Idea which may change ca xD

I have an idea which may change the way we mod combat arms effectively. You know how zombies leave blood for their footprints. Can we make a mod which makes everything leave a bloody footprint so we can follow people around benefiting us with more kills. Can someone tell me how I can mod this?

Sorry, That's impossible

No it isn't. All players leaver a footprint, we just change the colour and shiz of it to make it look like blood. But.. why would you want to follow it around? You'd be so vunerable to being attacked.