syntax = "proto3";
package protocol;

message Geometry {
  uint32 voxel = 1;
  optional string faceName = 2;
  repeated int32 at = 3;
  repeated float positions = 4 [packed = true];
  repeated float uvs = 5 [packed = true];
  repeated int32 indices = 6 [packed = true];
  repeated int32 lights = 7 [packed = true];
}

message Mesh {
  int32 level = 1;
  repeated Geometry geometries = 2;
}

message Chunk {
  int32 x = 1;
  int32 z = 2;
  string id = 3;
  repeated Mesh meshes = 4;
  repeated uint32 voxels = 5 [packed = true];
  repeated uint32 lights = 6 [packed = true];
}

message Peer {
  string id = 1;
  string username = 2;
  string metadata = 3;
}

message Entity {
  enum Operation {
    CREATE = 0;
    DELETE = 1;
    UPDATE = 2;
  }

  Operation operation = 1;

  string id = 2;
  string type = 3;
  string metadata = 4;
}

message Event {
  string name = 1;
  string payload = 2;
}

message Method {
  string name = 1;
  string payload = 2;
}

message Update {
  int32 vx = 1;
  int32 vy = 2;
  int32 vz = 3;
  uint32 voxel = 4;
  uint32 light = 5;
}

message ChatMessage {
  string type = 1;
  string sender = 2;
  string body = 3;
}

message Message {
  enum Type {
    INIT = 0;
    JOIN = 1;
    LEAVE = 2;
    ERROR = 3;
    PEER = 4;
    ENTITY = 5;
    LOAD = 6;
    UNLOAD = 7;
    UPDATE = 8;
    METHOD = 9;
    CHAT = 10;
    TRANSPORT = 11;
    EVENT = 12;
    ACTION = 13;
    STATS = 14;
  }

  Type type = 1;
  string json = 2;
  string text = 3;

  Method method = 4;
  ChatMessage chat = 5;

  repeated Peer peers = 6;
  repeated Entity entities = 7;
  repeated Chunk chunks = 8;
  repeated Event events = 9;
  repeated Update updates = 10;
}