guiController

import info.gridworld.grid.Location;
import java.util.List;
import java.util.Scanner;
import javax.swing.JOptionPane;

/*
 * guiController simulates a graphical, electronic Connect 4
 * controller. The controller contains the graphical Connect 4,two players, and the  
 * controller keeps track of the players turn and checks for wins. The guiController also 
 * controls the text based game.
 */
public class guiController
{
	private Connect4GUI gui;
	private Player p1, p2;
	private boolean p1Turn, hasWon, hasColorReversed;
	private Scanner sc;
	
	//Constructs a new guiContoller object.
	public guiController()
	{
		gui = new Connect4GUI();
		p1 = new Player("RRRR", gui.board());
		p2 = new Player("BBBB", gui.board());
		sc = new Scanner(System.in);
		p1Turn = true;
		placeColorReversal();
		placeColCrusher();
		placeBlast();
		placeRainPieces();
		gui.world().show();
	}
	
	//Plays Connect 4. As long as a player has not won, the game continues on, 
//alternating between player 1 and player 2's turn.
	public void playConnect4()
	{
		display();
		while(!hasWon)
		{
			if(p1Turn)
			{
				playerTurn(p1, p2);
				p1Turn = false;
			}
			else //player 2's turn
			{
				playerTurn(p2, p1);
				p1Turn = true;
			}
		}
	}
	
	//Receives input from the Player player, checks if the column is acceptable, places 
//the piece and prints out the board.
	public void playerTurn(Player player, Player otherP)
	{
		System.out.print(player + ", enter column to drop piece: ");
		String s = JOptionPane.showInputDialog(player + ", enter column to drop piece: ");
		sc = new Scanner(s);
		int col = sc.nextInt() - 1;
		checkCol(col, player, otherP);
		updateGUI();
		System.out.println("");
		System.out.println(gui.board());
		checkWin();
		if(hasWon && hasColorReversed)
		{
			System.out.println(otherP + " won!");
			JOptionPane.showMessageDialog(null, player + " won!", "Game Over!", 
JOptionPane.INFORMATION_MESSAGE);
		}
		else if(hasWon)
		{
			System.out.println(player + " won!");
			JOptionPane.showMessageDialog(null, player + " won!", "Game Over!", 
JOptionPane.INFORMATION_MESSAGE);
		}
		if(!hasPowerUps())
			refreshPowerUps();
	}
	
	//Checks whether the column that Player "player" is valid. If not, checkCol is 
//called again until a valid column is entered.
	public void checkCol(int col, Player player, Player other)
	{
		if(!player.checkCol(col))
		{
			System.out.print("That column is not valid. Try again: ");
			String s = JOptionPane.showInputDialog("That column is not valid. Try again: ");
			sc = new Scanner(s);
			col = sc.nextInt() - 1;
			checkCol(col, player, other);
		}
		else //player entered a valid column number
			if(gui.add(player, col) instanceof ColorReversal)
				hasColorReversed = true;
	}
	
	//Checks all possible win possibilities. If a player has won in any possible way, 
//hasWon is set to true.
	public void checkWin()
	{ 
		for(int i = 0; i < gui.board().size(); i++)
			if(gui.board().checkColWin(i)||gui.board().checkRowWin(i))
				hasWon = true;
		
		if(gui.board().checkPosDiagWin(2,0) || gui.board().checkPosDiagWin(1,0)
		   || gui.board().checkPosDiagWin(0,0) || gui.board().checkPosDiagWin(0,1)
		   || gui.board().checkPosDiagWin(0,2))
			hasWon = true;
		
		else if(gui.board().checkNegDiagWin(3,0) || gui.board().checkNegDiagWin(4, 0)
		    || gui.board().checkNegDiagWin(5,0) || gui.board().checkNegDiagWin(5,1)
		    || gui.board().checkNegDiagWin(5, 2))
		      hasWon = true;
	}
	
	//Returns Connect4GUI gui.
	public Connect4GUI getGUI()
	{ return gui; }
	
	//Repaints the Grid to update any new pieces added.
	public void updateGUI()
	{ gui.world().show(); }
	
	//Prints out welcome display and the game board.
	public void display()
	{
JOptionPane.showMessageDialog(null, "Get Ready To Play Connect 4!", 
  "Welcome!", JOptionPane.INFORMATION_MESSAGE);
		System.out.println("Get Ready To Play Connect 4!");
		JOptionPane.showMessageDialog(null, p1 + "'s turn first!");
		System.out.println(p1 + "'s turn first!");
		System.out.println("");
		System.out.println(gui.board());
	}
	
	//Places a ColorReversal power up at a random location.
	public void placeColorReversal()
	{ 
		ColorReversal cr = new ColorReversal(gui.grid(), gui.board());
		cr.place(cr.randomLoc());
	}
	
	//Places a ColCrusher power up at a random location.
	public void placeColCrusher()
	{
		ColCrusher cc = new ColCrusher(gui.grid(), gui.board());
		cc.place(cc.randomLoc());
		cc = new ColCrusher(gui.grid(), gui.board());
		cc.place(cc.randomLoc());
	}
	
	//Places a Blaster power up at a random location.
	public void placeBlast()
	{
		Blast b = new Blast(gui.grid(), gui.board());
		b.place(b.randomLoc());
		b = new Blast(gui.grid(), gui.board());
		b.place(b.randomLoc());
	}
	
	//Places a RainPieces power up at a random location.
	public void placeRainPieces()
	{
		RainPieces rp = new RainPieces(gui.grid(), gui.board());
		rp.place(rp.randomLoc());
	}
	
	//Returns true if at least one power up remains on the grid, false otherwise.
	public boolean hasPowerUps()
	{
		List<Location> occLocs = gui.grid().getOccupiedLocations();
		for(Location loc : occLocs)
		{
			if(gui.grid().get(loc) instanceof PowerUp)
				return true;
		}
		return false;
	}
	
	//Refreshes the power ups on the board.
	public void refreshPowerUps()
	{
		placeRainPieces();
		placeBlast();
		placeColCrusher();
		placeColorReversal();
	}
}