mirror of
https://git.code.sf.net/p/quake/quakeforge
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Checked GIB documentation in CVS.
This commit is contained in:
Brian Koropoff
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
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<!-- ================================================================================ -->
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<!-- This HTML file was created by AbiWord. -->
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<!-- AbiWord is a free, Open Source word processor. -->
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<!-- You may obtain more information about AbiWord at www.abisource.com -->
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<!-- ================================================================================ -->
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8" >
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<title>/home/snax/source/quakeforge/doc/gib.html</title>
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<style type="text/css">
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body
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{
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color: #000000;
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background-color: #ffffff;
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}
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@media print
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{
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body
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{
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padding-top: 1in; padding-bottom: 1in;
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}
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}
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p, .Normal
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{
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font-family: "Times New Roman";
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margin-top: 0pt;
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font-variant: normal;
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margin-left: 0pt;
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text-indent: 0in;
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widows: 2;
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font-style: normal;
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font-weight: normal;
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text-decoration: none;
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color: #000000;
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margin-bottom: 0pt;
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margin-right: 0pt;
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font-size: 12pt;
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font-stretch: normal;
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}
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</style>
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</head>
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<body><div>
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<p style="text-align: center"><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 20.000000pt">GIB Mark III Reference</span></p>
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<p style="text-align: center"><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 20.000000pt">Beta version</span></p>
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<p><br>
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</p>
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<p><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 16.000000pt">Basic Syntax</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">The syntax of GIB is mostly similar to the normal quake console:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">command arg1 arg2 arg3 ...</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">However, there are a few differences when it comes to characters that surround tokens. Double quotes work as you would expect:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">echo "Hello, world!"</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">No processing is done to text inside double quotes. If you want to use variables or function return values, you shouldn't use double quotes. Within double quotes you may now use escape characters. As of now, this allows you to use \" in place of a double quote and \n in place of the newline character.</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">echo "This token has two \"quotes\" and\na newline."</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">In addition to double quotes, you may now use curly braces to surround tokens. Curly braces have one unique feature: you may have line breaks within them:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">echo {This token</span></p>
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<p><span style="font-family: 'Courier'">has several</span></p>
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<p><span style="font-family: 'Courier'">lines}</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">This is most useful with functions, loops, and if statements. As with double quotes, no processing is done inside curly braces. The final type of token is one surrounded by parentheses. These enclose math expressions that will be evaluated before the command is executed:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">echo (5*5-(1/(2+1)))</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">See the section on the math evaluator for more information.</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">Sometimes you will want to be able to combine tokens of different types into one token. For instance, it might be useful to include a math expression inside a string that will be displayed. You can use a comma (,) between two token to concatenate them:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">echo "5 times 5 is ", (5*5), "."</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">GIB is fairly anal about malformed commands. Unmatched braces, parentheses, and double quotes will generate errors and halt execution of your program.</span></p>
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<p><br>
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</p>
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<p><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 16.000000pt">Variables</span></p>
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<p><br>
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</p>
