force = $force;
-		$this->blockBreaking = true;
 	}
 
 	public function getForce() : float{
diff --git a/src/event/entity/ProjectileHitBlockEvent.php b/src/event/entity/ProjectileHitBlockEvent.php
index d1929ed91..10d7e8278 100644
--- a/src/event/entity/ProjectileHitBlockEvent.php
+++ b/src/event/entity/ProjectileHitBlockEvent.php
@@ -28,12 +28,12 @@ use pocketmine\entity\projectile\Projectile;
 use pocketmine\math\RayTraceResult;
 
 class ProjectileHitBlockEvent extends ProjectileHitEvent{
-	/** @var Block */
-	private $blockHit;
-
-	public function __construct(Projectile $entity, RayTraceResult $rayTraceResult, Block $blockHit){
+	public function __construct(
+		Projectile $entity,
+		RayTraceResult $rayTraceResult,
+		private Block $blockHit
+	){
 		parent::__construct($entity, $rayTraceResult);
-		$this->blockHit = $blockHit;
 	}
 
 	/**
diff --git a/src/event/entity/ProjectileHitEntityEvent.php b/src/event/entity/ProjectileHitEntityEvent.php
index 3fe8b42b4..05e7c0fc5 100644
--- a/src/event/entity/ProjectileHitEntityEvent.php
+++ b/src/event/entity/ProjectileHitEntityEvent.php
@@ -28,12 +28,12 @@ use pocketmine\entity\projectile\Projectile;
 use pocketmine\math\RayTraceResult;
 
 class ProjectileHitEntityEvent extends ProjectileHitEvent{
-	/** @var Entity */
-	private $entityHit;
-
-	public function __construct(Projectile $entity, RayTraceResult $rayTraceResult, Entity $entityHit){
+	public function __construct(
+		Projectile $entity,
+		RayTraceResult $rayTraceResult,
+		private Entity $entityHit
+	){
 		parent::__construct($entity, $rayTraceResult);
-		$this->entityHit = $entityHit;
 	}
 
 	/**
diff --git a/src/event/entity/ProjectileHitEvent.php b/src/event/entity/ProjectileHitEvent.php
index 70230f3fa..d0a77e94b 100644
--- a/src/event/entity/ProjectileHitEvent.php
+++ b/src/event/entity/ProjectileHitEvent.php
@@ -31,12 +31,11 @@ use pocketmine\math\RayTraceResult;
  * @phpstan-extends EntityEvent<Projectile>
  */
 abstract class ProjectileHitEvent extends EntityEvent{
-	/** @var RayTraceResult */
-	private $rayTraceResult;
-
-	public function __construct(Projectile $entity, RayTraceResult $rayTraceResult){
+	public function __construct(
+		Projectile $entity,
+		private RayTraceResult $rayTraceResult
+	){
 		$this->entity = $entity;
-		$this->rayTraceResult = $rayTraceResult;
 	}
 
 	/**
diff --git a/src/event/inventory/CraftItemEvent.php b/src/event/inventory/CraftItemEvent.php
index 63773158a..eb475795e 100644
--- a/src/event/inventory/CraftItemEvent.php
+++ b/src/event/inventory/CraftItemEvent.php
@@ -34,28 +34,17 @@ use pocketmine\player\Player;
 class CraftItemEvent extends Event implements Cancellable{
 	use CancellableTrait;
 
-	/** @var CraftingTransaction */
-	private $transaction;
-	/** @var CraftingRecipe */
-	private $recipe;
-	/** @var int */
-	private $repetitions;
-	/** @var Item[] */
-	private $inputs;
-	/** @var Item[] */
-	private $outputs;
-
 	/**
 	 * @param Item[]              $inputs
 	 * @param Item[]              $outputs
 	 */
-	public function __construct(CraftingTransaction $transaction, CraftingRecipe $recipe, int $repetitions, array $inputs, array $outputs){
-		$this->transaction = $transaction;
-		$this->recipe = $recipe;
-		$this->repetitions = $repetitions;
-		$this->inputs = $inputs;
-		$this->outputs = $outputs;
-	}
+	public function __construct(
+		private CraftingTransaction $transaction,
+		private CraftingRecipe $recipe,
+		private int $repetitions,
+		private array $inputs,
+		private array $outputs
+	){}
 
