Allegro Programming Tutorial, by Richard G Baldwin

The animation loop

Listing 5 calls the srand function and the rand function:

To establish a random initial direction for the ball.

Listing 5. The animation loop.

//Seed the random number generator and set the initial // direction based on a random number. srand (time(NULL)); dir = rand() % 4; //Loop until the user presses the Esc key. while( !key[KEY_ESC]){ moveBall(); }//end while loop return 0; }//end main END_OF_MAIN();