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<p><span style="text-decoration: underline; font-family: 'Times New Roman'">Types</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">There are three types of variables in GIB: local, global, and console. Local variables are visible only to the current function and are destroyed when that function completes. Global variables are visible to all GIB functions and are never destroyed. Console variables are not strictly part of GIB but can be manipulated and used by it.</span></p>
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<p><br>
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</p>
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<p><span style="text-decoration: underline; font-family: 'Times New Roman'">Structure</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">Local and global variables differ from console variables in that they can be trees. For instance, the following would all be part of the same variable:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">foobar</span></p>
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<p><span style="font-family: 'Courier'">foobar.1</span></p>
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<p><span style="font-family: 'Courier'">foobar.2</span></p>
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<p><span style="font-family: 'Courier'">foobar.2.string</span></p>
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<p><span style="font-family: 'Courier'">foobar.3.string</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">If a variable is global, all branches of that variable are automatically global as well.</span></p>
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<p><br>
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</p>
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<p><span style="text-decoration: underline; font-family: 'Times New Roman'">Substitution</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">Any place outside quotes, the following patterns will be replaced with the value of the variable they specify:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">$variable</span></p>
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<p><span style="font-family: 'Courier'">${variable}</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">In the first example, the end of a variable name is considered to be the first non-alphanumeric, non-underline character, for instance:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">$var1*$var2</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">would be two different variables with a * between them</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">In the second example, everything within the braces ({ and }) is considered part of the variable name. Braces MUST be used when substituting branches of variables:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">${variable.branch.anotherbranch}</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">This makes assignment dynamically to a branch less cumbersome, because periods in variable names won't automatically get swallowed. Variables can act as pointers to another variable by containing their name. You can then access the named variable indirectly through the pointer:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">$$pointer</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">You can use this to dynamically access branches as well:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">${variable.$i.string}</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">You may trim the value of a variable down into a certain range of characters. For instance:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">$variable[2:5]</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">Will give you characters 2 through 5 of the variable. Characters start at 0. If you try to access characters outside the length of the variable, it will be clipped to the end of the variable. A negative number counts backwards from the end of the variable, so -1 would mean the second from last character, -2 the third from the last, and so on. To specify the last character, use a colon but don't specify a second number. </span><span style="text-position: ; color:#000000; font-family: 'Arial'; font-size: 12.000000pt">If you only want one character, you can omit the colon and second number. </span><span style="font-family: 'Arial'">Consider these examples:</span></p>
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<p><br>
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<p><span style="font-family: 'Courier'">h = "hello"</span></p>
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<p><span style="font-family: 'Courier'">echo $h[0:1] // Prints "he"</span></p>
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<p><span style="font-family: 'Courier'">echo $h[:2] // Prints "hel"</span></p>
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<p><span style="font-family: 'Courier'">echo $h[2:] // Prints "llo"</span></p>
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<p><span style="font-family: 'Courier'">echo $h[1:-1] // Prints "ell"</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">Here is one thing that will not work:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">${variable.$var[0:1].string} // Indexing only works at the top level</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">Variables will be checked in this order when substituting: Local, global, console.</span></p>
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<p><br>
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</p>
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<p><span style="text-decoration: underline; font-family: 'Times New Roman'">Assignment</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">You assign to a GIB variable using the syntax:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">variable = value</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">Assigning to a branch is simple:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">variable.branch = value</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">If you want to dynamically assign to a branch, you can use:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">variable.$i.string = value</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">where the variable i contains the name of the branch to assign to. Note that if the period after $i were considered to be part of the variable name, this wouldn't work. The number and level of branches is theoretically unlimited.