影奥义诸刃：三影同刀你分不清

fx-phantom

local PhantomBlades = {}
local CONST = { MSG_ID = 12050, KEY = "PhantomBlades", SLOT_GAP = 70, RUN_SPEED = 300 }

function PhantomBlades.Cast(myID)
    local myX = SL:GetValue("ACTOR_POSITION_X", myID)
    local myY = SL:GetValue("ACTOR_POSITION_Y", myID)
    local target = PhantomBlades:FindNearest(myX, myY)
    if not target then return end

    -- 双影槽位: 目标左右各一个
    for i = -1, 1, 2 do
        local sx = target.tx + i * CONST.SLOT_GAP
        PhantomBlades.SpawnShadow(sx, myY, target)
    end

    -- 广播: 旁观者看到同样的分身戏
    SL:SendLuaNetMsg(CONST.MSG_ID, 0, 0, 0,
        SL:JsonEncode({ key = CONST.KEY, op = 1, actorID = myID, tx = target.tx, ty = target.ty }))
end

function PhantomBlades.SpawnShadow(x, y, target)
    local shadow = {
        x = x, y = y, alpha = 0.55,
        state = "run", target = target
    }
    shadow.sched = SL:Schedule(function(dt)
        PhantomBlades:UpdateShadow(shadow, dt)
    end, 0.02)
    table.insert(PhantomBlades._shadows, shadow)
end

function PhantomBlades:UpdateShadow(s, dt)
    if s.state == "run" then
        local dx = s.target.x - s.x
        if math.abs(dx) > 6 then
            s.x = s.x + math.sign(dx) * CONST.RUN_SPEED * dt
        else
            s.state = "ready"                          -- 就位待合击
            SL:UnSchedule(s.sched)
        end
    end
end

SL:RegisterLuaNetMsg(CONST.MSG_ID, function(_, p1, p2, p3, msgData)
    local d = SL:JsonDecode(msgData)
    if d.key ~= CONST.KEY or d.op ~= 2 then return end
    -- 合击帧: 三道斩线 + 目标踉跄
    local m = FindActor(d.tid)
    if m then m:PlayStagger(0.8) end
end)

return PhantomBlades