12/28/2023 0 Comments Lsl write to notecard![]() In this very simple demo, I have flattened a Torus, added a water texture, then added an animation script to move the water texture along the surface of the Torus. ![]() We can add scripts and various animations and special effects to a prim to create some very complex actions and effects. In this tutorial I will not attempt to teach you how to write scripts, (you'll only laugh at me!).īut I will show you how to use existing scripts, and where possible, make some very small adjustments to these existing scripts to customise them for your building needs. This tutorial is targeted at people with little or no experience in writing scripts and code. The Linden Scripting Language, LSL for short, provides the opportunity for objects in SL to be interactive and to interact with the world and people around them. We are also rescued by the invariant that objects cannot have the same name in the inventory which eliminates hash collisions on same names. Since 293 does not equal 289, it deletes 289 such that the description reads:Īs you can see, by XOR-ing with the position of the character in the name of the notecard we can avoid collisions in palindrome cases. In case we now delete the notecard named aab, the script will start to compute the hash of the notecards in the inventory. If we read the baa notecard, the description will now read: If we now add a different notecard, named baa, the dropbox script will update the description to: ![]() After reading, the script will update the description to: Now suppose that we read the notecard by touching the object and requesting it. The script will thus update the description to: This allows us to determine which notecard was deleted because, in case of a deletion, the string in the primitive's description will not have the same hash numbers such that we delete from that string whenever we have a mismatch.įor example, suppose that we drop a notecard named aab into the dropbox. Whenever a notecard is read, we generate that hash and concatenate it in the primitive's description. More precisely, for a notecard named aaac the hash stored will be 296. Secondly, to track "read" notecards, every time a notecard is sent to an agent, we generate a hash of all the characters of the notecard name, using Pedro Oval's Ord function, plus its index in the name. To address the first challenge we use key-value data storage to store a CSV serialized string in the primitive's description, thus making sure that the data is still there after a simulator restart. Secondly, LSL does not report which notecard has been added or deleted - it only triggers the changed event handler and with the INVENTORY_CHANGED flag we can only know that something in the inventory has changed. ![]() Firstly, if we were to use the script memory to store the notecard names and their read status, after a restart that data will be gone. There are some particular challenges to this script.
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