The scoreboard contains two mapped lists that keep track of the scores. The script listens to all primitives called [WaS-K] Explosive Puppy in order to filter out other messages. Additionally, to prevent cheating, the owner of the puppy object is checked at run-time.

The script is placed inside an invisible primitive at the top of the torch that contains the rezzing coordinates for the puppies in the description.

explosive_puppy_base.lsl

///////////////////////////////////////////////////////////////////////////
//  Copyright (C) Wizardry and Steamworks 2012 - License: GNU GPLv3      //
//  Please see: http://www.gnu.org/licenses/gpl.html for legal details,  //
//  rights of fair usage, the disclaimer and warranty conditions.        //
///////////////////////////////////////////////////////////////////////////
 
list killers = [];
list scores = [];
 
///////////////////////////////////////////////////////////////////////////
//    Copyright (C) 2013 Wizardry and Steamworks - License: GNU GPLv3    //
///////////////////////////////////////////////////////////////////////////
list wasDualQuicksort(list a, list b) {
    if(llGetListLength(a) <= 1) return a+b;
 
    integer pivot_a = llList2Integer(a, 0);
    a = llDeleteSubList(a, 0, 0);
    string pivot_b = llList2String(b, 0);
    b = llDeleteSubList(b, 0, 0);
 
    list less = [];
    list less_b = [];
    list more = [];
    list more_b = [];
 
    do {
        if(llList2Integer(a, 0) > pivot_a) {
            less += llList2List(a, 0, 0);
            less_b += llList2List(b, 0, 0);
            jump continue;
        }
        more += llList2List(a, 0, 0);
        more_b += llList2List(b, 0, 0);
@continue;
        a = llDeleteSubList(a, 0, 0);
        b = llDeleteSubList(b, 0, 0);
    } while(llGetListLength(a));
    return wasDualQuicksort(less, less_b) + [ pivot_a ] + [ pivot_b ] + wasDualQuicksort(more, more_b);
}
 
default
{
    state_entry() {
        llSetText("◎ Top Killas ◎", <1,.6,.8>, 1);
        integer comChannel = ((integer)("0x"+llGetSubString((string)llGetOwner(),-8,-1)) & 0x3FFFFFFF) ^ 0xBFFFFFFF;
        llListen(comChannel, "[WaS-K] Explosive Puppy", "", "");
        //llRegionSay(comChannel, "puppeh_death=" + (string)killer);
    }
    listen(integer channel, string name, key id, string message) {
        key obj = llList2Key(llGetObjectDetails(id, [OBJECT_OWNER]), 0);
        if(obj != llGetOwner()) return;
        list data = llParseString2List(message, ["="], []);
        if(llList2String(data, 0) != "puppeh_death") return;
        string killer = llKey2Name(llList2Key(data, 1));
        string fName = llList2String(llParseString2List(killer, [" "], []), 0);
        if(llList2String(llParseString2List(killer, [" "], []), 1) == "Resident") {
            killer = fName;
        }
        integer idx = llListFindList(killers, (list)killer);
        if(idx == -1) {
            killers += killer;
            scores += 1;
            jump display;
        }
        integer score = llList2Integer(scores, idx);
        scores = llListReplaceList(scores, (list)(score+1), idx, idx);
@display;
        llSetTimerEvent(1);
    }
    timer() {
        list sort = wasDualQuicksort(scores, killers);
        string display = "";
        integer count = 0;
        do {
            display += llList2String(sort, 1);
            display += " -> ";
            display += llList2String(sort, 0);
            display += "\n";
            sort = llDeleteSubList(sort, 0, 0);
            sort = llDeleteSubList(sort, 0, 0);
            if(++count==5) jump show;
        } while(llGetListLength(sort));
@show;
        llSetText("◎ Top Killas ◎ \n" + display, <1,.6,.8>, 1);
        llSetTimerEvent(0);
    }
    touch_start(integer total_number)
    {
        vector iPos = ZERO_VECTOR;
        list dVec = llParseString2List(llGetObjectDesc(), ["<", ",", ">"], []);
        iPos.x = llList2Float(dVec, 0);
        iPos.y = llList2Float(dVec, 1);
        iPos.z = llList2Float(dVec, 2);
        llRezObject("[WaS-K] Explosive Puppy", iPos, ZERO_VECTOR, ZERO_ROTATION, 0);
    }
    on_rez(integer num) {
        llResetScript();
    }
}