[SDL] Fenetre qui s' affiche et disparait aussitot

Bonjour

Je debute en programmation, j'ai telechargé ce code qui est cencé etre un jeu de serpent avec SDL. Quand je l'execute la fenêtre apparaît et disparaît à la vitesse de la lumière !!!

Voici le code:
#include "snakeh.h"


void putapple();
void puttext(SDL_Surface **surface, char *text, int size, int r, int g, int b);
void setrect(SDL_Rect *rect, int x, int y, int w, int h);

SDL_Event event;

SDL_Color textcolor;
TTF_Font *font;

SDL_Surface *tfps, *tpause, *tscore, *tgameover, *screen, *sprite1, *grass, *back, *apple;
SDL_Rect rtmp;
Mix_Chunk *s;
Uint32 colorkey;

int dx = 1;
int dy = 0;
int score = 0;
int fps = 0;
int startticks, startticksf;

char gticks = 0;
char gticksf = 0;
char cfps[100];
char cscore[100];
char m = 0;
char pause = 1;
char gameover = 0;


struct point
{
int x;
int y;
};
struct point snake[1000];
struct point p;
struct point papple;
int lsnake = 4;

int main(int argc, char **argv)
{
int j,i;
int loop = 1;
for(j = 0 ; j < lsnake; j++)
{
snake[j].x = 10 + lsnake - j;
snake[j].y = 5;
}
p = snake[0];
if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO)!=0)
{
printf("Initialisation impossible!!!");
return 1;
}
TTF_Init();
SDL_WM_SetCaption("WORM SDL", NULL);
screen = SDL_SetVideoMode(WIDTH, HEIGHT, BPP, SDL_DOUBLEBUF | SDL_HWSURFACE);

Mix_OpenAudio(22050, MIX_DEFAULT_FORMAT, 2, 4096);
s = Mix_LoadWAV("poua.wav");
if(s == NULL)
{
printf("!!");
return 1;
}
sprite1 = SDL_LoadBMP("BMP/ball.bmp");
apple = SDL_LoadBMP("BMP/apple.bmp");
grass = SDL_LoadBMP("BMP/grass.bmp");
colorkey = SDL_MapRGB(screen->format, 255, 255, 255);
SDL_SetColorKey(sprite1, SDL_SRCCOLORKEY, colorkey);
SDL_SetColorKey(apple, SDL_SRCCOLORKEY, colorkey);
back = SDL_AllocSurface(SDL_HWSURFACE, WIDTH, HEIGHT, BPP, 0, 0, 0, 0);
puttext(&tpause, "Press Space", 90, 255, 255, 255);
puttext(&tfps, "0 fps", 16, 160, 0, 0);
puttext(&tscore, "Score : 0", 22, 0, 0, 0);
puttext(&tgameover, "GAME OVER", 90, 255, 60, 60);
for(i = 0; i < 40; i++)
{
for(j = 0; j < 30; j++)
{
setrect(&rtmp, i * 20, j * 20, 0, 0);
SDL_BlitSurface(grass, NULL, back, &rtmp);
}
}
setrect(&rtmp, 0, 0, 800, 40);
SDL_FillRect(back, &rtmp, SDL_MapRGB(screen->format, 100, 100, 255));
if(screen==NULL) loop = 0;
putapple();
while(loop)
{
while(SDL_PollEvent(&event))
{
switch(event.type)
{
case SDL_QUIT:
loop = 0;
break;
case SDL_KEYDOWN:
if(event.key.keysym.sym == SDLK_q) loop = 0;
if(event.key.keysym.sym == SDLK_DOWN)
{
if(!m)
{
dx = 0;
dy = 1;
}
}
if(event.key.keysym.sym == SDLK_UP)
{
if(!m)
{
dx = 0;
dy = -1;
}
}
if(event.key.keysym.sym == SDLK_RIGHT)
{
if(m)
{
dx = 1;
dy = 0;
}
}
if(event.key.keysym.sym == SDLK_LEFT)
{
if(m)
{
dx = -1;
dy = 0;
}
}
if(event.key.keysym.sym == SDLK_SPACE)
{
pause = 1 - pause;
if(!pause && gameover)
{
score = 0;
gameover = 0;
sprintf(cscore, "Score : %d", score);
puttext(&tscore, cscore, 22, 0, 0, 0);
lsnake = 4;
for(j = 0 ; j < lsnake; j++)
{
snake[j].x = 10 + lsnake - j;
snake[j].y = 5;
}
p = snake[0];
dx = 1;
dy = 0;
}
}
break;
default:
break;
}
}

