private static void SeedWithBlinker(Universe universe)
{
// http://en.wikipedia.org/wiki/File:Game_of_life_blinker.gif
// XXX
universe.AddSeedCellAt(Coords.Create(0, 0));
universe.AddSeedCellAt(Coords.Create(1, 0));
universe.AddSeedCellAt(Coords.Create(2, 0));
}
private static void SeedWithGlider(Universe universe)
{
// http://en.wikipedia.org/wiki/File:Game_of_life_animated_glider.gif
// X
// XX
// XX
universe.AddSeedCellAt(Coords.Create(-5, 5));
universe.AddSeedCellAt(Coords.Create(-4, 4));
universe.AddSeedCellAt(Coords.Create(-3, 4));
universe.AddSeedCellAt(Coords.Create(-5, 3));
universe.AddSeedCellAt(Coords.Create(-4, 3));
}
private static void SeedWithBeacon(Universe universe)
{
// http://en.wikipedia.org/wiki/File:Game_of_life_beacon.gif
// XX
// XX
// XX
// XX
universe.AddSeedCellAt(Coords.Create(-1, 1));
universe.AddSeedCellAt(Coords.Create(-2, 1));
universe.AddSeedCellAt(Coords.Create(-1, 0));
universe.AddSeedCellAt(Coords.Create(-2, 0));
universe.AddSeedCellAt(Coords.Create(0, -1));
universe.AddSeedCellAt(Coords.Create(1, -1));
universe.AddSeedCellAt(Coords.Create(0, -2));
universe.AddSeedCellAt(Coords.Create(1, -2));
}
public void TheExpectedPatternShouldBeGeneratedWhenTheSeedIsBeacon()
{
// http://en.wikipedia.org/wiki/File:Game_of_life_beacon.gif
// XX
// XX
// XX
// XX
var setOfCoords1 = new[]
{
Coords.Create(-1, 1),
Coords.Create(-2, 1),
Coords.Create(-1, 0),
Coords.Create(-2, 0),
Coords.Create(0, -1),
Coords.Create(1, -1),
Coords.Create(0, -2),
Coords.Create(1, -2)
};
// XX
// X
// X
// XX
var setOfCoords2 = new[]
{
Coords.Create(-1, 1),
Coords.Create(-2, 1),
Coords.Create(-2, 0),
Coords.Create(1, -1),
Coords.Create(0, -2),
Coords.Create(1, -2)
};
var universe = new Universe();
MarkLiveCells(universe, setOfCoords1);
AssertThatGridContainsExpectedLiveCellsAfterTick(universe, setOfCoords2);
AssertThatGridContainsExpectedLiveCellsAfterTick(universe, setOfCoords1);
AssertThatGridContainsExpectedLiveCellsAfterTick(universe, setOfCoords2);
AssertThatGridContainsExpectedLiveCellsAfterTick(universe, setOfCoords1);
AssertThatGridContainsExpectedLiveCellsAfterTick(universe, setOfCoords2);
AssertThatGridContainsExpectedLiveCellsAfterTick(universe, setOfCoords1);
AssertThatGridContainsExpectedLiveCellsAfterTick(universe, setOfCoords2);
AssertThatGridContainsExpectedLiveCellsAfterTick(universe, setOfCoords1);
}
public static void SeedTheUniverse(Universe universe, int seedChoice)
{
switch (seedChoice)
{
case 1:
SeedWithBlinker(universe);
break;
case 2:
SeedWithToad(universe);
break;
case 3:
SeedWithBeacon(universe);
break;
case 4:
SeedWithPulsar(universe);
break;
case 5:
SeedWithGlider(universe);
break;
case 6:
SeedWithLightWeightSpaceShip(universe);
break;
case 7:
SeedWithRPentomino(universe);
break;
case 8:
SeedWithGun(universe);
break;
default:
SeedWithPulsar(universe);
break;
}
}
private static bool SomeLiveCellsAreWithinBounds(Universe universe)
