coroutine协程的问题
游戏中有一个使用技能，触发后能够减少当前处于cd中技能的冷却时间在客户端cd限制中，cd的展示我使用了协程的方式。但是，当第一次调用冷却后，处于冷却中，再次调用，客户端显示上回会执行2个协程，我没办法中断上一个协程，我对协程理解非常有限，若有能实现方法更好的方式，请大佬赐教！
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1、模块
local CoolDownManager = {}
CoolDownManager.__index = CoolDownManager
function CoolDownManager.new_F()
local self = setmetatable({}, CoolDownManager)
self._running = false
return self
end
---方形cd
function CoolDownManager:coolDownAnimaF(Button,CD)
if not self._running then
local thread = coroutine.create(function()
self._running = true
Button.time.Text = CD
Button.cd.Visible = true
Button.icon.ImageColor3 = Color3.fromRGB(107, 107, 107)
local goal = {}
goal.Position = UDim2.new(0, 0,1, 0)
goal.Size = UDim2.new(1, 0,0, 0)
local info = TweenInfo.new(CD,Enum.EasingStyle.Linear)
local tween = TweenService:Create(Button.cd,info,goal)
tween:Play()
local counter = 0
while self._running and counter < CD do
wait(1)
counter = counter + 1
Button.time.Text = CD - counter
--print("--------"..CD)
--print(self._running)
if counter == CD then
Button.time.Text = ""
Button.icon.ImageColor3 = Color3.fromRGB(255, 255, 255)
Button.cd.Visible = false
Button.cd.Size = UDim2.new(1, 0,1, 0)
Button.cd.Position = UDim2.new(0, 0,0, 0)
end
end
self._running = false
Button.time.Text = ""
end)
coroutine.resume(thread)
else
warn("Warning: timer could not start again as it is already running.")
end
end
--重置状态为假
function CoolDownManager:stop()
if self and self._running then
self._running = false
end
end
return CoolDownManager
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