If {unit} is in front of [unit], then make [unit] attack {unit}

I need help with this trigger. I am trying to make a trigger so that when the player presses the down arrow, the unit they control attacks wahtever is in front of it. But I only want him to attack when they press the down arrow, not automatically. HELP!

I have got the down arrow and animation working, but I need a trigger that sees if there is a unit in front of my unit. How do I do this?

Thats interesting, I answered the same type of question to linkmaster yesterday (and i STILL cant find my wc3 cd...). Anyway, what you want to do is make a rect centered on the unit. Then make it offset from the unit by the degrees the unit is facing (thats a real). Then when they press the down button, tell it to attack one of those units. I cant be more specific cause as i mentioned I lost my wc3 cd.

Check to see if there are any units in point (X,Y) which is a point in front of the unit.

I think this can be done by giving the unit a second attack that does nothing and create a custom ability based of an orb. Set the enabled attack index to 2.

Then create a trigger that detects if the down key is pressed and then give it the orb ability and order it to attack a unit in front of him. This can be done by adding all units with a certain angle with the unit and within attack range of the unit to a group and then order the unit to attack a random unit from the group.

Then you need another trigger that removes the orb ability after the unit attacked.