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IDProjectCategoryView StatusDate SubmittedLast Update
0006623opensim[REGION] Script Functionspublic2013-05-06 16:022015-04-29 09:25
Assigned To 
PlatformOperating SystemOperating System Version
Product Versionmaster (dev code) 
Target VersionFixed in Version 
Summary0006623: llCastRay returns incorrect UUID when it collides with a linkset
DescriptionllCastRay is supposed to return the UUID of the linked prim it intersects.
Instead, it is returning the Root Prim UUID of the linkset. It is ONLY supposed to return the root prim UUID if the (RC_DATA_FLAGS, RC_GET_ROOT_PRIM ) arguments are used. This also means that the link number returned (using RC_DATA_FLAGS, RC_GET_LINK_NUM ) is ALWAYS 1.

Steps To Reproducecreate a prim and add the following script.

integer filter= 8;// default is 0
        string ownerName = llKey2Name(llGetOwner());
        llOwnerSay("Hello, " + ownerName + "!");
    touch_start(integer total_number)
        vector start = llGetPos();
        vector end = start - <0.0, 0.0,5.0>;
        llOwnerSay("Filter " + (string)filter + " - Casting ray from : " + (string) start + " to " + (string) end);
        list results = llCastRay(start, end, [RC_REJECT_TYPES, filter, RC_MAX_HITS, 4] );
        integer hitNum = 0;

        while (hitNum < llList2Integer(results, -1))
            // Stride is 2 because we didn't request normals or link numbers
            key uuid = llList2Key(results, 2*hitNum);
            string name = "Land"; // if (uuid == NULL_KEY)
            if (uuid != NULL_KEY)
                name = llKey2Name(uuid);
            llOwnerSay("Hit " + name + "." + llList2String(llGetObjectDetails(uuid,[OBJECT_DESC]),0));

Move the prim to eye level...

Create 4 2x2 meter tiles on the not link them.
Move the test prim over the top of each and touch it... It should spam hit information about the prim beneath it. Move the prim over each of the 4 tiles and note that it correctly reports the prim UUID.

Link the 4 tiles and repeat... you will notice that the root UUID is returned no matter which tile the object is above.

TagsNo tags attached.
Git Revision or version numberOpenSim 0.7.5 Post_Fixes
Run Mode Standalone (Multiple Regions)
Physics EngineODE
Script Engine
EnvironmentMono / Linux64
Mono Version2.10
Attached Files

- Relationships
has duplicate 0007374new llCastRay does not return the UUID of child prims 
related to 0007546closednebadon llCastRay only partly implemented 

-  Notes
There are no notes attached to this issue.

- Issue History
Date Modified Username Field Change
2013-05-06 16:02 dz New Issue
2013-05-06 16:09 dz Git Revision or version number D2 release r22458 => OpenSim 0.7.5 Post_Fixes
2014-11-19 06:39 dz Relationship added has duplicate 0007374
2015-04-29 09:25 Magnuz Relationship added related to 0007546

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