-/* --- SCROLL TEXT FUNCTION --- */
-
-#define MAX_VEL 10
-#define SPEED_INC 0.01
-#define SCROLL 60
-#define ITEMS_SPACE 4
-
-void SuperTux::display_text_file(const std::string& file, float scroll_speed)
-{
- std::string text;
- std::vector<std::string> names;
-
- LispReader* reader = LispReader::load(datadir + "/" + file, "supertux-text");
-
- if(!reader)
- {
- std::cerr << "Error: Could not open text. Ignoring...\n";
- return;
- }
-
- reader->read_string("text", text, true);
- std::string background_file;
- reader->read_string("background", background_file, true);
- delete reader;
-
- // Split text string lines into a vector
- names.clear();
- unsigned int i, l;
- i = 0;
- while(true)
- {
- l = text.find("\n", i);
-
- if(l == std::string::npos)
- {
- char temp[1024];
- temp[text.copy(temp, text.size() - i, i)] = '\0';
- names.push_back(temp);
- break;
- }
-
- char temp[1024];
- temp[text.copy(temp, l-i, i)] = '\0';
- names.push_back(temp);
-
- i = l+1;
- }
-
- // load background image
- Surface* background = new Surface(datadir + "/images/background/" + background_file, false);
-
- int done = 0;
- float scroll = 0;
- float speed = scroll_speed / 50;
-
- DrawingContext context;
- SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
-
- Uint32 lastticks = SDL_GetTicks();
- while(!done)
- {
- /* in case of input, exit */
- SDL_Event event;
- while(SDL_PollEvent(&event))
- switch(event.type)
- {
- case SDL_KEYDOWN:
- switch(event.key.keysym.sym)
- {
- case SDLK_UP:
- speed -= SPEED_INC;
- break;
- case SDLK_DOWN:
- speed += SPEED_INC;
- break;
- case SDLK_SPACE:
- case SDLK_RETURN:
- if(speed >= 0)
- scroll += SCROLL;
- break;
- case SDLK_ESCAPE:
- done = 1;
- break;
- default:
- break;
- }
- break;
- case SDL_QUIT:
- done = 1;
- break;
- default:
- break;
- }
-
- if(speed > MAX_VEL)
- speed = MAX_VEL;
- else if(speed < -MAX_VEL)
- speed = -MAX_VEL;
-
- /* draw the credits */
- context.draw_surface(background, Vector(0,0), 0);
-
- float y = 0;
- for(size_t i = 0; i < names.size(); i++) {
- if(names[i].size() == 0) {
- y += white_text->get_height() + ITEMS_SPACE;
- continue;
- }
-
- Font* font = 0;
- switch(names[i][0])
- {
- case ' ': font = white_small_text; break;
- case '\t': font = white_text; break;
- case '-': font = white_big_text; break;
- case '*': font = blue_text; break;
- default: font = blue_text; break;
- }
-
- context.draw_text_center(font,
- names[i].substr(1, names[i].size()-1),
- Vector(0, screen->h + y - scroll), LAYER_FOREGROUND1);
- y += font->get_height() + ITEMS_SPACE;
- }
-
- context.do_drawing();
-
- if(screen->h+y-scroll < 0 && 20+screen->h+y-scroll < 0)
- done = 1;
-
- Uint32 ticks = SDL_GetTicks();
- scroll += speed * (ticks - lastticks);
- lastticks = ticks;
- if(scroll < 0)
- scroll = 0;
-
- SDL_Delay(10);
- }
-
- SDL_EnableKeyRepeat(0, 0); // disables key repeating
- delete background;
-}
-