//function used to perform the move of the enemy
public void performEnemyMove(MonteCarloPosition _p)
{
//increments the total moves
this._totalMoves++;
//sets old enemy position to current enemy position
MonteCarloPosition _oldPos = FindPlayer(_enemyVal);
//finds the adjacent tiles for the enemy to check for collision with the player object, returning true if the player object is adjacent to the enemy object
bool _opponentCheck = CheckOpponentAdjacent();
//checks if the opponent check value is true
if (_opponentCheck)
{
//reduces the player health by 1
this._playerHealth--;
}
else
{
//sets board value of the old enemy position to 0, whilst setting the new enemy position to the player value
_boardValues [_oldPos.GetX(), _oldPos.GetZ()] = 0;
_boardValues [_p.GetX(), _p.GetZ()] = _enemyVal;
//finds the adjacent tiles for the enemy to check for collision with the player object, returning true if the player object is adjacent to the enemy object
bool _opponentCheck2 = CheckOpponentAdjacent();
//checks if the opponent check value is true
if (_opponentCheck2)
{
//reduces the player health by 1
this._playerHealth--;
}
}
}
//function that gets all legal positions for a selected player
public List <MonteCarloPosition> GetLegalPositions(int _playerNo)
{
//creates list to store legal positions
List <MonteCarloPosition> _legalPositions = new List <MonteCarloPosition> ();
MonteCarloPosition _pos;
//finds the object on the board dependant on the player number referenced
_pos = FindPlayer(_playerNo);
//sets the board x and z to the current object x and z position
int _boardX = _pos.GetX();
int _boardZ = _pos.GetZ();
int _checkX;
int _checkZ;
//loops used to check all adjacent tiles, except diagonal tiles
for (int x = -1; x <= 1; x++)
{
for (int z = -1; z <= 1; z++)
{
if (x == 0 || z == 0)
{
if (x == 0 && z == 0)
{
}
else
{
//sets the check x and z to the current board x and z position plus the current x and z iteration values
_checkX = _boardX + x;
_checkZ = _boardZ + z;
//checks if the check x and check z values are within the grid
if (_checkX >= 0 && _checkX < GridSystem._gridSizeX && _checkZ >= 0 && _checkZ < GridSystem._gridSizeZ)
{
//checks if the board values are set to 0 (being empty)
if (_boardValues [_checkX, _checkZ] == 0)
{
MonteCarloPosition _position = new MonteCarloPosition();
//sets the position values to the current check x and check z values
_position.SetX(_checkX);
_position.SetZ(_checkZ);
//adds the position to the list of legal positions
_legalPositions.Add(_position);
}
}
}
}
}
}
//returns the list of legal positions
return(_legalPositions);
}
//function used to perform MCTS
public MonteCarloPosition StartMCTS(float _curPlayerHealth, float _curEnemyHealth, Node _objNode)
{
//updates the board to fit the current grid
MonteCarloBoard _board = UpdateBoard(_curPlayerHealth, _curEnemyHealth, _objNode);
//performs MCTS on the updated board
_board = _mcts.findNextMove(_board);
MonteCarloPosition _enemyPos = new MonteCarloPosition();
//sets the new enemy pos to the positions returned from MCTS
_enemyPos = _board.FindPlayer(MonteCarloBoard._enemyVal);
//returns the enemy position
return(_enemyPos);
}
//performs enemy turn
public void EnemyTurn()
{
//checks if enemy player exists
if (_player != null)
{
//unselects any selected tiles
_gridSystem.GetComponent <GridSystem>().UnselectTiles();
//finds all enemies on the grid
_enemies = FindEnemies();
//checks if there are enemies within the enemies array
if (_enemies.Length > 0)
{
//checks if the current enemy array index is null
if (_enemies [_curEnemy] == null)
{
//goes to the next enemy
NextEnemy();
}
else
{
//finds the selected enemy in the array index
Node _node = GridSystem.FindSelectedObject(_enemies [_curEnemy], 0);
//finds the position to move to using MCTS
_positionToMoveTo = _enemies[_curEnemy].GetComponent <MonteCarloEnemy> ().StartMCTS(_player.GetComponent <Player_Controller> ()._health, _enemies[_curEnemy].GetComponent <EnemyController>()._health, _node);
//checks whether an action should be performed and which action
CheckForAction();
}
}
else
{
//changes to player turn if no enemy objects in enemies array
