[sebastiennight]

It's ASCII art, so the "trajectory" will always stay within the lines, because you can't have the ● and ║ characters intersect each other.

The only impressive part would be that the trajectory is "continuous", meaning for every ● there is always another ● character in one of the 4 adjacent positions.

[biophysboy]

I know the characters can’t cross. By intersect, I mean two dots on either side of a boundary line in the direction of the path.