public void initArea(){
		
		Random r = new Random();
		height = startHeight;
		width = startWidth;
		x = 0;
		y = 0;
		survived=0;
		area = new boolean [height+2][width+2];
		for(int i=1; i<=height; i++){
			for(int j=1; j<=width; j++){
				area[i][j] = r.nextBoolean();
				if (area[i][j]){
					survived++;
				}
			}
		}

	}