README
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GoWorld
Scalable Distributed Game Server Engine with Hot Reload in Golang
中文资料： 游戏服务器介绍 目录结构说明 使用GoWorld轻松实现分布式聊天服务器 欢迎加入Go服务端开发交流群：662182346
Features
- Spaces & Entities: manage multiple spaces and entities with AOI support
- Distributed: increase server capacity by using more machines
- Hot-Swappable: update game logic by restarting server process
- Multiple Communication Protocols: supports TCP, KCP and WebSocket
- Traffic Compression & Encryption: traffic between clients and servers can be compressed and encrypted
Architecture
Introduction
GoWorld server adopts an entity framework, in which entities represent all players, monsters, NPCs. Entities in the same space can visit each other directly by calling methods or access attributes. Entities in different spaces can call each over using RPC.
A GoWorld server consists of one dispatcher, one or more games and one or more gates. The gates are responsible for handling client connections and receive/send packets from/to clients. The games manages all entities and runs all game logic. The dispatcher is responsible for redirecting packets among games and between games and gates.
The game processes are hot-swappable.
We can swap a game by sending SIGHUP to the process and restart the process with -restore parameter to bring game
back to work but with the latest executable image. This feature enables updating server-side logic or fixing server bugs
transparently without significant interference of online players.
Installing GoWorld
GoWorld requries Go 1.10.x to install.
go get github.com/xiaonanln/goworld/cmd/...
go get -u github.com/golang/dep/cmd/dep
cd $GOPATH/src/github.com/xiaonanln/goworld
dep ensure
GoWorld uses Dep to manage packages.
For Chinese only: 中国的朋友可能会碰到网络问题，那么您可以通过点击下载vendor.tar.gz，并将其解压到goworld根目录下。
Manage GoWorld Servers
Use command goworld to build, start, stop and reload game servers.
Build Example Chatroom Server:
$ goworld build examples/chatroom_demo
Start Example Chatroom Server: (dispatcher -> game -> gate)
$ goworld start examples/chatroom_demo
Stop Game Server (gate -> game -> dispatcher):
$ goworld stop examples/chatroom_demo
Reload Game Servers:
$ goworld reload examples/chatroom_demo
Reload will reboot game processes with the current executable while preserving all game server states. However, it does not work on Windows.
List Server Processes:
$ goworld status examples/chatroom_demo
> 1 dispatcher running, 1/1 gates running, 1/1 games (examples/chatroom_demo) running
> 2763 dispatcher /home/ubuntu/go/src/github.com/xiaonanln/goworld/components/dispatcher/dispatcher -dispid 1
> 2770 chatroom_demo /home/ubuntu/go/src/github.com/xiaonanln/goworld/examples/chatroom_demo/chatroom_demo -gid 1
> 2779 gate /home/ubuntu/go/src/github.com/xiaonanln/goworld/components/gate/gate -gid 1
Demos
Chatroom Demo
The chatroom demo is a simple implementation of chatroom server and client. It illustrates how GoWorld can also be used for games which don't divide players by spaces.
The chatroom demo provides following features:
- register & login
- send chat message
- switch chatrooms
Build Server:
goworld build examples/chatroom_demo
Run Server:
goworld start examples/chatroom_demo
Chatroom Demo Client:
Chatroom demo client implements the client-server protocol in Javascript.
The client for chatroom demo is hosted at github.com/xiaonanln/goworld-chatroom-demo-client.
The project was created and built in Cocos Creater 1.5. A running server and client demo can also be found at http://goworldgs.com/chatclient/.
Unity Demo
Unity Demo is a simple multiple player monster shooting game to show how spaces and entities of GoWorld can be used to create multiple player online games.
- register & login
- move players in space
- summon monsters
- player shoot monsters
- monsters attack players
Developing features:
- Hit effects
- Players migrate among multiple spaces
- Server side map navigation
Build Server:
goworld build examples/unity_demo
Run Server:
goworld start examples/unity_demo
Unity Demo Client:
Unity demo client implements the client-server protocol in C#. The client for unity demo is hosted at https://github.com/xiaonanln/goworld-unity-demo. The project was created and built in Unity 2017.1.
You can try the demo by downloading GoWorldUnityDemo.zip. The demo connects to a goworld server on Amazon EC2 instance.
