public static void generateMice(int number, Position p, Mouse f, Mouse m) { Stream.history("Colony.generateMice(" + number + ")"); if (p == null) { p = new Position( MouseSim.rand.nextInt(MouseSim.getWorldSizeRow()), MouseSim.rand.nextInt(MouseSim.getWorldSizeCol())); } while (number > 0) { generateBaby(p, f, m); number--; } }