扎染：蓝底白花捆出来

 fx-tiedye

local TieDye = {}
local KEY = { MAX_DIP = 5 }

local dips, opened, openK = 0, false, 0

function TD.Dip()
    if opened then return end
    dips = dips + 1
    SL:SetValue("dips", dips)
    SL:PlayBurst(330, 160, "indigo_ripple", 6)
    SL:PlaySfx("dip", dips % 3)
    SL:ShowSystemTips("浸染 " .. dips .. " 次")
end

function TD.Open()
    if dips == 0 or opened then return end
    opened = true
    SL:PlaySfx("unfold")
    -- 展开: 白花从中心放射铺开
    SL:Schedule(function(dt)
        openK = math.min(1, openK + dt * 1.1)
        SL:SetFxScale("cloth", 0.3 + 0.7 * openK)
        SL:SetFxAlpha("cloth", openK)
        -- 放射白花: 三环白圈错落
        for ring = 1, 3 do
            local rr = 40 + ring * 36
            local count = 6 + ring * 4
            for i = 1, count do
                local a = i / count * 6.28
                SL:DrawWhiteDot(math.cos(a) * rr, math.sin(a) * rr,
                                16 - ring * 3)
            end
        end
        SL:DrawWhiteDot(0, 0, 26)      -- 中心大白花
        if openK >= 1 then
            SL:UnSchedule("unfoldRun")
            SL:ShowSystemTips("蓝底白花成样!")
        end
    end, 0.016, "unfoldRun")
end

return TD