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#include <allegro.h>int main(int argc, char *argv[]) {     int screenx = 1024;    int screeny = 768;    allegro_init();     install_keyboard();    set_color_depth(16);    set_gfx_mode(GFX_AUTODETECT_WINDOWED, screenx,screeny,0,0);        BITMAP *buffer = NULL;    BITMAP *player = NULL;    player = load_bitmap("player.bmp", NULL);    int playerx = 50;    int playery = 50;    int playerangle = 0;	buffer = create_bitmap(screenx,screeny);		while(!key[KEY_ESC])	{		if(key[KEY_RIGHT])		{             playerangle = playerangle + 10;		} 		else if(key[KEY_LEFT])		{             playerangle = playerangle + 10;		}		else if(key[KEY_UP])		{			playery --;		} 		else if(key[KEY_DOWN])		{ 			playery ++; 		}         		blit(buffer, screen, 0,0,0,0,screenx,screeny);		clear_bitmap(buffer);        //draw_sprite(buffer, player, playerx, playery);         rotate_sprite(buffer, player, playerx, playery, playerangle);     	}							destroy_bitmap(player);	destroy_bitmap(buffer);	return 0;} END_OF_MAIN()