public void TestMoveItemAbove()
{
var interactionService = ServiceContainer.Resolve<IGameInteractionService> ();
var gameState = new GameState ();
interactionService.InitGameState (gameState);
var emptyLoc = gameState.GameField.GetUnusedItemLocation ();
var emptyItem = gameState.GameField.GetItem (emptyLoc.Row, emptyLoc.Column);
int centerRow = gameState.GameField.Rows / 2;
int centerCol = gameState.GameField.Columns / 2;
// Move the empty item to the center to have identical test conditions.
var oldItem = gameState.GameField.SetItem (centerRow, centerCol, emptyItem);
gameState.GameField.SetItem (emptyLoc.Row, emptyLoc.Column, oldItem);
// Update empty location.
emptyLoc = gameState.GameField.GetUnusedItemLocation ();
emptyItem = gameState.GameField.GetItem (emptyLoc.Row, emptyLoc.Column);
var itemAbove = gameState.GameField.GetItem (emptyLoc.Row - 1, emptyLoc.Column);
var movedPyramid = interactionService.Move (gameState, GameMoveType.MoveItemAbove);
// Ensure that the returned item really is the one from above.
Assert.That (movedPyramid.Id == itemAbove.Id);
}
public override GameMoveType GetNextMove(GameState gameState, IGameInteractionService interactionService)
{
var move = base.GetNextMove (gameState, interactionService);
// Sleep to allow better visualization.
// TODO: Sleep? Or make async?
Thread.Sleep (1000);
return move;
}
/// <summary>
/// Creates the game.
/// </summary>
/// <returns>The game.</returns>
/// <param name="platformServices">Platform services.</param>
/// <param name="loggingService">Logging service. Can be NULL.</param>
/// <param name="visualizationService">Instance of a service that allows the game state to be visualized.</param>
/// <param name="continuePreviousGame">If set to <c>true</c> continue previous game.</param>
/// <param name="progress">Progress.</param>
public static async Task<PyramidGame> CreateGame(IPlatformServices platformServices, ILoggingService loggingService, IGameVisualizationService visualizationService, IPlayer localPlayer, IPlayer opponentPlayer, bool continuePreviousGame, IProgress<GameAction> progress = null)
{
if(platformServices == null)
{
throw new ArgumentNullException ("platformServices", "Platform services are required to perform platform specific tasks.");
}
if(progress != null)
{
progress.Report (GameAction.RegisteringServices);
}
// Register all required services.
GameServiceRegistrar.RegisterServices (platformServices, loggingService);
// Create a game state.
GameState gameState = null;
// Let the interaction service initialize the game state.
var gameInteractionService = ServiceContainer.Resolve<IGameInteractionService>();
if(continuePreviousGame)
{
var persistenceService = ServiceContainer.Resolve<IPersistenceService> ();
if(progress != null)
{
progress.Report (GameAction.LoadingGameState);
}
gameState = await persistenceService.LoadGameStateAsync ();
}
// Init a new game?
if(gameState == null)
{
gameState = new GameState ();
gameInteractionService.InitGameState (gameState);
}
// Create an instance of the game itself.
var game = new PyramidGame ()
{
GameState = gameState,
// This can be NULL. Then nothing will be displayed.
VisualizationService = visualizationService,
LocalPlayer = localPlayer,
OpponentPlayer = opponentPlayer
};
return game;
}
public GameMoveType GetNextMove(GameState gameState, IGameInteractionService interactionService)
{
while(true)
{
var move = GameMoveType.None;
var key = Console.ReadKey ().Key;
switch(key)
{
// Quit the program if ESC is pressed.
case ConsoleKey.Escape:
if(this.GameQuitRequested != null)
{
this.GameQuitRequested ();
}
return GameMoveType.None;
case ConsoleKey.UpArrow:
// Arrow up = move the item below the empty space UP.
move = GameMoveType.MoveItemBelow;
break;
case ConsoleKey.DownArrow:
// Arrow down = move the item above the empty space DOWN.
