Minecraft Lua计时器脚本暂停恢复后时间跳变问题求助

核心故障原因 #

• 重复定义keyboard函数：后定义的启停逻辑函数覆盖了重置逻辑函数，导致重置键完全失效。
• 暂停恢复逻辑错误：从暂停状态切回计时状态时，未调整初始计时时间startTime，仍使用首次启动的时间戳计算总时长，暂停期间的时长被算入计时结果，因此出现时间跳变。
• 时间换算逻辑bug：timeText函数计算小时时错误扣减一天的秒数（86400），而非一小时的秒数（3600），会导致小时统计完全错误。
• 变量逻辑冗余：previoustime变量未正确存储累计计时时长，恢复计时时给局部变量time赋值无实际作用，未对接全局计时逻辑。

修复后完整代码 #

name = "Stopwatch"
description = "Count time for whatever reason..."

positionX = 0
positionY = 0
sizeX = 24
sizeY = 10
scale = 1

START_STOP_KEY = 0x55 -- 对应按键U
RESET_KEY = 0x4A -- 对应按键J
--[[
    Stopwatch Module Script
    如需修改按键可查询Windows虚拟键码表获取对应编码
]]--

-------------script-code-------------
state = 0
startTime = 0
stopTime  = 0

-- 合并两个重复的keyboard函数，避免逻辑覆盖
function keyboard(key, isDown)
    if (isDown == true) then
        -- 重置逻辑
        if (key == RESET_KEY) then
            state = 0
            startTime = 0
            stopTime = 0
        -- 启停逻辑
        elseif (key == START_STOP_KEY) then
            if (state == 0) then
                -- 首次启动
                state = 1
                startTime = os.time()
            elseif (state == 1) then
                -- 暂停
                state = 2
                stopTime = os.time()
            elseif (state == 2) then
                -- 恢复计时，调整startTime抵消暂停时长
                state = 1
                startTime = os.time() - (stopTime - startTime)
            end
        end
    end
end

TimerText = "00:00"
TextColor = {r=30,g=255,b=30,a=255}
function doubleDigit(number)
    if (number < 10) then
        return "0" .. math.floor(number)
    else
        return math.floor(number)
    end
end

function timeText(time)
    local result = ""
    local days = 0
    while (time > 86399) do 
        days = days + 1 
        time = time - 86400 
    end

    local hours = 0
    -- 修复小时计算错误，扣减3600秒而非86400秒
    while (time > 3599) do 
        hours = hours + 1 
        time = time - 3600
    end
    
    local minutes = 0
    while (time > 59) do 
        minutes = minutes + 1 
        time = time - 60 
    end

    if (days == 0) then
        if (hours == 0) then
            return doubleDigit(minutes) .. ":" .. doubleDigit(time)
        else
            return math.floor(hours) .. " : " .. doubleDigit(minutes) .. ":" ..doubleDigit(time)
        end  
    else
        return math.floor(days) .. " : " .. doubleDigit(hours) .. " : " .. doubleDigit(minutes) .. ":" .. doubleDigit(time)  
    end
end

function update()
    if (state == 0) then
        TextColor = {r=30,g=255,b=30,a=255}
        TimerText = "00:00"
    elseif (state == 1) then
        TimerText = timeText(os.time() - startTime)
        TextColor = {r=30,g=255,b=30,a=255}
    elseif (state == 2) then
        TimerText = timeText(stopTime - startTime)
        TextColor = {r=30,g=30,b=255,a=255}
    end
end

function render()
    local font = gui.font()
    local tw = font.width(TimerText)

    gfx.color(0,0,0,120)
    gfx.rect(0, 0, tw + 4, 10)

    gfx.color(TextColor.r, TextColor.g, TextColor.b, TextColor.a)
    gfx.text(2, 1, TimerText)
end

内容的提问来源于stack exchange，提问作者SebyGHG