openclonk/docs/sdk/script/fn/Par.xml

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<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!DOCTYPE funcs
SYSTEM '../../../clonk.dtd'>
<?xml-stylesheet type="text/xsl" href="../../../clonk.xsl"?>
<funcs>
<func>
<title>Par</title>
<category>Script</category>
<version>5.1 OC</version>
<syntax>
<rtype>any</rtype>
<params>
<param>
<type>int</type>
<name>index</name>
<desc>0-9: index of the requested parameter</desc>
</param>
</params>
</syntax>
<desc>Returns the value of a parameter passed to the function.</desc>
<remark>In old times, this was the only method to access function parameters. The new script style allows naming of parameters which makes declaration and access much more convenient.</remark>
<examples>
<example>
<code>private func Multiply3(v1, v2, v3)
{
return v1 * v2 * v3;
}</code>
<text>The same function with new style syntax.</text>
<code>private func MultiplyX(cnt)
{
var x = 1;
for(var i = 0; i &lt; cnt; i++)
x *= Par(i + 1);
return x;
}</code>
<text>An example for mixed use of named and indexed parameters: this function can multiply up to 0 numbers. The first parameter is the count of following parameters to be multiplied (e.g. MultiplyX(4, 10, 3, 4, 7) = 10 * 3 * 4 * 7 = 840)</text>
</example>
</examples>
</func>
<author>Sven2</author><date>2002-08</date>
</funcs>