if(!gticks)
{
startticks = SDL_GetTicks();
gticks = 1;
}
if((SDL_GetTicks() - startticks) >= 50)
{
if(!pause && !gameover)
{

p.x += dx;
p.y += dy;
if((p.x == papple.x) && (p.y == papple.y))
{
snake[lsnake] = snake[lsnake-1];
snake[lsnake+1] = snake[lsnake-1];
lsnake += 2;
score++;
sprintf(cscore, "Score : %d", score);
puttext(&tscore, cscore, 22, 0, 0, 0);
Mix_PlayChannel(-1, s, 0);
putapple();
}
m = (!dx);
for (j = lsnake ; j > 0; j--) snake[j] = snake[j-1];
if(p.x < 0) p.x = 39;
if(p.x > 39) p.x = 0;
if(p.y < 0) p.y = 27;
if(p.y > 27) p.y = 0;
snake[0] = p;
for(j = 1; j <= lsnake; j++) if((snake[0].x == snake[j].x) && (snake[0].y ==snake[j].y)) gameover = 1;
gticks = 0;
}
SDL_BlitSurface(back, NULL, screen, NULL);
setrect(&rtmp, papple.x * 20, papple.y * 20 + 40, 0, 0);
SDL_BlitSurface(apple, NULL, screen, &rtmp);
for(j = 0; j < lsnake; j++)
{
setrect(&rtmp, snake[j].x * 20, snake[j].y * 20 + 40, 0, 0);
SDL_BlitSurface(sprite1, NULL, screen, &rtmp);
}
}
fps++;
if(gticksf == 0)
{
startticksf = SDL_GetTicks();
gticksf = 1;
}
if(SDL_GetTicks() - startticksf >= 1000)
{
gticksf = 0;
sprintf(cfps, "%d fps", fps);
puttext(&tfps, cfps, 16, 160, 0, 0);
fps = 0;
}
if(pause)
{
setrect(&rtmp, 120, 180, 0, 0);
SDL_BlitSurface(tpause, NULL, screen, &rtmp);
}
if(gameover)
{
setrect(&rtmp, 130, 300, 0, 0);
SDL_BlitSurface(tgameover, NULL, screen, &rtmp);
pause = 1;
}
setrect(&rtmp, 700, 10, 0, 0);
SDL_BlitSurface(tfps, NULL, screen, &rtmp);
setrect(&rtmp, 30, 10, 0, 0);
SDL_BlitSurface(tscore, NULL, screen, &rtmp);
SDL_Flip(screen);
}
SDL_Quit();
return 0;
}
void putapple()
{
int i;
char b = 0;
char c = 0;
while(!c)
{
b = 0;
papple.x = (int)(rand() / (RAND_MAX / 39));
papple.y = (int)(rand() / (RAND_MAX / 27));
for(i = 0; (i < lsnake) && !b; i++)
{
if((snake[i].x == papple.x) && (snake[i].y == papple.y))b = 1;
}
if(!b) c = 1;
}
}
void puttext(SDL_Surface **surface, char *text, int size, int r, int g, int b)
{
textcolor.r = r;
textcolor.g = g;
textcolor.b = b;
font = TTF_OpenFont("Roman.ttf", size);
SDL_FreeSurface(*surface);
*surface = TTF_RenderText_Solid(font, text, textcolor);
TTF_CloseFont(font);
}

void setrect(SDL_Rect *rect, int x, int y, int w, int h)
{
rect->x = x;
rect->y = y;
rect->w = w;
rect->h = h;
}

S'il vous plait, que dois je faire pour executer le programme sans probleme?

Merci

Euuuh...tu pourrais retrouver le lien du code ?
Sinon tu as penser à bien linker les DLL de la SDL, a bien l'installer dans microsoft visual studio ?
Tu as regarder le fichier STDOUT qu'il te ressort en cas d'erreur dans le dossier de ton programme ?

Si elle s'ouvre et se referme a la vitesse (lumiere -6km/h)/2*PI . c'est que ton main a renvoyé -1.
Quelque par dans le prog,surement a l'initialisation.

Place des breakpoint a chaques "return -1" et regarde ou ca foire.

Merci pour les reponses, dans le fichier STDOUT il y a "!!".
J'utilise DEV-C++ j'ai tout linker comme il fallait, la compilation se passe sans probleme.C' est l'execution qui pose probleme.
Il n'y a pas de return -1 dans le programme.
Alors que dois je faire?

merci

S'il y a "!!" dans STDOUT c'est que Mix_LoadWAV("poua.wav") a retourné NULL. Donc le return 0 , appellé après, ferme le programme tout de suite.