--�õ�����������
function GetTeamPlayerNum(MapID,InstanceID,RoleID)
	local PlayerNum = 0
	local PlayerTeamID = role.IsRoleHaveTeam(MapID,InstanceID,RoleID)
	if PlayerTeamID == nil or PlayerTeamID == -1 or PlayerTeamID == 4294967295 then
		PlayerNum = 1
	else
		local Player = {}
		Player[1], Player[2], Player[3], Player[4], Player[5], Player[6] = role.GetRoleTeamMemID(PlayerTeamID)
		for i=1, 6 do
			if Player[i] and Player[i]~= 4294967295 then
				PlayerNum = PlayerNum + 1
			end
		end
	end
	return PlayerNum
end

-- �����������
function deepcopy(object)
    local lookup_table = {}
    local function _copy(object)
        if type(object) ~= "table" then
            return object
        elseif lookup_table[object] then
            return lookup_table[object]
        end
        local new_table = {}
        lookup_table[object] = new_table
        for index, value in pairs(object) do
            new_table[_copy(index)] = _copy(value)
        end
        return setmetatable(new_table, getmetatable(object))
    end
    return _copy(object)
end

-- Weighted random picker.
-- Accepts array-like tables such as: { {itemId, count, weight}, ... }
-- Also supports { {item_id=..., count=..., weight=...}, ... }.
-- Returns the selected entry table (not a copy) or nil if nothing selectable.
function GetWeightedRandomItem(items)
	if type(items) ~= "table" then
		return nil
	end

	local total = 0
	local n = #items

	if n > 0 then
		for i = 1, n do
			local it = items[i]
			if type(it) == "table" then
				local w = tonumber(it[3] or it.weight) or 1
				if w > 0 then
					total = total + w
				end
			end
		end

		if total <= 0 then
			return nil
		end

		local r = math.random(total)
		for i = 1, n do
			local it = items[i]
			if type(it) == "table" then
				local w = tonumber(it[3] or it.weight) or 1
				if w > 0 then
					r = r - w
					if r <= 0 then
						return it
					end
				end
			end
		end

		return items[n]
	end

	-- Fallback for non-array tables.
	for _, it in pairs(items) do
		if type(it) == "table" then
			local w = tonumber(it[3] or it.weight) or 1
			if w > 0 then
				total = total + w
			end
		end
	end

	if total <= 0 then
		return nil
	end

	local r = math.random(total)
	for _, it in pairs(items) do
		if type(it) == "table" then
			local w = tonumber(it[3] or it.weight) or 1
			if w > 0 then
				r = r - w
				if r <= 0 then
					return it
				end
			end
		end
	end

	return nil
end