move = GameMoveType.MoveItemAbove;
break;
case ConsoleKey.LeftArrow:
// Arrow left = move the item right of the empty space LEFT.
move = GameMoveType.MoveItemRight;
break;
case ConsoleKey.RightArrow:
// Arrow right = move the item left of the empty space RIGHT.
move = GameMoveType.MoveItemLeft;
break;
default:
Console.Beep ();
break;
}
if(interactionService.CanMove(gameState.GameField, move))
{
return move;
}
}
}
public async Task<bool> PersistGameStateAsync (GameState gameState)
{
try
{
using(var stream = this.platformServices.GetGameStatePersistenceStream(true))
using(var writer = new StreamWriter(stream))
{
// Save score.
await writer.WriteLineAsync (string.Format("localplayerscore:{0}", gameState.LocalPlayerScore));
await writer.WriteLineAsync (string.Format("opponentplayerscore:{0}", gameState.OpponentPlayerScore));
// Save current player.
await writer.WriteLineAsync (string.Format("currentplayer:{0}", gameState.CurrentPlayer.ToString()));
// Save card stack.
var cardsString = new StringBuilder();
foreach(TreasureType card in gameState.Cards)
{
cardsString.Append(card.ToString()).Append("|");
}
await writer.WriteLineAsync (string.Format("cards:{0}", cardsString.ToString()));
// Save game field items.
for(int row = 0; row < gameState.GameField.Rows; row++)
{
var fieldString = new StringBuilder();
for(int col = 0; col < gameState.GameField.Columns; col++)
{
var item = gameState.GameField.GetItem (row, col);
fieldString.AppendFormat ("{0},{1},{2}|", item.Id, item.Pyramid.ToString (), item.Treasure.ToString ());
}
await writer.WriteLineAsync (string.Format("field:{0}|{1}", row, fieldString.ToString()));
}
}
}
catch(Exception ex)
{
return false;
}
return true;
}
public void TestInitGameState()
{
Exception error = null;
var interactionService = ServiceContainer.Resolve<IGameInteractionService> ();
var gameState = new GameState ();
// Just check that the init routine does not crash.
// The correct content of the game state can only be tested by visualizing it.
try
{
interactionService.InitGameState (gameState);
}
catch(Exception ex)
{
error = ex;
}
Assert.IsNull (error, "Error: " + error);
// Check that the card deck is properly filled.
Assert.AreEqual (gameState.Cards.Count, 36, "Amount of cards incorrect.");
}
public void TestCanMove()
{
var interactionService = ServiceContainer.Resolve<IGameInteractionService> ();
var gameState = new GameState ();
interactionService.InitGameState (gameState);
var emptyLoc = gameState.GameField.GetUnusedItemLocation ();
var emptyItem = gameState.GameField.GetItem (emptyLoc.Row, emptyLoc.Column);
int centerRow = gameState.GameField.Rows / 2;
int centerCol = gameState.GameField.Rows / 2;
// Move the empty item to the center to have identical test conditions.
var oldItem = gameState.GameField.SetItem (centerRow, centerCol, emptyItem);
gameState.GameField.SetItem (emptyLoc.Row, emptyLoc.Column, oldItem);
Assert.IsTrue (interactionService.CanMove (gameState.GameField, GameMoveType.MoveItemAbove), "Cannot move item above down");
Assert.IsTrue (interactionService.CanMove (gameState.GameField, GameMoveType.MoveItemBelow), "Cannot move item below up");
Assert.IsTrue (interactionService.CanMove (gameState.GameField, GameMoveType.MoveItemLeft), "Cannot move item left right");
Assert.IsTrue (interactionService.CanMove (gameState.GameField, GameMoveType.MoveItemRight), "Cannot move item right left");
}
public async Task<GameState> LoadGameStateAsync ()
{
var gameState = new GameState ();
try
{
using (var stream = this.platformServices.GetGameStatePersistenceStream(false))
using (var reader = new StreamReader(stream))
{
while(!reader.EndOfStream)
{
var data = GetLineInfo (await reader.ReadLineAsync ());
PopulateGameState (gameState, data);
}
}
}
catch(Exception ex)
{
return null;
}
return gameState;
}
/// <summary>
/// Gets a random location on the board and avoids treasures.
