SC2Mapster

@Crockeo: Go

have 2 triggers with this events: "unit enters region" and "unit leaves region"

"add triggering unit to unit group" and "remove triggering unit from unit group"

To give the units money create a trigger with the following event: "periodic event" Every 15 seconds

Then something like that:

If unit is in unit group then
     if unit 2 is in unit group then
        
         else give player 100 minerals and 100 gas