orange ball on the red block bouncing game music game bouncy ball on a block

This creates a decay effect causing the bounce to peak at a lower point each time.

We can simulate this by adding a little bit more acceleration to the ball each time it bounces.

This is a nice effect but we know that in real life a ball will go to a lower height each time it bounces due to the loss of energy. But at that point, the game physics changes the direction of acceleration and the ball begins to drop again. It will actually stop at the value of y were it started.

The game physics knows to make the acceleration invert so the ball will slow down as it moves upward. If they have, their velocity is set to negative to make them go back up. Creating the bounceĪ game update interval (the onUpdateInterval function) checks to see if any balls have reached the bottom of the screen. The red and orange balls go faster at 20 and 30 pixels per second. Green balls go slow, 10 pixels per second. The ball is also sent moving left to right at a constant velocity based on the color of the ball. This makes the ball sprite speed up as it drops, simulating the effect of gravity. The value of acceleration chosen for the game is 100 pixels per second, per second. To make the sprite behave like a real ball dropping from above, it begins at the top of the screen with velocity of 0 and is given a value of acceleration in the down direction. Along with a position, we can assign velocity and acceleration to a sprite representing a ball. Using the motion properties of sprites we can simulate the action of a ball or balls bouncing.

Balls move at different speeds so catching a faster ball scores a higher point value. The player scores points for each ball caught. The purpose of the game is to catch the balls in a bucket before they bounce away and leave the screen. This game drops balls onto the screen and makes them bounce while moving left to right.

Orange ball on the red block bouncing game music game bouncy ball on a block