registry team mailing list archive

[Felix Oxley <574212@xxxxxxxxxxxxxxxxxx>]

Just a clarification on the patch to make it easier to be merged
upstream:

In the shipping code the worm-> list is reversed before the data of movement of the tail is captured.
This provides the wrong answer.

The patch ensures that the direction of the tail is computed before any
changes are made to the current worm data.

The existing code then _correctly_ reverses the old_dir because it
represents the direction of motion of the tail rather than the direction
in which the tail is pointing.

The direction in which the tail is pointing prior to reversal is of
course the direction that we want to finally assign as the new direction
of motion.

Hope that helps.

-- 
Nibbles - Unexpected Death
https://bugs.launchpad.net/bugs/574212
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