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POPseudo random for procedural generation
 

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  1. POPseudo random for procedural generation
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    <p>I'm making a game with a procedural map, and I'd like to apply this way of doing :</p> <p><a href="http://www.funstormgames.com/blog/2012/09/procedural-island-generation-for-ludum-dare-24/" rel="nofollow noreferrer">Procedural Island Generation</a></p> <p>It's easy to implement and the results are what I'm looking for.</p> <p>The only part I'm stuck with is the part 3, when I have to go around in circles and randomly change water to land, with a higher chance for the water to change into land when it touches a lot of land.</p> <p>I've tried to do like this :</p> <pre><code>if (rand() % 10 &lt; 3 + countAdjacentTile(x, y, LAND)) </code></pre> <p>the countAdjacentTile function just counts the number of tiles marked as the third parameter around the tile specified with the x and y coordinates.</p> <p>So there's still a chance for a water tile to change into a land tile if there's no land around it, and the chances are upper if there is land around.</p> <p>But it gives me this :</p> <p><img src="https://i.stack.imgur.com/olOAs.png" alt="enter image description here"></p> <p>while it gives this on the link I gave earlier :</p> <p><img src="https://i.stack.imgur.com/r7gSB.jpg" alt="enter image description here"></p> <p>I'd like to have the same kind of branches. Do you know the name of an algorithm for this ? I've read this : <a href="http://www.funstormgames.com/blog/wp-content/uploads/2012/08/procedural_island_step_3.jpg" rel="nofollow noreferrer">Exponential Distribution</a> But that's not really talkative for me...</p> <p>Thanks for reading so far.</p>
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    1. COHave you double checked that your `countAdjacentTile` function is returning what you'd expect?
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    2. COYes, I've got the good return values.
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    3. COIf you are using a C++11 compiler you might consider using one of the newer random generators from the `random` header. `rand` isn't the best and mixing it with mod tends to makes it worse.
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      1. USRetired Ninja
 

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