public void TestGetPoints()
{
var hex = new HexEdge(0, 0, 1, 0);
var points = hex.GetPoints();
Assert.AreEqual(2, points.Count, "A hex edge must have 2 points.");
var msg = "Hex edge is missing a point.";
Assert.IsTrue(points.Contains(new HexPoint(0, 0, 1, 0, 1, 1)), msg);
Assert.IsTrue(points.Contains(new HexPoint(0, 0, 1, 0, 0, -1)), msg);
}
public void TestGetEdges()
{
var hex = new HexEdge(0, 0, 1, 0);
var edges = hex.GetHexagons();
Assert.AreEqual(2, edges.Count, "A hex edge must have 2 hexagons.");
string msg = "Hex edge is missing a hexagon.";
Assert.IsTrue(edges.Contains(new Hexagon(0, 0)), msg);
Assert.IsTrue(edges.Contains(new Hexagon(1, 0)), msg);
}
public void TestGetNeighborEdges()
{
var hex = new HexEdge(0, 0, 1, 0);
var neighbors = hex.GetNeighborEdges();
Assert.AreEqual(4, neighbors.Count, "A hex edge must have 4 neighbors.");
var msg = "Hex edge is missing a neighbor.";
Assert.IsTrue(neighbors.Contains(new HexEdge(0, 0, 0, -1)), msg);
Assert.IsTrue(neighbors.Contains(new HexEdge(1, 0, 0, -1)), msg);
Assert.IsTrue(neighbors.Contains(new HexEdge(0, 0, 1, 1)), msg);
Assert.IsTrue(neighbors.Contains(new HexEdge(1, 0, 1, 1)), msg);
}
public void TestSerialize()
{
var edges = new HexEdge[]
{
new HexEdge(0, 0, 1, 0),
new HexEdge(-2, -2, -1, -1),
new HexEdge(int.MaxValue, int.MaxValue, int.MaxValue, int.MaxValue - 1),
new HexEdge(int.MinValue, int.MinValue, int.MinValue, int.MinValue + 1),
};
foreach (var edge in edges)
{
var str = edge.ToString();
var actual = new HexEdge();
actual.FromString(str);
Assert.AreEqual(edge, actual, "The FromString method must produce the exact object that called the ToString method.");
}
}
private PointF[] HexEdgeToAbsolutePoints(HexEdge hexEdge)
{
var h1 = HexagonToAbsolutePoints(hexEdge.Hex1);
var h2 = HexagonToAbsolutePoints(hexEdge.Hex2);
var linePoints = h1.Intersect(h2).ToArray();
if (linePoints.Length == 2)
return linePoints;
return null;
}
private void DrawRoad(Graphics gfx, HexEdge edge, Road road)
{
var linePoints = HexEdgeToAbsolutePoints(edge);
if (linePoints != null)
{
Pen p1 = new Pen(Color.Black, 5f);
Pen p2 = new Pen(PlayerToColor(road.Player), 4f);
gfx.DrawLine(p1, linePoints[0], linePoints[1]);
gfx.DrawLine(p2, linePoints[0], linePoints[1]);
p1.Dispose();
p2.Dispose();
}
}
private void DrawPort(Graphics gfx, HexEdge edge, Port port)
{
var linePoints = HexEdgeToAbsolutePoints(edge);
if (linePoints != null)
{
Color c = port.Resource == ResourceTypes.None ? Color.Black : ResourceColorMap[port.Resource];
Brush hb = new HatchBrush(HatchStyle.Wave, c, BoardColors.Water);
Pen p = new Pen(c, 2f);
Pen bp = new Pen(Color.Black, 1f);
var box = linePoints.GetBoundingBox();
gfx.DrawEllipse(bp, box.OffsetSize(2, 2));
gfx.DrawEllipse(p, box);
gfx.FillEllipse(hb, box);
bp.Dispose();
hb.Dispose();
p.Dispose();
}
}
/// <summary>
/// Indicates if this edge is touching another edge.
/// </summary>
public bool IsTouching(HexEdge edge)
{
return GetNeighborEdges().Contains(edge);
}
/// <summary>
/// Places a road for the given player at the given location.
/// If it's the initial placement phase of the game, the road is free.
/// Otherwise, resources will be removed from the player.
/// </summary>
public ActionResult PlayerPlaceRoad(int playerId, HexEdge location)
{
var validation = ValidatePlayerAction(PlayerTurnState.PlacingRoad, playerId);
if (validation.Failed) return validation;
var pr = GetPlayerFromId(playerId);
if (pr.Failed) return pr;
var player = pr.Data;
bool startOfGame = (_gameState == GameStates.InitialPlacement);
// Make sure the player doesn't place too many roads in the intial placement phase
if (startOfGame)
{
var buildingCount = _gameBoard.GetBuildingCountForPlayer(playerId);
var roadCount = _gameBoard.GetRoadCountForPlayer(playerId);
var maxRoads = buildingCount;
if (roadCount >= maxRoads)
return ActionResult.CreateFailed("Cannot place more than 1 road per settlement during the initial placement phase.");
}
var placementValidation = _gameBoard.ValidateRoadPlacement(playerId, location, startOfGame);
if (placementValidation.Failed) return placementValidation;
var purchaseResult = player.Purchase(PurchasableItems.Road, startOfGame);
if (purchaseResult.Failed) return purchaseResult;
// We'll assume this succeeds because we already validated it.
var placement = _gameBoard.PlaceRoad(player.Id, location, startOfGame);
System.Diagnostics.Debug.Assert(placement.Succeeded);
// When we place a road, do a check to see if we deserve the longest road.