/// </summary>
/// <returns>The random location avoiding treasures.</returns>
/// <param name="gameState">Game state.</param>
protected virtual GridLocation GetRandomLocationAvoidingTreasures(GameState gameState)
{
var platformServices = ServiceContainer.Resolve<IPlatformServices> ();
var loggingService = ServiceContainer.Resolve<ILoggingService> ();
GridLocation location;
bool continueRandomization = false;
// Loop until a (presumably) empty location was found.
do
{
// Get a location that has not been visited recently.
bool isRememberedLocation = false;
do
{
location = new GridLocation (platformServices.GetRandomNumber (0, gameState.GameField.Rows), platformServices.GetRandomNumber (0, gameState.GameField.Columns));
isRememberedLocation = this.lastVisitedLocations.Contains (location);
#if EXTENSIVE_LOGGING
loggingService.Log("Randomized location '{0}' was picked previously? {1}.", location, isRememberedLocation);
#endif
}
while(isRememberedLocation);
// Remember the location to prevent visiting it again immediately.
this.lastVisitedLocations.Enqueue (location);
// Now check if the location has a treasure. If yes, we don't want to go there unless it is the current active treasure.
var treasureMemory = this.HasLocationPresumablyTreasure(location);
// We want to pick a location that we don't know about.
if(treasureMemory == LocationMemory.DontKnow)
{
// Let's head there if the AI does not know about the location.
continueRandomization = false;
#if EXTENSIVE_LOGGING
loggingService.Log("Randomized location. AI does not know what's at '{0}'. Active treasure: {1}.", location, gameState.GetActiveCard());
#endif
}
else if(treasureMemory == LocationMemory.HasNothing)
{
// If the AI knows that there is nothing at the location, it won't go there.
continueRandomization = true;
#if EXTENSIVE_LOGGING
loggingService.Log("Randomized location. AI knows that there is nothing at '{0}'. Active treasure: {1}.", location, gameState.GetActiveCard());
#endif
}
else if(treasureMemory == LocationMemory.HasTreasure)
{
// If there is a treasure, the AI will avoid it, untless it is the current searched treasure.
var treasureItem = gameState.GameField.GetItem(location).Treasure;
if(treasureItem == gameState.GetActiveCard())
{
continueRandomization = false;
}
else
{
// Keep searching a new random location.
continueRandomization = true;
}
#if EXTENSIVE_LOGGING
loggingService.Log("Randomized location. AI knows there is a treasure '{0}'. Active treasure: {1}.", location, gameState.GetActiveCard());
#endif
}
}
while(continueRandomization);
return location;
}
public virtual GameMoveType GetNextMove(GameState gameState, IGameInteractionService interactionService)
{
var loggingService = ServiceContainer.Resolve<ILoggingService> ();
var emptyLocation = gameState.GameField.GetUnusedItemLocation ();
// Prepare a path to the target treasure if it hasn't happened yet. The AI decides first what path it will take, then it will follow it until
// it fails or until it reaches the treasure. The current path is reset in UpdatePlayer() because this means that it's the other player's turn.
if (this.currentPath == null || this.currentPath.Count <= 0)
{
#if EXTENSIVE_LOGGING
loggingService.Log ("AI calculates a new path.");
#endif
// Populate the path finding algorithm and start at the unused item location.
var populatedGrid = AIHelpers.PreparePathGrid (gameState.GameField, emptyLocation, gameState.GetActiveCard());
// Get the location of the current active card. This may return NULL if the AI cannot remember the location.
