Scripting About
From OpenSimulator
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| + | == About OpenSim scripting == | ||
An important ingredience in Second Life is scripting. It is the engine that drives it all.<br /> | An important ingredience in Second Life is scripting. It is the engine that drives it all.<br /> | ||
In SL [http://wiki.secondlife.com/wiki/LSL_Portal LSL (Linden Scripting Language)] is the language you have to use. This language has its limitations, and is executed very slowly. But nevertheless it works and it gets the job done.<br /> | In SL [http://wiki.secondlife.com/wiki/LSL_Portal LSL (Linden Scripting Language)] is the language you have to use. This language has its limitations, and is executed very slowly. But nevertheless it works and it gets the job done.<br /> | ||
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OpenSim supports LSL and C# scripts. But with limitations:<br /> | OpenSim supports LSL and C# scripts. But with limitations:<br /> | ||
| − | * Not all commands and events has been implemented. See [[ | + | * Not all commands and events has been implemented. See [[llFunction implementation status]] for details on what commands work and not. |
* Scripts that are running can not cross regions. | * Scripts that are running can not cross regions. | ||
* You can not use loops inside your scripts. Actually you can use loops, but it will block other scripts from executing. | * You can not use loops inside your scripts. Actually you can use loops, but it will block other scripts from executing. | ||
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The ScriptEngine is being developed by many developers. If you want to contribute, have a look at the [[OpenSim.Region.ScriptEngine]] page.<br /> | The ScriptEngine is being developed by many developers. If you want to contribute, have a look at the [[OpenSim.Region.ScriptEngine]] page.<br /> | ||
A blog with development status can be found at [http://teddmaa.blogspot.com/ http://teddmaa.blogspot.com/].<br /> | A blog with development status can be found at [http://teddmaa.blogspot.com/ http://teddmaa.blogspot.com/].<br /> | ||
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| + | == How to script == | ||
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| + | Have a look at the [http://wiki.secondlife.com/wiki/LSL_Portal LSL wiki] to learn LSL.<br /> | ||
| + | The current procedure to get a script working in OpenSim is: | ||
| + | * Create a new script in inventory. | ||
| + | * Write whatever script you want there. Check [[llFunction implementation status]] for what commands that is supported. | ||
| + | * Drag the script over to an object. | ||
| + | * Delete the script from the object to deactivate script. | ||
| + | <br /> | ||
| + | There are still some defects: | ||
| + | * You can not edit script while it is inside object. | ||
| + | * When restarting OpenSim server scripts are lost and not started. | ||
| + | * Line numbers in error messages may miss by 1 or 2 lines. | ||
Revision as of 08:34, 29 August 2007
About OpenSim scripting
An important ingredience in Second Life is scripting. It is the engine that drives it all.
In SL LSL (Linden Scripting Language) is the language you have to use. This language has its limitations, and is executed very slowly. But nevertheless it works and it gets the job done.
Linden Labs are planning to move LSL scripting over to C# on Mono some time in the future. This has been in the works since 2005 at least. There are many difficult technical challenges related to this.
OpenSim supports LSL and C# scripts. But with limitations:
- Not all commands and events has been implemented. See llFunction implementation status for details on what commands work and not.
- Scripts that are running can not cross regions.
- You can not use loops inside your scripts. Actually you can use loops, but it will block other scripts from executing.
The OpenSim script engine compiles the LSL code down to .Net code that is JIT'ed to CPU native gode. In effect this means that a LSL script in OpenSim performing pure mathematical functions will have speed close to a C++ program. Of course normally you don't do much math, but still speed should be ok.
The ScriptEngine is being developed by many developers. If you want to contribute, have a look at the OpenSim.Region.ScriptEngine page.
A blog with development status can be found at http://teddmaa.blogspot.com/.
How to script
Have a look at the LSL wiki to learn LSL.
The current procedure to get a script working in OpenSim is:
- Create a new script in inventory.
- Write whatever script you want there. Check llFunction implementation status for what commands that is supported.
- Drag the script over to an object.
- Delete the script from the object to deactivate script.
There are still some defects:
- You can not edit script while it is inside object.
- When restarting OpenSim server scripts are lost and not started.
- Line numbers in error messages may miss by 1 or 2 lines.
