Dave's GURPS World

Opportunity Fire is a Wait Maneuver b366. As per those rules state Maneuver : Attack : Trigger : Area. (see examples below)

	What	Move	Attack	Notes
Opportunity fire b390	Attack during opponents turn	None	one, mandatory	State yds watched, may count as a turn of aim. See below for the maximum column of aim
Opportunity fire & Step	Attack during opponents turn	Step	one, mandatory	State yards watched, may count as a turn of aim. See below for the maximum column of aim or 1 turn  (ACC only) which ever is less
Wait	Typ. Attack during opponents turn	None	One, mandatory, modified by bulk	State what you are waiting for, the maximum column of aim is bulk. No aim possible.
Aim & Wait				See Aim

Yards watched	Mod	Opportunity fire counts as a turn of aiming when;
1	0	ACC + 2 Turns of aiming (3 aim column max.)
2	-1	ACC only (1 aim column max.)
Line	-2	ACC only, A line is flat, (1 aim column max.)
3 to 4	-2	No ACC or aim, (0 aim column max.)
5 to 6	-3	No ACC or aim, (0 aim column max.)
7 to 10	-4	No ACC or aim, (0 aim column max.)

Use Target Discrimination rules b390 for modifiers to all of the above.

    For a Wait with firearms use the bulk modifier. This is a change from the standard rules. This will allow a weapon with a low bulk mod (typically a pistol) to be much more useful in close quarters then a rifle.

4 things to declare Maneuver : Attack : Trigger : Area

Examples:
    Opportunity Fire : Determined attack : First person to enter : watch those two yards, points to them (counts as a turn of aim if not triggered).

    Opportunity Fire : Normal Attack :  the second person that enters : watch that yard, points to it (counts as a turn of aim if not triggered, also this also will have a -2 to hit as per Target Discrimination b390.)

    Wait : Normal Attack : first foe : that comes within 2yds. This will have a -2 to hit as per Target Discrimination b390, on the bulk column.

 Troublesome Triggers & GM rulings:
"The first foe that attaks me" "The first attack on me"
These are not valid triggers pick something else.


Dave's GURPS World

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