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geek-ai / MAgent

A Platform for Many-Agent Reinforcement Learning
MIT License
1.68k stars 332 forks source link

conflicting actions #74

Closed MarkusMontenegro closed 4 years ago

MarkusMontenegro commented 4 years ago

Hi, What is the handling of conflicting actions? For example, if there are 2 agents with 1 space between them, what happens if they decide in the same round to walk on this field? Is the action canceled for both of them in this round or is just one of them getting the action? I'm experiencing some kinds of deadlocks, where some agents have the same rewarding option, but instead of doing it, they do nothing and wait until the other agents with this option are gone to do it. Are their actions canceled because of the conflict?

merrymercy commented 4 years ago

If there are conflicting actions, one random agent will have the higher priority. Then the action of another agent will be canceled.

MarkusMontenegro commented 4 years ago

Is it possible to change thsi behavior, so that the agent with the lowest id always has the highest priority?