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fuel leaking - fire

Hi guys,
I saw a Video of a cool effect in GTA V. A character holds a canister of fuel and spills it onto the ground while walking around. After igniting it, the fire follows the trail of fuel.
How would this be done? I don’t need a full solution, just somebody who points me in the right direction. Thanks,
Michael

I’m no pro and I don’t know what could be done with particles. So I would maybe create a “fuel volume” that gets placed above your “fuel spilled on ground” textures. Then you detect if one of those volumes gets hit by a bullet or whatever you like and create a fire effect at that place. Then you search for neighboring fuel volumes and set those on fire. If a burning fuel volume is close to your vehicle, damage it, let it explode etc. This would be my naive approach.