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Supreme commander 2 used flowfield for their pathfinding. Flowfield does an ok job, but it actively tries to group units together by giving them little pushes in the correct direction.

As a result, in competitive play, players would leave one or two units at home, when they advance they would select all their front line units and move forward, when they retreat they would select all their front line units plus the units at base, and flowfield would cause the front line retreat to exceed unit velocity!




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