Attempt at avoiding certain death situations in codegolf.se koth dogfight

dogfight_dangerzone.java

    // has this plane hit a wall, or is it guaranteed to?
    boolean dangerZone(Plane icarus) {
        // outside the arena is instant death
        if (!icarus.getPosition().isInArena(arenaSize)) {
            return true;
        }
        // adjacent to a wall?
        // directly facing the wall?
        // death next turn
        if (
            icarus.getDirection().getMainDirections().length==1 &&
            icarus.getDistanceFromWall(icarus.getDirection().getMainDirections()[0]) == 0
        ) {
            // System.err.println("death case 1!");
            return true;
        }
        // on an edge?
        // 2d diagonal facing into that edge?
        // death next turn
        if (
            icarus.getDirection().getMainDirections().length==2 &&
            icarus.getDistanceFromWall(icarus.getDirection().getMainDirections()[0]) == 0 &&
            icarus.getDistanceFromWall(icarus.getDirection().getMainDirections()[1]) == 0
        ) {
            // System.err.println("death case 2!");
            return true;
        }
        // near a corner?
        // 3d diagonal facing into that corner?
        // death in 1-2 turns
        if (
            icarus.getDirection().getMainDirections().length==3 &&
            icarus.getDistanceFromWall(icarus.getDirection().getMainDirections()[0]) < 2 &&
            icarus.getDistanceFromWall(icarus.getDirection().getMainDirections()[1]) < 2 &&
            icarus.getDistanceFromWall(icarus.getDirection().getMainDirections()[2]) < 2
        ) {
            // System.err.println("death case 3!");
            return true;
        }
        // there's at least one way out of this position
        return false;
    }
    
    ArrayList<Direction> potentialDirections_turn  = new ArrayList<Direction>();
    ArrayList<Direction> potentialDirections_drift = new ArrayList<Direction>();

    for (Direction candidateDirection : myPlanes[i].getPossibleDirections()) {
        Plane future = new Plane(arenaSize, 0, myPlanes[i].getDirection(), myPlanes[i].getPosition().add(candidateDirection.getAsPoint3D())); 
        if (!dangerZone(future)) {
            potentialDirections_drift.add(candidateDirection);
        }
        future = new Plane(arenaSize, 0, candidateDirection, myPlanes[i].getPosition().add(candidateDirection.getAsPoint3D())); 
        if (!dangerZone(future)) {
            potentialDirections_turn.add(candidateDirection);
        }
    }