At what point in the impulse is the charge test taken? when i decide that is my plan, when im in the hex or next to the hex? i cant figure out when.
The reaction test is taken prior to you moving into the same hex as whatever it is that you're charging. In the minis rules it's prior to you moving within 4 inches of the target. (I believe) Either way it's when you decide to attack the target in melee. You test the reaction "Wanting to Charge" and follow the results. Remember Stars can choose their reaction based on the passing 0, 1 or 2d6. (Grunts live and die with the roll)