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#include <iostream>
#include <string>
#include <ctime>
#include <cstdlib>
#include <thread>
#include <chrono>
const int MAX_BOARD = 300;
void delay(int milliseconds)
{
std::this_thread::sleep_for(std::chrono::duration<unsigned int, std::milli> (milliseconds));
}
class Cell
{
bool state;
public :
Cell() {state = false;}
~Cell() {state = false;}
bool getState() {return state;}
void setState(bool _state) {state = _state;}
char getChar() {if(state) return 'o'; else return '-';}
};
class Board
{
int viewX, viewY;
int maxBoard;
public :
Cell currentLife[MAX_BOARD][MAX_BOARD];
Board(int maxBoard = MAX_BOARD, int viewX = 0, int viewY = 0)
{
Board::maxBoard = maxBoard;
if(Board::maxBoard < 4) Board::maxBoard = 4;
if(Board::maxBoard > MAX_BOARD) Board::maxBoard = MAX_BOARD;
setViewX(viewX);
setViewY(viewY);
}
void setViewX(int newViewX)
{
if(newViewX >= 0 && newViewX <= MAX_BOARD - maxBoard) viewX = newViewX;
else
{
throw("Invalid X view for Board");
}
}
void setViewY(int newViewY)
{
if(newViewY >= 0 && newViewY <= MAX_BOARD - maxBoard) viewY = newViewY;
else
{
throw("Invalid Y view for Board");
}
}
void update()
{
Board backup_board = (*this);
int i, j;
for(i = 0; i < MAX_BOARD; i++)
{
for(j = 0; j < MAX_BOARD; j++)
{
int countAlive = backup_board.countNeighborhood(i, j);
currentLife[i][j].setState(executeRules(countAlive, currentLife[i][j].getState()));
}
}
}
void display()
{
int i, j;
for(i = viewY; i < viewY + maxBoard; i++)
{
std::cout << " ";
for(j = viewX; j < viewX + maxBoard; j++)
{
std::cout << currentLife[i][j].getChar();
}
std::cout << std::endl;
}
}
private :
bool executeRules(unsigned int countAlive, bool currentState)
{
if(currentState == true)
{
// Any live cell with fewer than two live neighbours dies, as if caused by under-population.
if(countAlive < 2) return false;
// Any live cell with two or three live neighbours lives on to the next generation.
if(countAlive == 2 || countAlive == 3) return true;
// Any live cell with more than three live neighbours dies, as if by overcrowding.
if(countAlive > 3) return false;
}
else
{
// Any dead cell with exactly three live neighbours becomes a live cell, as if by reproduction.
if(countAlive == 3) return true;
else
return false;
}
}
int countNeighborhood(int i, int j) // i is row, j is column
{
int count = 0;
if(i > 0 && j > 0)
if(currentLife[i - 1][j - 1].getState() == true) count++;
if(i > 0)
if(currentLife[i - 1][j].getState() == true) count++;
if(i > 0 && j < MAX_BOARD - 1)
if(currentLife[i - 1][j + 1].getState() == true) count++;
if(j > 0)
if(currentLife[i][j - 1].getState() == true) count++;
if(j > 0 && i < MAX_BOARD - 1)
if(currentLife[i + 1][j - 1].getState() == true) count++;
if(i < MAX_BOARD - 1)
if(currentLife[i + 1][j].getState() == true) count++;
if(i < MAX_BOARD - 1 && j < MAX_BOARD - 1)
if(currentLife[i + 1][j + 1].getState() == true) count++;
if(j < MAX_BOARD - 1)
if(currentLife[i][j + 1].getState() == true) count++;
return count;
}
};
int main()
{
Board board(24, 20, 20);
// First set of cells
board.currentLife[0 + 2][1 + 2].setState(true);
board.currentLife[1 + 2][2 + 2].setState(true);
board.currentLife[2 + 2][0 + 2].setState(true);
board.currentLife[2 + 2][1 + 2].setState(true);
board.currentLife[2 + 2][2 + 2].setState(true);
// Second set of cells
board.currentLife[0 + 12][1 + 12].setState(true);
board.currentLife[1 + 12][2 + 12].setState(true);
board.currentLife[2 + 12][0 + 12].setState(true);
board.currentLife[2 + 12][1 + 12].setState(true);
board.currentLife[2 + 12][2 + 12].setState(true);
// Third set of cells
board.currentLife[0 + 28][1 + 28].setState(true);
board.currentLife[1 + 28][2 + 28].setState(true);
board.currentLife[2 + 28][0 + 28].setState(true);
board.currentLife[2 + 28][1 + 28].setState(true);
board.currentLife[2 + 28][2 + 28].setState(true);
while(true)
{
system("cls");
board.display();
board.update();
delay(400);
}
return 0;
}
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