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while cin loop works every other try.

pata (67)
I wrote a small game when bored, it takes user input every other try which is the issue. This happened after I changed my players symbol to a happy face using char(2). How does outputing char(2) thru cout effect cin? First I used a '@' symbol and everything ran as it should. Here is the loop below and full code below that. I tried checking the stream state, I tried clearing the buffer after each read.

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 while(cin >> playermove && playermove != 'n'){
        playermove = tolower(playermove);
        switch(playermove){
        case 'a':
            if(!cin)
                cerr << "Stream Error!" << endl;
            m_left();
            isTrap();
            cin.clear();
            break;
        case 'd':
            if(!cin)
                cerr << "Stream Error!" << endl;
            m_right();
            isWin();
            isTrap();
            cin.clear();
            break;
        case 's':
            if(!cin)
                cerr << "Stream Error!" << endl;
            m_down();
            isWin();
            isTrap();
            cin.clear();
            break;
        case 'w':
            if(!cin)
                cerr << "Stream Error!" << endl;
            m_up();
            isWin();
            isTrap();
            cin.clear();
            break;
        case 'y':
            clearscreen();
            player_pos = 0;
            goto START;
            break;
        default:
            cout << "That is not a option!" << endl;
            clearscreen();
            DrawBoard(player_pos);
            cin.clear();
            break;
        }

    }


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#include <iostream>
#include <string>
#include <cctype>

using namespace std;

void DrawBoard(int);
void m_left();
void clearscreen();
void m_right();
void m_down();
void m_up();
void isWin();
void isTrap();

string board(100,'#');
int player_pos = 0;
char playermove;

int main()
{
START:
    cout << "Welcome to Robert's SUPER LAME game!" << endl << "Make your way thru the maze of traps to the last position to win, use wasd keys to move!"
    << endl << endl << "Examples:" << endl << "Push 'd' and press enter moves right."
    << endl << "Push 'a' and press enter moves left." << endl << "Push 'w' and press enter to moves up."
    << endl << "Push 's' and press enter to moves down." << endl << "Player position = '" << char(2) << "' " << endl << endl;
    DrawBoard(player_pos);

   if(playermove == 'Y' || playermove == 'N')
        playermove = tolower(playermove);


    while(cin >> playermove && playermove != 'n'){
        playermove = tolower(playermove);
        switch(playermove){
        case 'a':
            if(!cin)
                cerr << "Stream Error!" << endl;
            m_left();
            isTrap();
            cin.clear();
            break;
        case 'd':
            if(!cin)
                cerr << "Stream Error!" << endl;
            m_right();
            isWin();
            isTrap();
            cin.clear();
            break;
        case 's':
            if(!cin)
                cerr << "Stream Error!" << endl;
            m_down();
            isWin();
            isTrap();
            cin.clear();
            break;
        case 'w':
            if(!cin)
                cerr << "Stream Error!" << endl;
            m_up();
            isWin();
            isTrap();
            cin.clear();
            break;
        case 'y':
            clearscreen();
            player_pos = 0;
            goto START;
            break;
        default:
            cout << "That is not a option!" << endl;
            clearscreen();
            DrawBoard(player_pos);
            cin.clear();
            break;
        }

    }
    
    cout << endl << endl << "Thanks For Playing!!!" << endl;
    return 0;
}



void DrawBoard(const int ppos){
    board = string(100,'#'); // reset board to all '#'
    board[ppos] = char(2); //set player pos on board
    int seatcnt = 0;
    for(int i = 0; i != 100;++i){ //print board
        if(seatcnt != 9){
        cout << board[i];
        ++seatcnt;}
        else if(board[i] == char(2)){ //if first row has been printed, check if player is there and print char for player
            cout << board[i] << endl;
            seatcnt = 0;}
        else{
            cout << '#' << endl; //if player is not there, print last symbol and end the line
            seatcnt = 0;}

            }
}

void m_left(){
    if(board[0] == char(2)){ //check if user is in first position and tryin to go left
        cout << "You cant move that direction!" << endl;
        clearscreen();
        DrawBoard(0);
        }
    else{
    --player_pos;
    clearscreen();
    clearscreen();
    DrawBoard(player_pos);}

}

void m_right(){
        ++player_pos;
        clearscreen();
        clearscreen();
        DrawBoard(player_pos);
    }


void m_up(){
    if(player_pos <= 9){
        cout << "Cant go up from here!" << endl;
        clearscreen();
        DrawBoard(player_pos);}
    else{
        player_pos -= 10;
        clearscreen();
        clearscreen();
        DrawBoard(player_pos);}
}

void m_down(){
    if(player_pos >= 90){
        cout << "Cant go down from here!" << endl;
        clearscreen();
        DrawBoard(player_pos);}
    else{
        player_pos += 10;
        clearscreen();
        clearscreen();
        DrawBoard(player_pos);
        }
}

void clearscreen(){
    cout << string(1000,' ') << endl;}

void isWin(){
    if(player_pos == 99)
        cout << endl << "You fucking rocked this bitch and won the game!" << endl << "Want to play again!?!? (y/n)" << endl;
        

}

void isTrap(){
    switch(player_pos){
    case 2:
    case 13:
    case 24:
    case 35:
    case 46:
    case 57:
    case 78:
    case 89:
    case 95:
        clearscreen();
        cout << endl <<"You landed on a trap! Back to the start position!" << endl;
        clearscreen();
        player_pos = 0;
        DrawBoard(player_pos);
        break;
    }
}
Last edited on
Paoletti301 (315)
I copied and pasted the code and everything seems to work like it should. what seems to be the problem?
pata (67)
Nothing I just wanted you to play my game... JK, I dont know, I restarted my comp and the issue disappeared... Thanks anyway!
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