 	/**
 	 * Returns the inventory transaction involved in this crafting event.
diff --git a/src/event/inventory/FurnaceBurnEvent.php b/src/event/inventory/FurnaceBurnEvent.php
index d613c5d9e..6bda9f305 100644
--- a/src/event/inventory/FurnaceBurnEvent.php
+++ b/src/event/inventory/FurnaceBurnEvent.php
@@ -35,20 +35,14 @@ use pocketmine\item\Item;
 class FurnaceBurnEvent extends BlockEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Furnace */
-	private $furnace;
-	/** @var Item */
-	private $fuel;
-	/** @var int */
-	private $burnTime;
-	/** @var bool */
-	private $burning = true;
+	private bool $burning = true;
 
-	public function __construct(Furnace $furnace, Item $fuel, int $burnTime){
+	public function __construct(
+		private Furnace $furnace,
+		private Item $fuel,
+		private int $burnTime
+	){
 		parent::__construct($furnace->getBlock());
-		$this->fuel = $fuel;
-		$this->burnTime = $burnTime;
-		$this->furnace = $furnace;
 	}
 
 	public function getFurnace() : Furnace{
diff --git a/src/event/inventory/FurnaceSmeltEvent.php b/src/event/inventory/FurnaceSmeltEvent.php
index cb2b5d828..6d81f0d25 100644
--- a/src/event/inventory/FurnaceSmeltEvent.php
+++ b/src/event/inventory/FurnaceSmeltEvent.php
@@ -32,19 +32,14 @@ use pocketmine\item\Item;
 class FurnaceSmeltEvent extends BlockEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Furnace */
-	private $furnace;
-	/** @var Item */
-	private $source;
-	/** @var Item */
-	private $result;
-
-	public function __construct(Furnace $furnace, Item $source, Item $result){
+	public function __construct(
+		private Furnace $furnace,
+		private Item $source,
+		private Item $result
+	){
 		parent::__construct($furnace->getBlock());
 		$this->source = clone $source;
 		$this->source->setCount(1);
-		$this->result = $result;
-		$this->furnace = $furnace;
 	}
 
 	public function getFurnace() : Furnace{
diff --git a/src/event/inventory/InventoryCloseEvent.php b/src/event/inventory/InventoryCloseEvent.php
index 1ea65234d..aa782e88d 100644
--- a/src/event/inventory/InventoryCloseEvent.php
+++ b/src/event/inventory/InventoryCloseEvent.php
@@ -27,11 +27,10 @@ use pocketmine\inventory\Inventory;
 use pocketmine\player\Player;
 
 class InventoryCloseEvent extends InventoryEvent{
-	/** @var Player */
-	private $who;
-
-	public function __construct(Inventory $inventory, Player $who){
-		$this->who = $who;
+	public function __construct(
+		Inventory $inventory,
+		private Player $who
+	){
 		parent::__construct($inventory);
 	}
 
diff --git a/src/event/inventory/InventoryOpenEvent.php b/src/event/inventory/InventoryOpenEvent.php
index ee5c13eb5..f68d369e9 100644
--- a/src/event/inventory/InventoryOpenEvent.php
+++ b/src/event/inventory/InventoryOpenEvent.php
@@ -31,11 +31,10 @@ use pocketmine\player\Player;
 class InventoryOpenEvent extends InventoryEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Player */
-	private $who;
-
-	public function __construct(Inventory $inventory, Player $who){
-		$this->who = $who;
+	public function __construct(
+		Inventory $inventory,
+		private Player $who
+	){
 		parent::__construct($inventory);
 	}
 
diff --git a/src/event/inventory/InventoryTransactionEvent.php b/src/event/inventory/InventoryTransactionEvent.php
index 7ec8c9023..c86c67b52 100644
--- a/src/event/inventory/InventoryTransactionEvent.php
+++ b/src/event/inventory/InventoryTransactionEvent.php
@@ -35,12 +35,7 @@ use pocketmine\inventory\transaction\InventoryTransaction;
 class InventoryTransactionEvent extends Event implements Cancellable{
 	use CancellableTrait;
 
