User:Fred Gandt/Tuition - Revision history

Fred Gandt: little bit of cleanup

2017-03-21T12:27:53Z

little bit of cleanup

Fred Gandt: to

2015-08-10T22:41:21Z

← Older revision		Revision as of 15:41, 10 August 2015
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	This first example shows the most basic syntax used to create a function.		This first example shows the most basic syntax used to create a function.

	<~~lsl~~>		<syntaxhighlight lang="lsl2">

	Function() // This is the name we choose for our function. We use the name to call its use.		Function() // This is the name we choose for our function. We use the name to call its use.
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	Function(); // From anywhere the function can be called.		Function(); // From anywhere the function can be called.
	}		}
	}</~~lsl~~>		}</syntaxhighlight>

	So we add the actions we desire within the function braces.		So we add the actions we desire within the function braces.

	<~~lsl~~>		<syntaxhighlight lang="lsl2">

	Function()		Function()
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	Function();		Function();
	}		}
	}</~~lsl~~>		}</syntaxhighlight>

	We can add conditions inside the function and pass to it any type of information.		We can add conditions inside the function and pass to it any type of information.

	<~~lsl~~>		<syntaxhighlight lang="lsl2">

	Function(integer i) // Now the function carries information to be processed.		Function(integer i) // Now the function carries information to be processed.
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	Function(FALSE);		Function(FALSE);
	}		}
	}</~~lsl~~>		}</syntaxhighlight>

	We can give the function a type and have it return the result dependent on what we feed it.		We can give the function a type and have it return the result dependent on what we feed it.

	<~~lsl~~>		<syntaxhighlight lang="lsl2">

	string Function(integer i, integer q)		string Function(integer i, integer q)
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	llOwnerSay(Function(i, q));		llOwnerSay(Function(i, q));
	}		}
	}</~~lsl~~>		}</syntaxhighlight>

	=== [[LSL_Variables \| Scopes and Variables]] ===		=== [[LSL_Variables \| Scopes and Variables]] ===
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	This is to demonstrate where a variable may and may not be referenced within a script. It also demonstrates a basic view of what dictates a ''scope''. A scope is an area within a script that is a parent and/or a child of another area. ''There will be more in-depth explanation as time goes on.''		This is to demonstrate where a variable may and may not be referenced within a script. It also demonstrates a basic view of what dictates a ''scope''. A scope is an area within a script that is a parent and/or a child of another area. ''There will be more in-depth explanation as time goes on.''

	<~~lsl~~>integer global_variable = TRUE; // This variable can be referenced throughout the script (in any state).		<syntaxhighlight lang="lsl2">integer global_variable = TRUE; // This variable can be referenced throughout the script (in any state).

	default		default
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	} // No variable can be referenced outside the scope it was created in.		} // No variable can be referenced outside the scope it was created in.
	}		}
	}</~~lsl~~>		}</syntaxhighlight>

	=== Notes on Order of Operations in Scripts ===		=== Notes on Order of Operations in Scripts ===
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	As a script runs it uses information we give it and information it gets for us. If we instruct the script to get information that we want to use immediately we can use the requesting function in-line like this -		As a script runs it uses information we give it and information it gets for us. If we instruct the script to get information that we want to use immediately we can use the requesting function in-line like this -

	<~~lsl~~>llSetText(llKey2Name(llGetOwner()), <1.0,1.0,1.0>, 1.0);</~~lsl~~>		<syntaxhighlight lang="lsl2">llSetText(llKey2Name(llGetOwner()), <1.0,1.0,1.0>, 1.0);</syntaxhighlight>

	However, some requested information is not acquired at the calling of the function but during the triggering of an associated [[:Category:LSL_Events \| event]]. These events include -		However, some requested information is not acquired at the calling of the function but during the triggering of an associated [[:Category:LSL_Events \| event]]. These events include -

	<~~lsl~~>dataserver		<syntaxhighlight lang="lsl2">dataserver

	http_response		http_response

	run_time_permissions</~~lsl~~>		run_time_permissions</syntaxhighlight>

	...amongst others. When using this type of data requesting function and event setup we need to be careful how we structure our script.		...amongst others. When using this type of data requesting function and event setup we need to be careful how we structure our script.
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	The following is an example of a typical mistake made in scripts (I have fixed scripts SOLD with this error in them).		The following is an example of a typical mistake made in scripts (I have fixed scripts SOLD with this error in them).

