// Method to place a tile on the board.
public void UpdateAI()
{
int highestX = -1; //The x co-ordinate of the current highest scoring tile
int highestY = -1; //The y co-ordinate of the current highest scoring tile
int highestScore = 0; //The highest score found so far
int currentScore; //The score of the current tile being compared
if (boardBehaviour.currentPlayer == playerNumber)
{
for (int y = 0; y < 8; y++)
{
for (int x = 0; x < 8; x++)
{
if (boardBehaviour.CanPlaceTile(x, y, playerNumber))
{
currentScore = boardBehaviour.GetTileScore(x, y, playerNumber);
if (currentScore > highestScore && boardBehaviour.GetTileState(x, y) == 0)
{
highestScore = currentScore;
highestX = x;
highestY = y;
}
}
}
}
if (highestX != -1 && highestY != -1)
{
boardBehaviour.SetTileState(highestX, highestY, playerNumber);
}
boardBehaviour.TurnComplete();
}
}
/// <summary>
/// Gets the possible placements on the passed in board and returns them as an array of Placement structures.
/// </summary>
/// <returns>The possible placements.</returns>
/// <param name="gameBoard">Game board.</param>
/// <param name="player">Player.</param>
Placement[] GetPossiblePlacements(int[,] gameBoard, int player)
{
Placement[] possiblePlacements;
int numberOfPossiblePlacements = 0;
for (int y = 0; y < 8; y++)
{
for (int x = 0; x < 8; x++)
{
if (boardBehaviour.CanPlaceTile(x, y, playerNumber, gameBoard))
{
numberOfPossiblePlacements++;
}
}
}
if (numberOfPossiblePlacements == 0)
{
return(null);
}
possiblePlacements = new Placement[numberOfPossiblePlacements];
int currentPlacementNumber = 0;
for (int y = 0; y < 8; y++)
{
for (int x = 0; x < 8; x++)
{
if (boardBehaviour.CanPlaceTile(x, y, playerNumber, gameBoard))
{
possiblePlacements [currentPlacementNumber] = new Placement();
possiblePlacements [currentPlacementNumber].x = x;
possiblePlacements [currentPlacementNumber].y = y;
possiblePlacements [currentPlacementNumber].board = new int[8, 8];
int[,] tempBoard = boardBehaviour.SetTileState(x, y, player, gameBoard);
Array.Copy(tempBoard, possiblePlacements [currentPlacementNumber].board, tempBoard.Length);
currentPlacementNumber++;
}
}
}
return(possiblePlacements);
}
//When the tile is clicked
void OnMouseDown()
{
if (boardBehaviour.currentPlayer == 1 && boardBehaviour.GetTileState(x, y) == 0 && player1.enabled && boardBehaviour.CanPlaceTile(x, y, 1))
{
boardBehaviour.SetTileState(x, y, 1);
boardBehaviour.TurnComplete();
}
else if (boardBehaviour.currentPlayer == 2 && boardBehaviour.GetTileState(x, y) == 0 && player2.enabled && boardBehaviour.CanPlaceTile(x, y, 2))
{
boardBehaviour.SetTileState(x, y, 2);
boardBehaviour.TurnComplete();
}
}
Node[] GetBranches(Node root, int depth)
{
Node[] branches;
int currentPlayer;
int numberOfBranches = 0;
//Prevents the simulation from running too deep.
if (depth > 2)
{
return(null);
}
//Work out who the current player is
if (playerNumber == 1)
{
if (depth == 1)
{
currentPlayer = 1;
}
else
{
currentPlayer = 2;
}
}
else
if (depth == 1)
{
currentPlayer = 2;
}
else
{
currentPlayer = 1;
}
//Calculate how many possible moves there are and thus how many branches we need
for (int y = 0; y < 7; y++)
{
for (int x = 0; x < 7; x++)
{
if (boardBehaviour.CanPlaceTile(x, y, currentPlayer, root.board))
{
numberOfBranches++;
}
}
}
int currentBranch = 0;
branches = new Node[numberOfBranches];
//For each possible branch, simulate a turn
for (int y = 0; y < 7; y++)
{
for (int x = 0; x < 7; x++)
{
if (boardBehaviour.CanPlaceTile(x, y, currentPlayer, root.board))
{
Debug.Log("Simulating move at " + x + "," + y + ", move " + currentBranch + "/" + numberOfBranches);
branches [currentBranch] = new Node();
branches [currentBranch].board = new int[8, 8];
branches [currentBranch] = SimulateTurn(x, y, currentPlayer, root);
Debug.Log("Successful run, depth " + depth);
currentBranch++;
}
}
}
//For each possible branch, get their branches
for (int i = 0; i < numberOfBranches; i++)
{
branches [i].next = GetBranches(branches [i], depth + 1);
}
return(branches);
}
