Try hard to parse the first snap item
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parent
45189d0217
commit
f98ad6ae30
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@ -191,7 +191,6 @@ class GameClient
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puts " id=#{msg_id} game_tick=#{game_tick} delta_tick=#{delta_tick}"
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puts " num_parts=#{num_parts} part=#{part} crc=#{crc} part_size=#{part_size}"
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puts "\n header:"
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return if msg_id == NETMSG_SNAPSINGLE
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header = []
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notes = []
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@ -208,7 +207,6 @@ class GameClient
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end
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puts "\n payload:"
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data = u.get_raw
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# [:green, 0, 4, 'who dis?']
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notes = []
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# data.groups_of(4).each_with_index do |item, index|
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@ -278,63 +276,112 @@ class GameClient
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{ name: 'event_damage', size: 5 }
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]
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data = u.get_raw
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# tw decompresses all bytes at once
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# and pads it with zeros to get the 4 byte aligned ints
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# we just grab one int at a time cuz yolo
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u = Unpacker.new(data)
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removed_items = u.get_int
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notes.push([:red, 0, 4, "removed_items=#{removed_items}"])
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notes.push([:green, 4, 4, 'num_items'])
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notes.push([:yellow, 8, 4, 'zero?'])
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num_removed_items = u.get_int
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p = u.parsed.last
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notes.push([:red, p[:pos], p[:len], "removed_items=#{num_removed_items}"])
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skip = 0
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((3 * 4)...data.size).each do |i|
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skip -= 1
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unless skip.negative?
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# puts "skipped i=#{i} hex=#{str_hex([data[i]].pack('C*'))} skips_left=#{skip}"
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next
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end
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num_item_deltas = u.get_int
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p = u.parsed.last
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notes.push([:blue, p[:pos], p[:len], "num_item_deltas=#{num_item_deltas}"])
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# reverse for little endian
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id = data[i...(i + 2)].reverse.map { |b| b.to_s(2).rjust(8, '0') }.join.to_i(2)
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zero = u.get_int
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p = u.parsed.last
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notes.push([:cyan, p[:pos], p[:len], "_zero=#{zero}"])
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if data[i + 4].nil? && i > 2
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puts "Error: unexpected end of data at i=#{i + 4} data_size=#{data.size}"
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next
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end
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type = data[(i + 2)...(i + 4)].reverse.map { |b| b.to_s(2).rjust(8, '0') }.join.to_i(2)
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size = @sizes[type]
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# p "id=#{id} type=#{type}"
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if size.nil? && i > 2
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puts "Error: could not get size for type=#{type} -> skip byte"
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next
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end
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size *= 4
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meta = @snap_items[type]
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notes.push([:green, i, 2, "id=#{id}"])
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notes.push([:pink, i + 2, 2, "type=#{type} (#{meta[:name]} size: #{size})"])
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item_payload = data[(i + 4)..]
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u = Unpacker.new(item_payload)
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(0...(size / 4)).each do |d|
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val = u.get_int
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field_name = ''
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field_name += meta[:fields][d][:name] unless meta[:fields].nil? || meta[:fields][d].nil?
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notes.push([:yellow, i + 4 + (d * 4), 4, "data[#{d}]=#{val} #{field_name}"])
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end
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skip += 3 + size + 1
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# puts "skip=#{skip}"
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# next
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# next unless item.length == 4
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# # reverse for little endian
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# id = item[2...4].reverse.map { |b| b.to_s(2).rjust(8, '0') }.join.to_i(2)
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# notes.push([:yellow, (index * 4) + 2, 2, "id=#{id}"])
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(0...num_removed_items).each do |i|
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deleted = u.get_int
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notes.push([:red, p[:pos], p[:len], "del[#{i}]=#{deleted}"])
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end
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item_delta = u.get_int
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item_bits = item_delta.to_s(2).rjust(32, '0')
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item_id_bits = item_bits[0...16]
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item_type_bits = item_bits[16..]
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item_id = item_id_bits.to_i(2)
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item_type = item_type_bits.to_i(2)
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item_meta = @snap_items[item_type]
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item_name = item_meta[:name]
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# { name: 'obj_game_data', size: 3, fields: [
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# { type: 'int', name: 'start_tick' },
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p = u.parsed.last
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notes.push([:green, p[:pos], p[:len],
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"\n id = #{item_id_bits} -> #{item_id}" \
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"\n type = #{item_type_bits} -> #{item_type} #{item_name}"])
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who = u.get_int
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p = u.parsed.last
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notes.push([:cyan, p[:pos], p[:len], "who are you mr #{who} ?"])