	<~~lsl~~>// This script compiles without error but is badly written. It attempts to animate the owner of the script...		<syntaxhighlight lang="lsl2">// This script compiles without error but is badly written. It attempts to animate the owner of the script...
	// ...when the object it is in is touched. But written this way it will fail (the first time it is touched).		// ...when the object it is in is touched. But written this way it will fail (the first time it is touched).

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	// The lesson is that llRequestPermissions does what it says. It requests the perms. It doesn't always get them.		// The lesson is that llRequestPermissions does what it says. It requests the perms. It doesn't always get them.
	// run_time_permissions is where we check what perms we have got and act accordingly.</~~lsl~~>		// run_time_permissions is where we check what perms we have got and act accordingly.</syntaxhighlight>

	So what we need to do is change the order of the function calls and events to something like this -		So what we need to do is change the order of the function calls and events to something like this -

	<~~lsl~~>integer perms;		<syntaxhighlight lang="lsl2">integer perms;

	key owner;		key owner;
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	perms = TRUE; // Yup. Store the result.		perms = TRUE; // Yup. Store the result.
	}		}
	}</~~lsl~~>		}</syntaxhighlight>

	Or this -		Or this -

	<~~lsl~~>string anim = "Dance";		<syntaxhighlight lang="lsl2">string anim = "Dance";

	default		default
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	llStartAnimation(anim); // The animation can begin immediately.		llStartAnimation(anim); // The animation can begin immediately.
	}		}
	}</~~lsl~~>Getting things in the right order is extremely important. I hope this helps.		}</syntaxhighlight>Getting things in the right order is extremely important. I hope this helps.

Fred Gandt: Update to header

2012-11-02T07:37:49Z

Update to header

← Older revision		Revision as of 00:37, 2 November 2012
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	{{RightToc\|right;}}		{{RightToc\|right;}}

	<div style="background-color:#004040;padding:5px;font-size:25px;color:#00ffff;line-height:40px;">~~Due to my PC melting (a while ago) and my stand in being very limited in power,~~ I get in-world ~~vary~~ rarely. The knock-on effect of this, is that I am not in the best position to keep these ~~tutorials~~ updated. Please message me in-world (forwarded to email) if you need help understanding LSL, and I'll do my best to help. Please though, bare in mind that I am quite busy (in RL ~~trying to earn money to replace my PC~~) and may not be able to respond immediately.</div>		<div style="background-color:#004040;padding:5px;font-size:25px;color:#00ffff;line-height:40px;">I get in-world very rarely these days. The knock-on effect of this, is that I am not in the best position to keep these scripts updated. Please message me in-world (forwarded to email) if you discover any bugs (that can't be simply fixed), and I'll do my best to find a solution. Please also message me in-world if you need help understanding LSL, and I'll do my best to help. Please though, bare in mind that I am quite busy (in RL) and may not be able to respond immediately. I try!</div>

	== Some Complete Scripts for Use and Abuse ==		== Some Complete Scripts for Use and Abuse ==

Fred Gandt: /* YouTube Hosted LSL Tutorials */ update youtube link

2012-03-26T21:23:14Z

YouTube Hosted LSL Tutorials: update youtube link

← Older revision		Revision as of 14:23, 26 March 2012
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	== YouTube Hosted LSL Tutorials ==		== YouTube Hosted LSL Tutorials ==

	'''[http://www.youtube.com/~~user/FredGandt#p/c/EFD6404C450D9A0E~~ Full Tutorial Playlist on YouTube]'''		'''[http://www.youtube.com/playlist?list=PLEFD6404C450D9A0E&feature=plcp Full Tutorial Playlist on YouTube]'''

	Introduction to Linden Scripting Language (LSL), the programming language used within Second Life. Absolutely no previous experience with reading or writing any programming language is required. This tutorial (in however many parts it eventually is) is for absolute beginners and, will lead the pupil through from learning how to use the scripting UI (the actual tool we use to write/edit scripts) to them being totally proficient; fully able to design, write, test, develop and complete their own projects.		Introduction to Linden Scripting Language (LSL), the programming language used within Second Life. Absolutely no previous experience with reading or writing any programming language is required. This tutorial (in however many parts it eventually is) is for absolute beginners and, will lead the pupil through from learning how to use the scripting UI (the actual tool we use to write/edit scripts) to them being totally proficient; fully able to design, write, test, develop and complete their own projects.

