diff --git a/src/pocketmine/level/particle/CriticalParticle.php b/src/pocketmine/level/particle/CriticalParticle.php
index 895b500ab..9ecfff529 100644
--- a/src/pocketmine/level/particle/CriticalParticle.php
+++ b/src/pocketmine/level/particle/CriticalParticle.php
@@ -26,7 +26,7 @@ namespace pocketmine\level\particle;
 use pocketmine\math\Vector3;
 
 class CriticalParticle extends GenericParticle{
-	public function __construct(Vector3 $pos, $scale = 2){
+	public function __construct(Vector3 $pos, int $scale = 2){
 		parent::__construct($pos, Particle::TYPE_CRITICAL, $scale);
 	}
 }
diff --git a/src/pocketmine/level/particle/DustParticle.php b/src/pocketmine/level/particle/DustParticle.php
index 5144f02c2..e1cb56742 100644
--- a/src/pocketmine/level/particle/DustParticle.php
+++ b/src/pocketmine/level/particle/DustParticle.php
@@ -26,7 +26,7 @@ namespace pocketmine\level\particle;
 use pocketmine\math\Vector3;
 
 class DustParticle extends GenericParticle{
-	public function __construct(Vector3 $pos, $r, $g, $b, $a = 255){
+	public function __construct(Vector3 $pos, int $r, int $g, int $b, int $a = 255){
 		parent::__construct($pos, Particle::TYPE_DUST, (($a & 0xff) << 24) | (($r & 0xff) << 16) | (($g & 0xff) << 8) | ($b & 0xff));
 	}
 }
diff --git a/src/pocketmine/level/particle/FloatingTextParticle.php b/src/pocketmine/level/particle/FloatingTextParticle.php
index 725f56b7b..f9e460388 100644
--- a/src/pocketmine/level/particle/FloatingTextParticle.php
+++ b/src/pocketmine/level/particle/FloatingTextParticle.php
@@ -72,7 +72,7 @@ class FloatingTextParticle extends Particle{
 		return $this->invisible;
 	}
 
-	public function setInvisible(bool $value = true){
+	public function setInvisible(bool $value = true) : void{
 		$this->invisible = $value;
 	}
 
diff --git a/src/pocketmine/level/particle/GenericParticle.php b/src/pocketmine/level/particle/GenericParticle.php
index 156a2a501..b14afa149 100644
--- a/src/pocketmine/level/particle/GenericParticle.php
+++ b/src/pocketmine/level/particle/GenericParticle.php
@@ -27,11 +27,12 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class GenericParticle extends Particle{
-
+	/** @var int */
 	protected $id;
+	/** @var int */
 	protected $data;
 
-	public function __construct(Vector3 $pos, $id, $data = 0){
+	public function __construct(Vector3 $pos, int $id, int $data = 0){
 		parent::__construct($pos->x, $pos->y, $pos->z);
 		$this->id = $id & 0xFFF;
 		$this->data = $data;
diff --git a/src/pocketmine/level/particle/HeartParticle.php b/src/pocketmine/level/particle/HeartParticle.php
index f7dfb80a3..c25271b1d 100644
--- a/src/pocketmine/level/particle/HeartParticle.php
+++ b/src/pocketmine/level/particle/HeartParticle.php
@@ -26,7 +26,7 @@ namespace pocketmine\level\particle;
 use pocketmine\math\Vector3;
 
 class HeartParticle extends GenericParticle{
-	public function __construct(Vector3 $pos, $scale = 0){
+	public function __construct(Vector3 $pos, int $scale = 0){
 		parent::__construct($pos, Particle::TYPE_HEART, $scale);
 	}
 }
diff --git a/src/pocketmine/level/particle/InkParticle.php b/src/pocketmine/level/particle/InkParticle.php
index c794af312..80fed048f 100644
--- a/src/pocketmine/level/particle/InkParticle.php
+++ b/src/pocketmine/level/particle/InkParticle.php
@@ -26,7 +26,7 @@ namespace pocketmine\level\particle;
 use pocketmine\math\Vector3;
 
