Crowd Simulation Question

[dev_nerurkar]

Hi,

I am creating a crowd simulation for a swarm of rats where the rats start running towards a target and then they slow down as they approach the target. After instancing particles with the animated running rat geometry there is one object in the instancer node which is that of running rat. I am wondering if it is possible to swap that out with a walking animation object on a per particle basis i.e when the particles approach target then walk animation should play. If they are far away then run animation should play.
Right now either all particles in the particle object run or all walk. Is it possible to make some of them walk and some of them run for the same particle object?

Thanks,
Dev

[thnkr]

See if you can get hold of a DVD that Alias published in 2004. It was done by Adrian Graham and is called "Advanced Particle Instancing". It covers this topic.