killstreak.lua

// you can stop using your shitty "KILLSTREAK = 3" scripts now

local function contraction(num)
	num = tostring(num);
	local contract = string.sub(num, string.len(num), string.len(num));
	local cont = "";

	if (string.len(num) > 1) then
		if (string.GetChar(num, string.len(num) - 1) == "1") then // 11, 12, 13, 111, 112, ...
			return num .. "th";
		end
	end

	if contract == "1" then
		cont = "st";
	elseif contract == "2" then
		cont = "nd";
	elseif contract == "3" then
		cont = "rd";
	else // 0 4 5 6 7 8 9
		cont = "th";
	end

	return num .. cont;
end

local sayings = {
	"First Blood!",
	"Killing Spree!",
	"Killing Frenzy!",
	"Running Riot!",
	"Rampage!",
	"Untouchable!",
	"Invincible!"
}

local function getmsg(knum)
	if (knum <= 1) then
		return sayings[1];
	elseif (knum <= 10) then
		return sayings[2];
	elseif (knum <= 15) then
		return sayings[3];
	elseif (knum <= 20) then
		return sayings[4];
	elseif (knum <= 25) then
		return sayings[5];
	elseif (knum <= 30) then
		return sayings[6];
	else
		return sayings[7];
	end
end

local kills = 0;

local function killstreak(data)
	local attacker = player.GetByID(data.entindex_attacker);
	local victim = player.GetByID(data.entindex_killed);

	if (!attacker:IsValid() or !victim:IsValid()) then
		return;
	end

	if (victim == LocalPlayer()) then // streak over
		kills = 0;
		return;
	end

	if (attacker == LocalPlayer()) then
		kills = kills + 1;
		RunConsoleCommand("say", string.format("%s %s was my %s kill!", getmsg(kills), victim:Nick(), contraction(kills)));
	end
end
gameevent.Listen("entity_killed");
hook.Add("entity_killed", "killstreak", killstreak);