import java.util.ArrayList;



public class Life {
	private LifeBoard board;
	private int neighbours;
	private int rows, cols;


	// Skapar ett Life-spel med spelplanen board
	public Life(LifeBoard board) {
		this.board = board;
	}

	// Skapar en ny generation
	public void newGeneration() {

		rows = board.getRows();
		cols = board.getCols();
		LifeBoard tempBoard = new LifeBoard(rows, cols);


		for (int i=0; i < rows; i++ ) {
			for (int k=0; k< cols; k++) {

				getNeighbours(board, i, k);


				if (neighbours < 2 || neighbours > 3) {
					tempBoard.put(i, k, false);
				}
				 if ( neighbours == 2 && (board.get(i, k) == true)){
					tempBoard.put(i, k, true);

				}
				 if (neighbours == 3) {
					tempBoard.put(i, k, true);
				}

			}

		}

		for (int y=0; y < rows; y++ ) {
			for (int x=0; x< cols; x++) {
				board.put(y, x, tempBoard.get(y, x));
			}

		}
		board.increaseGeneration();
	}

	// Ändrar innehållet i rutan med index row, col från individ till tom eller
	// tvärtom
	public void flip(int row, int col) {

		if (board.get(row, col) == true) {
			board.put(row, col, false);
		} else
			board.put(row, col, true);

	}

	private int getNeighbours(LifeBoard board, int row, int col) {

		neighbours = 0;

		//for (int i=-1;i <=1; i++) {
			//for(int k = -1; k<=1; k++) {
				//if ((board.get(row + i, col + k)) && (i !=0 && k!=0)) {
					//neighbours++;
				//}
			//}
		//}

		if (board.get(row -1, col)) {//N
			neighbours++;
		}
		if (board.get(row -1, col+1)) {//NE
			neighbours++;
		}
		if (board.get(row , col+1)) {//E
			neighbours++;
		}
		if (board.get(row +1, col+1)) {//SE
			neighbours++;
		}
		if (board.get(row +1, col)) {//S
			neighbours++;
		}
		if (board.get(row +1, col-1)) {//SW
			neighbours++;
		}
		if (board.get(row , col-1)) {//W
			neighbours++;
		}
		if (board.get(row -1, col-1)) {//NW
			neighbours++;
		}


		return neighbours;


	}
}