#include <stdbool.h>
#define BLANK ' '
/**
 * Function draw game field
 * @param rows count of rows
 * @param columns count of columns
 * @param field hold 2d array of characters in game
 */
void game_field(const int rows, const int columns, char field[rows][columns]);


/**
 * Check fields rows if there are same characters
 * @param rows count of rows
 * @param columns count of columns
 * @param field hold 2d array of characters in game
 * @return true, if columns are complete; false otherwise
 */
bool check(const int rows, const int columns, char field[rows][columns]);



/**
 * Function returns 2D array after moving characters based on player input
 * When characters are not same, nothing happens and warning appears
 * Function also find the most upper character and the lower character from columns
 * @param rows count of rows
 * @param columns count of columns
 * @param field hold 2d array of characters in game
 * @param x is column from where character should be moved
 * @param y is column where character should be moved
 */
void down_possible(const int rows, const int columns, char field[rows][columns], int x, int y);


/**
 * Function returns 2D array of randomly generated characters
 * There must be two blank columns and other should be full of characters without '\0' or blank spaces
 * @param rows count of rows
 * @param columns count of columns
 * @param field hold 2d array of characters in game
 */
void generator(const int rows, const int columns, char field[rows][columns]);


/**
 * Starts interactive ball sort puzzle game
 */
void ball_sort_puzzle();