diff --git a/aiocraft/mc/definitions.py b/aiocraft/mc/definitions.py
index 674a2c9..c08897f 100644
--- a/aiocraft/mc/definitions.py
+++ b/aiocraft/mc/definitions.py
@@ -1,12 +1,20 @@
+from math import sqrt
 from enum import Enum
 from dataclasses import dataclass
 
 @dataclass # TODO use the one from types
-class Position:
+class BlockPos:
 	x : float
 	y : float
 	z : float
 
+	def distance(self, p:'BlockPos'):
+		return sqrt(
+			( self.x - p.x ) ** 2 +
+			( self.y - p.y ) ** 2 +
+			( self.z - p.z ) ** 2
+		)
+
 class Dimension(Enum):
 	NETHER = -1
 	OVERWORLD = 0