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  1. PO
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    <p>To wrap the image, you need to first test whether there's any 'overflow' (ie any parts of the screen where wrapping is required). There are 4 cases: no overflow, x-overflow, y-overflow, x- and y-overflow. </p> <p>Depending on the case, you may then need to <strong>draw additional copies</strong> of your image displaced by 3000px in either x, y or both.</p> <p><img src="https://i.stack.imgur.com/dkYwn.jpg" alt="Two of the four cases..."></p> <p>I've assumed that your (posx,posy) point corresponds to the lower left corner of the screen, and that both screenWidth and screenHeight are less than 3000...</p> <pre><code>// calculate posx and posy, ensuring they lie within 0-2999: int posx = (3000+((int)(Player.x / 20))%3000)%3000; int posy = (3000+((int)(Player.y / 20))%3000)%3000; // test for overflow: boolean xOverflow = (posx+screenWidth &gt; 3000); boolean yOverflow = (posy+screenHeight &gt; 3000); // draw the image: drawMyImage(posx,posy); // if necessary, draw displaced copies: if(xOverflow) drawMyImage(posx-3000,posy); if(yOverflow) drawMyImage(posx,posy-3000); if(xOverflow &amp;&amp; yOverflow) drawMyImage(posx-3000,posy-3000); ... private static void drawMyImage(int x, int y){ int dx1 = Math.max(-x,0); int dy1 = Math.max(-y,0); int dx2 = Math.min(3000-x,screenWidth); int dy2 = Math.min(3000-y,screenHeight); int sx1 = Math.max(x,0); int sy1 = Math.max(y,0); int sx2 = Math.min(x+screenWidth,3000); int sy2 = Math.min(y+screenHeight,3000); g.drawImage(SpaceBGLayer0, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, null, null); } </code></pre> <p>I haven't tested this. You should replace all the <code>3000</code>'s with some variables, such as backgroundWidth and backgroundHeight...</p>
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    1. USRichard Inglis
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