action_packets.lua

--[[
* timers - Copyright (c) 2022 The Mystic
*
* This file is part of Timers for Ashita.
*
* Timers is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Timers is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Timers.  If not, see <https://www.gnu.org/licenses/>.
--]]

function ParseActionPacket(packet)
    local retval = {}
    if string.byte(packet) ~= 0x28 then return retval end

    retval['size'] = ashita.bits.unpack_be(packet:totable(), 32, 8)
    retval['actor_id'] = ashita.bits.unpack_be(packet:totable(), 40, 32)
    retval['target_count'] = ashita.bits.unpack_be(packet:totable(), 72, 10)
    retval['type'] = ashita.bits.unpack_be(packet:totable(), 82, 4)
    retval['param'] = ashita.bits.unpack_be(packet:totable(), 86, 16)
    retval['unknown'] = ashita.bits.unpack_be(packet:totable(), 102, 16)
    retval['recast'] = ashita.bits.unpack_be(packet:totable(), 118, 32)
    retval['targets'] = {}

    local offset = 150
    for i = 1, retval.target_count do
        local target = {}
        target['offset_start']                   = offset
        target['id']                             = ashita.bits.unpack_be(packet:totable(), offset,     32)
        target['action_count']                   = ashita.bits.unpack_be(packet:totable(), offset+32,   4)
        target['actions'] = {}
        offset = offset + 36
        for n = 1, target.action_count do
            local action = {}
            action['offset_start']               = offset
            action['reaction']                   = ashita.bits.unpack_be(packet:totable(), offset,     5)
            action['animation']                  = ashita.bits.unpack_be(packet:totable(), offset+5,  11)
            action['effect']                     = ashita.bits.unpack_be(packet:totable(), offset+16,  5)
            action['stagger']                    = ashita.bits.unpack_be(packet:totable(), offset+21,  6)
            action['param']                      = ashita.bits.unpack_be(packet:totable(), offset+27, 17)
            action['message']                    = ashita.bits.unpack_be(packet:totable(), offset+44, 10)
            action['unknown']                    = ashita.bits.unpack_be(packet:totable(), offset+54, 31)

            action['has_add_effect']             = ashita.bits.unpack_be(packet:totable(), offset+85,  1)
            action['has_add_effect']             = action.has_add_effect == 1
            offset = offset + 86
            if action.has_add_effect then
                action['add_effect_animation']   = ashita.bits.unpack_be(packet:totable(), offset,     6)
                action['add_effect_effect']      = ashita.bits.unpack_be(packet:totable(), offset+6,   4)
                action['add_effect_param']       = ashita.bits.unpack_be(packet:totable(), offset+10, 17)
                action['add_effect_message']     = ashita.bits.unpack_be(packet:totable(), offset+27, 10)
                offset = offset + 37
            end
            action['has_spike_effect']           = ashita.bits.unpack_be(packet:totable(), offset,     1)
            action['has_spike_effect']           = action.has_spike_effect == 1
            offset = offset + 1
            if action.has_spike_effect then
                action['spike_effect_animation'] = ashita.bits.unpack_be(packet:totable(), offset,     6)
                action['spike_effect_effect']    = ashita.bits.unpack_be(packet:totable(), offset+6,   4)
                action['spike_effect_param']     = ashita.bits.unpack_be(packet:totable(), offset+10, 14)
                action['spike_effect_message']   = ashita.bits.unpack_be(packet:totable(), offset+24, 10)
                offset = offset + 34
            end
            action['offset_end']                 = offset
            table.insert(target['actions'], action)
        end
        target['offset_end'] = offset
        table.insert(retval['targets'], target)
    end

    return retval
end