青龙偃月：身前一扇谁也别想过

fx-crescent

local DragonSweep = {}
local CONST = { KEY = "DragonSweep", RADIUS = 150, ANG = 150 }

function DragonSweep.Cast(myID)
    local faceDeg = SL:GetValue("ACTOR_DIR", myID) * 45
    SL:SendLuaNetMsg(CONST.MSG_ID, 0, 0, 0,
        SL:JsonEncode({ key = CONST.KEY, op = 1, actorID = myID }))

    local list = SL:GetValue("FIND_IN_VIEW_MONSTER_LIST") or {}
    for _, id in ipairs(list) do
        local mx = SL:GetValue("ACTOR_POSITION_X", id)
        local my = SL:GetValue("ACTOR_POSITION_Y", id)
        local dx, dy = mx - SL:GetValue("ACTOR_POSITION_X", myID), my - SL:GetValue("ACTOR_POSITION_Y", myID)
        local dist = math.sqrt(dx * dx + dy * dy)
        if dist <= CONST.RADIUS then
            local deg = ((math.atan2(dy, dx) * 57.29577951 + 90) + 360) % 360
            local diff = math.abs(deg - faceDeg)
            if diff > 180 then diff = 360 - diff end
            if diff <= CONST.ANG / 2 then
                SL:SendLuaNetMsg(CONST.MSG_ID, id, 0, 0,
                    SL:JsonEncode({ key = CONST.KEY, op = 2, hit = id }))
            end
        end
    end
end

return DragonSweep