- Calculate the x y coordinates of the student
- Find the X, Y or Z axis nearest to the student (the axis that the student can go on it with least step).
- Calculate the number of steps to nearest axis + the number of steps from new place in nearest axis to central cell.

Note:
On X axis : x = 0
On Y axis : x = y
On Z axis : x = -y
Least steps to X: x + step * xDir = 0                   => step = ?
Least steps to Y: x + step * xDir = y + step * yDir     => step = ?
Least steps to Z: x + step * xDir = - (y + step * yDir) => step = ?

Of which:
X axis : (xDir, yDir) = (0,2)
Y axis : (xDir, yDir) = (1,1)
Z axis : (xDir, yDir) = (1,-1)

Chúc các bạn may mắn :)

Edited by author 09.02.2011 09:40

Edited by author 09.02.2011 09:41