public void decProb (Move m)
	{
		int index = -1;
		switch(m)
		{
		case North: index = 0; break;
		case South: index = 1; break;
		case West : index = 2; break;
		case East : index = 3; break;
		}

		rawProbs[index] -= 10;
		if(rawProbs[index] < 1)
			rawProbs[index] = 1;
		probs = normalize(rawProbs);
	}