</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">When assigning to a variable that doesn't exist, it is automatically created as a local. If a local already exists, it is assigned to. If a global already exists, it is assigned to. If both a local and global exist with the same name, the local is assigned to. You should declare your globals in the main body of your GIB script with the following syntax:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">global varname</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">This ensures that the variable and all branches used later on will be persistent across different functions.</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">If you can't be certain that a variable you want to use as a local doesn't already exist as a global, you can use the following at the start of your functions:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'">local varname</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'">This will ensure that all further operations on that variable will use a local version. You will be sharing a namespace with any other loaded GIB scripts, so this is advised. On the other hand, it is bad practice to use common variable names such as i as globals. Consider created a single global variable with the name of your script and using branches of it to store global data.</span></p>
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<p><br>
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</p>
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<p><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 16.000000pt">Functions</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Functions are like aliases of the normal quake console, with several differences:</span></p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">- They execute in a new context</span></p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">- They can take arguments</span></p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">- They can return values</span></p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">- They are normally not usable from the console.</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">You declare a function as follows:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt">function name program</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">In general, you will want to write functions like this:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt">function test {</span></p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> echo "Hello, world!"</span></p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt">}</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">A function gets its own set of local variables whenever it is executed. Each instance of a function gets a unique set. When a function is executed, several local variables are set up for it. These are argc, the number of arguments the function was called with, and the numbers 0 through argc-1, each containing and argument. Argument 0 is the name of the function. Therefore, even a function called with no arguments will get an argc of 1. Consider the following example:</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt">function test2 {</span></p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> echo "The name of this function is ", $0</span></p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> echo "My first argument is ", $1</span></p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt">}</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">You can use a "pointer" variable and argc to easily examine each argument passed to a function. The following function prints each argument passed to it on a separate line:</span></p>
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<p><br>
|
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</p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt">function printargs {</span></p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> local i</span></p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> i = 1</span></p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> while ($i < $argc) {</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> echo $$i</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> i = ($i + 1)</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> }</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">}</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Functions can return a value to whatever called them at any time. The syntax for return is as follows:</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">return value</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">If you omit the value, the function will cease execution but will not return anything. Attempting to return a value where it isn't wanted (to a non-GIB buffer, or to a buffer that has not requested a return value, or at the top of the execution stack) will result in a warning, but execution will proceed as usual. In order to use the return value of a function, you must substitute it into your command using backticks (` `). This key is usually found above the tab key on most keyboards. It usually is the same key with ~ on it. Consider this example:</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">function hello {</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> return "Hello, world!"</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">}</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">echo `hello`</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">The function within the backticks is run, and the return value is substituted in its place. This example would result in "Hello, world!" being printed. Some built-in GIB commands can return values; backticks can be used with these as well. Using backticks with something that does not result in a return value will cause an error.</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Normally, GIB functions can only be called from other GIB functions. However, the export command can be used to make a GIB function available to the console:</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">function test {</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> echo "Testing 1 2 3..."</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">}</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">export test</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">The ideal GIB script will export several functions for use in binds or at the console and keep the rest unexported as support functions. This reduces namespace pollution.