Fred Gandt: Adding note about current lack of PC to log in-world

2012-03-26T21:20:49Z

Adding note about current lack of PC to log in-world

← Older revision		Revision as of 14:20, 26 March 2012
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	{{RightToc\|right;}}		{{RightToc\|right;}}

			<div style="background-color:#004040;padding:5px;font-size:25px;color:#00ffff;line-height:40px;">Due to my PC melting (a while ago) and my stand in being very limited in power, I get in-world vary rarely. The knock-on effect of this, is that I am not in the best position to keep these tutorials updated. Please message me in-world (forwarded to email) if you need help understanding LSL, and I'll do my best to help. Please though, bare in mind that I am quite busy (in RL trying to earn money to replace my PC) and may not be able to respond immediately.</div>

	== Some Complete Scripts for Use and Abuse ==		== Some Complete Scripts for Use and Abuse ==

Fred Gandt: /* YouTube Hosted LSL Tutorials */ not hosting videos at my site at this time, still on YouTube

2012-01-07T11:20:19Z

YouTube Hosted LSL Tutorials: not hosting videos at my site at this time, still on YouTube

← Older revision		Revision as of 04:20, 7 January 2012
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	'''[http://www.youtube.com/user/FredGandt#p/c/EFD6404C450D9A0E Full Tutorial Playlist on YouTube]'''		'''[http://www.youtube.com/user/FredGandt#p/c/EFD6404C450D9A0E Full Tutorial Playlist on YouTube]'''

	~~'''[https://fredgandt.com/php/lsltutorials.php Also available to watch served by my own web site] (Secure site & a lot less laggy :-))'''~~

	Introduction to Linden Scripting Language (LSL), the programming language used within Second Life. Absolutely no previous experience with reading or writing any programming language is required. This tutorial (in however many parts it eventually is) is for absolute beginners and, will lead the pupil through from learning how to use the scripting UI (the actual tool we use to write/edit scripts) to them being totally proficient; fully able to design, write, test, develop and complete their own projects.		Introduction to Linden Scripting Language (LSL), the programming language used within Second Life. Absolutely no previous experience with reading or writing any programming language is required. This tutorial (in however many parts it eventually is) is for absolute beginners and, will lead the pupil through from learning how to use the scripting UI (the actual tool we use to write/edit scripts) to them being totally proficient; fully able to design, write, test, develop and complete their own projects.

Fred Gandt: /* YouTube Hosted LSL Tutorials */

2011-08-29T03:50:34Z

YouTube Hosted LSL Tutorials

← Older revision		Revision as of 20:50, 28 August 2011
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	== YouTube Hosted LSL Tutorials ==		== YouTube Hosted LSL Tutorials ==

	'''[http://www.youtube.com/user/FredGandt#p/c/EFD6404C450D9A0E Full Tutorial Playlist on YouTube] ~~In Development~~'''		'''[http://www.youtube.com/user/FredGandt#p/c/EFD6404C450D9A0E Full Tutorial Playlist on YouTube]'''

	'''[https://fredgandt.com/php/lsltutorials.php Also available to watch on my own web site]'''		'''[https://fredgandt.com/php/lsltutorials.php Also available to watch served by my own web site] (Secure site & a lot less laggy :-))'''

	Introduction to Linden Scripting Language (LSL), the programming language used within Second Life. Absolutely no previous experience with reading or writing any programming language is required. This tutorial (in however many parts it eventually is) is for absolute beginners and, will lead the pupil through from learning how to use the scripting UI (the actual tool we use to write/edit scripts) to them being totally proficient; fully able to design, write, test, develop and complete their own projects.		Introduction to Linden Scripting Language (LSL), the programming language used within Second Life. Absolutely no previous experience with reading or writing any programming language is required. This tutorial (in however many parts it eventually is) is for absolute beginners and, will lead the pupil through from learning how to use the scripting UI (the actual tool we use to write/edit scripts) to them being totally proficient; fully able to design, write, test, develop and complete their own projects.

