public Creature removeCreature(int index){
        if(index < 0 || index >= creatureList.length)
            return null;

        Creature temp = creatureList[index];
        for ( int i = index; i < creatureList.length-1; i++ )
            creatureList[i] = creatureList[i + 1];

        decreaseArray();
        return temp;
	}