队伍目标：组队宣言的展示与变更

-- 错误：目标散在聊天里，刷两条就沉底
function shoutGoal(text)
    sendTeamChat("目标：" .. text)
end

local function setGoal(text)
    if not isLeader() then
        showTip("仅队长可设置目标")
        return
    end
    if #text > 120 then
        text = text:sub(1, 120)
    end
    writeLocal("teamGoal", text)
    broadcastTeam(text)
end
local function clearGoal()
    writeLocal("teamGoal", "")
    broadcastTeam("")
end