吹蜡烛：每口气都灭一片

fx-blowcandle

local BlowCandle = {}
local KEY = { SMOKE_T = 0.9 }

local candles = {}

function BC.Build(count)
    candles = {}
    for i = 1, count do
        candles[#candles + 1] = {
            x = 210 + (i - 1) * 48,
            lit = true,
            fade = 1,
            sway = math.random() * 6.28
        }
    end
end

function BC.Blow()
    local any = false
    for _, c in ipairs(candles) do
        if c.lit and math.random() < 0.7 then
            c.lit = false
            c.fade = 0.001
            any = true
            SL:PlayBurst(c.x, SL:GetValue("tableY") - 52, "smoke_wisp", 4)
        end
    end
    local lit = 0
    for _, c in ipairs(candles) do
        if c.lit then lit = lit + 1 end
    end
    SL:ShowSystemTips("还亮 " .. lit .. " 根")
    if lit == 0 and any then
        SL:FlashScreen("#000000", 0.5)          -- 全屏暗半秒许愿
        SL:ScheduleOnce(function()
            SL:ShowSystemTips("愿望会实现的")
        end, 0.6)
    end
end

function BC.Tick(dt)
    for _, c in ipairs(candles) do
        if c.lit then
            c.sway = c.sway + dt * 6
            -- 火苗摇曳: 幅度跟正弦走
            SL:SetFlameSway(c.x, math.sin(c.sway) * 3)
        elseif c.fade < 1 then
            c.fade = math.min(1, c.fade + dt)
        end
    end
end

return BC