bool checkLegalInDirection(char board[26][26], int n, int row, int col,
char colour, int deltaRow, int deltaCol){
int i;
if(positionInBounds(n, row, col)){
if(board[row][col] == 'U'){
//position is on the board and is unoccupied
if(positionInBounds(n, row + deltaRow, col + deltaCol)){
if(board[row + deltaRow][col + deltaCol] != colour
&& board[row + deltaRow][col + deltaCol] != 'U'){
for(i = 1; (positionInBounds(n, row + i*deltaRow, col + i*deltaCol)) && (board[row + deltaRow*i][col + deltaCol*i] != 'U'); i++){
if(board[row + deltaRow*i][col + deltaCol*i] == colour){
return true;
}
}
}
}
}
}
return false;
}
//receives board as input from the user
void getBoard(char board[26][26], int n){
char colour;
char row, col;
printf("Enter board configuration:\n");
scanf(" %c%c%c", &colour, &row, &col);
while(colour != '!' && row != '!' && col != '!'){
if(positionInBounds(n, row - 'a', col - 'a'))
board[row - 'a'][col - 'a'] = colour;
scanf(" %c%c%c", &colour, &row, &col);
}
}
int tilesInDirection(char board[26][26], int n, char colour, int row, int col,
int deltaRow, int deltaCol){
int i, flips;
flips = 0;
if(positionInBounds(n, row, col)){
if(board[row][col] == 'U'){
//position is on the board and is unoccupied
if(positionInBounds(n, row + deltaRow, col + deltaCol)){
if(board[row + deltaRow][col + deltaCol] != colour
&& board[row + deltaRow][col + deltaCol] != 'U'){
for(i = 1; (positionInBounds(n, row + i*deltaRow, col + i*deltaCol)) && (board[row + deltaRow*i][col + deltaCol*i] != 'U'); i++){
if(board[row + deltaRow*i][col + deltaCol*i] == colour){
return flips;
}
flips++;
}
}
}
}
}
return 0;
}
void makeMoveInDirection(char board[26][26], int n, int row, int col,
char colour, int deltaRow, int deltaCol){
int i;
for(i = 1; positionInBounds(n, row + i*deltaRow, col + i*deltaCol) && board[row + deltaRow*i][col + deltaCol*i] != 'U'; i++){
if(board[row + deltaRow*i][col + deltaCol*i] != colour){
board[row + deltaRow*i][col + deltaCol*i] = colour;
}
else if(board[row + deltaRow*i][col + deltaCol*i] == colour){
return;
}
}
}
int edgeScorer(char board[26][26], int n, int row, int col){
int score = 7;
int deltaRow, deltaCol;
for(deltaRow = -1; deltaRow <= 1; deltaRow++){
for(deltaCol = -1; deltaCol <= 1; deltaCol++){
if(deltaRow != 0 || deltaCol != 0)
if(positionInBounds(n, row + deltaRow, col + deltaCol))
if(board[row + deltaRow][col + deltaCol] == 'U')
score--;
}
}
return score;
}
bool checkLegal(int dimension, char board[26][26], char row, char col, char colour){
bool legal = false;
int deltaRow, deltaCol;
if (positionInBounds(dimension, row, col)==false){
return legal;
}
if (board[row-'a'][col-'a']!='U')
return legal;
for(deltaRow=-1;deltaRow<=1;deltaRow++){
for(deltaCol=-1;deltaCol<=1;deltaCol++){
if ((deltaRow!=0)||(deltaCol!=0)){
if (checkLegalInDirection(board, dimension, row, col, colour, deltaRow, deltaCol) == true){
legal = true;
}
}
}
}
return legal;
}
