main.c

#include "main.h"

extern void getInput(SDL_Event event);

int main(int argc, char* argv[])
{
    SDL_Surface *screen, *temp, *sprite;
    int colorkey;

    SDL_Init(SDL_INIT_VIDEO); //Initialize SDL

    SDL_WM_SetCaption(WINDOW_TITLE, 0); //Window title

    screen = SDL_SetVideoMode(WINDOW_WIDTH, WINDOW_HEIGHT, 0, 0); //Create window frame

    SDL_EnableKeyRepeat(70, 70); //Keyboard Repeat

    temp   = SDL_LoadBMP("sprite.bmp"); //Load the actual sprite
    sprite = SDL_DisplayFormat(temp);
    SDL_FreeSurface(temp);

    /* setup sprite colorkey and turn on RLE */
    colorkey = SDL_MapRGB(screen->format, 160, 136, 128); //Make this RGB color transparent, so sprite isn't surrounded by a colored box
    SDL_SetColorKey(sprite, SDL_SRCCOLORKEY | SDL_RLEACCEL, colorkey);

    spriteRect.x = 150; //Initial X Position
    spriteRect.y = 150; //Initial Y Position
    animRect.x = 150;
    animRect.y = 150;

    /* set animation frame */
    srcRect.x = 0;
    srcRect.y = 0;
    srcRect.w = SPRITE_SIZE;
    srcRect.h = SPRITE_SIZE;

    /* initialize bullet */
    for(int i=0; i<Bullet_No; i++) {
        bullet[i].alive = 0;
        bullet[i].w = bullet[i].h = 5 ; // Bullet Size Configuration
    }

    gameover = 0;

    /* message pump */
    while (!gameover)
    {
        SDL_Event event;

        /* look for an event */
        getInput(event);

        if(bKeyA == 1 && bKeyATick%10 == 1) {
            for(int i=0;i<Bullet_No;i++) if(!bullet[i].alive) {
                bullet[i].alive = 1;
                bullet[i].b.x = animRect.x + 6 ;
                bullet[i].b.y = animRect.y + 3 ;
                break; // break this for( ) loop
            }
        } // if(bKeyA == 1 && bKeyATick%10 == 1) { END
        for(int i=0; i<Bullet_No; i++) if(bullet[i].alive) {
            bullet[i].b.x += 5;
            bullet[i].b.w = bullet[i].w;
            bullet[i].b.h = bullet[i].h;
            SDL_FillRect(screen , &bullet[i].b , 0xFFFF66);
            if(bullet[i].b.x > 380) bullet[i].alive = 0; // Bullet Destroy condition
        }

        if(bKeyA) bKeyATick++; // Press KeyA counter + 1
        if(!bKeyA) bKeyATick=0; // Release KeyA counter = 0

        /* collide with edges of screen */
        if (spriteRect.x <= 0)
            spriteRect.x = 0;
        if (spriteRect.x >= WINDOW_WIDTH - SPRITE_SIZE)
            spriteRect.x = WINDOW_WIDTH - SPRITE_SIZE;

        if (spriteRect.y <= 0)
            spriteRect.y = 0;
        if (spriteRect.y >= WINDOW_HEIGHT - SPRITE_SIZE)
            spriteRect.y = WINDOW_HEIGHT - SPRITE_SIZE;

        SDL_BlitSurface(sprite, &srcRect, screen, &spriteRect);
        SDL_UpdateRect(screen, 0, 0, 0, 0); //Update screen with new sprite
        SDL_FillRect(screen, NULL, 0x000000);
    }

    /* clean up */
    SDL_FreeSurface(sprite);
    SDL_Quit();

    return 0;
}