Function GridNodeBase.OffsetToConnectionDirection

int OffsetToConnectionDirection (

int	dx	X coordinate delta. Should be in the range [-1, 1]. Values outside this range will cause -1 to be returned.
int	dz	Z coordinate delta. Should be in the range [-1, 1]. Values outside this range will cause -1 to be returned.

)

Converts from a delta (dx, dz) to a neighbour direction.

For example, if dx=1 and dz=0, the return value will be 1, which is the direction to the right of a grid coordinate.

If dx=0 and dz=0, the return value will be -1.

Z
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6 2 5
\ | /
-- 3 - X - 1 ----- X
/ | \
7 0 4

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