#include <windows.h>
#include "game.h"

int Random(long maxValue)	
{
	int temp = rand();
	if (maxValue != 0)
		return temp /(RAND_MAX/maxValue);
	else return 1;
}


CGame::CGame()
{
	Reset();
}


CGame::~CGame()
{
}


void CGame::Reset()
{
	Height = ROWS-1;
	Width = COLUMNS-1;
	
	int n = 0;
	for (int i=0; i<=Height; i++)
	for (int j=0; j<=Width; j++)
	{
		Desk[i][j] = n;
		n++;
	}
	
	Desk[Height][Width] = -1;
	moves = 0;	
}


int CGame::GetCell(int row, int col)
{
	return Desk[row][col];
}


bool CGame::MoveIt(int row, int col)
{
	bool can_move = false;

	
	if ((row < 0) | (row > Height) | (col < 0) | (col > Width))
		return false;
	
	if (Desk[row][col] == -1)
		return false;
	
	
	if (Desk[row][col-1] == -1)
	{
		Desk[row][col-1] = Desk[row][col];
		Desk[row][col] = -1;
		can_move = true;
	}

	if (Desk[row][col+1] == -1)
	{
		Desk[row][col+1] = Desk[row][col];
		Desk[row][col] = -1;
		can_move = true;
	}

	if (Desk[row-1][col] == -1)
	{
		Desk[row-1][col] = Desk[row][col];
		Desk[row][col] = -1;
		can_move = true;
	}

	if (Desk[row+1][col] == -1)
	{
		Desk[row+1][col] = Desk[row][col];
		Desk[row][col] = -1;
		can_move = true;
	}
		
	if (can_move)
		moves++;

	return can_move;
}


void CGame::Mix(int quality)
{
	for (int i=0;i<quality;i++)
		MoveIt(Random(Height+1),Random(Width+1));

	moves = 0;
}