53 lines
1.1 KiB
HTML
53 lines
1.1 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<title>Do statement</title>
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<link href="style.css" rel="stylesheet" type="text/css">
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</head>
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<body background="images/back.gif">
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<!--START-->
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<h3>Do statement</h3>
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A do statement has the form
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<p>
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<blockquote>
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<pre><b>do</b> <statement> <b>until</b>(<expression>)</pre>
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</blockquote>
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<p>
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The statement (which can also be a block) is executed until the expression
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is true. The statement is executed at least once. Be careful with your do
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loops. You can easily make them loop forever, in which case your game will
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hang and not react to any user input anymore.
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<p>
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<b>Example</b><br>
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The following program tries to place the current object at a free position
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(this is about the same as the action to move an object to a random
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position).
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<p>
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<blockquote>
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<pre>
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{
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<b>do</b>
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{
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x = random(room_width);
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y = random(room_height);
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}
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<b>until</b> (place_free(x,y))
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}
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</pre>
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</blockquote>
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<!--END-->
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</body>
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</html>
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<!-- KEYWORDS
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do statement
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until
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--> |