public void Process_NoNeighbours_ReturnsMinPositionAndZeroMark()
{
var startingPosition = new Position(0, 0);
int[,] result = new int[1, 1];
var findHighestMark = new FindHighestMarkNeighbourProcessor();
var parameters = new FloodParameters(startingPosition.X, startingPosition.Y)
{
NeighbourProcessor = findHighestMark.Process
};
new FloodSpiller().SpillFlood(parameters, result);
findHighestMark.PositionWithHighestMark.Should().Be(Position.MinValue);
findHighestMark.HighestMark.Should().Be(0);
}
public void Process_FloodIsSpilledAround_ReturnsLastProcessedNeighbourWithMarkHigherThanOthers()
{
var startingPosition = new Position(1, 1);
int[,] result = new int[4, 4];
Predicate <int, int> qualifier = (x, y) => y != 3 || x == 0;
var findHighestMark = new FindHighestMarkNeighbourProcessor();
var parameters = new FloodParameters(startingPosition.X, startingPosition.Y)
{
Qualifier = qualifier,
NeighbourProcessor = findHighestMark.Process
};
new FloodSpiller().SpillFlood(parameters, result);
var expectedPosition = new Position(0, 3);
int expectedHighestMark = 2;
findHighestMark.PositionWithHighestMark.Should().Be(expectedPosition);
findHighestMark.HighestMark.Should().Be(expectedHighestMark);
}
public IFloodArea FetchWalkableFlood(Position center, int floodRange)
{
// performance: maybe we should keep a few last calculated results for center-floodRange pairs
if (_cachedFloodArea == null)
{
_cachedFloodArea = new FloodArea(center, floodRange);
}
int expectedMatrixSize = floodRange * 2 + 1;
if (_cachedFloodArea.ArraySize < expectedMatrixSize)
{
_cachedFloodArea.IncreaseMatrix(expectedMatrixSize);
}
if (_cachedFloodArea.Center != center)
{
_cachedFloodArea.Center = center;
int boundsSize = floodRange * 2;
_cachedFloodArea.Bounds = new Bounds(center.x - floodRange, center.y - floodRange, boundsSize, boundsSize);
}
var findHighestMark = new FindHighestMarkNeighbourProcessor();
var parameters = new FloodParameters(center.x, center.y)
{
Qualifier = (x, y) => _grid.IsWalkable(new Position(x, y)),
BoundsRestriction = BoundsUtilities.ToFloodBounds(_cachedFloodArea.Bounds),
NeighbourProcessor = findHighestMark.Process
};
Position furthestPosition = center;
_floodSpiller.SpillFlood(parameters, _cachedFloodArea.ValueMatrix);
_cachedFloodArea.FurthestPosition = furthestPosition;
return(_cachedFloodArea);
}
