added some nullable and void typehints to Block API

src/pocketmine/block/Air.php

@@ -24,6 +24,7 @@ declare(strict_types=1);
 namespace pocketmine\block;
 
 use pocketmine\item\Item;
+use pocketmine\math\AxisAlignedBB;
 
 
 /**
@@ -66,7 +67,7 @@ class Air extends Transparent{
 		return false;
 	}
 
-	public function getBoundingBox(){
+	public function getBoundingBox() : ?AxisAlignedBB{
 		return null;
 	}
 

src/pocketmine/block/Bed.php

@@ -54,7 +54,7 @@ class Bed extends Transparent{
 		return "Bed Block";
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		return new AxisAlignedBB(
 			$this->x,
 			$this->y,
@@ -125,7 +125,7 @@ class Bed extends Transparent{
 	/**
 	 * @return Bed|null
 	 */
-	public function getOtherHalf(){
+	public function getOtherHalf() : ?Bed{
 		$other = $this->getSide(self::getOtherHalfSide($this->meta, $this->isHeadPart()));
 		if($other instanceof Bed and $other->getId() === $this->getId() and $other->isHeadPart() !== $this->isHeadPart() and (($other->getDamage() & 0x03) === ($this->getDamage() & 0x03))){
 			return $other;

src/pocketmine/block/Block.php

@@ -116,7 +116,7 @@ class Block extends Position implements BlockIds, Metadatable{
 	/**
 	 * @param int $meta
 	 */
-	final public function setDamage(int $meta){
+	final public function setDamage(int $meta) : void{
 		if($meta < 0 or $meta > 0xf){
 			throw new \InvalidArgumentException("Block damage values must be 0-15, not $meta");
 		}
@@ -391,7 +391,7 @@ class Block extends Position implements BlockIds, Metadatable{
 	}
 
 
-	public function addVelocityToEntity(Entity $entity, Vector3 $vector){
+	public function addVelocityToEntity(Entity $entity, Vector3 $vector) : void{
 
 	}
 
@@ -400,7 +400,7 @@ class Block extends Position implements BlockIds, Metadatable{
 	 *
 	 * @param Position $v
 	 */
-	final public function position(Position $v){
+	final public function position(Position $v) : void{
 		$this->x = (int) $v->x;
 		$this->y = (int) $v->y;
 		$this->z = (int) $v->z;
@@ -497,14 +497,14 @@ class Block extends Position implements BlockIds, Metadatable{
 	/**
 	 * @param Entity $entity
 	 */
-	public function onEntityCollide(Entity $entity){
+	public function onEntityCollide(Entity $entity) : void{
 
 	}
 
 	/**
 	 * @return AxisAlignedBB|null
 	 */
-	public function getBoundingBox(){
+	public function getBoundingBox() : ?AxisAlignedBB{
 		if($this->boundingBox === null){
 			$this->boundingBox = $this->recalculateBoundingBox();
 		}
@@ -514,7 +514,7 @@ class Block extends Position implements BlockIds, Metadatable{
 	/**
 	 * @return AxisAlignedBB|null
 	 */
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		return new AxisAlignedBB(
 			$this->x,
 			$this->y,
@@ -531,7 +531,7 @@ class Block extends Position implements BlockIds, Metadatable{
 	 *
 	 * @return MovingObjectPosition|null
 	 */
-	public function calculateIntercept(Vector3 $pos1, Vector3 $pos2){
+	public function calculateIntercept(Vector3 $pos1, Vector3 $pos2) : ?MovingObjectPosition{
 		$bb = $this->getBoundingBox();
 		if($bb === null){
 			return null;

src/pocketmine/block/BlockFactory.php

@@ -56,7 +56,7 @@ class BlockFactory{
 	 *
 	 * @param bool $force
 	 */
-	public static function init(bool $force = false){
+	public static function init(bool $force = false) : void{
 		if(self::$list === null or $force){
 			self::$list = new \SplFixedArray(256);
 			self::$fullList = new \SplFixedArray(4096);
@@ -341,7 +341,7 @@ class BlockFactory{
 	 * @throws \RuntimeException if something attempted to override an already-registered block without specifying the
 	 * $override parameter.
 	 */
-	public static function registerBlock(Block $block, bool $override = false){
+	public static function registerBlock(Block $block, bool $override = false) : void{
 		$id = $block->getId();
 
 		if(!$override and self::isRegistered($id)){

src/pocketmine/block/Cactus.php

@@ -54,7 +54,7 @@ class Cactus extends Transparent{
 		return "Cactus";
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		return new AxisAlignedBB(
 			$this->x + 0.0625,
@@ -70,7 +70,7 @@ class Cactus extends Transparent{
 		return true;
 	}
 