_gameManager.GetComponent <GameManager> ().ChangeTurn();
}
}
else
{
//displays if no player on grid
Debug.Log("Enemy Manager Player Null");
}
}
//function used to find an object on the board
public MonteCarloPosition FindPlayer(int _playerNo)
{
MonteCarloPosition pos = new MonteCarloPosition();
int _player = 0;
//checks for the player no, setting player as the referenced player value
if (_playerNo == _enemyVal)
{
_player = _enemyVal;
}
else if (_playerNo == _playerVal)
{
_player = _playerVal;
}
//loops through all board values on the board
for (int x = 0; x < GridSystem._gridSizeX; x++)
{
for (int z = 0; z < GridSystem._gridSizeZ; z++)
{
//checks if the current board value is equal to the player defined by the player no
if (_boardValues [x, z] == _player)
{
//sets the position x and z values to the current board x and z values
pos.SetX(x);
pos.SetZ(z);
//returns the position
return(pos);
}
}
}
//returns null if no object found
return(null);
}
public MonteCarloBoard(MonteCarloBoard _board)
{
this._boardValues = new int[GridSystem._gridSizeX, GridSystem._gridSizeZ];
int[,] _boardValues = _board.getBoardValues();
this._movedPosition = _board._movedPosition;
this._playerHealth = _board._playerHealth;
this._enemyHealth = _board._enemyHealth;
this._originalPlayerHealth = _board._originalPlayerHealth;
this._originalEnemyHealth = _board._originalEnemyHealth;
for (int x = 0; x < GridSystem._gridSizeX; x++)
{
for (int z = 0; z < GridSystem._gridSizeZ; z++)
{
this._boardValues [x, z] = _boardValues [x, z];
}
}
}
//function used to perform the move of the player
public void performPlayerMove(MonteCarloPosition _p)
{
//increments the total moves
this._totalMoves++;
//finds the shootable tiles for the player to check for collision with the enemy object, returning true if an enemy object is in line of sight
bool _opponentCheck = FindPlayerShootTiles();
//checks if the opponent check value is true
if (_opponentCheck)
{
//reduces the enemy health by 1
this._enemyHealth--;
}
//performs player action if opponent check value is false
else
{
//sets old player position to current player position
MonteCarloPosition _oldPos = FindPlayer(_playerVal);
//randomly decides whether to move the player 1 or 2 places
int move = (int)Random.Range(0, 2);
//if move value is 0, moves the player 1 position
if (move == 0)
{
//sets board value of the old player position to 0, whilst setting the new player position to the player value
_boardValues [_oldPos.GetX(), _oldPos.GetZ()] = 0;
_boardValues [_p.GetX(), _p.GetZ()] = _playerVal;
//finds the shootable tiles for the player to check for collision with the enemy object, returning true if an enemy object is in line of sight
bool _opponentCheck2 = FindPlayerShootTiles();
//checks if the opponent check value is true
if (_opponentCheck2)
{
//reduces the enemy health by 1
this._enemyHealth--;
}
}
//if move value is not 0, moves the player 2 positions
else
{
//sets board value of the old player position to 0, whilst setting the new player position to the player value
_boardValues [_oldPos.GetX(), _oldPos.GetZ()] = 0;
_boardValues [_p.GetX(), _p.GetZ()] = _playerVal;
//finds the legal positions for the player
List <MonteCarloPosition> _legalPositions = this.GetLegalPositions(_playerVal);
//sets a new int to the number of legal positions found
int _totalLegalPossibilities = _legalPositions.Count;
//selects a random number between 0 and the number of legal positions
int _selectRandom = (int)(Random.Range(0, _totalLegalPossibilities));
//sets the second move position to that of the randomly selected legal position
MonteCarloPosition _p2 = _legalPositions [_selectRandom];
//sets board value of the old player position to 0, whilst setting the new player position to the player value
_boardValues [_p.GetX(), _p.GetZ()] = 0;
_boardValues [_p2.GetX(), _p2.GetZ()] = _playerVal;
//finds the shootable tiles for the player to check for collision with the enemy object, returning true if an enemy object is in line of sight
bool _opponentCheck2 = FindPlayerShootTiles();
//checks if the opponent check value is true
if (_opponentCheck2)
{
//reduces the enemy health by 1
this._enemyHealth--;
}
}
}
}
