///////////////////////////////////////////////////////////////////////////
//  Copyright (C) Wizardry and Steamworks 2011 - License: GNU GPLv3      //
//  Please see: http://www.gnu.org/licenses/gpl.html for legal details,  //
//  rights of fair usage, the disclaimer and warranty conditions.        //
///////////////////////////////////////////////////////////////////////////

integer Key2Number(key objKey) {
  return ((integer)("0x"+llGetSubString((string)objKey,-8,-1)) & 0x3FFFFFFF) ^ 0xBFFFFFFF;
}
 
///////////////////////////////////////////////////////////////////////////
//    Copyright (C) 2013 Wizardry and Steamworks - License: GNU GPLv3    //
///////////////////////////////////////////////////////////////////////////
integer wasMenuIndex = 0;
list wasDialogMenu(list input, list actions, string direction) {
    integer cut = 11-wasListCountExclude(actions, [""]);
    if(direction == ">" &&  (wasMenuIndex+1)*cut+wasMenuIndex+1 < llGetListLength(input)) {
        ++wasMenuIndex;
        jump slice;
    }
    if(direction == "<" && wasMenuIndex-1 >= 0) {
        --wasMenuIndex;
        jump slice;
    }
@slice;
    integer multiple = wasMenuIndex*cut;
    input = llList2List(input, multiple+wasMenuIndex, multiple+cut+wasMenuIndex);
    input = wasListMerge(input, actions, "");
    return input;
}
 
///////////////////////////////////////////////////////////////////////////
//    Copyright (C) 2013 Wizardry and Steamworks - License: GNU GPLv3    //
///////////////////////////////////////////////////////////////////////////
integer wasListCountExclude(list input, list exclude) {
    if(llGetListLength(input) == 0) return 0;
    if(llListFindList(exclude, (list)llList2String(input, 0)) == -1) 
        return 1 + wasListCountExclude(llDeleteSubList(input, 0, 0), exclude);
    return wasListCountExclude(llDeleteSubList(input, 0, 0), exclude);
}
 
///////////////////////////////////////////////////////////////////////////
//    Copyright (C) 2013 Wizardry and Steamworks - License: GNU GPLv3    //
///////////////////////////////////////////////////////////////////////////
list wasListMerge(list l, list m, string merge) {
    if(llGetListLength(l) == 0 && llGetListLength(m) == 0) return [];
    string a = llList2String(m, 0);
    if(a != merge) return [ a ] + wasListMerge(l, llDeleteSubList(m, 0, 0), merge);
    return [ llList2String(l, 0) ] + wasListMerge(llDeleteSubList(l, 0, 0), llDeleteSubList(m, 0, 0), merge);
}
 
list tgtKeys = [];
list tgtNames = [];
 
list menu_items = [];
integer comHandle = 0;
 
default
{
    touch_start(integer total_number) {
        if(llDetectedKey(0) != llGetOwner()) return;
        llSensor("", "", AGENT, 96, TWO_PI);
    }
    sensor(integer num) {
        --num;
        menu_items = [];
        do {
            tgtKeys += llDetectedKey(num);
            tgtNames += llGetSubString(llDetectedName(num), 0, 23);
            menu_items += llGetSubString(llDetectedName(num), 0, 23);            
        } while(--num>-1);
        integer comChannel = (integer)("0x8" + llGetSubString(llGetOwner(), 0, 6));
        comHandle = llListen(comChannel, "", llGetOwner(), "");
        llDialog(llGetOwner(), "\nSelect target:\n", wasDialogMenu(menu_items, ["<= Back", "", "Next =>"], ""), comChannel);
    }
    listen(integer channel, string name, key id, string message) {
        if(message == "<= Back") {
            llSetTimerEvent(60);
            llDialog(id, "Please select an avatar to shoot from the list below:\n",  wasDialogMenu(menu_items, ["<= Back", "", "Next =>"], "<"), channel);
            return;
        }
        if(message == "Next =>") {
            llSetTimerEvent(60);
            llDialog(id, "Please select an avatar to shoot from the list below:\n",  wasDialogMenu(menu_items, ["<= Back", "", "Next =>"], ">"), channel);
            return;
        }
        llListenRemove(comHandle);
        llRezObject("*", llGetPos() + <0,0,3>, ZERO_VECTOR, ZERO_ROTATION, Key2Number(llList2Key(tgtKeys, llListFindList(tgtNames, (list)llGetSubString(message,0,23)))));
    }
    on_rez(integer num) {
        llResetScript();
    }
}