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POHow to utilize a boolean method, which returns more than 2 values
 

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  1. POHow to utilize a boolean method, which returns more than 2 values
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    <p>This method returns true, false, and another value.</p> <pre><code>public boolean Intersection (Circle circle, Rectangle rectangle) { ... // test something ... return true; ... // test another thing ... return false; ... ... return xCornerDistSq + yCornerDistSq &lt;= maxCornerDistSq; //Third return value } </code></pre> <p>This is a 2D game, where a ball is supposed to bounce off of a rectangle, including the edges of the rectangle. The third return value, which I linked above, is supposed to detect collision between the ball and the edges of the rectangle. The problem is, I don't know how to utilize it in my code once I call the method.</p> <p>What I currently have is this</p> <p>This is the full code of the method:</p> <pre><code> public boolean Intersection (Circle circle, Rectangle rectangle) { double cx = Math.abs(circle.getLayoutX() - rectangle.getLayoutX() - rectangle.getWidth() / 2); double xDist = rectangle.getWidth() / 2 + circle.getRadius(); if (cx &gt; xDist) { return false; } double cy = Math.abs(circle.getLayoutY() - rectangle.getLayoutY() - rectangle.getHeight() / 2) ; double yDist = rectangle.getHeight() / 2 + circle.getRadius(); if (cy &gt; yDist) { return false; } if (cx &lt;= rectangle.getWidth() / 2 || cy &lt;= rectangle.getHeight() / 2) { return true; } double xCornerDist = cx - rectangle.getWidth() / 2; double yCornerDist = cy - rectangle.getHeight() / 2; double xCornerDistSq = xCornerDist * xCornerDist; double yCornerDistSq = yCornerDist * yCornerDist; double maxCornerDistSq = circle.getRadius() * circle.getRadius(); return xCornerDistSq + yCornerDistSq &lt;= maxCornerDistSq; } </code></pre> <p>So, how do I go about implementing it when I call the function? I want my ball to bounce off of the edges too, but I don't know how to call it by using this method.</p> <p>What I currently have is this:</p> <pre><code> boolean intersection = Intersection(circle1, rect1); if (intersection == true) { double x = (rect1.getLayoutX() + rect1.getWidth() / 2) - (circle1.getLayoutX() + circle1.getRadius()); double y = (rect1.getLayoutY() + rect1.getHeight() / 2) - (circle1.getLayoutY() + circle1.getRadius()); if (Math.abs(x) &gt; Math.abs(y)) { c1SpeedX = -c1SpeedX; } else { c1SpeedY = -c1SpeedY; } } } } </code></pre>
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    1. PO
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    1. USGregg1989
    1. USGregg1989
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      1. POHow to utilize a boolean method, which returns more than 2 values
      1. USGregg1989
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    1. COTrue, false and maybe? You could write an enum.
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      1. POHow to utilize a boolean method, which returns more than 2 values
      1. USElliott Frisch
    2. COThe code shown _will_ return just two possible values. The last line will return either true or false. If you need to return more than two values, then a different type must be used - `boolean` won't work
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      1. POHow to utilize a boolean method, which returns more than 2 values
      1. USÓscar López
    3. COSorry, no idea how to do that. Can you provide a code example please?
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      1. POHow to utilize a boolean method, which returns more than 2 values
      1. USGregg1989
 

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