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POBouncing ball off of paddle in breakout game ~java
 

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  1. POBouncing ball off of paddle in breakout game ~java
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    <p>So I am currently writing a code for a breakout game in java. Right now, I have it set up so that it prompts the player with a dialog box that asks the player how many bricks they want per row (a number between 4 and 40). The part that gets messed up is the whole collision with the ball and the paddle. I'm very new to programming so forgive me if it's incredibly easy. Using dr. Java.</p> <pre><code> //------------------------------- animate ------------------------- /** * this should send the ball back after hitting the paddle. * */ public void animate( ) { int dX = ball.getXLocation( ); int dY = ball.getYLocation( ); while( true ) { ball.move( ); if ( ball.boundsIntersects( paddle) ) { dY= -1*dY; ball.setLocation( dX,dY ); } for(int i = 0; i &lt; bricks.size(); i++) { if (ball.boundsIntersects(bricks.get(i))) { dY = -dY; ball.setLocation(dX,dY); bricks.get(i).hide(); bricks.remove(i); System.out.println("brick"); } </code></pre> <p>}</p> <p>here is the move method from my ball class. Once again sorry for the horrendous code.</p> <pre><code>//------------------------------- move ---------------------------- /** * This will move the ball by deltaX and deltaY * and bounce the ball off the edges of the Frame. * */ public void move( ) { int dX = this.getXLocation( ) + deltaX; int dY = this.getYLocation( ) + deltaY; this.setLocation( dX, dY ); if( getYLocation( ) &lt; 0 ) { setLocation( dX, 0 ); deltaY *=-1; } else if( getYLocation( ) &gt; ( 500 + size ) ) { setLocation( dX, 500-size); deltaY *=-1; } if( getXLocation() &lt; 0 ) { setLocation( dX , dY ); deltaX *=-1; } else if( getXLocation( ) &gt; ( 500 + size ) ) { setLocation( 500-size, dY ); deltaX *=-1; } } </code></pre>
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    1. USuser2938241
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    1. COWelcome to Stack Overflow! The example you posted is very long, making it difficult for us to isolate the exact issue. Could you try trimming it down to a [short, self-contained, correct, compilable example](http://sscce.org/)? Be sure also to check the [question checklist](http://meta.stackexchange.com/questions/156810/stack-overflow-question-checklist) to make sure we have the information needed to help you. Thanks!
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      1. POBouncing ball off of paddle in breakout game ~java
      1. USChristian Ternus
    2. COFor example, Could you just have an example with a ball bouncing on the paddle? The paddle doesn't even have to move.
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      1. POBouncing ball off of paddle in breakout game ~java
      1. USJustin
    3. COCan you explain your logic with using ball.getWidth() in your checkCollision method?
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      1. POBouncing ball off of paddle in breakout game ~java
      1. USJamil Seaidoun
 

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