-	public function onEntityCollide(Entity $entity){
+	public function onEntityCollide(Entity $entity) : void{
 		$ev = new EntityDamageByBlockEvent($this, $entity, EntityDamageEvent::CAUSE_CONTACT, 1);
 		$entity->attack($ev);
 	}

src/pocketmine/block/Cake.php

@@ -48,7 +48,7 @@ class Cake extends Transparent implements FoodSource{
 		return "Cake Block";
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		$f = $this->getDamage() * 0.125; //1 slice width
 

src/pocketmine/block/Carpet.php

@@ -50,7 +50,7 @@ class Carpet extends Flowable{
 		return ColorBlockMetaHelper::getColorFromMeta($this->meta) . " Carpet";
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		return new AxisAlignedBB(
 			$this->x,

src/pocketmine/block/Chest.php

@@ -52,7 +52,7 @@ class Chest extends Transparent{
 		return Tool::TYPE_AXE;
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		return new AxisAlignedBB(
 			$this->x + 0.0625,
 			$this->y,

src/pocketmine/block/CobblestoneWall.php

@@ -57,7 +57,7 @@ class CobblestoneWall extends Transparent{
 		return "Cobblestone Wall";
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		$north = $this->canConnect($this->getSide(Vector3::SIDE_NORTH));
 		$south = $this->canConnect($this->getSide(Vector3::SIDE_SOUTH));

src/pocketmine/block/Cobweb.php

@@ -51,7 +51,7 @@ class Cobweb extends Flowable{
 		return Tool::TYPE_SWORD;
 	}
 
-	public function onEntityCollide(Entity $entity){
+	public function onEntityCollide(Entity $entity) : void{
 		$entity->resetFallDistance();
 	}
 

src/pocketmine/block/ConcretePowder.php

@@ -66,7 +66,7 @@ class ConcretePowder extends Fallable{
 	/**
 	 * @return null|Block
 	 */
-	private function checkAdjacentWater(){
+	private function checkAdjacentWater() : ?Block{
 		for($i = 1; $i < 6; ++$i){ //Do not check underneath
 			if($this->getSide($i) instanceof Water){
 				return Block::get(Block::CONCRETE, $this->meta);

src/pocketmine/block/Door.php

@@ -54,7 +54,7 @@ abstract class Door extends Transparent{
 		return $down & 0x07 | ($isUp ? 8 : 0) | ($isRight ? 0x10 : 0);
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		$f = 0.1875;
 		$damage = $this->getFullDamage();

src/pocketmine/block/EndPortalFrame.php

@@ -54,7 +54,7 @@ class EndPortalFrame extends Solid{
 		return false;
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		return new AxisAlignedBB(
 			$this->x,

src/pocketmine/block/EndRod.php

@@ -61,7 +61,7 @@ class EndRod extends Flowable{
 		return 14;
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		$m = $this->meta & ~0x01;
 		$width = 0.375;
 

src/pocketmine/block/Farmland.php

@@ -53,7 +53,7 @@ class Farmland extends Transparent{
 		return true;
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		return new AxisAlignedBB(
 			$this->x,
 			$this->y,

src/pocketmine/block/Fence.php

@@ -62,7 +62,7 @@ class Fence extends Transparent{
 		return $names[$this->meta & 0x07] ?? "Unknown";
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		$north = $this->canConnect($this->getSide(Vector3::SIDE_NORTH));
 		$south = $this->canConnect($this->getSide(Vector3::SIDE_SOUTH));

src/pocketmine/block/FenceGate.php

@@ -41,7 +41,7 @@ class FenceGate extends Transparent{
 	}
 
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		if(($this->getDamage() & 0x04) > 0){
 			return null;

src/pocketmine/block/Fire.php

@@ -65,7 +65,7 @@ class Fire extends Flowable{
 		return true;
 	}
 
-	public function onEntityCollide(Entity $entity){
+	public function onEntityCollide(Entity $entity) : void{
 		$ev = new EntityDamageByBlockEvent($this, $entity, EntityDamageEvent::CAUSE_FIRE, 1);
 		$entity->attack($ev);
 

src/pocketmine/block/Flowable.php

@@ -23,6 +23,8 @@ declare(strict_types=1);
 
 namespace pocketmine\block;
 
+use pocketmine\math\AxisAlignedBB;
+
 abstract class Flowable extends Transparent{
 
 	public function canBeFlowedInto() : bool{
@@ -41,7 +43,7 @@ abstract class Flowable extends Transparent{
 		return false;
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		return null;
 	}
 }

src/pocketmine/block/FlowerPot.php

@@ -47,7 +47,7 @@ class FlowerPot extends Flowable{
 		return "Flower Pot";
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		return new AxisAlignedBB(
 			$this->x + 0.3125,
 			$this->y,

src/pocketmine/block/GrassPath.php

@@ -44,7 +44,7 @@ class GrassPath extends Transparent{
 		return Tool::TYPE_SHOVEL;
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		return new AxisAlignedBB(
 			$this->x,
 			$this->y,

src/pocketmine/block/Ladder.php

@@ -59,12 +59,12 @@ class Ladder extends Transparent{
 		return true;
 	}
 
-	public function onEntityCollide(Entity $entity){
+	public function onEntityCollide(Entity $entity) : void{
 		$entity->resetFallDistance();
 		$entity->onGround = true;
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		$f = 0.1875;
 
