KillStreaks

KillStreaks = KillStreaks or {}; -- The main table for the addon
local kills = {}; -- The table containing players kill streaks;

hook.Add("PlayerConnect", "KillStreaks.PlayerConnect", function(ply)
    kills[ply:SteamID()] = 0;
end);

hook.Add("PlayerDisconnect", "KillStreaks.PlayerDisconnect", function(ply)
    table.Remove(kills, ply:SteamID());
end);

hook.Add("PlayerDeath", "KillStreaks.PlayerDeath", function(victim, inflictor, attacker)
    if (IsValid(attacker) and attacker:IsPlayer() and IsValid(victim) and victim:IsPlayer()) then
        kills[attacker:SteamID()] = KillStreaks:GetKills(ply) + 1;
    end
end);

function KillStreaks:GetKills(ply)
    return kills[ply:SteamID()] or 0;
end

function KillStreaks:Reset(ply)
    kills[ply:SteamID()] = 0;
end

function KillStreaks:Subtract(ply, amount)
    kills[ply:SteamID()] = self:GetKills(ply) - amount;
end