To get units avoid the enemy units by a safe margin I have to bake the enemy units LOS into the obstacle map. First I'm saving the LOS of each unit into a separate layer. Then I'm merging all the layers and save the result into the obstacle map. Ranged units can attack workers from distance. I'm also saving the areas from which a worker can be attacked. One layer per worker. Then I'm merging those too. When a ranged unit has to attack a worker it moves to a tile from which a worker can be