 class InkParticle extends GenericParticle{
-	public function __construct(Vector3 $pos, $scale = 0){
+	public function __construct(Vector3 $pos, int $scale = 0){
 		parent::__construct($pos, Particle::TYPE_INK, $scale);
 	}
 }
diff --git a/src/pocketmine/level/particle/MobSpawnParticle.php b/src/pocketmine/level/particle/MobSpawnParticle.php
index 62498c067..754e59710 100644
--- a/src/pocketmine/level/particle/MobSpawnParticle.php
+++ b/src/pocketmine/level/particle/MobSpawnParticle.php
@@ -27,11 +27,12 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class MobSpawnParticle extends Particle{
-
+	/** @var int */
 	protected $width;
+	/** @var int */
 	protected $height;
 
-	public function __construct(Vector3 $pos, $width = 0, $height = 0){
+	public function __construct(Vector3 $pos, int $width = 0, int $height = 0){
 		parent::__construct($pos->x, $pos->y, $pos->z);
 		$this->width = $width;
 		$this->height = $height;
diff --git a/src/pocketmine/level/particle/RedstoneParticle.php b/src/pocketmine/level/particle/RedstoneParticle.php
index 8db6157d8..7fa524115 100644
--- a/src/pocketmine/level/particle/RedstoneParticle.php
+++ b/src/pocketmine/level/particle/RedstoneParticle.php
@@ -26,7 +26,7 @@ namespace pocketmine\level\particle;
 use pocketmine\math\Vector3;
 
 class RedstoneParticle extends GenericParticle{
-	public function __construct(Vector3 $pos, $lifetime = 1){
+	public function __construct(Vector3 $pos, int $lifetime = 1){
 		parent::__construct($pos, Particle::TYPE_REDSTONE, $lifetime);
 	}
 }
diff --git a/src/pocketmine/level/particle/SmokeParticle.php b/src/pocketmine/level/particle/SmokeParticle.php
index 99ae52187..3653551f9 100644
--- a/src/pocketmine/level/particle/SmokeParticle.php
+++ b/src/pocketmine/level/particle/SmokeParticle.php
@@ -26,7 +26,7 @@ namespace pocketmine\level\particle;
 use pocketmine\math\Vector3;
 
