MWII BattleMech Combat

1. Definition: Complex actions take real thinking and/or some time.
2. Evade. Same as a Run/Flank but units firing on target have an additional +1 to hit penalty. Can't Evade while Jumping.
3. Sprint. Unit gets Walk x 2 movement points. Units firing on target have an additional -1 to hit bonus. Sprinting unit has a +2 Piloting penalty until its next turn.
4. Fire at Multiple Targets. Unit can fire at multiple targets. All firing must be done at one instance. There is no usual +1 to hit penalty for secondary targets.
5. Indirect Fire. Unit can fire LRMs indirectly. Needs to have another unit that Spotted in their last movement. There is no +1 to hit penalty for indirect fire.
6. Charging/Ramming. This includes running movement.
7. Death from Above. This includes jumping movement.
8. Simple Action While Moving. Unit can do a simple action in the middle of movement. Unit can use this action to move a bit, fire, then move some more.
9. Opportunity Action. Unit can do a simple action at any time hereafter until the unit's next turn. A unit can only do an opportunity action based on another unit's declaration. If the unit doesn't declare movement then the opportunity action can be movement (Walk, Run, or Jump). Opportunity actions have precedence over preemptions. See below for Opportunity actions and preemptions.

1. When a unit declares an Opportunity Action it can preempt another unit at these times: after the unit declares, at any time during the declaring unit's movement or actions.
2. A unit with an Opportunity Action may only preempt the current declaring unit. Once a unit declares and moves it cannot be Opportunity Actioned against.
3. A unit with an Opportunity Action cannot preempt another unit before it declares. Units with an Opportunity Action are reacting to the current declaring unit.
4. Opportunity Actions can only be preempted by other Opportunity Actions; and only if the preempting unit has a higher initiative. They cannot be preempted by units with a higher initiative and no Opportunity Action declared.
5. A unit which does an Opportunity Action does not dissipate heat afterwards. Units only dissipate heat during their regular declarations. Exception: Vehicles and Infantry never build up heat; that's why they can't fire twice a turn.
6. A unit that did not move during its regular declaration may use an Opportunity Action to Walk/Run/Jump or the equivalent for vehicles and infantry.