灭天火：头顶烧起来才知道疼

fx-skyfire

local SkyFire = {}
local KEY = { MARK = 0.55, TICK = 0.55 }
local burning = {}

local function GroundMark(target, dur)
    -- 脚下符印：用 SL:Schedule 驱动旋转与呼吸
    local t = 0
    SL:Schedule(function(dt)
        t = t + dt
        local a = math.floor(90 + math.sin(t * 12) * 60)
        SL:PlayGroundFx(target, "fire_mark", a)
        if t >= dur then
            SL:UnSchedule("sfMark")
            SL:StopGroundFx(target, "fire_mark")
        end
    end, 0.016, "sfMark")
end

function SkyFire.Cast(self_, target)
    if burning[target] then return end
    SL:PlayActorAct(self_, "cast")
    GroundMark(target, KEY.MARK)
    -- 预告期结束，火柱结算
    SL:ScheduleOnce(function()
        local x, y = SL:GetValue("actorX", target), SL:GetValue("actorY", target)
        SL:PlayFxAt("fire_pillar", x, y)
        SL:ScreenShake(0.3, 5)
        SL:DeductHp(target, 18)
        SL:ShowHitNum(target, 18, "fire_big")
        SL:PlayActorAct(target, "stuck")
        burning[target] = { jumps = 3, timer = 0 }
        SkyFire.Tick(target)
    end, KEY.MARK)
end

function SkyFire.Tick(target)
    SL:Schedule(function(dt)
        local b = burning[target]
        if not b then SL:UnSchedule("sfBurn") return end
        b.timer = b.timer + dt
        if b.timer >= KEY.TICK then
            b.timer = b.timer - KEY.TICK
            b.jumps = b.jumps - 1
            SL:DeductHp(target, 7)
            SL:ShowHitNum(target, 7, "fire_small")
            if b.jumps <= 0 then
                burning[target] = nil
                SL:UnSchedule("sfBurn")
            end
        end
    end, 0.016, "sfBurn")
end

return SkyFire