 class SmokeParticle extends GenericParticle{
-	public function __construct(Vector3 $pos, $scale = 0){
-		parent::__construct($pos, Particle::TYPE_SMOKE, (int) $scale);
+	public function __construct(Vector3 $pos, int $scale = 0){
+		parent::__construct($pos, Particle::TYPE_SMOKE, $scale);
 	}
 }
diff --git a/src/pocketmine/level/sound/AnvilBreakSound.php b/src/pocketmine/level/sound/AnvilBreakSound.php
index 877a4f4a3..c144d8833 100644
--- a/src/pocketmine/level/sound/AnvilBreakSound.php
+++ b/src/pocketmine/level/sound/AnvilBreakSound.php
@@ -27,7 +27,7 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class AnvilBreakSound extends GenericSound{
-	public function __construct(Vector3 $pos, $pitch = 0){
+	public function __construct(Vector3 $pos, float $pitch = 0){
 		parent::__construct($pos, LevelEventPacket::EVENT_SOUND_ANVIL_BREAK, $pitch);
 	}
 }
diff --git a/src/pocketmine/level/sound/AnvilFallSound.php b/src/pocketmine/level/sound/AnvilFallSound.php
index 641722443..a1bb8ce17 100644
--- a/src/pocketmine/level/sound/AnvilFallSound.php
+++ b/src/pocketmine/level/sound/AnvilFallSound.php
@@ -27,7 +27,7 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class AnvilFallSound extends GenericSound{
-	public function __construct(Vector3 $pos, $pitch = 0){
+	public function __construct(Vector3 $pos, float $pitch = 0){
 		parent::__construct($pos, LevelEventPacket::EVENT_SOUND_ANVIL_FALL, $pitch);
 	}
 }
diff --git a/src/pocketmine/level/sound/AnvilUseSound.php b/src/pocketmine/level/sound/AnvilUseSound.php
index e3f501563..7036e7113 100644
--- a/src/pocketmine/level/sound/AnvilUseSound.php
+++ b/src/pocketmine/level/sound/AnvilUseSound.php
@@ -27,7 +27,7 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class AnvilUseSound extends GenericSound{
-	public function __construct(Vector3 $pos, $pitch = 0){
+	public function __construct(Vector3 $pos, float $pitch = 0){
 		parent::__construct($pos, LevelEventPacket::EVENT_SOUND_ANVIL_USE, $pitch);
 	}
 }
diff --git a/src/pocketmine/level/sound/BlazeShootSound.php b/src/pocketmine/level/sound/BlazeShootSound.php
index 1e5f47875..2da36d25b 100644
--- a/src/pocketmine/level/sound/BlazeShootSound.php
+++ b/src/pocketmine/level/sound/BlazeShootSound.php
@@ -27,7 +27,7 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class BlazeShootSound extends GenericSound{
-	public function __construct(Vector3 $pos, $pitch = 0){
+	public function __construct(Vector3 $pos, float $pitch = 0){
 		parent::__construct($pos, LevelEventPacket::EVENT_SOUND_BLAZE_SHOOT, $pitch);
 	}
 }
diff --git a/src/pocketmine/level/sound/ClickSound.php b/src/pocketmine/level/sound/ClickSound.php
index e103b0e91..9ca035309 100644
--- a/src/pocketmine/level/sound/ClickSound.php
+++ b/src/pocketmine/level/sound/ClickSound.php
@@ -27,7 +27,7 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class ClickSound extends GenericSound{
-	public function __construct(Vector3 $pos, $pitch = 0){
+	public function __construct(Vector3 $pos, float $pitch = 0){
 		parent::__construct($pos, LevelEventPacket::EVENT_SOUND_CLICK, $pitch);
 	}
 }
diff --git a/src/pocketmine/level/sound/DoorBumpSound.php b/src/pocketmine/level/sound/DoorBumpSound.php
index cd865ecea..0035b1ef7 100644
--- a/src/pocketmine/level/sound/DoorBumpSound.php
+++ b/src/pocketmine/level/sound/DoorBumpSound.php
@@ -27,7 +27,7 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class DoorBumpSound extends GenericSound{
-	public function __construct(Vector3 $pos, $pitch = 0){
+	public function __construct(Vector3 $pos, float $pitch = 0){
 		parent::__construct($pos, LevelEventPacket::EVENT_SOUND_DOOR_BUMP, $pitch);
 	}
 }
diff --git a/src/pocketmine/level/sound/DoorCrashSound.php b/src/pocketmine/level/sound/DoorCrashSound.php
index 98a626059..e9e817b4b 100644
--- a/src/pocketmine/level/sound/DoorCrashSound.php
+++ b/src/pocketmine/level/sound/DoorCrashSound.php
@@ -27,7 +27,7 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class DoorCrashSound extends GenericSound{
-	public function __construct(Vector3 $pos, $pitch = 0){
+	public function __construct(Vector3 $pos, float $pitch = 0){
 		parent::__construct($pos, LevelEventPacket::EVENT_SOUND_DOOR_CRASH, $pitch);
 	}
 }
diff --git a/src/pocketmine/level/sound/DoorSound.php b/src/pocketmine/level/sound/DoorSound.php
index c7b0919c8..2da8ed919 100644
--- a/src/pocketmine/level/sound/DoorSound.php
+++ b/src/pocketmine/level/sound/DoorSound.php
@@ -27,7 +27,7 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class DoorSound extends GenericSound{
-	public function __construct(Vector3 $pos, $pitch = 0){
+	public function __construct(Vector3 $pos, float $pitch = 0){
 		parent::__construct($pos, LevelEventPacket::EVENT_SOUND_DOOR, $pitch);
 	}
 }
diff --git a/src/pocketmine/level/sound/FizzSound.php b/src/pocketmine/level/sound/FizzSound.php
index 708b3f533..944f9b746 100644
--- a/src/pocketmine/level/sound/FizzSound.php
+++ b/src/pocketmine/level/sound/FizzSound.php
@@ -27,7 +27,7 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class FizzSound extends GenericSound{
-	public function __construct(Vector3 $pos, $pitch = 0){
+	public function __construct(Vector3 $pos, float $pitch = 0){
 		parent::__construct($pos, LevelEventPacket::EVENT_SOUND_FIZZ, $pitch);
 	}
 }
diff --git a/src/pocketmine/level/sound/GenericSound.php b/src/pocketmine/level/sound/GenericSound.php
index c7071d2ea..cb9099854 100644
--- a/src/pocketmine/level/sound/GenericSound.php
+++ b/src/pocketmine/level/sound/GenericSound.php
@@ -28,24 +28,25 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class GenericSound extends Sound{
 