</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 16.000000pt">Flow control</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Several GIB commands are available for controlling the flow of a GIB program:</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">while</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">usage: </span><span style="font-family: 'Courier'; font-size: 12.000000pt">while condition program</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">example:</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">i = 0</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">while ($i < 10) {</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> i = ($i + 1)</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">}</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">notes: While the condition statement evaluates to a non-zero number, the program will be continuously executed. You can use the break command at any time inside a loop to end the loop prematurely.</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">for</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">usage: </span><span style="font-family: 'Courier'; font-size: 12.000000pt">for variable in list program</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">example:</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">for i in "</span><span style="font-family: 'Courier'; font-size: 12.000000pt">1 2 3 4 5"</span><span style="font-family: 'Courier'; font-size: 12.000000pt"> {</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> echo $i</span><span style="font-family: 'Courier'; font-size: 12.000000pt">, "</span><span style="font-family: 'Courier'; font-size: 12.000000pt"> </span><span style="font-family: 'Courier'; font-size: 12.000000pt">times 2 is</span><span style="font-family: 'Courier'; font-size: 12.000000pt"> ", </span><span style="font-family: 'Courier'; font-size: 12.000000pt">($i * 2)</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">}</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">notes: </span><span style="font-family: 'Arial'; font-size: 12.000000pt">"</span><span style="font-family: 'Arial'; font-size: 12.000000pt">for</span><span style="font-family: 'Arial'; font-size: 12.000000pt">"</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> iter</span><span style="font-family: 'Arial'; font-size: 12.000000pt">ates a </span><span style="font-family: 'Arial'; font-size: 12.000000pt">local variable through each whitespace-separated token </span><span style="font-family: 'Arial'; font-size: 12.000000pt">of a list. </span><span style="font-family: 'Arial'; font-size: 12.000000pt">To achi</span><span style="font-family: 'Arial'; font-size: 12.000000pt">eve this, the internal command </span><span style="font-family: 'Arial'; font-size: 12.000000pt">"</span><span style="font-family: 'Arial'; font-size: 12.000000pt">__for</span><span style="font-family: 'Arial'; font-size: 12.000000pt">"</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> is used </span><span style="font-family: 'Arial'; font-size: 12.000000pt">at the start of each iteration. Manual use of this command is highly discouraged.</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">if/ifnot</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">usage: </span><span style="font-family: 'Courier'; font-size: 12.000000pt">if condition program [else program2]</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">example:</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">if $var1 {</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> echo "Var1 is true."</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">}</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">if $var1 {</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> echo "Var1 is true."</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">} else {</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> echo "Var1 is false."</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">}</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">if $var1 {</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> echo "Var1 is true."</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">} else if $var2 {</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> echo "Var2 is true."</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">} else {</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"> echo "Var1 and var2 are false."</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">}</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">notes: </span><span style="font-family: 'Courier'; font-size: 12.000000pt">if</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> executes </span><span style="font-family: 'Courier'; font-size: 12.000000pt">program </span><span style="font-family: 'Arial'; font-size: 12.000000pt">when condition evaluates to a non-zero number (true). If the condition is false but else and a second program are present, it will be executed instead. </span><span style="font-family: 'Courier'; font-size: 12.000000pt">If-else</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> statements can be chained together. If </span><span style="font-family: 'Courier'; font-size: 12.000000pt">ifnot</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> is used instead of </span><span style="font-family: 'Courier'; font-size: 12.000000pt">if</span><span style="font-family: 'Arial'; font-size: 12.000000pt">,</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> the first program will be executed if the statement is false and the second if the statement is true.</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 16.000000pt">Math Evaluator</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">The math evaluator supports common arithmetic and logical operators and respects order of operations.</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">! Unary not</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">** Exponent</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">/ Division</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">- Unary negation (to get negative numbers)</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">* Multiplication</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">+ Addition</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">- Subtraction</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">== Equality test</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">!= Not-equal test</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">>= Greater-than-or-equal-to test</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">> Greater-then test</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt"><= Less-than-or-equal-to test</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">< Less-than test</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">|| Logical or</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">&& Logical and</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Operations will be performed starting at the top of the list and moving down. In addition to binary and unary operators, several functions are available:</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">sin Sine</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">cos Cosine</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">tan Tangent</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">asin Inverse (arc) sine</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">acos Inverse (arc) cosine</span></p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">atan Inverse (arc) tangent</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">A function should be used as follows:</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">echo "Twice the sin of 5 radians is ", (2 * sin (5)), "."