Thread: if (key [KEY_ESC])

Hi guys.

I've got one question with allegro and the function key([//Name of the key])

I want that, if the user press ENTER, the program continues with the execution, but if the user press ESC, the program finishes.

The code I'm using is:

Code:

    printf("Press Enter to continue or ESC to exit...\n");
    do{
        	if (keypressed()) { 
            //ENTER
            	if (key[KEY_ENTER]) {  
           		    llegeix(jRanking); 
                    tauler(cMode,jugador, nJugadors,casella);
                    joc(jugador, nJugadors, casella, jRanking); 
                    nOk = 1;
                    
                }  
                //ESC..  
                if (key[KEY_ESC]) {   
                    printf("FINS AVIAT!\n");
                    nOk = 1;
                    exit(1); 
                    
                } 
                //like fflush() in allegro. 
                clear_keybuf();  
            }
	}while(!nOk);

The problem here is that nothing happens. The printf appears but if I press any key, nothing happens.

I was trying to find the error but I didn't find it
Can you help me, please?

If you need more code because you think that the error is not here, just ask me for it.

Thank you guys!

i know i need more, as keypressed is unknown to me.....

headers?

i do know there was kbhit() in conio.h, but i know that is a "garbage" heade now!

Ok Crossfire, here is the rest of the code. It's part of the main.

Code:

#include "tipus.h"
int main(void) 
{
    int i = 0;
    int nCorrecte = 0;
    int nJugadors = 0;
    char cMode;
    int nDaus[4];
    int error;
    int nRes = 0, nOk = 0;
    stPlayer jugador[4];
    stCasella casella[97];
    stDaus astDaus[4];
    stPlayer jRanking[5];
    
    srand(time(NULL));
 
 
 //Inicialització llibreria allegro 
allegro_init(); 
//Inicialització teclat 
install_keyboard(); 
//Inicialització entorn grafic, finestra 800*600 
error=set_gfx_mode(GFX_SAFE, 800, 600, 0, 0); 
if (error==0){ //Entrar codi aquí!
    while(nCorrecte == 0){
        printf("Mode de joc <E o F>: ");
        fflush(stdout);
        nRes = scanf("%c",&cMode);
 
        cMode = (char) tolower(cMode); 
        if(nRes == 1 && ( cMode == 'e' || cMode == 'f')){
            nCorrecte = 1;
        }
        else{
            printf("Error! Mode de joc incorrecte!\n");
        }
        getchar(); 
    }
    nCorrecte = 0;
    while(nCorrecte == 0){
        printf("\nNombre de jugadors: ");
        fflush(stdout); 
        nRes = scanf("%d",&nJugadors);
        if(nRes == 1 && (nJugadors >= 2 && nJugadors <= 4) ){
            nCorrecte = 1;
        }
        else{
            printf("Error, el nombre de jugadors ha d'estar entre 2 i 4.\n");
        }
 
        
        getchar(); 
    }
 
    
    for( i = 0; i < nJugadors; i++){
        printf("\nNom Jugador %d:  ", i+1);
        if(fgets(jugador[i].strNom, sizeof(jugador[i].strNom),stdin) != NULL) 
        {
            nRes = strlen(jugador[i].strNom);
            if(nRes > 0 && jugador[i].strNom[nRes-1] == '\n')
                jugador[i].strNom[nRes-1] = '\0';
                jugador[i].nColorfitxa = 2 + i;
                jugador[i].nCasella = 0;
        }
    }
 
    printf("Daus de sortida: \n");
 
    for(i = 0; i < nJugadors; i++){
        astDaus[i].nDaus = rand() % 6+1;
        astDaus[i].nOrdre = i;
        printf("%d.%s - %d de 6\n",i+1,jugador[i].strNom,astDaus[i].nDaus);
    }
    
    
        ordenacio(jugador, astDaus, nJugadors);
 
    printf(" Enter to continue o ESC to exit...\n");
    do{
        	if (keypressed()) { 
            //ENTER...
            	if (key[KEY_ENTER]) {  
           		    llegeix(jRanking); 
                    tauler(cMode,jugador, nJugadors,casella);
                    joc(jugador, nJugadors, casella, jRanking); 
                    nOk = 1;
                    
                }  
                //ESC..  
                if (key[KEY_ESC]) {   
                    printf("FINS AVIAT!\n");
                    nOk = 1;
                    exit(1); 
                    
                } 
                //like fflush() in allegro. 
                clear_keybuf();  
            }
		}while(!nOk); 
    
    llegeix(jRanking); 
    tauler(cMode,jugador, nJugadors,casella);
    for(i = 0; i < nJugadors; i++){
        circlefill(screen, 610, 150 + (20*i),6, jugador[i].nColorfitxa);
        circle(screen, 610, 150 + (20*i),6, jugador[i].nColorfitxa);
        textprintf_ex(screen, font, 645, 150 + (20*i), 0, 14, "%s", jugador[i].strNom);
    }
    joc(jugador, nJugadors, casella, jRanking); 
     
    
}
else{ 
allegro_message("No es pot crear la finestra\n%s\n",allegro_error); 
printf("No es pot crear la finestra\n%s\n",allegro_error); 
} 
//Close allegro 
system("pause"); 
allegro_exit(); 
}  
END_OF_MAIN();

The header "tipus.h" includes "allegro.h".

After a quick look at the documentation 'keypressed()' doesn't return or read any key value.

keypressed() simply tells you if a key is/was pressed since the last call to readkey(). You have to call readkey() to actually read the key that was pressed then you compare it to the value such as KEY_ENTER (which is not part of an array)

A simple example without any initialization or anything:

Code:

if (keypressed()) {
  int key;
  key = readkey();

  switch(key) {
     case KEY_ESC:
     /* ESC pushed */
     break;
     case KEY_ENTER:
      /* enter pushed */
     break;
     default:
     /* unhandled key */
     break;
  }
}