-	public function __construct(Vector3 $pos, $id, $pitch = 0){
+	/** @var int */
+	protected $id;
+	/** @var float */
+	protected $pitch = 0;
+
+	public function __construct(Vector3 $pos, int $id, float $pitch = 0){
 		parent::__construct($pos->x, $pos->y, $pos->z);
-		$this->id = (int) $id;
-		$this->pitch = (float) $pitch * 1000;
+		$this->id = $id;
+		$this->pitch = $pitch * 1000;
 	}
 
-	protected $pitch = 0;
-	protected $id;
-
-	public function getPitch(){
+	public function getPitch() : float{
 		return $this->pitch / 1000;
 	}
 
-	public function setPitch($pitch){
-		$this->pitch = (float) $pitch * 1000;
+	public function setPitch(float $pitch) : void{
+		$this->pitch = $pitch * 1000;
 	}
 
-
 	public function encode(){
 		$pk = new LevelEventPacket;
 		$pk->evid = $this->id;
diff --git a/src/pocketmine/level/sound/GhastShootSound.php b/src/pocketmine/level/sound/GhastShootSound.php
index 0e4566e15..09000042e 100644
--- a/src/pocketmine/level/sound/GhastShootSound.php
+++ b/src/pocketmine/level/sound/GhastShootSound.php
@@ -27,7 +27,7 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class GhastShootSound extends GenericSound{
-	public function __construct(Vector3 $pos, $pitch = 0){
+	public function __construct(Vector3 $pos, float $pitch = 0){
 		parent::__construct($pos, LevelEventPacket::EVENT_SOUND_GHAST_SHOOT, $pitch);
 	}
 }
diff --git a/src/pocketmine/level/sound/GhastSound.php b/src/pocketmine/level/sound/GhastSound.php
index 1a18cec09..cef339b38 100644
--- a/src/pocketmine/level/sound/GhastSound.php
+++ b/src/pocketmine/level/sound/GhastSound.php
@@ -27,7 +27,7 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class GhastSound extends GenericSound{
-	public function __construct(Vector3 $pos, $pitch = 0){
+	public function __construct(Vector3 $pos, float $pitch = 0){
 		parent::__construct($pos, LevelEventPacket::EVENT_SOUND_GHAST, $pitch);
 	}
 }
diff --git a/src/pocketmine/level/sound/LaunchSound.php b/src/pocketmine/level/sound/LaunchSound.php
index a5a2170c5..2ad2e3bfd 100644
--- a/src/pocketmine/level/sound/LaunchSound.php
+++ b/src/pocketmine/level/sound/LaunchSound.php
@@ -27,7 +27,7 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class LaunchSound extends GenericSound{
-	public function __construct(Vector3 $pos, $pitch = 0){
+	public function __construct(Vector3 $pos, float $pitch = 0){
 		parent::__construct($pos, LevelEventPacket::EVENT_SOUND_SHOOT, $pitch);
 	}
 }
diff --git a/src/pocketmine/level/sound/PopSound.php b/src/pocketmine/level/sound/PopSound.php
index ee514c111..adb768ac6 100644
--- a/src/pocketmine/level/sound/PopSound.php
+++ b/src/pocketmine/level/sound/PopSound.php
@@ -27,7 +27,7 @@ use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class PopSound extends GenericSound{
-	public function __construct(Vector3 $pos, $pitch = 0){
+	public function __construct(Vector3 $pos, float $pitch = 0){
 		parent::__construct($pos, LevelEventPacket::EVENT_SOUND_POP, $pitch);
 	}
 }