private Action decide(Perception perception) {
        // todo modify to improve the ReactiveAgent's decision process

        if (perception.getN() != null && !perception.getN().hasWall() && !perception.getN().hasAgent()){
            return Action.NORTH;
        }

        if (perception.getW() != null && !perception.getW().hasWall() && !perception.getW().hasAgent()){
            return Action.WEST;
        }

        if (perception.getS() != null && !perception.getS().hasWall() && !perception.getS().hasAgent()){
            return Action.SOUTH;
        }

        if (perception.getE() != null && !perception.getE().hasWall() && !perception.getE().hasAgent()){
            return Action.EAST;
        }

        return Action.WEST; // life is peaceful there :-)
    }