MainScript.CheckIfTargetIsInRange C# (CSharp) Method

    public bool CheckIfTargetIsInRange(Transform tAttacker, Transform tTarget, float fAttackRange)
    {
        bool rv = false;

        // No target? Get out
        if(!tTarget)
            return false;

        // Projects the position in 2D, using only the x and z axis
        Vector2 v2TargetPosition = new Vector2(tTarget.transform.position.x, tTarget.transform.position.z);
        Vector2 v2AttackerPosition = new Vector2(tAttacker.transform.position.x, tAttacker.transform.position.z);

        Vector2 v2Diff = v2TargetPosition - v2AttackerPosition;

        if(v2Diff.magnitude <= (fAttackRange * fAttackRange)) {

            rv = true;
        }

        return rv;
    }