diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/help.c | 71 |
1 files changed, 65 insertions, 6 deletions
@@ -56,6 +56,8 @@ const char *_db_help_text = "they bounce off walls in the opposite direction. To stop, move " "against a wall."; +static int _db_help_quit; + static void _db_help_triangle(SDL_Renderer *renderer, Uint8 r, Uint8 g, Uint8 b, Uint8 a, int x_min, int y_min, int dir) @@ -92,6 +94,7 @@ db_help(void) SDL_Texture *texture; SDL_Rect text_src_rect; SDL_Rect text_dst_rect; + SDL_Event event; font_path = db_strcat(db_get_fonts_dir(), "/UbuntuTitling-Bold.ttf"); @@ -132,10 +135,66 @@ db_help(void) text_dst_rect.w = 592; text_dst_rect.h = 448; - SDL_RenderClear(renderer); - SDL_RenderCopy(renderer, texture, &text_src_rect, &text_dst_rect); - _db_help_triangle(renderer, 0x3F, 0x3F, 0x7F, 0xFF, 608, 16, -1); - _db_help_triangle(renderer, 0x00, 0x00, 0xFF, 0xFF, 608, 456, 1); - SDL_RenderPresent(renderer); - SDL_Delay(1000); + _db_help_quit = 0; + while (SDL_WaitEvent(&event)) { + switch (event.type) { + case SDL_QUIT: + _db_help_quit = 1; + break; + case SDL_KEYDOWN: + switch (event.key.keysym.sym) { + case SDLK_UP: + text_src_rect.y -= 16; + if (text_src_rect.y < 0) { + text_src_rect.y = 0; + } + break; + case SDLK_DOWN: + text_src_rect.y += 16; + if (text_src_rect.y > surface->h + - + text_src_rect.h) + { + text_src_rect.y = + surface->h - + text_src_rect.h; + } + break; + case SDLK_HOME: + text_src_rect.y = 0; + break; + case SDLK_END: + text_src_rect.y = surface->h - + text_src_rect.h; + break; + default: + break; + } + break; + default: + break; + } + if (_db_help_quit == 1) { + break; + } + SDL_SetRenderDrawColor(renderer, 0x7F, 0x7F, 0x7F, 0xFF); + SDL_RenderClear(renderer); + SDL_RenderCopy(renderer, texture, + &text_src_rect, &text_dst_rect); + if (text_src_rect.y > 0) { + _db_help_triangle(renderer, + 0x00, 0x00, 0xFF, 0xFF, 608, 16, -1); + } else { + _db_help_triangle(renderer, + 0x3F, 0x3F, 0x7F, 0xFF, 608, 16, -1); + } + if (text_src_rect.y < surface->h - text_src_rect.h) { + _db_help_triangle(renderer, + 0x00, 0x00, 0xFF, 0xFF, 608, 456, 1); + } else { + _db_help_triangle(renderer, + 0x3F, 0x3F, 0x7F, 0xFF, 608, 456, 1); + } + SDL_RenderPresent(renderer); + } } |