Determine whether or not a piece can move along a line of attack

[programarivm]

At the moment the isLineOfAttackSafe() method is making a virtual move to determine whether or not a piece can move along a line of attack. However, it can be refactored in terms of lines of attack and defense among pieces without making the virtual move.

See:

• line()

Examples:

• line_of_attack_f5()