diff --git a/src/pocketmine/Player.php b/src/pocketmine/Player.php
index 84d128e75..c083288f1 100644
--- a/src/pocketmine/Player.php
+++ b/src/pocketmine/Player.php
@@ -186,7 +186,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	public static function isValidUserName(string $name) : bool{
 		$lname = strtolower($name);
 		$len = strlen($name);
-		return $lname !== "rcon" and $lname !== "console" and $len >= 1 and $len <= 16 and preg_match("/[^A-Za-z0-9_]/", $name) === 0;
+		return $lname !== "rcon" and $lname !== "console" and $len >= 1 and $len <= 16 and preg_match("/[^A-Za-z0-9_ ]/", $name) === 0;
 	}
 
 	/**
diff --git a/src/pocketmine/command/SimpleCommandMap.php b/src/pocketmine/command/SimpleCommandMap.php
index 352d93d3d..1587344a1 100644
--- a/src/pocketmine/command/SimpleCommandMap.php
+++ b/src/pocketmine/command/SimpleCommandMap.php
@@ -223,7 +223,7 @@ class SimpleCommandMap implements CommandMap{
 	}
 
 	public function dispatch(CommandSender $sender, string $commandLine) : bool{
-		$args = explode(" ", $commandLine);
+		$args = array_map("stripslashes", str_getcsv($commandLine, " "));
 		$sentCommandLabel = "";
 		$target = $this->matchCommand($sentCommandLabel, $args);
 
diff --git a/src/pocketmine/utils/Binary.php b/src/pocketmine/utils/Binary.php
index 6ae9ce3a5..9b3c8c547 100644
--- a/src/pocketmine/utils/Binary.php
+++ b/src/pocketmine/utils/Binary.php
@@ -285,7 +285,7 @@ class Binary{
 	 */
 	public static function readFloat(string $str) : float{
 		self::checkLength($str, 4);
-		return (ENDIANNESS === self::BIG_ENDIAN ? unpack("f", $str)[1] : unpack("f", strrev($str))[1]);
+		return unpack("G", $str)[1];
 	}
 
 	/**
@@ -307,7 +307,7 @@ class Binary{
 	 * @return string
 	 */
 	public static function writeFloat(float $value) : string{
-		return ENDIANNESS === self::BIG_ENDIAN ? pack("f", $value) : strrev(pack("f", $value));
+		return pack("G", $value);
 	}
 
 	/**
@@ -318,7 +318,7 @@ class Binary{
 	 */
 	public static function readLFloat(string $str) : float{
 		self::checkLength($str, 4);
-		return (ENDIANNESS === self::BIG_ENDIAN ? unpack("f", strrev($str))[1] : unpack("f", $str)[1]);
+		return unpack("g", $str)[1];
 	}
 
 	/**
@@ -340,7 +340,7 @@ class Binary{
 	 * @return string
 	 */
 	public static function writeLFloat(float $value) : string{
-		return ENDIANNESS === self::BIG_ENDIAN ? strrev(pack("f", $value)) : pack("f", $value);
+		return pack("g", $value);
 	}
 
 	/**
@@ -361,7 +361,7 @@ class Binary{
 	 */
 	public static function readDouble(string $str) : float{
 		self::checkLength($str, 8);
-		return ENDIANNESS === self::BIG_ENDIAN ? unpack("d", $str)[1] : unpack("d", strrev($str))[1];
+		return unpack("E", $str)[1];
 	}
 
 	/**
@@ -371,7 +371,7 @@ class Binary{
 	 * @return string
 	 */
 	public static function writeDouble(float $value) : string{
-		return ENDIANNESS === self::BIG_ENDIAN ? pack("d", $value) : strrev(pack("d", $value));
+		return pack("E", $value);
 	}
 
 	/**
@@ -382,7 +382,7 @@ class Binary{
 	 */
 	public static function readLDouble(string $str) : float{
 		self::checkLength($str, 8);
-		return ENDIANNESS === self::BIG_ENDIAN ? unpack("d", strrev($str))[1] : unpack("d", $str)[1];
+		return unpack("e", $str)[1];
 	}
 
 	/**
@@ -391,7 +391,7 @@ class Binary{
 	 * @return string
 	 */
 	public static function writeLDouble(float $value) : string{
-		return ENDIANNESS === self::BIG_ENDIAN ? strrev(pack("d", $value)) : pack("d", $value);
+		return pack("e", $value);
 	}
 
 	/**
diff --git a/tests/preprocessor b/tests/preprocessor
index 4611a31fe..fcfaad89c 160000
--- a/tests/preprocessor
+++ b/tests/preprocessor
@@ -1 +1 @@
-Subproject commit 4611a31fe95f6b56cac126308cc0d098a28dde01
+Subproject commit fcfaad89c0605dd7ad345abea82da19cf625a888