Nubstar wrote:

:o

sqrt((x2-x1)^2 + (y2-y1)^2)

A few things worth noting:

• In BYOND the power operator is **, instead of ^ as it is in some languages. (I prefer to show a formula with ^ though, so this is just a heads-up, not a critique of the post.)
• You shouldn't use ** in your calculations if you can avoid it. Instead I'd either just multiply outright or use temporary values like dx=x2-x1.
• If you can avoid using sqrt(), that's even better. Comparing squared distance is often as useful.
  
  Lummox JR

Many thanks. Is there a particular reason the x^y function is slower than long multiplication?

Well first of all ^ isn't really slow but it's the exclusive or operator :).

** is expensive since I'm sure it supports decimal values in the exponent so odds are it doesn't do a simple multiplication exansion.