-	/** @var InventoryTransaction */
-	private $transaction;
-
-	public function __construct(InventoryTransaction $transaction){
-		$this->transaction = $transaction;
-	}
+	public function __construct(private InventoryTransaction $transaction){}
 
 	public function getTransaction() : InventoryTransaction{
 		return $this->transaction;
diff --git a/src/event/player/PlayerBedEnterEvent.php b/src/event/player/PlayerBedEnterEvent.php
index a9e571c6f..7adaf6a60 100644
--- a/src/event/player/PlayerBedEnterEvent.php
+++ b/src/event/player/PlayerBedEnterEvent.php
@@ -31,12 +31,11 @@ use pocketmine\player\Player;
 class PlayerBedEnterEvent extends PlayerEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Block */
-	private $bed;
-
-	public function __construct(Player $player, Block $bed){
+	public function __construct(
+		Player $player,
+		private Block $bed
+	){
 		$this->player = $player;
-		$this->bed = $bed;
 	}
 
 	public function getBed() : Block{
diff --git a/src/event/player/PlayerBedLeaveEvent.php b/src/event/player/PlayerBedLeaveEvent.php
index 7efe02673..80f0f2af9 100644
--- a/src/event/player/PlayerBedLeaveEvent.php
+++ b/src/event/player/PlayerBedLeaveEvent.php
@@ -27,12 +27,11 @@ use pocketmine\block\Block;
 use pocketmine\player\Player;
 
 class PlayerBedLeaveEvent extends PlayerEvent{
-	/** @var Block */
-	private $bed;
-
-	public function __construct(Player $player, Block $bed){
+	public function __construct(
+		Player $player,
+		private Block $bed
+	){
 		$this->player = $player;
-		$this->bed = $bed;
 	}
 
 	public function getBed() : Block{
diff --git a/src/event/player/PlayerBlockPickEvent.php b/src/event/player/PlayerBlockPickEvent.php
index c365cda16..88dccd5dd 100644
--- a/src/event/player/PlayerBlockPickEvent.php
+++ b/src/event/player/PlayerBlockPickEvent.php
@@ -35,15 +35,12 @@ use pocketmine\player\Player;
 class PlayerBlockPickEvent extends PlayerEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Block */
-	private $blockClicked;
-	/** @var Item */
-	private $resultItem;
-
-	public function __construct(Player $player, Block $blockClicked, Item $resultItem){
+	public function __construct(
+		Player $player,
+		private Block $blockClicked,
+		private Item $resultItem
+	){
 		$this->player = $player;
-		$this->blockClicked = $blockClicked;
-		$this->resultItem = $resultItem;
 	}
 
 	public function getBlock() : Block{
diff --git a/src/event/player/PlayerBucketEvent.php b/src/event/player/PlayerBucketEvent.php
index 3cea82242..5b580f9b4 100644
--- a/src/event/player/PlayerBucketEvent.php
+++ b/src/event/player/PlayerBucketEvent.php
@@ -35,21 +35,14 @@ use pocketmine\player\Player;
 abstract class PlayerBucketEvent extends PlayerEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Block */
-	private $blockClicked;
-	/** @var int */
-	private $blockFace;
-	/** @var Item */
-	private $bucket;
-	/** @var Item */
-	private $item;
-
-	public function __construct(Player $who, Block $blockClicked, int $blockFace, Item $bucket, Item $itemInHand){
+	public function __construct(
+		Player $who,
+		private Block $blockClicked,
+		private int $blockFace,
+		private Item $bucket,
+		private Item $itemInHand
+	){
 		$this->player = $who;
-		$this->blockClicked = $blockClicked;
-		$this->blockFace = $blockFace;
-		$this->item = $itemInHand;
-		$this->bucket = $bucket;
 	}
 
 	/**
@@ -63,11 +56,11 @@ abstract class PlayerBucketEvent extends PlayerEvent implements Cancellable{
 	 * Returns the item in hand after the event
 	 */
 	public function getItem() : Item{
-		return $this->item;
+		return $this->itemInHand;
 	}
 
 	public function setItem(Item $item) : void{
-		$this->item = $item;
+		$this->itemInHand = $item;
 	}
 
 	public function getBlockClicked() : Block{
diff --git a/src/event/player/PlayerChangeSkinEvent.php b/src/event/player/PlayerChangeSkinEvent.php
index 51fde74a3..2eed08522 100644
--- a/src/event/player/PlayerChangeSkinEvent.php
+++ b/src/event/player/PlayerChangeSkinEvent.php
@@ -34,15 +34,12 @@ use pocketmine\player\Player;
 class PlayerChangeSkinEvent extends PlayerEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Skin */
-	private $oldSkin;
-	/** @var Skin */
-	private $newSkin;
-
-	public function __construct(Player $player, Skin $oldSkin, Skin $newSkin){
+	public function __construct(
+		Player $player,
+		private Skin $oldSkin,
+		private Skin $newSkin
+	){
 		$this->player = $player;
-		$this->oldSkin = $oldSkin;
-		$this->newSkin = $newSkin;
 	}
 
 	public function getOldSkin() : Skin{
diff --git a/src/event/player/PlayerCreationEvent.php b/src/event/player/PlayerCreationEvent.php
index 013fcdb2a..d58bfd4c9 100644
--- a/src/event/player/PlayerCreationEvent.php
+++ b/src/event/player/PlayerCreationEvent.php
@@ -34,23 +34,12 @@ use function is_a;
  */
 class PlayerCreationEvent extends Event{
 
