偷天换血：你的血我的血对调

fx-hpswap

local HpSwap = {}
local KEY = { FLIGHT = 0.7 }

local orbs = {}

function Swap.Cast(self_, target, gateLine)
    local myHp = SL:GetValue("actorHp", self_)
    local myMax = SL:GetValue("actorHpMax", self_)
    if myHp / myMax > gateLine then
        SL:ShowSystemTips("血量高于绝境线, 发动无效")
        return
    end
    SL:PlayActorAct(self_, "cast")
    local from = { x = SL:GetValue("actorX", self_), y = SL:GetValue("actorY", self_) - 56 }
    local to = { x = SL:GetValue("actorX", target), y = SL:GetValue("actorY", target) - 56 }
    for i = 1, 8 do
        orbs[#orbs + 1] = { side = 0, delay = -i * 0.06, from = from, to = to }
        orbs[#orbs + 1] = { side = 1, delay = -i * 0.06, from = to, to = from }
    end
    SL:Schedule(function(dt)
        local arrived = 0
        for _, o in ipairs(orbs) do
            o.delay = o.delay + dt
            if o.delay >= 0 then
                o.k = math.min(1, o.k and o.k + dt / KEY.FLIGHT or dt / KEY.FLIGHT)
                if o.k >= 1 then arrived = arrived + 1 end
            end
        end
        if arrived >= #orbs then
            SL:UnSchedule("swapRun")
            -- 真正的对调只在这一帧发生
            local a = SL:GetValue("actorHp", self_)
            local b = SL:GetValue("actorHp", target)
            SL:SetActorHp(self_, b)
            SL:SetActorHp(target, a)
            SL:ScreenShake(0.28, 5)
            SL:ShowSystemTips("血量互换!")
        end
    end, 0.016, "swapRun")
end

return Swap