Bouncing ball, angle problem

Anyone ever made a basic breakout type game.

4 walls, 1 paddle, and a ball with ball behaviour.

Sometimes the ball can get stuck in a sort of side to side loop as shown in the pic.

Could somebody tell me how to stop this happening ?

<img src="http://dl.dropbox.com/u/22173473/breakout.png" border="0" />

These are my settings for the ball:

Randomness          20

Bounce friction    off

Rotate object       off

Bounc off solids yes

Rotation              N angles

Rotation count     8

I did a search, but the links to the example files dont work.

Maybe add a random value to the ball.y when the ball.y before impact is the same after impact with a wall, if you get my drift.

I seem to remember such games as Arkanoid would sometimes do the same but would then veer off after a certain number of bounces.

Maybe add a random value to the ball.y when the ball.y before impact is the same after impact with a wall, if you get my drift.

I seem to remember such games as Arkanoid would sometimes do the same but would then veer off after a certain number of bounces.

Good idea...I just added the following and it works ok:

+ ball5: On collision between ball5 and wall

+ ball5: Angle Less than 14

+ ball5: Angle Greater than 346

   -> ball5: Set angle to ball5.Angle-20

+ ball5: On collision between ball5 and wall

+ ball5: Angle Less than 194

+ ball5: Angle Greater than 166

-> ball5: Set angle to ball5.Angle-20

Thanks zenox98