<function name="DistToSqr" parent="Vector" type="classfunc"> <description>Returns the squared distance of 2 vectors, this is faster than <page>Vector:Distance</page> as calculating the square root is an expensive process.</description> <realm>Shared</realm> <args> <arg name="otherVec" type="Vector">The vector to calculate the distance to.</arg> </args> <rets> <ret name="" type="number">Squared distance to the vector</ret> </rets> </function> <example> <description>Checks if a player is within `dist` units of another player in the most efficient way possible.</description> <code> function PlayerWithinBounds(ply,otherPly, dist) return ply:GetPos():DistToSqr(otherPly:GetPos()) &lt; (dist*dist) return ply:GetPos():DistToSqr(otherPly:GetPos()) < (dist*dist) -- This is computationally faster than: -- ply:GetPos():Distance(otherPly:GetPos()) &lt; dist -- ply:GetPos():Distance(otherPly:GetPos()) < dist end print(PlayerWithinBounds(Entity(1),Entity(2),500)) </code> <output>true</output> </example>