 		$minX = $minZ = 0;

src/pocketmine/block/Lava.php

@@ -48,7 +48,7 @@ class Lava extends Liquid{
 		return "Lava";
 	}
 
-	public function onEntityCollide(Entity $entity){
+	public function onEntityCollide(Entity $entity) : void{
 		$entity->fallDistance *= 0.5;
 
 		$ev = new EntityDamageByBlockEvent($this, $entity, EntityDamageEvent::CAUSE_LAVA, 4);

src/pocketmine/block/Liquid.php

@@ -26,6 +26,7 @@ namespace pocketmine\block;
 use pocketmine\entity\Entity;
 use pocketmine\item\Item;
 use pocketmine\level\Level;
+use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Vector3;
 
 abstract class Liquid extends Transparent{
@@ -171,7 +172,7 @@ abstract class Liquid extends Transparent{
 		return $vector->normalize();
 	}
 
-	public function addVelocityToEntity(Entity $entity, Vector3 $vector){
+	public function addVelocityToEntity(Entity $entity, Vector3 $vector) : void{
 		$flow = $this->getFlowVector();
 		$vector->x += $flow->x;
 		$vector->y += $flow->y;
@@ -444,7 +445,7 @@ abstract class Liquid extends Transparent{
 		}
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		return null;
 	}
 

src/pocketmine/block/Magma.php

@@ -57,7 +57,7 @@ class Magma extends Solid{
 		return true;
 	}
 
-	public function onEntityCollide(Entity $entity){
+	public function onEntityCollide(Entity $entity) : void{
 		if(!$entity->isSneaking()){
 			$ev = new EntityDamageByBlockEvent($this, $entity, EntityDamageEvent::CAUSE_FIRE, 1);
 			$entity->attack($ev);

src/pocketmine/block/NetherBrickFence.php

@@ -48,7 +48,7 @@ class NetherBrickFence extends Transparent{
 		return "Nether Brick Fence";
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		$width = 0.375;
 
 		return new AxisAlignedBB(

src/pocketmine/block/SignPost.php

@@ -26,6 +26,7 @@ namespace pocketmine\block;
 use pocketmine\item\Item;
 use pocketmine\item\Tool;
 use pocketmine\level\Level;
+use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Vector3;
 use pocketmine\Player;
 use pocketmine\tile\Sign as TileSign;
@@ -53,7 +54,7 @@ class SignPost extends Transparent{
 		return "Sign Post";
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		return null;
 	}
 

src/pocketmine/block/Skull.php

@@ -47,7 +47,7 @@ class Skull extends Flowable{
 		return "Mob Head";
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		//TODO: different bounds depending on attached face (meta)
 		return new AxisAlignedBB(
 			$this->x + 0.25,

src/pocketmine/block/SoulSand.php

@@ -46,7 +46,7 @@ class SoulSand extends Solid{
 		return Tool::TYPE_SHOVEL;
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		return new AxisAlignedBB(
 			$this->x,

src/pocketmine/block/Stair.php

@@ -107,7 +107,7 @@ abstract class Stair extends Transparent{
 	}
 	*/
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		if(($this->getDamage() & 0x04) > 0){
 			return new AxisAlignedBB(

src/pocketmine/block/Thin.php

@@ -32,7 +32,7 @@ abstract class Thin extends Transparent{
 		return false;
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		$f = 0.4375;
 		$f1 = 0.5625;

src/pocketmine/block/Trapdoor.php

@@ -53,7 +53,7 @@ class Trapdoor extends Transparent{
 		return 3;
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		$damage = $this->getDamage();
 

src/pocketmine/block/Vine.php

@@ -71,11 +71,11 @@ class Vine extends Transparent{
 		return true;
 	}
 
-	public function onEntityCollide(Entity $entity){
+	public function onEntityCollide(Entity $entity) : void{
 		$entity->resetFallDistance();
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		$f1 = 1;
 		$f2 = 1;

src/pocketmine/block/Water.php

@@ -44,7 +44,7 @@ class Water extends Liquid{
 		return 2;
 	}
 
-	public function onEntityCollide(Entity $entity){
+	public function onEntityCollide(Entity $entity) : void{
 		$entity->resetFallDistance();
 		if($entity->fireTicks > 0){
 			$entity->extinguish();

src/pocketmine/block/WaterLily.php

@@ -45,7 +45,7 @@ class WaterLily extends Flowable{
 		return 0.6;
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 		return new AxisAlignedBB(
 			$this->x + 0.0625,
 			$this->y,

src/pocketmine/block/WoodenSlab.php

@@ -55,7 +55,7 @@ class WoodenSlab extends Transparent{
 		return (($this->meta & 0x08) === 0x08 ? "Upper " : "") . ($names[$this->meta & 0x07] ?? "") . " Wooden Slab";
 	}
 
-	protected function recalculateBoundingBox(){
+	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		if(($this->meta & 0x08) > 0){
 			return new AxisAlignedBB(