I'm in an intro to C class, and my professor has assigned us to code a game called "tea party" for our current assignment. I've finished coding the game, and it works for the most part, but there are some certain kinks that I can't seem to work out.
The rules of the game are simple: two players take turns spinning the spinner (emulated by entering "0" and pressing enter), and collecting all 7 items for the tea party. The first player to get all 7 items wins. The only catch is that you cannot collect a sandwich, fruit, or dessert unless you have a plate first. If you land on the LOSE A PIECE square, you must give up one of your pieces. Both of the errors come from the lose a piece instance in the game, so I'm thinking the error must originate from the "get_lost_piece" function.
One of them is that the pieces from the "player" array are numbered oddly in that they are 1 value higher than they should be. The other error is that when a player tries to remove their plate while they have an item that requires the plate, it should print out "Sorry, it is bad manners to eat without a plate. Enter another choice:", but instead, I get an infinite loop that reads "You lost item 1."
Here is the code I have:
#include <stdio.h>
#include <time.h>
#define SLOW_MODE 1
#define NUMPLAYERS 2
#define NUMPIECES 7
#define MAXLEN 20
#define NO_WINNER -1
const char CHOICES[NUMPIECES+1][MAXLEN] = {"PLATE", "NAPKIN", "TEA CUP", "CREAM AND SUGAR", "SANDWICH", "FRUIT", "DESSERT", "LOSE A PIECE"};
void update_player(int player[], int square);
int get_lost_piece(int player[]);
int search(int piece_list[], int choice);
int get_spin();
void init_player(int player[]);
int get_winner(int players[][NUMPIECES]);
int get_next_player(int player_num);
int count_pieces(int player[]);
void print_player(int player[], int player_num);
int main() {
srand(time(0));
int players[NUMPLAYERS][NUMPIECES];
// Initialize each player in the game.
int i;
for (i=0; i<NUMPLAYERS; i++)
init_player(players[i]);
int player_number = 0;
// Play until we get a winner.
int status = get_winner(players);
while (status == NO_WINNER) {
int dummy;
// In slow mode, we stop before every spin.
if (SLOW_MODE) {
printf("Player %d, it is your turn. Type 0 and enter to spin.\n", player_number+1);
scanf("%d", &dummy);
}
// Get the current player's spin and print out her pieces.
int square = get_spin();
printf("Player %d, have landed on the square %s.\n", player_number+1, CHOICES[square]);
update_player(players[player_number], square);
print_player(players[player_number], player_number+1);
// Update the game status.
player_number = get_next_player(player_number);
status = get_winner(players);
printf("\n\n");
}
printf("Congrats player %d, you win!\n", status+1);
return 0;
}
// Pre-conditions: player stores the contents of one player and square is in between 0 and 7, inclusive.
// Post-conditions: The turn for player will be executed with the given square selected.
void update_player(int player[], int square) {
if (square == 7) {
if (count_pieces(player) == 0)
{
printf("There is no piece for you to lose. Lucky you, sort of.\n");
return;
}
else{
int q;
q = get_lost_piece(player);
player[q]= 0;
}
return;
}
player[square]=search(player, square);
// Restricted by having no plate!
if (player[0] == 0) {
if(square == 4 || square == 5 ||square == 6){
printf("Sorry, you can't obtain that item because you don't have a plate yet.\n");}
else{
if (player[square] == 0){
player[square]++;
}
}
}
// Process a regular case, where the player already has a plate.
else {
if (player[square] == 0){
player[square]++;
}
}
}
// Pre-conditions: player stores the contents of one player that has at least one piece.
// Post-conditions: Executes asking a player which item they want to lose, and reprompts them
// until they give a valid answer.
int get_lost_piece(int player[]) {
int choice = -1;
// Loop until a valid piece choice is made.
while (1) {
if (choice == -1){
printf("Which piece would you like to lose?\n");
print_player(player,choice);
scanf("%d", &choice);}
if (player[choice] == 0 && choice < 7 && choice >= 0){
printf("Sorry, that was not one of the choices");
scanf("%d", &choice);
}
if (player[0] == 1 && choice == 4 || choice == 5 ||choice == 6){
printf("Sorry, it is bad manners to eat without a plate. Enter another choice:\n");
scanf("%d", &choice);
}
else{
printf("You lost piece %d\n", choice);
}
}
return choice;
}
// Pre-conditions: piece_list stores the contents of one player
// Post-conditions: Returns 1 if choice is in between 0 and 6, inclusive and corresponds to
// an item in the piece_list. Returns 0 if choice is not valid or if the
// piece_list doesn't contain it.
int search(int piece_list[], int choice) {
int i;
for (i=0; i<NUMPIECES; i++){
if(piece_list[i]==choice){
return 1;}
else {return 0;}
}
}
// Pre-condition: None
// Post-condition: Returns a random value in between 0 and 7, inclusive.
int get_spin() {
return rand() % 8;
}
// Pre-condition: None
// Post-condition: Initializes a player to have no pieces.
void init_player(int player[]) {
int j;
for (j=0; j< NUMPIECES; j++)
player[j]=0;
}
// Pre-condition: players stores the current states of each player in the tea party game.
// Post-condition: If a player has won the game, their 0-based player number is returned.
// In the case of no winners, -1 is returned.
int get_winner(int players[][NUMPIECES]) {
int i =0;
for (i=0; i<NUMPLAYERS; i++){
if(count_pieces(players[i]) == NUMPIECES) {
return i;}
}
return -1;
}
// Pre-condition: 0 <= player_num < NUMPLAYERS
// Post-condition: Returns the number of the next player, in numerical order, with
// a wrap-around to the beginning after the last player's turn.
int get_next_player(int player_num) {
player_num++;
if (player_num == NUMPLAYERS){
player_num = 0;
}
return player_num;
}
// Pre-conditions: player stores the contents of one player
// Post-conditions: Returns the number of pieces that player has.
int count_pieces(int player[]) {
int y, counter;
counter = 0;
for ( y = 0; y < 7; y++){
if(player[y] == 1){
counter++;
}
}
return counter;
}
// Pre-conditions: player stores the contents of one player and player_num is that
// player's 1-based player number.
// Post-conditions: Prints out each item the player has, numbered with the numerical
// "codes" for each item.
void print_player(int player[], int player_num) {
int i;
printf("\n");
printf("Player %d\n", player_num);
for (i=0; i < 7; i++){
if (player[i] == 1){
printf("%d. %s\n", i + 1, CHOICES[i]);
}
}
}
Thanks for the help in advance. I get the feeling that the solution is staring me right in the face, but after spending a couple of days on this, I'm having difficulty spotting the problem.