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size = item_meta[:size]
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(0...size).each do |i|
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val = u.get_int
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p = u.parsed.last
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color = (i % 2).zero? ? :yellow : :pink
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fields = item_meta[:fields]
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desc = ''
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desc = fields[i][:name] unless fields.nil? || fields[i].nil?
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notes.push([color, p[:pos], p[:len], "data[#{i}]=#{val} #{desc}"])
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end
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# skip = 0
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# ((3 * 4)...data.size).each do |i|
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# skip -= 1
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# unless skip.negative?
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# # puts "skipped i=#{i} hex=#{str_hex([data[i]].pack('C*'))} skips_left=#{skip}"
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# next
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# end
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# # reverse for little endian
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# id = data[i...(i + 2)].reverse.map { |b| b.to_s(2).rjust(8, '0') }.join.to_i(2)
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# if data[i + 4].nil? && i > 2
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# puts "Error: unexpected end of data at i=#{i + 4} data_size=#{data.size}"
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# next
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# end
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# type = data[(i + 2)...(i + 4)].reverse.map { |b| b.to_s(2).rjust(8, '0') }.join.to_i(2)
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# size = @sizes[type]
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# # p "id=#{id} type=#{type}"
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# if size.nil? && i > 2
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# puts "Error: could not get size for type=#{type} -> skip byte"
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# next
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# end
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# size *= 4
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# meta = @snap_items[type]
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# notes.push([:green, i, 2, "id=#{id}"])
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# notes.push([:pink, i + 2, 2, "type=#{type} (#{meta[:name]} size: #{size})"])
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# item_payload = data[(i + 4)..]
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# u = Unpacker.new(item_payload)
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# (0...(size / 4)).each do |d|
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# # val = u.get_int
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# val='EMPTY'
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# field_name = ''
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# field_name += meta[:fields][d][:name] unless meta[:fields].nil? || meta[:fields][d].nil?
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# notes.push([:yellow, i + 4 + (d * 4), 4, "data[#{d}]=#{val} #{field_name}"])
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# end
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# skip += 3 + size + 1
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# # puts "skip=#{skip}"
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# # next
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# # next unless item.length == 4
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# # # reverse for little endian
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# # id = item[2...4].reverse.map { |b| b.to_s(2).rjust(8, '0') }.join.to_i(2)
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# # notes.push([:yellow, (index * 4) + 2, 2, "id=#{id}"])
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# end
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hexdump_lines(data.pack('C*'), 1, notes, legend: :inline).each do |hex|
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puts " #{hex}"
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end
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@ -344,7 +391,7 @@ class GameClient
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return unless (@pred_game_tick - @ack_game_tick).abs > 10
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@pred_game_tick = @ack_game_tick + 1
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exit
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# exit
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end
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def on_emoticon(chunk); end
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@ -78,6 +78,8 @@ class Unpacker
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@data = data
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@prev = [] # all the data already unpacked
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@parsed = []
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# TODO: delete parsed or document it with examples
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# @parsed.push({ type: 'string', value: str, raw:, len:, pos: })
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@red_bytes = 0
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# { type: 'int', value: 1, raw: "\x01", len: 1, pos: 0 }
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if data.instance_of?(String)
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@ -1,7 +1,7 @@
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# frozen_string_literal: true
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AVAILABLE_COLORS = %i[
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red green yellow pink
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red green yellow pink magenta blue cyan white
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].freeze
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# String color
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@ -10,6 +10,7 @@ class String
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"\e[#{color_code}m#{self}\e[0m"
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end
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# foreground
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def red
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colorize(31)
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end
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@ -22,7 +23,58 @@ class String
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colorize(33)
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end
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def blue
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colorize(34)
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end
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def pink
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colorize(35)
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end
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# keklul pink alias
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def magenta
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colorize(35)
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end
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def cyan
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colorize(36)
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end
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def white
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colorize(37)
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end
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# background
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def bg_red
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colorize(41)
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end
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def bg_green
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colorize(42)
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end
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def bg_yellow
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colorize(43)
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end
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def bg_blue
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colorize(44)
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end
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def bg_pink
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colorize(45)
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end
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# keklul pink alias
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def bg_magenta
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colorize(45)
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end
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def bg_cyan
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colorize(46)
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end
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def bg_white
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colorize(47)
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end
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end
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