GridLocation currentTreasureLocation = this.GetPresumedLocationOfTreasure(gameState.GetActiveCard());
// The AI has no clue where the active treasure is. It will pick a random location to move to.
if (currentTreasureLocation == null)
{
currentTreasureLocation = this.GetRandomLocationAvoidingTreasures (gameState);
#if EXTENSIVE_LOGGING
loggingService.Log ("AI has no clue where '{0}' is located. Will move to random location {1}.", gameState.GetActiveCard(), currentTreasureLocation);
#endif
}
// Log how AI calculates the distances.
#if EXTENSIVE_LOGGING
loggingService.Log ("AI sees the grid with these distances, starting at {0} to reach (presumed!) {1} at {2}:", emptyLocation, gameState.GetActiveCard(), currentTreasureLocation);
for (int row = 0; row < populatedGrid.Rows; row++)
{
string s = string.Empty;
for (int col = 0; col < populatedGrid.Columns; col++)
{
s += populatedGrid.GetItem (row, col).ToString ("000") + " |";
}
loggingService.Log (s);
}
#endif
// Find the path from the current unused location to the treasure, avoiding all other treasures if possible.
var pathList = AIHelpers.GetPathToLocation (gameState.GameField, populatedGrid, emptyLocation, currentTreasureLocation, gameState.GetActiveCard());
// We need to reverse it to get the corret order when copying onto a stack.
pathList.Reverse ();
// Copy the path onto a stack for better processing.
this.currentPath = new Stack<GridLocation>(pathList);
pathList = null;
// Log the path the AI will go.
#if EXTENSIVE_LOGGING
loggingService.Log ("AI's path to (presumed!) {0}:", gameState.GetActiveCard());
for (int row = 0; row < populatedGrid.Rows; row++)
{
string s = string.Empty;
for (int col = 0; col < populatedGrid.Columns; col++)
{
var isPath = (from pathItem in this.currentPath where pathItem.Row == row && pathItem.Column == col select pathItem).Any ();
if (isPath)
{
s += populatedGrid.GetItem (row, col).ToString ("000") + "X|";
} else
{
s += populatedGrid.GetItem (row, col).ToString ("000") + " |";
}
}
loggingService.Log (s);
}
#endif
// A correct path has to contain at least two locations: the start and the target.
if (this.currentPath.Count < 2)
{
// The AI failed and could not find a path from the unused location to the active treasure. Stupid AI. Should not happen and means there is a problem in the algorithm.
loggingService.Log ("AI path is invalid. Path length: [{0}]. Next move will be random.", this.currentPath.Count.ToString ());
// Return a random move.
var randomMove = AIHelpers.GetRandomMove (gameState.GameField, emptyLocation, gameState.GetActiveCard());
loggingService.Log ("AI moves randomly: {0}", randomMove);
// Bail out.
return randomMove;
}
else
{
// The found path is valid. Remove the first entry because this is the start location. No need to move, we're already there.
// TODO: Verify that if the next treaure is the one that is currently active, the AI will spot that it is already uncovered.
this.currentPath.Pop ();
}
}
// Here the current path has either just been populated or we're following a previously populated path.
// Get next location to move to.
var moveLocation = this.currentPath.Pop ();
// Remember that we visited that location. We want to avoid it for the next couple of moves.
this.lastVisitedLocations.Enqueue (moveLocation);
// Remember the treasure that has just been discoverd fully.
this.LearnAboutTreasure (gameState.GameField.GetItem(moveLocation).Treasure, moveLocation);
// Convert location to a move.
var move = AIHelpers.GetMoveToAdjacentLocation (emptyLocation, moveLocation);
loggingService.Log ("AI will move from [{0}] to [{1}], this is a move of type [{2}].", emptyLocation, moveLocation, move);
// The AI forgets a bit after each move.