Fred Gandt: /* YouTube Hosted LSL Tutorials */ Changing link

2011-08-27T03:28:21Z

YouTube Hosted LSL Tutorials: Changing link

← Older revision		Revision as of 20:28, 26 August 2011
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	'''[http://www.youtube.com/user/FredGandt#p/c/EFD6404C450D9A0E Full Tutorial Playlist on YouTube] In Development'''		'''[http://www.youtube.com/user/FredGandt#p/c/EFD6404C450D9A0E Full Tutorial Playlist on YouTube] In Development'''

	'''[https://fredgandt.com/~~html~~/~~scriptystuff~~.~~html~~ Also available to watch on my own web site]'''		'''[https://fredgandt.com/php/lsltutorials.php Also available to watch on my own web site]'''

	Introduction to Linden Scripting Language (LSL), the programming language used within Second Life. Absolutely no previous experience with reading or writing any programming language is required. This tutorial (in however many parts it eventually is) is for absolute beginners and, will lead the pupil through from learning how to use the scripting UI (the actual tool we use to write/edit scripts) to them being totally proficient; fully able to design, write, test, develop and complete their own projects.		Introduction to Linden Scripting Language (LSL), the programming language used within Second Life. Absolutely no previous experience with reading or writing any programming language is required. This tutorial (in however many parts it eventually is) is for absolute beginners and, will lead the pupil through from learning how to use the scripting UI (the actual tool we use to write/edit scripts) to them being totally proficient; fully able to design, write, test, develop and complete their own projects.

Fred Gandt: /* YouTube Hosted LSL Tutorials */ Added "s"

2011-08-25T02:54:29Z

YouTube Hosted LSL Tutorials: Added "s"

← Older revision		Revision as of 19:54, 24 August 2011
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	'''[http://www.youtube.com/user/FredGandt#p/c/EFD6404C450D9A0E Full Tutorial Playlist on YouTube] In Development'''		'''[http://www.youtube.com/user/FredGandt#p/c/EFD6404C450D9A0E Full Tutorial Playlist on YouTube] In Development'''

	'''[~~http~~://fredgandt.com/html/scriptystuff.html Also available to watch on my own web site]'''		'''[https://fredgandt.com/html/scriptystuff.html Also available to watch on my own web site]'''

	Introduction to Linden Scripting Language (LSL), the programming language used within Second Life. Absolutely no previous experience with reading or writing any programming language is required. This tutorial (in however many parts it eventually is) is for absolute beginners and, will lead the pupil through from learning how to use the scripting UI (the actual tool we use to write/edit scripts) to them being totally proficient; fully able to design, write, test, develop and complete their own projects.		Introduction to Linden Scripting Language (LSL), the programming language used within Second Life. Absolutely no previous experience with reading or writing any programming language is required. This tutorial (in however many parts it eventually is) is for absolute beginners and, will lead the pupil through from learning how to use the scripting UI (the actual tool we use to write/edit scripts) to them being totally proficient; fully able to design, write, test, develop and complete their own projects.

Fred Gandt: /* YouTube Hosted LSL Tutorials */ Fixed link

2011-08-18T22:10:57Z

YouTube Hosted LSL Tutorials: Fixed link

← Older revision		Revision as of 15:10, 18 August 2011
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	'''[http://www.youtube.com/user/FredGandt#p/c/EFD6404C450D9A0E Full Tutorial Playlist on YouTube] In Development'''		'''[http://www.youtube.com/user/FredGandt#p/c/EFD6404C450D9A0E Full Tutorial Playlist on YouTube] In Development'''

	'''[http://fredgandt.com/scriptystuff.html Also available to watch on my own web site]'''		'''[http://fredgandt.com/html/scriptystuff.html Also available to watch on my own web site]'''

	Introduction to Linden Scripting Language (LSL), the programming language used within Second Life. Absolutely no previous experience with reading or writing any programming language is required. This tutorial (in however many parts it eventually is) is for absolute beginners and, will lead the pupil through from learning how to use the scripting UI (the actual tool we use to write/edit scripts) to them being totally proficient; fully able to design, write, test, develop and complete their own projects.		Introduction to Linden Scripting Language (LSL), the programming language used within Second Life. Absolutely no previous experience with reading or writing any programming language is required. This tutorial (in however many parts it eventually is) is for absolute beginners and, will lead the pupil through from learning how to use the scripting UI (the actual tool we use to write/edit scripts) to them being totally proficient; fully able to design, write, test, develop and complete their own projects.