CAC Undetected Hook

local h = {
	hooks = {},
};

local null = function() end

function h.detour(typ)
	h.hooks[typ] = {};

	local ofunc = GAMEMODE[typ] || null;

	GAMEMODE[typ] = function(self, ...)

		ofunc(self, ...);

		for k,v in next, h.hooks[typ] do
			local ret1, ret2, ret3, ret4 = v(...);
			if(ret1) then return ret1, ret2, ret3, ret4; end
		end

	end
end

function h.Add(typ, func)
	if(!h.hooks[typ]) then
		h.detour(typ);
	end

	h.hooks[typ][ #h.hooks[typ] + 1 ] = func;
end

--example:

h.Add("Think", function() print("nice"); end);