# WalkerCompareDir

Compares direction vectors of two walkers

Syntax: `WalkerCompareDir(wa,wb)`

* `wa` walker a to compare with walker b
* `wb` walker b to compare with walker a

Returns: Returned number reflects the relation between two direction vectors

* 0 Direction vectors are perpendicular
* 1 Directions are same
* -1 Directions are opposite

Example: `WalkerCompareDir(wlka,wlkb)`