{
var result = false;
universe.IterateLiveCells((coords, cellState) =>
{
if (GridCoordsAreWithinBounds(coords))
{
result = true;
}
});
return result;
}
private static ConsoleCtrlHandler.RunLoopResult RunLoop(Universe universe, int tickSleepInterval)
{
if (!DrawBoundedUniverse(universe))
{
return ConsoleCtrlHandler.RunLoopResult.Quit;
}
Thread.Sleep(tickSleepInterval);
universe.Tick();
return ConsoleCtrlHandler.RunLoopResult.KeepGoing;
}
public UnderpopulationRule(Universe grid)
{
_grid = grid;
}
private static void SeedWithGun(Universe universe)
{
// http://en.wikipedia.org/wiki/File:Game_of_life_glider_gun.svg
const int originX = -45;
const int originY = 25;
universe.AddSeedCellAt(Coords.Create(originX + 0, originY + 0));
universe.AddSeedCellAt(Coords.Create(originX + 0, originY + 1));
universe.AddSeedCellAt(Coords.Create(originX + 1, originY + 0));
universe.AddSeedCellAt(Coords.Create(originX + 1, originY + 1));
universe.AddSeedCellAt(Coords.Create(originX + 10, originY + 0));
universe.AddSeedCellAt(Coords.Create(originX + 10, originY + 1));
universe.AddSeedCellAt(Coords.Create(originX + 10, originY + -1));
universe.AddSeedCellAt(Coords.Create(originX + 11, originY + 2));
universe.AddSeedCellAt(Coords.Create(originX + 11, originY + -2));
universe.AddSeedCellAt(Coords.Create(originX + 12, originY + 3));
universe.AddSeedCellAt(Coords.Create(originX + 13, originY + 3));
universe.AddSeedCellAt(Coords.Create(originX + 12, originY + -3));
universe.AddSeedCellAt(Coords.Create(originX + 13, originY + -3));
universe.AddSeedCellAt(Coords.Create(originX + 14, originY + 0));
universe.AddSeedCellAt(Coords.Create(originX + 15, originY + 2));
universe.AddSeedCellAt(Coords.Create(originX + 15, originY + -2));
universe.AddSeedCellAt(Coords.Create(originX + 16, originY + 0));
universe.AddSeedCellAt(Coords.Create(originX + 16, originY + 1));
universe.AddSeedCellAt(Coords.Create(originX + 16, originY + -1));
universe.AddSeedCellAt(Coords.Create(originX + 17, originY + 0));
universe.AddSeedCellAt(Coords.Create(originX + 20, originY + 1));
universe.AddSeedCellAt(Coords.Create(originX + 20, originY + 2));
universe.AddSeedCellAt(Coords.Create(originX + 20, originY + 3));
universe.AddSeedCellAt(Coords.Create(originX + 21, originY + 1));
universe.AddSeedCellAt(Coords.Create(originX + 21, originY + 2));
universe.AddSeedCellAt(Coords.Create(originX + 21, originY + 3));
universe.AddSeedCellAt(Coords.Create(originX + 22, originY + 4));
universe.AddSeedCellAt(Coords.Create(originX + 22, originY + 0));
universe.AddSeedCellAt(Coords.Create(originX + 24, originY + 4));
universe.AddSeedCellAt(Coords.Create(originX + 24, originY + 5));
universe.AddSeedCellAt(Coords.Create(originX + 24, originY + 0));
universe.AddSeedCellAt(Coords.Create(originX + 24, originY + -1));
universe.AddSeedCellAt(Coords.Create(originX + 34, originY + 2));