</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Note that all trigonometric functions operate in radians.</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 16.000000pt">File </span><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 16.000000pt">access</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">GIB prov</span><span style="font-family: 'Arial'; font-size: 12.000000pt">ides r</span><span style="font-family: 'Arial'; font-size: 12.000000pt">udimentary </span><span style="font-family: 'Arial'; font-size: 12.000000pt">file </span><span style="font-family: 'Arial'; font-size: 12.000000pt">access t</span><span style="font-family: 'Arial'; font-size: 12.000000pt">o the current game directory</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> (the direc</span><span style="font-family: 'Arial'; font-size: 12.000000pt">tory where the currently-loaded mod resides,</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> determined by the console variable gamedir</span><span style="font-family: 'Arial'; font-size: 12.000000pt">).</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> All subdirector</span><span style="font-family: 'Arial'; font-size: 12.000000pt">ies of</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> the </span><span style="font-family: 'Arial'; font-size: 12.000000pt">current game</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> directory</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> are accessible, </span><span style="font-family: 'Arial'; font-size: 12.000000pt">but </span><span style="font-family: 'Arial'; font-size: 12.000000pt">attempts to escape </span><span style="font-family: 'Arial'; font-size: 12.000000pt">higher into the file</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> </span><span style="font-family: 'Arial'; font-size: 12.000000pt">system via </span><span style="font-family: 'Arial'; font-size: 12.000000pt">"</span><span style="font-family: 'Arial'; font-size: 12.000000pt">..</span><span style="font-family: 'Arial'; font-size: 12.000000pt">"</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> will cause an access error.</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">file.read</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">usage: </span><span style="font-family: 'Courier'; font-size: 12.000000pt">file.read file</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Returns the contents of </span><span style="font-family: 'Courier'; font-size: 12.000000pt">file</span><span style="font-family: 'Arial'; font-size: 12.000000pt">.</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">file.write</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">usage: </span><span style="font-family: 'Courier'; font-size: 12.000000pt">file.write file con</span><span style="font-family: 'Courier'; font-size: 12.000000pt">tents</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Creates/overwrites </span><span style="font-family: 'Courier'; font-size: 12.000000pt">file</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> with </span><span style="font-family: 'Courier'; font-size: 12.000000pt">con</span><span style="font-family: 'Courier'; font-size: 12.000000pt">tents</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">fil</span><span style="font-family: 'Courier'; font-size: 12.000000pt">e.find</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">usage</span><span style="font-family: 'Arial'; font-size: 12.000000pt">:</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> </span><span style="font-family: 'Courier'; font-size: 12.000000pt">file.find glob</span><span style="font-family: 'Courier'; font-size: 12.000000pt"> [</span><span style="font-family: 'Courier'; font-size: 12.000000pt">subdir]</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Returns a list suitable for use </span><span style="font-family: 'Arial'; font-size: 12.000000pt">in a for loop of all files in the current game</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> </span><span style="font-family: 'Arial'; font-size: 12.000000pt">dir</span><span style="font-family: 'Arial'; font-size: 12.000000pt">ectory</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> that match</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> </span><span style="font-family: 'Courier'; font-size: 12.000000pt">glob</span><span style="font-family: 'Arial'; font-size: 12.000000pt">. "*.cfg" and "fi</span><span style="font-family: 'Arial'; font-size: 12.000000pt">le???.foo" are examples of globs. If the </span><span style="font-family: 'Arial'; font-size: 12.000000pt">optional </span><span style="font-family: 'Courier'; font-size: 12.000000pt">subdir </span><span style="font-family: 'Arial'; font-size: 12.000000pt">argument is provided, that directory will be searched instead of the </span><span style="font-family: 'Arial'; font-size: 12.000000pt">root game directory.</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 16.000000pt">Threads</span><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 16.000000pt"> and callbacks</span></p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Threads are </span><span style="font-family: 'Arial'; font-size: 12.000000pt">highly e</span><span style="font-family: 'Arial'; font-size: 12.000000pt">xp</span><span style="font-family: 'Arial'; font-size: 12.000000pt">erimental at this point, and aren't </span><span style="font-family: 'Arial'; font-size: 12.000000pt">true threads in that multitasking is not pre-emptive. Threads must </span><span style="font-family: 'Arial'; font-size: 12.000000pt">issue the wait command</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> to relinquish control to </span><span style="font-family: 'Arial'; font-size: 12.000000pt">the console and other threads.</span></p>
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</p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Callbacks are </span><span style="font-family: 'Arial'; font-size: 12.000000pt">functions register</span><span style="font-family: 'Arial'; font-size: 12.000000pt">ed to be started in a thread when a certain event is triggered in the client or server. Currently, </span><span style="font-family: 'Arial'; font-size: 12.000000pt">only a few</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> events in qw-client </span><span style="font-family: 'Arial'; font-size: 12.000000pt">can have callbacks associated with them, although more will be added.</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> See the events documentation for detai</span><span style="font-family: 'Arial'; font-size: 12.000000pt">ls.</span></p>
