How do MAgent handle collision?

[jiangwei221]

Hi geek-ai:

Thank you for contributing this great work! I want know how MAgent handle collision? Could you provide some information about the mechanism of avoiding collision or handling the collision when it happens?

Thank you for your time!

[merrymercy]

In the grid world, one grid can hold only one agent. When two agents want to move into a same grid, the agent with smaller ID move first. So it can occupy that grid.

You can also add randomness here (uncomment the line below). Related code: https://github.com/geek-ai/MAgent/blob/872680a8b9fee02c527306e65c4aeee1641b11a5/src/gridworld/GridWorld.cc#L573-L584

[laker-sprus]

Thank you for the nice work. I have two questions. 1.Many demo use "Event reward" to define the reward rule, such as gw.Event(arm1_1, 'attack', arm0_1). I am wandering where to add other Events(beside "kill" or "attack") for rewards? 2.How can I give different reward values to different agents in a same group without using the "Event reward"? Hope your reply, thanks a lot.

[merrymercy]

You can always hack into the system and add your own reward. The hack can be added in either python training loop or c++ game engine.

[laker-sprus]

Thank you very much.