universe.AddSeedCellAt(Coords.Create(originX + 34, originY + 3));
universe.AddSeedCellAt(Coords.Create(originX + 35, originY + 2));
universe.AddSeedCellAt(Coords.Create(originX + 35, originY + 3));
}
private void MarkLiveCells(Universe universe, params Coords[] setOfcoords)
{
foreach (var coords in setOfcoords)
{
universe.AddSeedCellAt(coords);
}
}
private static void SeedWithToad(Universe universe)
{
// http://en.wikipedia.org/wiki/File:Game_of_life_toad.gif
// XXX
// XXX
universe.AddSeedCellAt(Coords.Create(0, 0));
universe.AddSeedCellAt(Coords.Create(1, 0));
universe.AddSeedCellAt(Coords.Create(2, 0));
universe.AddSeedCellAt(Coords.Create(1, 1));
universe.AddSeedCellAt(Coords.Create(2, 1));
universe.AddSeedCellAt(Coords.Create(3, 1));
}
private static void SeedWithRPentomino(Universe universe)
{
// http://en.wikipedia.org/wiki/File:Game_of_life_fpento.svg
// XX
// XX
// X
universe.AddSeedCellAt(Coords.Create(15, 10));
universe.AddSeedCellAt(Coords.Create(15, 11));
universe.AddSeedCellAt(Coords.Create(15, 12));
universe.AddSeedCellAt(Coords.Create(16, 12));
universe.AddSeedCellAt(Coords.Create(14, 11));
}
private static void SeedWithPulsar(Universe universe)
{
// http://en.wikipedia.org/wiki/File:Game_of_life_pulsar.gif
// XXX XXX
//
// x x x x
// x x x x
// x x x x
// XXX XXX
//
// XXX XXX
// x x x x
// x x x x
// x x x x
//
// XXX XXX
universe.AddSeedCellAt(Coords.Create(2, 1));
universe.AddSeedCellAt(Coords.Create(3, 1));
universe.AddSeedCellAt(Coords.Create(4, 1));
universe.AddSeedCellAt(Coords.Create(2, 6));
universe.AddSeedCellAt(Coords.Create(3, 6));
universe.AddSeedCellAt(Coords.Create(4, 6));
universe.AddSeedCellAt(Coords.Create(1, 2));
universe.AddSeedCellAt(Coords.Create(1, 3));
universe.AddSeedCellAt(Coords.Create(1, 4));
universe.AddSeedCellAt(Coords.Create(6, 2));
universe.AddSeedCellAt(Coords.Create(6, 3));
universe.AddSeedCellAt(Coords.Create(6, 4));
universe.AddSeedCellAt(Coords.Create(-2, 1));
universe.AddSeedCellAt(Coords.Create(-3, 1));
universe.AddSeedCellAt(Coords.Create(-4, 1));
universe.AddSeedCellAt(Coords.Create(-2, 6));
universe.AddSeedCellAt(Coords.Create(-3, 6));
universe.AddSeedCellAt(Coords.Create(-4, 6));
universe.AddSeedCellAt(Coords.Create(-1, 2));
universe.AddSeedCellAt(Coords.Create(-1, 3));
universe.AddSeedCellAt(Coords.Create(-1, 4));
universe.AddSeedCellAt(Coords.Create(-6, 2));
universe.AddSeedCellAt(Coords.Create(-6, 3));
universe.AddSeedCellAt(Coords.Create(-6, 4));
universe.AddSeedCellAt(Coords.Create(2, -1));
universe.AddSeedCellAt(Coords.Create(3, -1));
universe.AddSeedCellAt(Coords.Create(4, -1));
universe.AddSeedCellAt(Coords.Create(2, -6));
universe.AddSeedCellAt(Coords.Create(3, -6));
universe.AddSeedCellAt(Coords.Create(4, -6));
universe.AddSeedCellAt(Coords.Create(1, -2));
universe.AddSeedCellAt(Coords.Create(1, -3));
universe.AddSeedCellAt(Coords.Create(1, -4));
universe.AddSeedCellAt(Coords.Create(6, -2));
