From 4b1217d7b1dbefc6492de9009c8cfd3b6d13bc24 Mon Sep 17 00:00:00 2001
From: core <core@coredoes.dev>
Date: Thu, 13 Apr 2023 21:37:39 -0400
Subject: [PATCH] start switching to protobuf for the protocol

---
 protocol/src/pbuf/goodbye_reason.proto        | 11 +++++
 protocol/src/pbuf/message_c2s.proto           | 29 ++++++++++++
 protocol/src/pbuf/message_s2c.proto           | 44 +++++++++++++++++++
 protocol/src/pbuf/planet.proto                | 13 ++++++
 protocol/src/pbuf/player.proto                |  9 ++++
 protocol/src/pbuf/starkingdoms-protocol.proto | 14 ++++++
 protocol/src/pbuf/state.proto                 |  9 ++++
 7 files changed, 129 insertions(+)
 create mode 100644 protocol/src/pbuf/goodbye_reason.proto
 create mode 100644 protocol/src/pbuf/message_c2s.proto
 create mode 100644 protocol/src/pbuf/message_s2c.proto
 create mode 100644 protocol/src/pbuf/planet.proto
 create mode 100644 protocol/src/pbuf/player.proto
 create mode 100644 protocol/src/pbuf/starkingdoms-protocol.proto
 create mode 100644 protocol/src/pbuf/state.proto

diff --git a/protocol/src/pbuf/goodbye_reason.proto b/protocol/src/pbuf/goodbye_reason.proto
new file mode 100644
index 0000000000000000000000000000000000000000..1e23025af05ada10bc885177aeb130af0c495f06
--- /dev/null
+++ b/protocol/src/pbuf/goodbye_reason.proto
@@ -0,0 +1,11 @@
+syntax = "proto3";
+package protocol.goodbye_reason;
+
+enum GoodbyeReason {
+  UnsupportedProtocol = 0;
+  UnexpectedPacket = 1;
+  UnexpectedNextState = 2;
+  UsernameTaken = 3;
+  PingPongTimeout = 4;
+  Done = 5;
+}
\ No newline at end of file
diff --git a/protocol/src/pbuf/message_c2s.proto b/protocol/src/pbuf/message_c2s.proto
new file mode 100644
index 0000000000000000000000000000000000000000..ee8f4d078bd4b69ff92ff280b5e0b5291ff9335d
--- /dev/null
+++ b/protocol/src/pbuf/message_c2s.proto
@@ -0,0 +1,29 @@
+syntax = "proto3";
+package protocol.messagec2s;
+
+import "state.proto";
+import "goodbye_reason.proto";
+
+message MessageC2SHello {
+  enum packet_info { unknown = 0; type = 0x01; }
+
+  uint32 version = 1;             // Version of the protocol. Currently always 1
+  string requested_username = 2;  // The username that the client is requesting.
+  State next_state = 3;           // The state the connection will go into after the handshake.
+}
+
+message MessageC2SGoodbye {
+  enum packet_info { unknown = 0; type = 0x02; }
+
+  GoodbyeReason reason = 1; // The reason the client is disconnecting the server
+}
+
+message MessageC2SChat {
+  enum packet_info { unknown = 0; type = 0x03; }
+
+  string message = 1; // The chat message to sent
+}
+
+message MessageC2SPing {
+  enum packet_info { unknown = 0; type = 0x04; }
+}
\ No newline at end of file
diff --git a/protocol/src/pbuf/message_s2c.proto b/protocol/src/pbuf/message_s2c.proto
new file mode 100644
index 0000000000000000000000000000000000000000..ff90fa0e15706549684819f7a34132ddadb68b50
--- /dev/null
+++ b/protocol/src/pbuf/message_s2c.proto
@@ -0,0 +1,44 @@
+syntax = "proto3";
+package protocol.message_s2c;
+
+import "state.proto";
+import "goodbye_reason.proto";
+import "player.proto";
+import "planet.proto";
+
+message MessageS2CHello {
+  enum packet_info { unknown = 0; type = 0x05; }
+
+  uint32 version = 1;         // The version of the protocol in use. Currently always 1.
