Basic Target Scanner HUD

This single prim HUD is just a button that scrolls through nearby players names, photos and user key. Drop it in a prim and touch the prim and you are set to go. Modify it to suit your particular use in another Hud, weapon, or whatever you want. <3 --Ackley Bing

// Basic Target Scanner HUD
// by Ackley Bing
// v.2.0 now using llGetAgentList() instead of sensor().  Added a missing profile photo texture. fixed a lot of issues.

integer index;
key HUDtarget;
key photoReq;
integer HUDattachpoint=ATTACH_HUD_CENTER_1;
string missingtexture="1a6e02aa-23a8-7a5f-0525-44d724144f89";
Target()
{
    list agents=llGetAgentList(AGENT_LIST_REGION,[]);
    integer ownerindex=llListFindList( agents, (list)llGetOwner() );
    integer num_agents;
    agents=llDeleteSubList( agents, ownerindex, ownerindex );
    num_agents = llGetListLength(agents);
    index=((index<0)*(num_agents-1))+((index>=0)*(index*(index!=num_agents)));
    HUDtarget=llList2Key(agents, index);
    llSetText(llKey2Name(HUDtarget)+" ("+llGetDisplayName(HUDtarget)+")\n"+(string)HUDtarget, <0.0, 1.0, 0.0>, 1.0);
    photoReq=llHTTPRequest("http://world.secondlife.com/resident/" + (string)HUDtarget, [], "");
    llOwnerSay("("+(string)(index+1)+"/"+(string)(num_agents) +") Current Target: secondlife:///app/agent/" + (string)HUDtarget + "/inspect " + (string)HUDtarget );
}
default
{
    state_entry()
    {
        llRequestPermissions(llGetOwner(),PERMISSION_ATTACH);
    }
    attach(key id)
    {
        if (id)
        {
            llSetScale(<0.1, 0.15, 0.1>);
            llSetPrimitiveParams([PRIM_TYPE, PRIM_TYPE_BOX, PRIM_HOLE_DEFAULT, <0.0, 1.0, 0.0>, 0.0, <0.0, 0.0, 0.0>, <2.0, 0.5, 1.0>, <0.0, 0.0, 0.0>, PRIM_ROT_LOCAL, <0.000000, -0.707107, 0.000000, 0.707107>, PRIM_COLOR, 0, <1.0,1.0,1.0>, 1.0, PRIM_COLOR, 1, <0.0,1.0,0.0>, 1.0, PRIM_COLOR, 3, <0.0,1.0,0.0>, 1.0, PRIM_COLOR, 2, <1.0,1.0,1.0>, 0.0, PRIM_COLOR, 4, <1.0,1.0,1.0>, 0.0]);
            llRotateTexture(270.0*DEG_TO_RAD,0);
            HUDattachpoint=llGetAttached();
            Target();
            llRequestPermissions(llGetOwner(), PERMISSION_TAKE_CONTROLS);
        }
    }
    on_rez(integer param)
    {
        if ( !llGetAttached() )
        {
            index=0;
            HUDtarget=NULL_KEY;
            llSetText("", <0.0, 1.0, 0.0>, 1.0);
            llSetTexture(missingtexture, 0);
            llRequestPermissions(llGetOwner(),PERMISSION_ATTACH);
        }
    }
    touch_start(integer n)
    {
        index=index+(llDetectedTouchFace(0)==1)-(llDetectedTouchFace(0)==3);
        Target();
    }
    http_response(key request_id, integer status, list metadata, string body)
    {
        if( request_id == photoReq )
        {
            string photoID;
            integer StartIndex=llSubStringIndex(body,"<title>");
            integer EndIndex=llSubStringIndex(body,"</title>");
            if( StartIndex!=-1)
            {
                integer tempIndex=llSubStringIndex(body,"imageid")+18;
                if(tempIndex>17)photoID=llGetSubString(body,tempIndex,tempIndex+35);
            }
            if ( photoID==NULL_KEY || photoID=="" ) photoID=missingtexture;
            llSetTexture(photoID, 0);
        }
    }
    run_time_permissions(integer perms)
    {
        if ( perms & PERMISSION_ATTACH ) llAttachToAvatar(HUDattachpoint);
        if ( perms & PERMISSION_TAKE_CONTROLS ) llTakeControls(CONTROL_BACK, FALSE, TRUE);
    }
}