this.ForgetTreasures ();
return move;
}
public void InitGameState(GameState gameState)
{
var platformServices = ServiceContainer.Resolve<IPlatformServices> ();
int id = 1;
var pyramidType = PyramidType.PyramidA;
// Distribute the treasures randomly on the board.
var randomizedTreasures = DefaultGameInteractionService.GetRandomizedTreasures ();
// Map from index of the treasure to the treasure.
var treasureIndexes = new Dictionary<int, TreasureType>();
int row = 0;
int col = 0;
foreach(var treasure in randomizedTreasures)
{
// Get a random location within the 2x2 square.
int randomRowAdd = platformServices.GetRandomNumber (0, 2);
int randomColAdd = platformServices.GetRandomNumber (0, 2);
// Get the index of the location.
int treasureIndex = (row + randomRowAdd) * gameState.GameField.Columns + col + randomColAdd;
// Remember the index and the treasure.
treasureIndexes.Add (treasureIndex, treasure);
// Treasures are hidden in 2x2 squares. Exactly one treasure per square. Move to next 2x2 square.
col += 2;
if(col >= gameState.GameField.Columns)
{
row += 2;
col = 0;
}
}
// Find a random spot for the initial empty item location. This may not be on top of a treasure.
int emptyItemLocationIndex;
do
{
emptyItemLocationIndex = platformServices.GetRandomNumber (0, gameState.GameField.Rows * gameState.GameField.Columns);
}
while(treasureIndexes.ContainsKey (emptyItemLocationIndex));
// Populate the game field.
int index = 0;
for(row = 0; row < gameState.GameField.Rows; row++)
{
for(col = 0; col < gameState.GameField.Columns; col++)
{
var item = new GameFieldItem ()
{
Id = id++,
Pyramid = pyramidType,
Treasure = TreasureType.None
};
// If we come across the initial empty location, remove the pyramid.
if(index == emptyItemLocationIndex)
{
item.Pyramid = PyramidType.None;
}
// If there's a treasure, hide it.
if(treasureIndexes.ContainsKey(index))
{
item.Treasure = treasureIndexes[index];
}
gameState.GameField.SetItem (row, col, item);
// Alternate pyramids to make the field look nicer.
pyramidType = pyramidType == PyramidType.PyramidA ? PyramidType.PyramidB : PyramidType.PyramidA;
index++;
}
}
// Shuffle the stack of cards to draw from. Each treasure is there three times.
// First 12 score 1 each, second 12 score 2 each, third 12 score 3 each.
var randomizedCards = DefaultGameInteractionService.GetRandomizedTreasures (3);
gameState.Cards = new Stack<TreasureType> (randomizedCards);
}
public override GameMoveType GetNextMove(GameState gameState, IGameInteractionService interactionService)
{
var move = base.GetNextMove (gameState, interactionService);
return move;
}
/// <summary>
/// Draws the game field.
/// </summary>
/// <param name="gameState">Game state.</param>
public void DrawGameField(GameState gameState)
{
int right = gameState.GameField.Columns * colScale + gameState.GameField.Columns;
// Show the current player's name.
this.Write (0, right + 5, ConsoleColor.Gray, "Current Player: {0}", gameState.CurrentPlayer.ToString ());
// Show the current card to be searched.
this.Write (2, right + 5, ConsoleColor.Gray, "Search treasure: {0}", gameState.GetActiveCard());
this.Write (3, right + 5, ConsoleColor.Gray, "Treasures left: {0}", gameState.Cards.Count);
// Show the scores.
this.Write (5, right + 5, ConsoleColor.Gray, "Local player score: {0}", gameState.LocalPlayerScore);
this.Write (6, right + 5, ConsoleColor.Gray, "Opponent player score: {0}", gameState.OpponentPlayerScore);
// Draw a grid.
for (int row = 0; row < gameState.GameField.Rows; row++)
{
for (int col = 0; col < gameState.GameField.Columns; col++)
{
this.DrawHorizLine (row, col);
this.DrawVertLine (row, col);
}
}
// Draw the bottom most horizontal line.
