Imported FTC Clock

lib/game_clock/net/packet.rb

@@ -0,0 +1,109 @@
+module TAC
+  class PracticeGameClock
+    class ClockNet
+  SYNC_INTERVAL = 250
+  HEARTBEAT_INTERVAL = 1_500
+
+  class Packet
+    PROTOCOL_VERSION = 1
+    PROTOCOL_SEPERATOR = "|"
+    PROTOCOL_HEARTBEAT = "heartbeat"
+
+    PACKET_TYPES = {
+      handshake: 0,
+      heartbeat: 1,
+      error: 2,
+      shutdown: 3,
+
+      start_clock: 10,
+      abort_clock: 11,
+
+      set_clock_title: 20,
+      get_clock_title: 21,
+      clock_title: 22,
+      clock_time: 23,
+
+      randomizer_visible: 27,
+
+      jukebox_previous_track: 30,
+      jukebox_next_track: 31,
+      jukebox_stop: 32,
+      jukebox_play: 33,
+      jukebox_pause: 34,
+      jukebox_set_volume: 35,
+      jukebox_get_volume: 36,
+      jukebox_volume: 37,
+      jukebox_get_current_track: 38,
+      jukebox_current_track: 39,
+      jukebox_get_sound_effects: 40,
+      jukebox_set_sound_effects: 41,
+      jukebox_sound_effects: 42,
+    }
+
+    def self.from_stream(message)
+      slice = message.split("|", 4)
+
+      if slice.size < 4
+        warn "Failed to split packet along first 4 " + PROTOCOL_SEPERATOR + ". Raw return: " + slice.to_s
+        return nil
+      end
+
+      if slice.first != PROTOCOL_VERSION.to_s
+        warn "Incompatible protocol version received, expected: " + PROTOCOL_VERSION.to_s + " got: " + slice.first
+        return nil
+      end
+
+      unless valid_packet_type?(Integer(slice[1]))
+        warn "Unknown packet type detected: #{slice[1]}"
+        return nil
+      end
+
+      protocol_version = Integer(slice[0])
+      type = PACKET_TYPES.key(Integer(slice[1]))
+      content_length = Integer(slice[2])
+      body = slice[3]
+
+      raise "Type is #{type.inspect} [#{type.class}]" unless type.is_a?(Symbol)
+
+      return Packet.new(protocol_version, type, content_length, body)
+    end
+
+    def self.create(packet_type, body)
+      Packet.new(PROTOCOL_VERSION, PACKET_TYPES.key(packet_type), body.length, body)
+    end
+
+    def self.valid_packet_type?(packet_type)
+      PACKET_TYPES.values.find { |t| t == packet_type }
+    end
+
+    attr_reader :protocol_version, :type, :content_length, :body
+    def initialize(protocol_version, type, content_length, body)
+      @protocol_version = protocol_version
+      @type = type
+      @content_length = content_length
+      @body = body
+    end
+
+    def encode_header
+      string = ""
+      string += protocol_version.to_s
+      string += PROTOCOL_SEPERATOR
+      string += PACKET_TYPES[type].to_s
+      string += PROTOCOL_SEPERATOR
+      string += content_length.to_s
+      string += PROTOCOL_SEPERATOR
+
+      return string
+    end
+
+    def valid?
+      true
+    end
+
+    def to_s
+      "#{encode_header}#{body}"
+    end
+  end
+    end
+  end
+end