public void Debug()
{
var stateInput = "...1...|..344..|.44433.|2444443|.41421.|..113..|...0...|5 2|0 3|2 1|3 5|";
var state = StateReader.Read(stateInput);
var action = new AlphaBetaAi(evaluator, 1).GetAction(state, 100);
Assert.That(action.ToString(), Is.EqualTo("MOVE&BUILD 0 SE SW"));
}
public void AssignValueToLastSearchTreeSizeProperty_DuringSearch(int depth, int expectedSize)
{
var state = StateReader.Read("002|022|200|0 0|1 0|-1 -1|-1 -1|");
var ai = new AlphaBetaAi(evaluator, depth);
ai.GetAction(state, 1000);
ai.LastSearchTreeSize.Should().Be(expectedSize);
}
public void AssignValueToLastDepthFullySearchedProperty_DuringSearch(int depth)
{
var state = StateReader.Read("00000|00000|00000|00000|00000|1 1|2 3|-1 -1|-1 -1|");
var ai = new AlphaBetaAi(evaluator, depth);
ai.GetAction(state, 1000);
ai.LastDepthFullySearched.Should().Be(depth);
}
public void MeasureSearchTreeSize()
{
var stateInput = "...2...|..303..|.13033.|0010031|.01412.|..121..|...1...|3 5|5 2|2 2|5 4|";
var state = StateReader.Read(stateInput);
new AlphaBetaAi(evaluator).GetAction(state, 1); // heat up
var ai = new AlphaBetaAi(evaluator, 3);
ai.GetAction(state, 3000); // measure
Console.WriteLine($"SearchTreeSize: {ai.LastSearchTreeSize}");
}
public void BeEquivalentToGreedy_WhenSearchDepthIs1(string input)
{
var state = StateReader.Read(input);
var initialStateDump = state.ToString();
var greedyAction = new GreedyAi(evaluator).GetAction(state, 100);
var abAction = new AlphaBetaAi(evaluator, 1).GetAction(state, 100);
Console.WriteLine(state.ToString());
Console.WriteLine($"[{abAction}]");
state.ToString().Should().Be(initialStateDump, "ai.GetAction should not change state");
abAction.ToString().Should().Be(greedyAction.ToString(), "ab-ai with depth=1 should be exactly gready ai");
}
public void MeasurePerformance()
{
var state = new StateReader("...0...|..000..|.00000.|0000000|.00010.|..000..|...1...|3 5|5 4|3 4|1 1|")
.ReadState(new InitializationData(7, 2));
var alphabetaAi = new AlphaBetaAi(evaluator)
{
LoggingEnabled = false
};
var totalNodesProcessed = 0;
var totalDepths = 0;
var count = 50;
for (var turn = 0; turn < count; turn++)
{
var action = alphabetaAi.GetAction(state, turn == 0 ? 100 : 50);
action.ApplyTo(state);
state.ChangeCurrentPlayer();
totalNodesProcessed += alphabetaAi.LastSearchTreeSize;
totalDepths += alphabetaAi.LastDepthFullySearched;
}
Console.WriteLine($"Total Nodes Searched: {totalNodesProcessed}");
Console.WriteLine($"Average search depth: {totalDepths / (double)count}");
}