It is really just this simple... A mob can only move from one ppoint to an adjacent ppoint. Those ppoints are placed, in such a way to avoid obstacles in a zone. Those ppoints are placed in 3 dimensions to avoid Z problems. Those ppoints are ALL a mob needs to do pathing.
In Wide Opens, NO geometry is taken into account. A straight line from A to B is used, assuming BOTH points are inside the same wide open.
It CAN be done in the emu, and without the overhead you all seem to think it will cause. A* pathing is very rudimentary, and easy on the resources as long as you don't go overboard with it. Yes, a zone with 1k wandering mobs would be a killer. Yes, on lower end systems here, you would have to keep the number of roamers down.. probably couldn't do as many as live EQ. But you can still have roamers, and you can still have pathing so that statics when tagged will follow proper pathing.
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