I need some help determining which methods of path finding i should use. The scenario is that i want 100-1000 agents (with steering behaviors) moving to a single location (the player) via a flow field. I am currently following this PDF for guidance (Supreme Commander 2 Pathfinding) but a lot of the technologies they use are meant for an RTS. Different groups of agents often have different goals to move toward to. Since i have a single, consistent goal, would i still implement things like an A* search through sectors based on an agent's location in the map (there's a lot of agents so..), or would i simply generate the flow fields in the sectors that are occupied?
Basically, since i have a single target at all times, which technologies should i use and which should i forget about