Kharec/drop4
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refactor: rename variable identifiers for clarity

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This commit is contained in:
Sandro CURY CAZZANIGA
2026-01-05 13:33:16 +01:00
parent 5eb3a48045
commit 70d34b73ec
1 changed files with 44 additions and 41 deletions
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85
drop4.c
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@@ -6,7 +6,7 @@
#include <string.h>
#define ROWS 6
#define COLS 7
#define COLUMNS 7
#define EMPTY 0
#define P1 1
#define P2 2
@@ -14,31 +14,31 @@
#define NUM_DIRECTIONS 4
typedef struct {
int board[ROWS][COLS];
int board[ROWS][COLUMNS];
int current_player;
int last_row;
int last_col;
int last_column;
} Game;
void init_game(Game *game) {
for (int i = 0; i < ROWS; i++) {
for (int j = 0; j < COLS; j++) {
for (int j = 0; j < COLUMNS; j++) {
game->board[i][j] = EMPTY;
}
}
game->current_player = P1;
game->last_row = -1;
game->last_col = -1;
game->last_column = -1;
}
void print_board(Game *game) {
printf("\n");
for (int j = 0; j < COLS; j++) {
for (int j = 0; j < COLUMNS; j++) {
printf(" %d ", j);
}
printf("\n");
for (int i = 0; i < ROWS; i++) {
for (int j = 0; j < COLS; j++) {
for (int j = 0; j < COLUMNS; j++) {
char symbol = game->board[i][j] == EMPTY ? '.'
: game->board[i][j] == P1 ? 'X'
: 'O';
@@ -53,51 +53,53 @@ void switch_player(Game *game) {
game->current_player = game->current_player == P1 ? P2 : P1;
}
int drop_piece(Game *game, int col) {
int drop_piece(Game *game, int column) {
for (int i = ROWS - 1; i >= 0; i--) {
if (game->board[i][col] == EMPTY) {
game->board[i][col] = game->current_player;
if (game->board[i][column] == EMPTY) {
game->board[i][column] = game->current_player;
game->last_row = i;
game->last_col = col;
game->last_column = column;
return 1;
}
}
return 0;
}
int is_valid_move(Game *game, int col) {
return col >= 0 && col < COLS && game->board[0][col] == EMPTY;
int is_valid_move(Game *game, int column) {
return column >= 0 && column < COLUMNS && game->board[0][column] == EMPTY;
}
int is_winning_move(Game *game) {
if (game->last_row < 0 || game->last_col < 0) {
if (game->last_row < 0 || game->last_column < 0) {
return 0;
}
int row = game->last_row;
int col = game->last_col;
int player = game->board[row][col];
int column = game->last_column;
int player = game->board[row][column];
const int directions[NUM_DIRECTIONS][2] = {{0, 1}, {1, 0}, {1, 1}, {1, -1}};
for (int dir = 0; dir < NUM_DIRECTIONS; dir++) {
for (int direction = 0; direction < NUM_DIRECTIONS; direction++) {
int count = 1;
for (int offset = 1; offset < WIN_LENGTH; offset++) {
int new_row = row + directions[dir][0] * offset;
int new_col = col + directions[dir][1] * offset;
if (new_row < 0 || new_row >= ROWS || new_col < 0 || new_col >= COLS)
int new_row = row + directions[direction][0] * offset;
int new_column = column + directions[direction][1] * offset;
if (new_row < 0 || new_row >= ROWS || new_column < 0 ||
new_column >= COLUMNS)
break;
if (game->board[new_row][new_col] != player)
if (game->board[new_row][new_column] != player)
break;
count++;
}
if (count >= WIN_LENGTH)
return 1;
for (int offset = 1; offset < WIN_LENGTH; offset++) {
int new_row = row - directions[dir][0] * offset;
int new_col = col - directions[dir][1] * offset;
if (new_row < 0 || new_row >= ROWS || new_col < 0 || new_col >= COLS)
int new_row = row - directions[direction][0] * offset;
int new_column = column - directions[direction][1] * offset;
if (new_row < 0 || new_row >= ROWS || new_column < 0 ||
new_column >= COLUMNS)
break;
if (game->board[new_row][new_col] != player)
if (game->board[new_row][new_column] != player)
break;
count++;
if (count >= WIN_LENGTH)
@@ -108,7 +110,7 @@ int is_winning_move(Game *game) {
}
int is_board_full(Game *game) {
for (int j = 0; j < COLS; j++) {
for (int j = 0; j < COLUMNS; j++) {
if (game->board[0][j] == EMPTY)
return 0;
}
@@ -154,11 +156,11 @@ static int is_quit_command(const char *str) {
}
int get_column_input(Game *game) {
int col;
int column;
char buffer[64];
while (1) {
printf("Player %d, enter a column (0-%d) or 'q' to quit: ",
game->current_player, COLS - 1);
game->current_player, COLUMNS - 1);
if (fgets(buffer, sizeof(buffer), stdin) == NULL) {
return -1;
}
@@ -169,7 +171,7 @@ int get_column_input(Game *game) {
while ((c = getchar()) != '\n' && c != EOF)
;
printf("Error: Input too long. Please enter a number between 0 and %d.\n",
COLS - 1);
COLUMNS - 1);
continue;
}
@@ -184,14 +186,14 @@ int get_column_input(Game *game) {
if (errno == ERANGE || col_long < INT_MIN || col_long > INT_MAX) {
printf(
"Error: Number too large. Please enter a number between 0 and %d.\n",
COLS - 1);
COLUMNS - 1);
continue;
}
if (endptr == buffer) {
printf("Error: Invalid input. Please enter a number between 0 and %d, or "
"'q' to quit.\n",
COLS - 1);
COLUMNS - 1);
continue;
}
@@ -202,25 +204,26 @@ int get_column_input(Game *game) {
if (*endptr != '\0') {
printf("Error: Invalid characters after number. Please enter only a "
"number between 0 and %d.\n",
COLS - 1);
COLUMNS - 1);
continue;
}
col = (int)col_long;
column = (int)col_long;
if (col < 0 || col >= COLS) {
if (column < 0 || column >= COLUMNS) {
printf("Error: Column %d is out of range. Please enter a number between "
"0 and %d.\n",
col, COLS - 1);
column, COLUMNS - 1);
continue;
}
if (!is_valid_move(game, col)) {
printf("Error: Column %d is full. Please choose another column.\n", col);
if (!is_valid_move(game, column)) {
printf("Error: Column %d is full. Please choose another column.\n",
column);
continue;
}
return col;
return column;
}
}
@@ -230,13 +233,13 @@ int main() {
print_board(&game);
while (1) {
int col = get_column_input(&game);
if (col < 0) {
int column = get_column_input(&game);
if (column < 0) {
printf("\nGame interrupted.\n");
break;
}
drop_piece(&game, col);
drop_piece(&game, column);
print_board(&game);
if (is_winning_move(&game)) {
printf("Player %d wins!\n", game.current_player);