狮子搏兔：扑得狠也要歇得久

fx-lionpounce

local LionPounce = {}
local KEY = { LUNGE_SPD = 620 }

local st = { phase = "idle", t = 0, rec = 3 }

local function SetPhase(name)
    st.phase = name
    st.t = 0
end

function LP.Pounce(self_)
    if st.phase ~= "idle" then return end
    SetPhase("crouch")
    SL:PlayActorAct(self_, "cast")
    SL:Schedule(function(dt)
        st.t = st.t + dt
        if st.phase == "crouch" then
            if math.random() < dt * 20 then
                SL:PlayBurst(SL:GetValue("actorX", self_) - 20,
                             SL:GetValue("actorY", self_), "dust", 1)
            end
            if st.t > 0.4 then
                SetPhase("lunge")
                SL:SetActorVelocity(self_, KEY.LUNGE_SPD, 0)
            end
        elseif st.phase == "lunge" then
            -- 扑击残影: 每几帧记录一个历史位置
            SL:PlayGhostTrail(self_)
            local target = SL:GetValue("curTarget")
            local dx = SL:GetValue("actorX", target) - SL:GetValue("actorX", self_)
            if dx < 44 then
                SL:SetActorVelocity(self_, 0, 0)
                SL:UnSchedule("pounceRun")
                LP.Pin(target)
            end
        elseif st.phase == "recover" then
            -- 回气环: 按剩余时间画弧
            local k = 1 - st.t / (SL:GetValue("recoverTime") or 3)
            SL:DrawArc("recover_ring", SL:GetValue("actorX", self_),
                       SL:GetValue("actorY", self_) - 50, k * 6.28)
            if st.t >= (SL:GetValue("recoverTime") or 3) then
                SL:UnSchedule("pounceRun")
                SetPhase("idle")
            end
        end
    end, 0.016, "pounceRun")
end

function LP.Pin(target)
    SetPhase("pinned")
    SL:PlayActorAct(self_, "idle")
    SL:PlayActorAct(target, "stuck")
    SL:ScreenShake(0.34, 6)
    SL:PlayFxAt("pin_shock", SL:GetValue("actorX", target),
                              SL:GetValue("actorY", target))
    SL:DeductHp(target, 52)
    SL:ShowHitNum(target, 52, "pounce")
    SL:KnockBack(target, 60)
    st.rec = SL:GetValue("recoverTime") or 3
end

return LP