-	/** @var NetworkSession */
-	private $session;
+	/** @phpstan-var class-string<Player> */
+	private string $baseClass = Player::class;
+	/** @phpstan-var class-string<Player> */
+	private string $playerClass = Player::class;
 
-	/**
-	 * @var string
-	 * @phpstan-var class-string<Player>
-	 */
-	private $baseClass = Player::class;
-	/**
-	 * @var string
-	 * @phpstan-var class-string<Player>
-	 */
-	private $playerClass = Player::class;
-
-	public function __construct(NetworkSession $session){
-		$this->session = $session;
-	}
+	public function __construct(private NetworkSession $session){}
 
 	public function getNetworkSession() : NetworkSession{
 		return $this->session;
diff --git a/src/event/player/PlayerDataSaveEvent.php b/src/event/player/PlayerDataSaveEvent.php
index 70e744304..a848f5256 100644
--- a/src/event/player/PlayerDataSaveEvent.php
+++ b/src/event/player/PlayerDataSaveEvent.php
@@ -39,13 +39,14 @@ class PlayerDataSaveEvent extends Event implements Cancellable{
 	protected $data;
 	/** @var string */
 	protected $playerName;
-	/** @var Player|null */
-	private $player;
 
-	public function __construct(CompoundTag $nbt, string $playerName, ?Player $player){
+	public function __construct(
+		CompoundTag $nbt,
+		string $playerName,
+		private ?Player $player
+	){
 		$this->data = $nbt;
 		$this->playerName = $playerName;
-		$this->player = $player;
 	}
 
 	/**
diff --git a/src/event/player/PlayerDeathEvent.php b/src/event/player/PlayerDeathEvent.php
index 6c44d3819..8eb6e6e6a 100644
--- a/src/event/player/PlayerDeathEvent.php
+++ b/src/event/player/PlayerDeathEvent.php
@@ -38,10 +38,8 @@ class PlayerDeathEvent extends EntityDeathEvent{
 	/** @var Player */
 	protected $player;
 
-	/** @var Translatable|string */
-	private $deathMessage;
-	/** @var bool */
-	private $keepInventory = false;
+	private Translatable|string $deathMessage;
+	private bool $keepInventory = false;
 
 	/**
 	 * @param Item[]                   $drops
diff --git a/src/event/player/PlayerDisplayNameChangeEvent.php b/src/event/player/PlayerDisplayNameChangeEvent.php
index 8956ca2c4..5bcb90199 100644
--- a/src/event/player/PlayerDisplayNameChangeEvent.php
+++ b/src/event/player/PlayerDisplayNameChangeEvent.php
@@ -27,15 +27,12 @@ use pocketmine\player\Player;
 
 class PlayerDisplayNameChangeEvent extends PlayerEvent{
 
-	/** @var string */
-	private $oldName;
-	/** @var string */
-	private $newName;
-
-	public function __construct(Player $player, string $oldName, string $newName){
+	public function __construct(
+		Player $player,
+		private string $oldName,
+		private string $newName
+	){
 		$this->player = $player;
-		$this->oldName = $oldName;
-		$this->newName = $newName;
 	}
 
 	public function getOldName() : string{
diff --git a/src/event/player/PlayerDropItemEvent.php b/src/event/player/PlayerDropItemEvent.php
index a97a6f5fa..efff2cdde 100644
--- a/src/event/player/PlayerDropItemEvent.php
+++ b/src/event/player/PlayerDropItemEvent.php
@@ -34,12 +34,11 @@ use pocketmine\player\Player;
 class PlayerDropItemEvent extends PlayerEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Item */
-	private $drop;
-
-	public function __construct(Player $player, Item $drop){
+	public function __construct(
+		Player $player,
+		private Item $drop
+	){
 		$this->player = $player;
-		$this->drop = $drop;
 	}
 
 	public function getItem() : Item{
diff --git a/src/event/player/PlayerDuplicateLoginEvent.php b/src/event/player/PlayerDuplicateLoginEvent.php
index 92fc34547..f1bd30d25 100644
--- a/src/event/player/PlayerDuplicateLoginEvent.php
+++ b/src/event/player/PlayerDuplicateLoginEvent.php
@@ -35,17 +35,12 @@ use pocketmine\network\mcpe\NetworkSession;
 class PlayerDuplicateLoginEvent extends Event implements Cancellable{
 	use CancellableTrait;
 
