void clean_body(struct body *b)
{
struct body *rest = NULL;
if (b) {
rest = b->rest;
free(b->part);
clean_body(rest);
}
}
/* Reset Player Data */
void player_data(void)
{
config.snake_status = LIVE;
snake_pos[HEAD][POS_X] = DEFAULT_X;
snake_pos[HEAD][POS_Y] = DEFAULT_Y;
create_apple();
clean_body();
config.count = 0;
config.points_user = 0;
config.snake_direction = WE;
config.game_level = N3;
}
int main(int argc, char *argv[])
{
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) != 0) {
fprintf(stderr, "Unable to initialize SDL: %s\n", SDL_GetError());
SDL_Quit();
return -1;
}
SDL_Window *win = SDL_CreateWindow("snake", 50, 50, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_OPENGL);
if (!win) {
fprintf(stderr, "Unable to initialize window: %s\n", SDL_GetError());
SDL_Quit();
return -1;
}
SDL_GLContext gl_con = SDL_GL_CreateContext(win);
struct square *head = make_square(0, 0, TILE, brown);
struct square *fruit = make_square(0, 0, TILE, red);
if (!head || !fruit) {
fprintf(stderr, "Unable to allocate memory for square struct.");
if (head) {
free(head);
}
}
struct body *snake_body = NULL;
reposition_fruit(fruit);
enum direction snake_d = LEFT;
int previousx;
int previousy;
if (gl_con == NULL) {
fprintf(stderr, "Unable to initialize gl context: %s\n", SDL_GetError());
SDL_DestroyWindow(win);
SDL_Quit();
return -1;
}
SDL_Event event;
while (1) {
while (SDL_PollEvent(&event)) {
if (event.type == SDL_QUIT) {
goto end;
}
else if (event.type == SDL_KEYDOWN) {
switch (event.key.keysym.sym) {
case SDLK_ESCAPE:
goto end;
break;
case SDLK_UP:
snake_d = UP;
break;
case SDLK_DOWN:
snake_d = DOWN;
break;
case SDLK_LEFT:
snake_d = LEFT;
break;
case SDLK_RIGHT:
snake_d = RIGHT;
break;
}
}
}
previousx = head->x;
previousy = head->y;
switch (snake_d) {
case UP:
head->y += TILE;
break;
case DOWN:
head->y -= TILE;
break;
case LEFT:
head->x -= TILE;
break;
case RIGHT:
head->x += TILE;
break;
}
if (is_intersect_body(head, snake_body)) {
goto end;
}
step_body(&snake_body, previousx, previousy);
if (head->y > SCREEN_HEIGHT - TILE || head->y < -1 * SCREEN_HEIGHT || head->x > SCREEN_WIDTH - TILE || head->x < -1 * SCREEN_WIDTH) {
goto end;
}
else if (is_intersect(head, fruit)) {
add_body(&snake_body, previousx, previousy);
do {
reposition_fruit(fruit);
} while (is_intersect(head, fruit) || is_intersect_body(fruit, snake_body));
}
cap_game_fps(display, win, head, snake_body, fruit);
}
end:
free(head);
clean_body(snake_body);
free(fruit);
SDL_GL_DeleteContext(gl_con);
SDL_Quit();
return 0;
}
