umm... i want to animate a bitmap according to what key the user is pressing. But when I use no clear screen functions the old bitmap is left behind. When I use a clear screen function then it is really sketchy. I used man different types of clear screen such as clear_to_color etc. I am not sure what I am doing wrong. Oh and I am using the allegro library with Dev C++ and windows 98 (if that matters)
Code:#include <allegro.h> int main() { allegro_init(); set_gfx_mode(GFX_SAFE, 640, 480, 0, 0); set_color_depth(16); // Set the color depth install_keyboard(); BITMAP *pic; pic = load_bitmap("plane.bmp", NULL); // Load our picture int x=0, y=0; acquire_screen(); while(!key[KEY_ESC]) {if (key[KEY_UP]) {y++;} if (key[KEY_DOWN]) {y--;} clear_bitmap(screen); for (int i=0 ; i < 1; i++) { clear_bitmap(screen); vsync(); blit(pic, screen, x, y, 0, 0, 640, 480); } } release_screen(); destroy_bitmap(pic);//Release the bitmap data allegro_exit(); return 0; } END_OF_MAIN();
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