protected void UpdateState()
{
current = current.Flip(currentMove);
int first = current.FirstCoinAffectedIndex(currentMove);
int n = current.NumCoinsAffected(currentMove);
Array.Reverse(coins, first, n);
}
public void TestStateBasics()
{
short[] simple = new short[] { 0, 1, 2, 3 };
PuzzleState ps = new PuzzleState(simple, 4);
Assert.AreEqual(ps.Count, 4, "State has 4 pieces");
Assert.AreEqual(ps.numColors, 4, "State has 4 colors");
Assert.IsFalse(ps.sided, "state is sided");
for (int i = 0; i < ps.Count; i++)
{
Assert.False(ps.Rotated(i), "piece not rotated");
Assert.AreEqual(ps.ColorIndex(i), simple[i], "color index matches initial config");
}
var ps1 = ps.Flip(new Move(0, Side.Left));
Assert.AreEqual(ps, ps1, "Flipping 1L on simple does not change state");
var ps2 = ps.Flip(new Move(0, Side.Right)).Flip(new Move(0, Side.Right));
Assert.AreEqual(ps, ps2, "Flipping 1R,1R returns same state as original");
}
public void TestAdd()
{
PuzzleState st = new PuzzleState(new short[] { 0, 1, 2, 3 }, 4, true);
var tree = new CCTrie(st);
// flip 0R
var mv1 = new Move(0, Side.Right);
var st1 = st.Flip(mv1);
tree.Add(st1, mv1);
Assert.IsTrue(tree.Contains(st1), "Tree contains state just added");
Move move = new Move();
tree.GetExtra(st1, out move);
Assert.AreEqual(mv1, move, "Stored state contains right move");
var moves = tree.ReCreatePath(st1, st);
Assert.NotNull(moves, "Solution is not null");
Assert.AreEqual(1, moves.Count, "Solution has right length");
Assert.AreEqual(mv1, moves[0], "Solution 1st move is right");
var mv2 = new Move(2, Side.Left);
var st2 = st1.Flip(mv2);
tree.Add(st2, mv2);
Assert.IsTrue(tree.Contains(st2), "Tree contains state just added");
Assert.IsTrue(tree.Contains(st1), "Tree still contains the other state added");
tree.GetExtra(st2, out move);
Assert.AreEqual(mv2, move, "Stored state contains right move");
moves = tree.ReCreatePath(st2, st);
Assert.NotNull(moves, "Solution is not null");
Assert.AreEqual(2, moves.Count, "Solution has right length");
Assert.AreEqual(mv2, moves[0], "Solution 1st move is right");
Assert.AreEqual(mv1, moves[1], "Solution 2nd move is right");
}