-	/** @var NetworkSession */
-	private $connectingSession;
-	/** @var NetworkSession */
-	private $existingSession;
-	/** @var string */
-	private $disconnectMessage = "Logged in from another location";
+	private string $disconnectMessage = "Logged in from another location";
 
-	public function __construct(NetworkSession $connectingSession, NetworkSession $existingSession){
-		$this->connectingSession = $connectingSession;
-		$this->existingSession = $existingSession;
-	}
+	public function __construct(
+		private NetworkSession $connectingSession,
+		private NetworkSession $existingSession
+	){}
 
 	public function getConnectingSession() : NetworkSession{
 		return $this->connectingSession;
diff --git a/src/event/player/PlayerEditBookEvent.php b/src/event/player/PlayerEditBookEvent.php
index 9a60de137..ca73fc1f5 100644
--- a/src/event/player/PlayerEditBookEvent.php
+++ b/src/event/player/PlayerEditBookEvent.php
@@ -37,24 +37,17 @@ class PlayerEditBookEvent extends PlayerEvent implements Cancellable{
 	public const ACTION_SWAP_PAGES = 3;
 	public const ACTION_SIGN_BOOK = 4;
 
-	/** @var WritableBookBase */
-	private $oldBook;
-	/** @var int */
-	private $action;
-	/** @var WritableBookBase */
-	private $newBook;
-	/** @var int[] */
-	private $modifiedPages;
-
 	/**
 	 * @param int[] $modifiedPages
 	 */
-	public function __construct(Player $player, WritableBookBase $oldBook, WritableBookBase $newBook, int $action, array $modifiedPages){
+	public function __construct(
+		Player $player,
+		private WritableBookBase $oldBook,
+		private WritableBookBase $newBook,
+		private int $action,
+		private array $modifiedPages
+	){
 		$this->player = $player;
-		$this->oldBook = $oldBook;
-		$this->newBook = $newBook;
-		$this->action = $action;
-		$this->modifiedPages = $modifiedPages;
 	}
 
 	/**
diff --git a/src/event/player/PlayerExhaustEvent.php b/src/event/player/PlayerExhaustEvent.php
index 42408a7b2..95e331232 100644
--- a/src/event/player/PlayerExhaustEvent.php
+++ b/src/event/player/PlayerExhaustEvent.php
@@ -46,19 +46,16 @@ class PlayerExhaustEvent extends EntityEvent implements Cancellable{
 	public const CAUSE_SPRINT_JUMPING = 10;
 	public const CAUSE_CUSTOM = 11;
 
-	/** @var float */
-	private $amount;
-	/** @var int */
-	private $cause;
-
 	/** @var Human */
 	protected $player;
 
-	public function __construct(Human $human, float $amount, int $cause){
+	public function __construct(
+		Human $human,
+		private float $amount,
+		private int $cause
+	){
 		$this->entity = $human;
 		$this->player = $human;
-		$this->amount = $amount;
-		$this->cause = $cause;
 	}
 
 	/**
diff --git a/src/event/player/PlayerExperienceChangeEvent.php b/src/event/player/PlayerExperienceChangeEvent.php
index 0ca195bdc..b62f82899 100644
--- a/src/event/player/PlayerExperienceChangeEvent.php
+++ b/src/event/player/PlayerExperienceChangeEvent.php
@@ -37,22 +37,15 @@ class PlayerExperienceChangeEvent extends EntityEvent implements Cancellable{
 
 	/** @var Human */
 	protected $entity;
-	/** @var int */
-	private $oldLevel;
-	/** @var float */
-	private $oldProgress;
-	/** @var int|null */
-	private $newLevel;
-	/** @var float|null */
-	private $newProgress;
 