for (int col = 0; col < gameState.GameField.Columns; col++)
{
this.DrawHorizLine (gameState.GameField.Rows, col);
}
// Draw the right most vertical line./
for (int row = 0; row < gameState.GameField.Rows; row++)
{
this.DrawVertLine (row, gameState.GameField.Columns);
}
// Draw the bottom right corner of the game field.
screen.SetItem (gameState.GameField.Rows * rowScale + gameState.GameField.Rows, gameState.GameField.Columns * colScale + gameState.GameField.Columns, '+'.ToColorChar(gridColor));
// Draw representations of the game field content.
for (int row = 0; row < gameState.GameField.Rows; row++)
{
for (int col = 0; col < gameState.GameField.Columns; col++)
{
GameFieldItem item = gameState.GameField.GetItem (row, col);
ColorChar pyramidChar = new ColorChar();
switch(item.Pyramid)
{
case PyramidType.PyramidA:
pyramidChar = 'X'.ToColorChar (ConsoleColor.White, ConsoleColor.DarkRed);
break;
case PyramidType.PyramidB:
pyramidChar = 'X'.ToColorChar (ConsoleColor.White, ConsoleColor.Blue);
break;
case PyramidType.None:
pyramidChar = ' '.ToColorChar (ConsoleColor.Black);
break;
default:
throw new InvalidOperationException ("Unhandled pyramid type!");
}
for(int i = 0; i < rowScale; i++)
{
for(int j = 0; j < colScale; j++)
{
screen.SetItem (row * rowScale + row + 1 + i, col * colScale + col + 1 + j, pyramidChar);
}
}
// If there's a treasure, show the first few characters to ease debugging.
if (item.Treasure != TreasureType.None)
{
// By default show treasure if it is at the empty location.
if (this.ShowTreasureNames || pyramidChar.C == ' ')
{
var treasureString = item.Treasure.ToString ();
for (int j = 0; j < colScale; j++)
{
if (j < treasureString.Length)
{
screen.SetItem (row * rowScale + row + 1, col * colScale + col + 1 + j, treasureString [j].ToColorChar (ConsoleColor.Black, ConsoleColor.Yellow));
}
else
{
screen.SetItem (row * rowScale + row + 1, col * colScale + col + 1 + j, ' '.ToColorChar (ConsoleColor.Black, ConsoleColor.Yellow));
}
}
}
}
}
}
}
public void UpdateScene(GameState gameState)
{
// Draw the game board into the virtual screen.
this.DrawGameField (gameState);
// Copy the virtual screen content to the console.
Console.BackgroundColor = ConsoleColor.Black;
Console.Clear ();
for(int row = 0; row < screen.Rows; row++)
{
for(int col = 0; col < screen.Columns; col++)
{
var colorChar = screen.GetItem (row, col);
Console.ForegroundColor = colorChar.Color;
Console.BackgroundColor = colorChar.BackgroundColor;
Console.Write(colorChar.C);
}
Console.WriteLine ();
}
// Clear the virtual screen for the next loop.
for (int row = 0; row < screen.Rows; row++)
{
for (int col = 0; col < screen.Columns; col++)
{
screen.SetItem (row, col, '.'.ToColorChar(ConsoleColor.Black, ConsoleColor.Black));
}
}
}
private static void PopulateGameState(GameState gameState, Tuple<string, string> data)
{
switch(data.Item1)
{
case "localplayerscore":
gameState.LocalPlayerScore = XmlConvert.ToInt32 (data.Item2);
break;
case "opponentplayerscore":
gameState.OpponentPlayerScore = XmlConvert.ToInt32 (data.Item2);
break;
case "currentplayer":
gameState.CurrentPlayer = (PlayerType)Enum.Parse (typeof(PlayerType), data.Item2, true);
break;
case "cards":
var cardData = data.Item2.Split (new char[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
foreach(string cardName in cardData)
{
var card = (TreasureType)Enum.Parse (typeof(TreasureType), cardName, true);
gameState.Cards.Push (card);
}
break;
case "field":
var colData = data.Item2.Split (new char[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
// First number is the row index.
