火折子：吹口气照亮夜路

 fx-firestick

local FireStick = {}
local KEY = { GROW = 40 }

local lit, flameH = false, 0
local fx, fy = 330, 170

function FS.Blow()
    if lit then return end
    lit = true
    flameH = 5
    SL:PlaySfx("blow_fire")
    SL:PlayBurst(fx, fy - 20, "fire_spark", 8)
    -- 火苗生长: 从火种到满高
    SL:Schedule(function(dt)
        if not lit then SL:UnSchedule("flameGrow") return end
        flameH = math.min(60, flameH + KEY.GROW * dt)
        SL:SetFxSize("flame", 10, flameH)
        SL:SetFxPos("flame", fx + math.sin(SL:GetValue("engineTime") * 8) * 4,
                    fy - flameH / 2)
        if flameH >= 60 then SL:UnSchedule("flameGrow") end
    end, 0.016, "flameGrow")
end

function FS.Render()
    if not lit then return end
    -- 火苗光晕: 暖色径向渐变
    SL:DrawGlow(fx, fy - flameH / 2, flameH, "warm")
    -- 火折子纸卷
    SL:DrawRect(fx - 7, fy, 14, 90, "#8a5a2a")
    -- 摇曳的火苗偏移
    local sway = math.sin(SL:GetValue("engineTime") * 8) * 4
    SL:DrawFlame(fx + sway, fy - flameH / 2, flameH)
end

return FS