[Opensim-dev] ScriptEvents Module

[Diva Canto]

Dahlia, your scenario seems appropriate for this. The module would hook 
on one of the movement events that scene generates.

I'm glad to see Melanie making these real events; it will make the LSL 
code look a little nicer. But independent of the syntax, it's good to 
know what events people would like to get in their scripts. I did those 
two in the example because I needed them. I'll be happy to add more. The 
module is here:
https://github.com/diva/diva-distribution/blob/master/addon-modules/Modules/ScriptEventsModule.cs

Diva


On 11/18/2012 6:48 PM, Dahlia Trimble wrote:
> Hi Diva,
>
> With pathfinding, a NPC has to navigate between virtual "waypoints" 
> along a path to reach a goal. Currently I have a region module that 
> can be queried by scripts and will generate a path that a NPC should 
> be able to follow, then the NPC controller script checks the position 
> of the NPC every 0.5 seconds and makes a decision if a waypoint has 
> been reached or passed and which direction to travel in to reach the 
> next waypoint. One problem I have is that the NPCs don't have a 
> "at_target" event and that the 0.5 second default minimum timer 
> interval is really too long to wait. Another issue is knowing when a 
> NPC has reached a waypoint; it's possible that something may have 
> influenced the NPC's direction and position while travelling to a 
> waypoint and it has deviated from the straight path that was assumed 
> when the path was generated. This becomes especially difficult when 
> navigating around narrow areas with tight corners and many potential 
> obstructions. Ideally I'd like the NPCs to be controlled by scripts 
> but if I could generate events from a region module that the script 
> could process, then the region module could use more complex logic to 
> determine how well a path is being followed and if any corrections are 
> necessary. I've not researched how such events can be passed to a 
> script yet, but if you think this may be a potential application for 
> your event system, I'd like to look into it further and maybe try a 
> few ideas.
>
> -dahlia
>
> On Sun, Nov 18, 2012 at 5:28 PM, Diva Canto <diva at metaverseink.com 
> <mailto:diva at metaverseink.com>> wrote:
>
>     Hi,
>
>     I am working on a module that passes interesting scene events up
>     to the scripts in a manner that's very easy to act upon. An
>     example is attached at the end of this message.
>
>     Question: What other events would people like to grab? The idea is
>     to have the module do all the complicated logic, and pass only
>     simple facts to the scripts.
>
>
>         state_entry()
>         {
>             llSay(0, "Script running");
>             modSendCommand("Script Events", "subscribe|AvatarArrived",
>     llGetKey());
>             modSendCommand("Script Events",
>     "subscribe|LastAvatarLeft", llGetKey());
>         }
>
>         link_message(integer sender_num, integer num, string message,
>     key id)
>         {
>             list parts = llParseString2List(message, ["|"], []);
>             if (llGetListLength(parts) >= 2) {
>                 if (llList2String(parts, 1) == "AvatarArrived") {
>                     // message is: event|AvatarArrived|True or False
>     <-- LocalTeleport or HG Teleport
>                     if (llGetListLength(parts) >= 3) {
>                         if (llList2String(parts, 2) == "True") {
>                             llInstantMessage(id, "Welcome to the
>     Gateway! Choose your destination by walking into one of the
>     teleporters.");
>                             llRegionSay(region_channel, "ports foreign");
>                         } else {
>                             llInstantMessage(id, "Welcome to the
>     Virtual Lab's Gateway! Choose your local destination by walking
>     into one of the teleporters.");
>                             llRegionSay(region_channel, "ports local");
>                         }
>                     } else {
>                         llSay(0, "Malformed message " + message + " "
>     + (string)llGetListLength(parts));
>                     }
>                     play_music();
>                 } else if (llList2String(parts, 1) == "LastAvatarLeft") {
>                     // message is: event|LastAvatarLeft
>                     llRegionSay(region_channel, "ports reset");
>                 }
>             }
>         }
>
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