ErrorCode RandFoodLocation(Matrix *matrix) {
Point p;
do {
/*Rebecca's change*/
get_random_bytes(&p.x, sizeof(int));
p.x = p.x % N;
get_random_bytes(&p.y, sizeof(int));
p.y = p.y % N;
} while (!(IsAvailable(matrix, p) || IsMatrixFull(matrix))); //fixed by Piazza
if (IsMatrixFull(matrix))
return ERR_BOARD_FULL;
(*matrix)[p.y][p.x] = FOOD;
return ERR_OK;
}
bool Update(Matrix *matrix, Player player, privateGameData* PGD, char move)
{
ErrorCode e;
Point p = GetInputLoc(matrix, player, move);
if (!CheckTarget(matrix, player, p))
{
PGD->myGame->Winner =-player;
return FALSE;
}
e = CheckFoodAndMove(matrix, player, p);
if (e == ERR_BOARD_FULL)
{
PGD->myGame->Winner = TIE;
return FALSE;
}
if (e == ERR_SNAKE_IS_TOO_HUNGRY)
{
PGD->myGame->Winner =-player;
return FALSE;
}
// only option is that e == ERR_OK
if (IsMatrixFull(matrix))
{
PGD->myGame->Winner = TIE;
return FALSE;
}
return TRUE;
}
ErrorCode RandFoodLocation(Matrix *matrix)
{
Point p;
int i=0;
do
{
get_random_bytes(&p.x, sizeof(int));
p.x %= N;
get_random_bytes(&p.y, sizeof(int));
p.y %= N;
++i;
} while (!(IsAvailable(matrix, p) || IsMatrixFull(matrix)));
if (IsMatrixFull(matrix))
return ERR_BOARD_FULL;
(*matrix)[p.y][p.x] = FOOD;
return ERR_OK;
}
bool Update(Matrix *matrix, PlayerS* player, char move) {
//the matrix we got is the board of the current game
ErrorCode e;
Point p = GetInputLoc(matrix, player->color, atoi(move));
Game* currentGame = player->myGame;
//TODO: check why doesn't recognize PlayerS fields
if (!CheckTarget(matrix, player->color, p)) {
// if the move is illegal, out of bounds, or trying to eat a snake
down(&(currentGame->isFinishedLock));
currentGame->isFinished = TRUE;
up(&(currentGame->isFinishedLock));
//set winner
down(&(currentGame->winnerLock));
if (player->color == WHITE) {
currentGame->winner = BLACK_IS_WINNER;
} else {
currentGame->winner = WHITE_IS_WINNER;
}
up(&(currentGame->winnerLock));
return FALSE;
}
e = CheckFoodAndMove(matrix, player->color, p);
//Rebeca's change
if (e == ERR_SNAKE_IS_TOO_HUNGRY) {
down(&(currentGame->isFinishedLock));
currentGame->isFinished = TRUE;
up(&(currentGame->isFinishedLock));
down(&(currentGame->winnerLock));
if (player->color == WHITE) {
currentGame->winner = BLACK_IS_WINNER;
} else {
currentGame->winner = WHITE_IS_WINNER;
}
up(&(currentGame->winnerLock));
return FALSE;
}
//probabely checks if board is full after the snake has moved
if (e == ERR_BOARD_FULL || IsMatrixFull(matrix)) {
down(&(currentGame->isFinishedLock));
currentGame->isFinished = TRUE;
up(&(currentGame->isFinishedLock));
down(&(currentGame->winnerLock));
currentGame->winner = A_TIE;
up(&(currentGame->winnerLock));
return FALSE;
}
return TRUE;
}