Need help with Brick Breaker game

rajit.garg11

I making this brick breaker game, but sometimes the ball moves either straight up and down or horizontally. This causes the player to be messed up. How do I make a rule that when this happens the ball changes directions?

jamie_c

You need to check the balls linear velocity.X and linear velocity.Y if either are ever exactly equal to zero, you need to change it to another value. So you would set up a rule like this for the side to side check:

Rule:
if Self.Motion.Linear Velocity.X = 0
Change Attribute Self.Motion.Linear Velocity.X to [something else not 0]

For the [something else not 0] you could use the random function to pick a random number so it does not always do the same thing.

Hope that helps.

rajit.garg11

I am making this brick breaker a game where I change scenes to another when it runs out of lives. My code is: if game.lives = 0, change scenes to game over. Somehow this doesn't move to the game over scene and it also freezes the game. Can you please help?

rajit.garg11

This doesn't work for some reason.

Thunder_Child

Are you also including a counter so that they count down to zero?

rajit.garg11

I put in a piece of code where if the ball collides with the bottom game.lives - 1.

jamie_c

You'll have to post an image of your rules for anyone to have any idea why it doesn't work for you.

Braydon_SFX

I'd check to make sure that the lives attribute actually has a value of 0. Sometimes, because of how the code is set up, the attributes can get out of whack and subtract more than one or even skip over a Change Attribute behavior. Use a Display Text behavior and check to make sure that the attribute is set to 0 when you want the scene to change.

Simple debugging, but usually helps find the problem quickly.

tatiang

[Merged threads]

Please don't create multiple threads for the same question.

jamie_c

I've attached a sample file that un-sticks a ball if/when it's stuck on the X or Y axis. It will start stuck on the X axis, when you press the space bar it will un-stick. Anytime it gets stuck again, press the space bar to fix it.

To make this work in a pong game you'd want to use the rules I have set up that are triggered by the space bar, to be triggered when the ball hits a wall or a paddle.

Hope this helps.