CheckForLongestRoad(playerId);
// Update game and player states.
if (_gameState == GameStates.InitialPlacement)
{
var buildingCount = _gameBoard.GetBuildingCountForPlayer(playerId);
if (LastPlayerIsActive && buildingCount == 1)
{
// The "last" player gets to place twice.
_playerTurnState = PlayerTurnState.PlacingBuilding;
}
else
{
// Go to the next players turn.
AdvanceToNextPlayerTurn();
}
}
else if (_gameState == GameStates.GameInProgress)
{
_playerTurnState = PlayerTurnState.TakeAction;
}
return ActionResult.CreateSuccess();
}
private bool IsPlayerBuildingHere(int player, HexEdge edge)
{
foreach (var point in edge.GetPoints())
{
if (IsPlayerBuildingHere(player, point))
return true;
}
return false;
}
private bool IsEdgeInBoard(HexEdge edge)
{
return _validBoardEdges.Contains(edge);
}
private IEnumerable<HexEdge> GetRoadPermutations(int player, HexEdge road, IEnumerable<HexEdge> allPlayerRoads, IEnumerable<HexEdge> excludeRoads)
{
return GetRoadPermutations(player, road, allPlayerRoads)
.Where(e => !excludeRoads.Contains(e));
}
private IEnumerable<HexEdge> GetRoadPermutations(int player, HexEdge road, IEnumerable<HexEdge> allPlayerRoads)
{
return road.GetNeighborEdges()
.Where(e => allPlayerRoads.Contains(e) &&
!IsEnemyPlayerBuildingHere(player, road.GetNeighborPoint(e))); // An enemy building can cut off a road.
}
/// <summary>
/// Returns a success result if this is a valid placement for a road.
/// </summary>
public ActionResult ValidateRoadPlacement(int player, HexEdge edge, bool startOfGame)
{
if (!IsEdgeInBoard(edge))
{
return new ActionResult(false, string.Format("The road location {0} is out of bounds.", edge));
}
// Do not allow removing a road.
if (_roads.ContainsKey(edge))
{
return new ActionResult(false, string.Format("The road location {0} is already used.", edge));
}
if (startOfGame)
{
// Make sure this is touching a settlement owned by this player. It's the start of the game.
if (!IsPlayerBuildingHere(player, edge))
{
return new ActionResult(false, String.Format("The road location {0} is not near a settlement.", edge));
}
}
else
{
// We must be near a settlement, city, or another road.
if (!IsPlayerBuildingHere(player, edge))
{
bool isTouchingRoad = false;
foreach (var surroundingRoad in edge.GetNeighborEdges())
{
if (IsPlayerRoadHere(player, surroundingRoad))
{
isTouchingRoad = true;
break;
}
}
if (!isTouchingRoad)
{
return new ActionResult(false, string.Format("The road location {0} is not near a city, settlement, or road.", edge));
}
}
}
return ActionResult.CreateSuccess();
}
/// <summary>
/// Places a new road onto the board.
/// </summary>
public ActionResult PlaceRoad(int player, HexEdge edge, bool startOfGame)
{
var validationResult = ValidateRoadPlacement(player, edge, startOfGame);
if (validationResult.Failed) return validationResult;
_roads[edge] = new Road(player);
return ActionResult.CreateSuccess();
}
/// <summary>
/// Indicates if the hexagon contains the given edge.
/// </summary>
public bool ContainsEdge(HexEdge edge)
{
return GetEdges().Contains(edge);
}
private bool IsPlayerRoadHere(int player, HexEdge edge)
{
if (_roads.ContainsKey(edge))
{
return (_roads[edge].Player == player);
}
return false;
}
public SearchRoad(HexEdge edge, SearchRoad parent = null)
{
Edge = edge;
Parent = parent;
}
/// <summary>
/// Places a road for the given player at the given location after the RoadBuilding card has been played.
/// Can only be called by the active player.
/// </summary>
public ActionResult PlayerPlaceRoadForRoadBuilding(int playerId, HexEdge location)
{
var validation = ValidatePlayerAction(PlayerTurnState.RoadBuildingSelectingRoads, playerId);
if (validation.Failed) return validation;
var pr = GetPlayerFromId(playerId);
if (pr.Failed) return pr;
var player = pr.Data;
// Make sure the player doesn't place too many roads
if (_roadBuildingRoadsRemaining <= 0)
return ActionResult.CreateFailed("Cannot place more than 2 roads with the RoadBuilding card.");
var placementValidation = _gameBoard.ValidateRoadPlacement(playerId, location, false);
if (placementValidation.Failed) return placementValidation;
var purchaseResult = player.Purchase(PurchasableItems.Road, true);
if (purchaseResult.Failed)
{
// If this failed, it means that the player has no more roads available. This turn state has to end.
_roadBuildingRoadsRemaining = 0;
_playerTurnState = PlayerTurnState.TakeAction;
return purchaseResult;
}
var rr = _gameBoard.PlaceRoad(player.Id, location, false);
if (rr.Failed) return rr;
// When we place a road, do a check to see if we deserve the longest road.
CheckForLongestRoad(playerId);
_roadBuildingRoadsRemaining--;
if (_roadBuildingRoadsRemaining <= 0)
{
_playerTurnState = PlayerTurnState.TakeAction;
}
return ActionResult.CreateSuccess();
}
/// <summary>
/// Gets the point which connects two edges.
/// </summary>
public HexPoint GetNeighborPoint(HexEdge neighborEdge)
{
var point = this.GetPoints().Intersect(neighborEdge.GetPoints()).ToList();
if (point.Count != 1)
throw new ArgumentException("Invalid neighbor edge.");
return point[0];
}