-	public function __construct(Human $player, int $oldLevel, float $oldProgress, ?int $newLevel, ?float $newProgress){
+	public function __construct(
+		Human $player,
+		private int $oldLevel,
+		private float $oldProgress,
+		private ?int $newLevel,
+		private ?float $newProgress
+	){
 		$this->entity = $player;
-
-		$this->oldLevel = $oldLevel;
-		$this->oldProgress = $oldProgress;
-		$this->newLevel = $newLevel;
-		$this->newProgress = $newProgress;
 	}
 
 	public function getOldLevel() : int{
diff --git a/src/event/player/PlayerItemConsumeEvent.php b/src/event/player/PlayerItemConsumeEvent.php
index 52bb5e243..2b63277d4 100644
--- a/src/event/player/PlayerItemConsumeEvent.php
+++ b/src/event/player/PlayerItemConsumeEvent.php
@@ -34,12 +34,11 @@ use pocketmine\player\Player;
 class PlayerItemConsumeEvent extends PlayerEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Item */
-	private $item;
-
-	public function __construct(Player $player, Item $item){
+	public function __construct(
+		Player $player,
+		private Item $item
+	){
 		$this->player = $player;
-		$this->item = $item;
 	}
 
 	public function getItem() : Item{
diff --git a/src/event/player/PlayerItemHeldEvent.php b/src/event/player/PlayerItemHeldEvent.php
index 71f55fc53..76145b0ac 100644
--- a/src/event/player/PlayerItemHeldEvent.php
+++ b/src/event/player/PlayerItemHeldEvent.php
@@ -31,15 +31,12 @@ use pocketmine\player\Player;
 class PlayerItemHeldEvent extends PlayerEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Item */
-	private $item;
-	/** @var int */
-	private $hotbarSlot;
-
-	public function __construct(Player $player, Item $item, int $hotbarSlot){
+	public function __construct(
+		Player $player,
+		private Item $item,
+		private int $hotbarSlot
+	){
 		$this->player = $player;
-		$this->item = $item;
-		$this->hotbarSlot = $hotbarSlot;
 	}
 
 	/**
diff --git a/src/event/player/PlayerItemUseEvent.php b/src/event/player/PlayerItemUseEvent.php
index b9216d528..594536f59 100644
--- a/src/event/player/PlayerItemUseEvent.php
+++ b/src/event/player/PlayerItemUseEvent.php
@@ -35,15 +35,12 @@ use pocketmine\player\Player;
 class PlayerItemUseEvent extends PlayerEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Item */
-	private $item;
-	/** @var Vector3 */
-	private $directionVector;
-
-	public function __construct(Player $player, Item $item, Vector3 $directionVector){
+	public function __construct(
+		Player $player,
+		private Item $item,
+		private Vector3 $directionVector
+	){
 		$this->player = $player;
-		$this->item = $item;
-		$this->directionVector = $directionVector;
 	}
 
 	/**
diff --git a/src/event/player/PlayerMoveEvent.php b/src/event/player/PlayerMoveEvent.php
index 62b8a2843..6d405b5bc 100644
--- a/src/event/player/PlayerMoveEvent.php
+++ b/src/event/player/PlayerMoveEvent.php
@@ -32,15 +32,12 @@ use pocketmine\utils\Utils;
 class PlayerMoveEvent extends PlayerEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var Location */
-	private $from;
-	/** @var Location */
-	private $to;
-
-	public function __construct(Player $player, Location $from, Location $to){
+	public function __construct(
+		Player $player,
+		private Location $from,
+		private Location $to
+	){
 		$this->player = $player;
-		$this->from = $from;
-		$this->to = $to;
 	}
 
 	public function getFrom() : Location{
diff --git a/src/event/player/PlayerPreLoginEvent.php b/src/event/player/PlayerPreLoginEvent.php
index 78be4746e..b4a286779 100644
--- a/src/event/player/PlayerPreLoginEvent.php
+++ b/src/event/player/PlayerPreLoginEvent.php
@@ -52,22 +52,18 @@ class PlayerPreLoginEvent extends Event implements Cancellable{
 		self::KICK_REASON_BANNED
 	];
 
-	/** @var PlayerInfo */
-	private $playerInfo;
-	/** @var string */
-	private $ip;
-	/** @var int */
-	private $port;
 	/** @var bool */
 	protected $authRequired;
 
 	/** @var string[] reason const => associated message */
 	protected $kickReasons = [];
 
