摄魂一钩：跑得再快也拽回来

fx-hook

local SoulHook = {}
local CONST = { MSG_ID = 12140, KEY = "SoulHook", SPEED = 750, PULL_MULT = 1.25, AIM_H = 64 }

function SoulHook.Cast(myID, dirSign)
    local myX = SL:GetValue("ACTOR_POSITION_X", myID)
    local myY = SL:GetValue("ACTOR_POSITION_Y", myID)
    SoulHook._hook = { x = myX + 26 * dirSign, y = myY - CONST.AIM_H, dir = dirSign, out = true }
    SL:SendLuaNetMsg(CONST.MSG_ID, 0, 0, 0,
        SL:JsonEncode({ key = CONST.KEY, op = 1, actorID = myID, dir = dirSign }))
    SoulHook._sched = SL:Schedule(function(dt) SoulHook:UpdateHook(dt) end, 0.02)
end

function SoulHook:UpdateHook(dt)
    local h = self._hook
    if not h then return end
    if h.out then                                        -- 飞出段
        h.x = h.x + h.dir * CONST.SPEED * dt
        local tid = FindTargetNear(h.x, h.y, 30)         -- 咬住: 头胸高度横向判定
        if tid then
            h.out = false; h.caught = tid
            SL:SendLuaNetMsg(CONST.MSG_ID, tid, 0, 0,
                SL:JsonEncode({ key = CONST.KEY, op = 2, caught = tid }))
        elseif h.x > scene:GetWidth() + 40 then
            h.out = false                                -- 落空收回
        end
    else                                                  -- 拖回段
        h.x = h.x - h.dir * CONST.SPEED * CONST.PULL_MULT * dt
        if h.caught then SetActorX(h.caught, math.max(h.x + 26, self._startX)) end
        if h.x <= self._startX then self:Finish() end
    end
end

return SoulHook