+  string given_username = 2;  // The username actually assigned to the player
+  State next_state = 3;       // The state to switch the game into
+}
+
+message MessageS2CGoodbye {
+  enum packet_info { unknown = 0; type = 0x06; }
+
+  GoodbyeReason reason = 1; // The reason for the disconnect
+}
+
+message MessageS2CChat {
+  enum packet_info { unknown = 0; type = 0x07; }
+
+  string from = 1;    // The username of the player who sent the message
+  string message = 2; // The contents of the chat message
+}
+
+message MessageS2CPong {
+  enum packet_info { unknown = 0; type = 0x08; }
+}
+
+message MessageS2CPlayersUpdate {
+  enum packet_info { unknown = 0; type = 0x09; }
+
+  repeated Player players = 1;  // List of all players in the server
+}
+
+message MessageS2CPlanetData {
+  enum packet_info { unknown = 0; type = 0x0a; }
+
+  repeated Planet planets = 1;  // List of all planets on the server
+}
\ No newline at end of file
diff --git a/protocol/src/pbuf/planet.proto b/protocol/src/pbuf/planet.proto
new file mode 100644
index 0000000000000000000000000000000000000000..b85a736ff6d0210a3f8a450912e5dd03f8a1b60c
--- /dev/null
+++ b/protocol/src/pbuf/planet.proto
@@ -0,0 +1,13 @@
+syntax = "proto3";
+package protocol.planet;
+
+message Planet {
+  PlanetType type = 1;  // Type of the planet
+  float x = 2;          // Translation on the X axis, in game units
+  float y = 3;          // Translation on the Y axis, in game units
+  float radius = 4;     // The radius of the planet extending out from (x, y)
+}
+
+enum PlanetType {
+  Earth = 0;
+}
\ No newline at end of file
diff --git a/protocol/src/pbuf/player.proto b/protocol/src/pbuf/player.proto
new file mode 100644
index 0000000000000000000000000000000000000000..d2b8359f6c7b787f98bc80c1f149e893e750f961
--- /dev/null
+++ b/protocol/src/pbuf/player.proto
@@ -0,0 +1,9 @@
+syntax = "proto3";
+package protocol.player;
+
+message Player {
+  float rotation = 1;   // The rotation, clockwise, in degrees, of the player
+  float x = 2;          // The translation on the X axis, in game units, of the player
+  float y = 3;          // The translation on the Y axis, in game units, of the player
+  string username = 4;  // The username of the player
+}
\ No newline at end of file
diff --git a/protocol/src/pbuf/starkingdoms-protocol.proto b/protocol/src/pbuf/starkingdoms-protocol.proto
new file mode 100644
index 0000000000000000000000000000000000000000..9381472753e448ea9c4133b2b81e51e915608e4c
--- /dev/null
+++ b/protocol/src/pbuf/starkingdoms-protocol.proto
@@ -0,0 +1,14 @@
+syntax = "proto3";
+package protocol;
+
+import public "message_c2s.proto";
+import public "state.proto";
+import public "goodbye_reason.proto";
+import public "message_s2c.proto";
+import public "player.proto";
+import public "planet.proto";
+
+message PacketWrapper {
+  int64 packet_id = 1;    // What is the Packet ID of this packet?
+  bytes packet_data = 2;  // Protobuf-encoded bytearray containing the actual packet
+}
\ No newline at end of file
diff --git a/protocol/src/pbuf/state.proto b/protocol/src/pbuf/state.proto
new file mode 100644
index 0000000000000000000000000000000000000000..fb8b36f9cb5b69a7b9bbba07e5da15e680ce9079
--- /dev/null
+++ b/protocol/src/pbuf/state.proto
@@ -0,0 +1,9 @@
+syntax = "proto3";
+package protocol.state;
+
+import "state.proto";
+
+enum State {
+  Handshake = 0;
+  Play = 1;
+}
\ No newline at end of file