universe.AddSeedCellAt(Coords.Create(6, -3));
universe.AddSeedCellAt(Coords.Create(6, -4));
universe.AddSeedCellAt(Coords.Create(-2, -1));
universe.AddSeedCellAt(Coords.Create(-3, -1));
universe.AddSeedCellAt(Coords.Create(-4, -1));
universe.AddSeedCellAt(Coords.Create(-2, -6));
universe.AddSeedCellAt(Coords.Create(-3, -6));
universe.AddSeedCellAt(Coords.Create(-4, -6));
universe.AddSeedCellAt(Coords.Create(-1, -2));
universe.AddSeedCellAt(Coords.Create(-1, -3));
universe.AddSeedCellAt(Coords.Create(-1, -4));
universe.AddSeedCellAt(Coords.Create(-6, -2));
universe.AddSeedCellAt(Coords.Create(-6, -3));
universe.AddSeedCellAt(Coords.Create(-6, -4));
}
private static void SeedWithLightWeightSpaceShip(Universe universe)
{
// http://en.wikipedia.org/wiki/File:Game_of_life_animated_LWSS.gif
// XX
// XX XX
// XXXX
// XX
universe.AddSeedCellAt(Coords.Create(-7, 3));
universe.AddSeedCellAt(Coords.Create(-6, 3));
universe.AddSeedCellAt(Coords.Create(-9, 2));
universe.AddSeedCellAt(Coords.Create(-8, 2));
universe.AddSeedCellAt(Coords.Create(-6, 2));
universe.AddSeedCellAt(Coords.Create(-5, 2));
universe.AddSeedCellAt(Coords.Create(-9, 1));
universe.AddSeedCellAt(Coords.Create(-8, 1));
universe.AddSeedCellAt(Coords.Create(-7, 1));
universe.AddSeedCellAt(Coords.Create(-6, 1));
universe.AddSeedCellAt(Coords.Create(-8, 0));
universe.AddSeedCellAt(Coords.Create(-7, 0));
}
private static bool DrawBoundedUniverse(Universe universe)
{
universe.IterateCellsThatHaveComeAlive(DrawCell);
universe.IterateCellsThatHaveDied(EraseCell);
return SomeLiveCellsAreWithinBounds(universe);
}
private static void Main(string[] args)
{
var seedChoice = DefaultSeedChoice;
var tickSleepInterval = DefaultTickSleepInterval;
if (args.Length >= 1)
{
if (!int.TryParse(args[0], out seedChoice))
{
seedChoice = DefaultSeedChoice;
}
}
if (args.Length == 2)
{
if (!int.TryParse(args[1], out tickSleepInterval))
{
tickSleepInterval = DefaultTickSleepInterval;
}
}
var universe = new Universe();
SeedPatterns.SeedTheUniverse(universe, seedChoice);
InitialiseConsole();
ConsoleCtrlHandler.RunUntilCtrlC(() => RunLoop(universe, tickSleepInterval));
RestoreConsole();
}
private void AssertThatGridContainsExpectedLiveCellsAfterTick(Universe universe, Coords[] setOfExpectedCoords)
{
universe.Tick();
var coordsOfLiveCells = new List<Coords>();
universe.IterateLiveCells((coords, cellState) => coordsOfLiveCells.Add(coords));
Assert.That(setOfExpectedCoords, Is.Unique);
Assert.That(coordsOfLiveCells, Is.Unique);
Assert.That(coordsOfLiveCells.Count(), Is.EqualTo(setOfExpectedCoords.Count()), "Found the wrong number of live cells");
foreach (var expectedCoords in setOfExpectedCoords)
{
var match = coordsOfLiveCells.FirstOrDefault(coords => coords.Equals(expectedCoords));
var message = string.Format("Expected to find a live cell at ({0}, {1})", expectedCoords.X, expectedCoords.Y);
Assert.That(match, Is.Not.Null, message);
}
}