int rowIndex = XmlConvert.ToInt32 (colData [0]);
int colIndex = 0;
for (int i = 1; i < colData.Length; i++)
{
var itemInfo = colData[i].Split (new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
var item = new GameFieldItem ();
item.Id = XmlConvert.ToInt32 (itemInfo[0]);
item.Pyramid = (PyramidType)Enum.Parse (typeof(PyramidType), itemInfo [1], true);
item.Treasure = (TreasureType)Enum.Parse (typeof(TreasureType), itemInfo [2], true);
gameState.GameField.SetItem (rowIndex, colIndex, item);
colIndex++;
}
break;
}
}
public void SetUp()
{
Util.RegisterServices ();
this.gameState = new GameState ()
{
GameField = new GameFieldGrid(),
CurrentPlayer = PlayerType.Local,
Cards = new Stack<TreasureType>(),
LocalPlayerScore = 10,
OpponentPlayerScore = 20
};
// Push two cards for testing.
this.gameState.Cards.Push (TreasureType.Candle);
this.gameState.Cards.Push (TreasureType.Computer);
int id = 0;
var pyramid = PyramidType.None;
var treasure = TreasureType.None;
for(int row = 0; row < GameFieldGrid.ROWS; row++)
{
for(int col = 0; col < GameFieldGrid.COLUMNS; col++)
{
// Hide four treasures.
if(row == 2 && col == 2)
{
treasure = TreasureType.Candle;
}
else if(row == 3 && col == 3)
{
treasure = TreasureType.Computer;
}
if(row == 4 && col == 4)
{
treasure = TreasureType.Dog;
}
if(row == 5 && col == 5)
{
treasure = TreasureType.Glasses;
}
var item = new GameFieldItem()
{
Id = id++,
Pyramid = pyramid,
Treasure = treasure
};
this.gameState.GameField.SetItem (row, col, item);
// Alternate pyramids.
if(pyramid == PyramidType.None)
{
pyramid = PyramidType.PyramidA;
}
else if(pyramid == PyramidType.PyramidA)
{
pyramid = PyramidType.PyramidB;
}
else if(pyramid == PyramidType.PyramidB)
{
pyramid = PyramidType.PyramidA;
}
}
}
}
public GameMoveType GetNextMove(GameState gameState, IGameInteractionService interactionService)
{
return GameMoveType.None;
}
public GameFieldItem Move(GameState gameState, GameMoveType move)
{
// The item that was discovered by moving a pyramid.
GameFieldItem itemToMove = null;
var location = gameState.GameField.GetUnusedItemLocation ();
// There always must be an empty field!
if(location == null)
{
throw new InvalidOperationException ("Game field does not have an empty item location!");
}
var emptyItem = gameState.GameField.GetItem (location.Row, location.Column);
switch(move)
{
case GameMoveType.MoveItemAbove:
// Get the pyramid above the empty field and move it down.
itemToMove = gameState.GameField.GetItem (location.Row - 1, location.Column);
break;
case GameMoveType.MoveItemBelow:
// Get the pyramid below the empty field and move it up.
itemToMove = gameState.GameField.GetItem (location.Row + 1, location.Column);
break;
case GameMoveType.MoveItemLeft:
// Get the pyramid left of the empty field and move it right.
itemToMove = gameState.GameField.GetItem (location.Row, location.Column - 1);
break;
case GameMoveType.MoveItemRight:
// Get the pyramid right of the empty field and move it left.
itemToMove = gameState.GameField.GetItem (location.Row, location.Column + 1);
break;
}
// The pyramid that was on the moved item is now where the empty spot was.
emptyItem.Pyramid = itemToMove.Pyramid;
itemToMove.Pyramid = PyramidType.None;
return itemToMove;
}