-	public function __construct(PlayerInfo $playerInfo, string $ip, int $port, bool $authRequired){
-		$this->playerInfo = $playerInfo;
-		$this->ip = $ip;
-		$this->port = $port;
+	public function __construct(
+		private PlayerInfo $playerInfo,
+		private string $ip,
+		private int $port,
+		bool $authRequired
+	){
 		$this->authRequired = $authRequired;
 	}
 
diff --git a/src/event/plugin/PluginEvent.php b/src/event/plugin/PluginEvent.php
index 82faa0638..f41417575 100644
--- a/src/event/plugin/PluginEvent.php
+++ b/src/event/plugin/PluginEvent.php
@@ -30,12 +30,7 @@ use pocketmine\event\Event;
 use pocketmine\plugin\Plugin;
 
 abstract class PluginEvent extends Event{
-	/** @var Plugin */
-	private $plugin;
-
-	public function __construct(Plugin $plugin){
-		$this->plugin = $plugin;
-	}
+	public function __construct(private Plugin $plugin){}
 
 	public function getPlugin() : Plugin{
 		return $this->plugin;
diff --git a/src/event/server/DataPacketReceiveEvent.php b/src/event/server/DataPacketReceiveEvent.php
index c3443d206..cfa118b33 100644
--- a/src/event/server/DataPacketReceiveEvent.php
+++ b/src/event/server/DataPacketReceiveEvent.php
@@ -31,15 +31,10 @@ use pocketmine\network\mcpe\protocol\ServerboundPacket;
 class DataPacketReceiveEvent extends ServerEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var ServerboundPacket */
-	private $packet;
-	/** @var NetworkSession */
-	private $origin;
-
-	public function __construct(NetworkSession $origin, ServerboundPacket $packet){
-		$this->packet = $packet;
-		$this->origin = $origin;
-	}
+	public function __construct(
+		private NetworkSession $origin,
+		private ServerboundPacket $packet
+	){}
 
 	public function getPacket() : ServerboundPacket{
 		return $this->packet;
diff --git a/src/event/server/DataPacketSendEvent.php b/src/event/server/DataPacketSendEvent.php
index dac9ac819..b7492faf5 100644
--- a/src/event/server/DataPacketSendEvent.php
+++ b/src/event/server/DataPacketSendEvent.php
@@ -34,19 +34,14 @@ use pocketmine\network\mcpe\protocol\ClientboundPacket;
 class DataPacketSendEvent extends ServerEvent implements Cancellable{
 	use CancellableTrait;
 
-	/** @var NetworkSession[] */
-	private $targets;
-	/** @var ClientboundPacket[] */
-	private $packets;
-
 	/**
 	 * @param NetworkSession[]    $targets
 	 * @param ClientboundPacket[] $packets
 	 */
-	public function __construct(array $targets, array $packets){
-		$this->targets = $targets;
-		$this->packets = $packets;
-	}
+	public function __construct(
+		private array $targets,
+		private array $packets
+	){}
 
 	/**
 	 * @return NetworkSession[]
diff --git a/src/event/server/LowMemoryEvent.php b/src/event/server/LowMemoryEvent.php
index 7c7a090a6..c333dc0a5 100644
--- a/src/event/server/LowMemoryEvent.php
+++ b/src/event/server/LowMemoryEvent.php
@@ -30,21 +30,12 @@ use pocketmine\utils\Process;
  * Plugins should free caches or other non-essential data.
  */
 class LowMemoryEvent extends ServerEvent{
-	/** @var int */
-	private $memory;
-	/** @var int */
-	private $memoryLimit;
-	/** @var int */
-	private $triggerCount;
-	/** @var bool */
-	private $global;
-
-	public function __construct(int $memory, int $memoryLimit, bool $isGlobal = false, int $triggerCount = 0){
-		$this->memory = $memory;
-		$this->memoryLimit = $memoryLimit;
-		$this->global = $isGlobal;
-		$this->triggerCount = $triggerCount;
-	}
+	public function __construct(
+		private int $memory,
+		private int $memoryLimit,
+		private bool $isGlobal = false,
+		private int $triggerCount = 0
+	){}
 
 	/**
 	 * Returns the memory usage at the time of the event call (in bytes)
@@ -68,7 +59,7 @@ class LowMemoryEvent extends ServerEvent{
 	}
 
 	public function isGlobal() : bool{
-		return $this->global;
+		return $this->isGlobal;
 	}
 