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<p><br>
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</p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt">thread.create</span></p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">usage: </span><span style="font-family: 'Courier'; font-size: 12.000000pt">thread.create program</span></p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Creates a new thread containing </span><span style="font-family: 'Courier'; font-size: 12.000000pt">program</span><span style="font-family: 'Arial'; font-size: 12.000000pt">. Ret</span><span style="font-family: 'Arial'; font-size: 12.000000pt">urns a unique</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> ID number that should be </span><span style="font-family: 'Arial'; font-size: 12.000000pt">s</span><span style="font-family: 'Arial'; font-size: 12.000000pt">aved for </span><span style="font-family: 'Arial'; font-size: 12.000000pt">looping threads.</span></p>
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<p><br>
|
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</p>
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt">thread.kill</span></p>
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">usage: </span><span style="font-family: 'Courier'; font-size: 12.000000pt">thread.kill id</span></p>
|
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Immediately ends the thread with </span><span style="font-family: 'Arial'; font-size: 12.000000pt">the ID </span><span style="font-family: 'Courier'; font-size: 12.000000pt">id</span><span style="font-family: 'Arial'; font-size: 12.000000pt">.</span></p>
|
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<p><br>
|
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</p>
|
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<p><br>
|
||||||
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</p>
|
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<p><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 16.000000pt">Miscellaneous </span><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 16.000000pt">b</span><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 16.000000pt">uil</span><span style="font-weight: bold; font-family: 'Times New Roman'; font-size: 16.000000pt">t-in functions</span></p>
|
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<p><br>
|
||||||
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</p>
|
||||||
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt">func</span><span style="font-family: 'Courier'; font-size: 12.000000pt">tion.get</span></p>
|
||||||
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">usage</span><span style="font-family: 'Arial'; font-size: 12.000000pt">:</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> </span><span style="font-family: 'Courier'; font-size: 12.000000pt">function.get function</span></p>
|
||||||
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Retu</span><span style="font-family: 'Arial'; font-size: 12.000000pt">rns the program text of </span><span style="font-family: 'Courier'; font-size: 12.000000pt">function</span><span style="font-family: 'Arial'; font-size: 12.000000pt">.</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
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<p><span style="font-family: 'Courier'; font-size: 12.000000pt">string.equal</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">usage: </span><span style="font-family: 'Courier'; font-size: 12.000000pt">str</span><span style="font-family: 'Courier'; font-size: 12.000000pt">ing.equal string1 string2</span></p>
|
||||||
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<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Returns 1 i</span><span style="font-family: 'Arial'; font-size: 12.000000pt">f the two strings are the same, 0 otherwise.</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">string.length</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">usage: </span><span style="font-family: 'Courier'; font-size: 12.000000pt">string.length string</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Retu</span><span style="font-family: 'Arial'; font-size: 12.000000pt">rns the length of </span><span style="font-family: 'Courier'; font-size: 12.000000pt">string</span><span style="font-family: 'Arial'; font-size: 12.000000pt">.</span></p>
|
||||||
|
<p><br>
|
||||||
|
</p>
|
||||||
|
<p><span style="font-family: 'Courier'; font-size: 12.000000pt">range</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">usage</span><span style="font-family: 'Arial'; font-size: 12.000000pt">: </span><span style="font-family: 'Courier'; font-size: 12.000000pt">range start end </span><span style="font-family: 'Courier'; font-size: 12.000000pt">[</span><span style="font-family: 'Courier'; font-size: 12.000000pt">step</span><span style="font-family: 'Courier'; font-size: 12.000000pt">]</span></p>
|
||||||
|
<p><span style="font-family: 'Arial'; font-size: 12.000000pt">Returns</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> a space-separated list of numbers between </span><span style="font-family: 'Courier'; font-size: 12.000000pt">start</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> and </span><span style="font-family: 'Courier'; font-size: 12.000000pt">end</span><span style="font-family: 'Arial'; font-size: 12.000000pt">. If a step size isn't specified</span><span style="font-family: 'Arial'; font-size: 12.000000pt">, 1 is used. If </span><span style="font-family: 'Arial'; font-size: 12.000000pt">end is less than start a</span><span style="font-family: 'Arial'; font-size: 12.000000pt">nd a custom step siz</span><span style="font-family: 'Arial'; font-size: 12.000000pt">e</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> is specified, it must be negative</span><span style="font-family: 'Arial'; font-size: 12.000000pt">. </span><span style="font-family: 'Courier'; font-size: 12.000000pt">step</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> can</span><span style="font-family: 'Arial'; font-size: 12.000000pt">not be 0 either. This command is </span><span style="font-family: 'Arial'; font-size: 12.000000pt">best used with </span><span style="font-family: 'Courier'; font-size: 12.000000pt">for</span><span style="font-family: 'Arial'; font-size: 12.000000pt"> loops.</span></p>
|
||||||
|
</div>
|
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|
</body>
|
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|
</html>
|
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Reference in a new issue