multiagent/scenarios/simple_world_comm.py [213:222]:
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        comm = []
        other_pos = []
        other_vel = []
        for other in world.agents:
            if other is agent: continue
            comm.append(other.state.c)
            other_pos.append(other.state.p_pos - agent.state.p_pos)
            if not other.adversary:
                other_vel.append(other.state.p_vel)
        return np.concatenate([agent.state.p_vel] + [agent.state.p_pos] + entity_pos + other_pos + other_vel)
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