 	/**
diff --git a/src/event/server/QueryRegenerateEvent.php b/src/event/server/QueryRegenerateEvent.php
index 5bf879f94..8a3f41f7e 100644
--- a/src/event/server/QueryRegenerateEvent.php
+++ b/src/event/server/QueryRegenerateEvent.php
@@ -26,12 +26,7 @@ namespace pocketmine\event\server;
 use pocketmine\network\query\QueryInfo;
 
 class QueryRegenerateEvent extends ServerEvent{
-	/** @var QueryInfo */
-	private $queryInfo;
-
-	public function __construct(QueryInfo $queryInfo){
-		$this->queryInfo = $queryInfo;
-	}
+	public function __construct(private QueryInfo $queryInfo){}
 
 	public function getQueryInfo() : QueryInfo{
 		return $this->queryInfo;
diff --git a/src/event/server/UpdateNotifyEvent.php b/src/event/server/UpdateNotifyEvent.php
index 843b2c60e..a4b40473e 100644
--- a/src/event/server/UpdateNotifyEvent.php
+++ b/src/event/server/UpdateNotifyEvent.php
@@ -30,12 +30,7 @@ use pocketmine\updater\UpdateChecker;
  * Plugins may use this event to perform actions when an update notification is received.
  */
 class UpdateNotifyEvent extends ServerEvent{
-	/** @var UpdateChecker */
-	private $updater;
-
-	public function __construct(UpdateChecker $updater){
-		$this->updater = $updater;
-	}
+	public function __construct(private UpdateChecker $updater){}
 
 	public function getUpdater() : UpdateChecker{
 		return $this->updater;
diff --git a/src/event/world/ChunkEvent.php b/src/event/world/ChunkEvent.php
index ebdc2be91..084a6ca9f 100644
--- a/src/event/world/ChunkEvent.php
+++ b/src/event/world/ChunkEvent.php
@@ -30,18 +30,13 @@ use pocketmine\world\World;
  * Chunk-related events
  */
 abstract class ChunkEvent extends WorldEvent{
-	/** @var Chunk */
-	private $chunk;
-	/** @var int */
-	private $chunkX;
-	/** @var int */
-	private $chunkZ;
-
-	public function __construct(World $world, int $chunkX, int $chunkZ, Chunk $chunk){
+	public function __construct(
+		World $world,
+		private int $chunkX,
+		private int $chunkZ,
+		private Chunk $chunk
+	){
 		parent::__construct($world);
-		$this->chunk = $chunk;
-		$this->chunkX = $chunkX;
-		$this->chunkZ = $chunkZ;
 	}
 
 	public function getChunk() : Chunk{
diff --git a/src/event/world/ChunkLoadEvent.php b/src/event/world/ChunkLoadEvent.php
index f8f1ef776..3281b3641 100644
--- a/src/event/world/ChunkLoadEvent.php
+++ b/src/event/world/ChunkLoadEvent.php
@@ -30,12 +30,14 @@ use pocketmine\world\World;
  * Called when a Chunk is loaded
  */
 class ChunkLoadEvent extends ChunkEvent{
-	/** @var bool */
-	private $newChunk;
-
-	public function __construct(World $world, int $chunkX, int $chunkZ, Chunk $chunk, bool $newChunk){
+	public function __construct(
+		World $world,
+		int $chunkX,
+		int $chunkZ,
+		Chunk $chunk,
+		private bool $newChunk
+	){
 		parent::__construct($world, $chunkX, $chunkZ, $chunk);
-		$this->newChunk = $newChunk;
 	}
 
 	public function isNewChunk() : bool{
diff --git a/src/event/world/SpawnChangeEvent.php b/src/event/world/SpawnChangeEvent.php
index dba959a64..8b84ea04f 100644
--- a/src/event/world/SpawnChangeEvent.php
+++ b/src/event/world/SpawnChangeEvent.php
@@ -31,12 +31,11 @@ use pocketmine\world\World;
  * The previous spawn is included
  */
 class SpawnChangeEvent extends WorldEvent{
-	/** @var Position */
-	private $previousSpawn;
-
-	public function __construct(World $world, Position $previousSpawn){
+	public function __construct(
+		World $world,
+		private Position $previousSpawn
+	){
 		parent::__construct($world);
-		$this->previousSpawn = $previousSpawn;
 	}
 
 	public function getPreviousSpawn() : Position{
diff --git a/src/event/world/WorldEvent.php b/src/event/world/WorldEvent.php
index c842825ae..af8f4c6c9 100644
--- a/src/event/world/WorldEvent.php
+++ b/src/event/world/WorldEvent.php
@@ -30,12 +30,7 @@ use pocketmine\event\Event;
 use pocketmine\world\World;
 
 abstract class WorldEvent extends Event{
-	/** @var World */
-	private $world;
-
-	public function __construct(World $world){
-		$this->world = $world;
-	}
+	public function __construct(private World $world){}
 
 	public function getWorld() : World{
 		return $this->world;