[SDL] EXEMPLE DE GESTION DES EVENTS

#include <SDL.h>
#include <stdlib.h>

SDL_Surface *Screen, *Rect, *Rect2;
SDL_Rect Rectangle, Rectangle2;
SDL_Event Event;
int Done = 0;
int whatplayer = 1;

void Display() {
    SDL_FillRect(Screen, 0, 0);
    SDL_BlitSurface(Rect, 0, Screen, &Rectangle);
    SDL_BlitSurface(Rect2, 0, Screen, &Rectangle2);
    SDL_Flip(Screen);
}

int main(int argc, char *argv[]) {
    if(SDL_Init(SDL_INIT_VIDEO) < 0) {
        printf(stderr, "ERROR ! %s\n", SDL_GetError());
        return 5;
    }
    Screen = SDL_SetVideoMode(640, 480, 32, SDL_SWSURFACE | SDL_DOUBLEBUF);
    SDL_WM_SetCaption("Control : n°1", 0);
    if(Screen == 0) {
        printf(stderr, "ERROR ! %s\n", SDL_GetError());
        return 10;
    }
    Rectangle.x = 50;
    Rect = SDL_LoadBMP("hit1.bmp");
    Rect2 = SDL_LoadBMP("hit2.bmp");
    while(Done != 1) {
        while(SDL_PollEvent(&Event)) {
                switch(Event.type) {
                                case SDL_QUIT : Done = 1;
                                case SDL_KEYDOWN : switch(Event.key.keysym.sym) {
                                                                
                                                                case SDLK_LEFT : 
                                                                if(whatplayer == 1 ) {
                                                                Rectangle.x = Rectangle.x - 20;
                                                                } else if(whatplayer == 2) {
                                                                Rectangle2.x = Rectangle2.x - 20;
                                                                } break;
                                                                
                                                                case SDLK_RIGHT :
                                                                if(whatplayer == 1 ) {
                                                                Rectangle.x = Rectangle.x + 20;
                                                                } else if(whatplayer == 2) {
                                                                Rectangle2.x = Rectangle2.x + 20;
                                                                } break;
                                                                
                                                                case SDLK_UP : 
                                                                if(whatplayer == 1 ) {
                                                                Rectangle.y = Rectangle.y - 20;
                                                                } else if(whatplayer == 2) {
                                                                Rectangle2.y = Rectangle2.y - 20;
                                                                } break;
                                                                
                                                                case SDLK_DOWN :
                                                                if(whatplayer == 1 ) {
                                                                Rectangle.y = Rectangle.y + 20;
                                                                } else if(whatplayer == 2) {
                                                                Rectangle2.y = Rectangle2.y + 20;
                                                                } break;
                                                                
                                                                case SDLK_ESCAPE :
                                                                if(whatplayer == 1) { whatplayer = 2; SDL_WM_SetCaption("Control : n°2", 0); } 
                                                                else if(whatplayer == 2) {
                                                                whatplayer = 1; SDL_WM_SetCaption("Control : n°1", 0);
                                                                } break;
                                                   }
        }
    }
    Display();
    }
    return 0;
}