幽冥火咒：紫火烧完才算完

 fx-ghostfire

local GhostFire = {}
local KEY = { BURN_TICK = 0.5, BURN_DMG = 8 }

local burning = {}

function GF.Cast(self_, target, duration)
    SL:PlayActorAct(self_, "cast")
    SL:PlayFlyFx("ghost_orb", SL:GetValue("actorX", self_) + 20,
                 SL:GetValue("actorY", self_) - 56,
                 SL:GetValue("actorX", target),
                 SL:GetValue("actorY", target) - 58,
                 380, { color = "purple" }, function()
        burning[target] = { jumps = duration, timer = 0 }
        SL:PlayFxAt("ghost_ring", SL:GetValue("actorX", target),
                                SL:GetValue("actorY", target) - 58)
        SL:ShowSystemTips("幽冥火附着!")
    end)
    SL:Schedule(function(dt)
        local b = burning[target]
        if not b then SL:UnSchedule("gfBurn") return end
        b.timer = b.timer + dt
        if b.timer >= KEY.BURN_TICK then
            b.timer = b.timer - KEY.BURN_TICK
            b.jumps = b.jumps - 1
            SL:DeductHp(target, KEY.BURN_DMG)
            SL:ShowHitNum(target, KEY.BURN_DMG, "ghost_fire")
            if b.jumps <= 0 then
                burning[target] = nil
                SL:UnSchedule("gfBurn")
                SL:ShowSystemTips("火焰熄灭")
            end
        end
    end, 0.016, "gfBurn")
end

return GF