Documentation
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Index ¶
- func AddCallback(d time.Duration, callback func())
- func AddTimer(d time.Duration, callback func())
- func Call(id EntityID, method string, args ...interface{})
- func CallNilSpaces(method string, args ...interface{})
- func CallService(serviceName string, method string, args ...interface{})
- func Entities() entity.EntityMap
- func Exists(typeName string, entityID EntityID, callback storage.ExistsCallbackFunc)
- func GetGameID() uint16
- func GetKVDB(key string, callback kvdb.KVDBGetCallback)
- func GetOrPutKVDB(key string, val string, callback kvdb.KVDBGetOrPutCallback)
- func GetServiceEntityID(serviceName string) common.EntityID
- func ListAttr() *entity.ListAttr
- func ListEntityIDs(typeName string, callback storage.ListCallbackFunc)
- func ListGameIDs() []uint16
- func LoadEntityAnywhere(typeName string, entityID EntityID)
- func MapAttr() *entity.MapAttr
- func Post(callback post.PostCallback)
- func PutKVDB(key string, val string, callback kvdb.KVDBPutCallback)
- func RegisterEntity(typeName string, entityPtr entity.IEntity) *entity.EntityTypeDesc
- func RegisterService(typeName string, entityPtr entity.IEntity)
- func RegisterSpace(spacePtr entity.ISpace)
- func Run()
- type Entity
- type EntityID
- type Space
- type Vector3
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func AddCallback ¶ added in v0.1.4
AddTimer adds a timer to be executed after specified duration
func AddTimer ¶ added in v0.1.4
AddTimer adds a repeat timer to be executed every specified duration
func CallNilSpaces ¶ added in v0.1.3
func CallNilSpaces(method string, args ...interface{})
CallNilSpaces calls methods of all nil spaces on all games
func CallService ¶ added in v0.1.3
CallService calls a service entity
func Exists ¶
func Exists(typeName string, entityID EntityID, callback storage.ExistsCallbackFunc)
Exists checks if entityID exists in entity storage
returns result in callback
func GetGameID ¶
func GetGameID() uint16
GetGameID gets the local server ID
server ID is a uint16 number starts from 1, which should be different for each servers server ID is also in the game config section name of goworld.ini
func GetKVDB ¶
func GetKVDB(key string, callback kvdb.KVDBGetCallback)
GetKVDB gets value of key from KVDB
func GetOrPutKVDB ¶
func GetOrPutKVDB(key string, val string, callback kvdb.KVDBGetOrPutCallback)
GetOrPut gets value of key from KVDB, if val not exists or is "", put key-value to KVDB.
func GetServiceEntityID ¶ added in v0.1.4
GetServiceEntityID returns the entityid of the service
func ListEntityIDs ¶
func ListEntityIDs(typeName string, callback storage.ListCallbackFunc)
ListEntityIDs gets all saved entity ids in storage, may take long time and block the main routine
returns result in callback
func LoadEntityAnywhere ¶
LoadEntityAnywhere loads the specified entity from entity storage
func Post ¶
func Post(callback post.PostCallback)
Post posts a callback to be executed It is almost same as AddCallback(0, callback)
func PutKVDB ¶
func PutKVDB(key string, val string, callback kvdb.KVDBPutCallback)
PutKVDB puts key-value to KVDB
func RegisterEntity ¶
func RegisterEntity(typeName string, entityPtr entity.IEntity) *entity.EntityTypeDesc
RegisterEntity registers the entity type so that entities can be created or loaded
returns the entity type description object which can be used to define more properties of entity type
func RegisterService ¶ added in v0.1.4
RegisterService registeres an service type After registeration, the service entity will be created automatically on some game
func RegisterSpace ¶
RegisterSpace registers the space entity type.
All spaces will be created as an instance of this type
Types ¶
type Entity ¶ added in v0.1.4
func CreateEntityLocally ¶
CreateEntityLocally creates a entity on the local server
returns EntityID
type EntityID ¶ added in v0.1.4
func CreateEntityAnywhere ¶
CreateEntityAnywhere creates a entity on any server
func CreateSpaceAnywhere ¶
CreateSpaceAnywhere creates a space with specified kind in any game server
func GetNilSpaceID ¶ added in v0.1.4
GetNilSpaceID returns the Entity ID of nil space on the specified game
type Space ¶ added in v0.1.4
func CreateSpaceLocally ¶
CreateSpaceLocally creates a space with specified kind in the local game server
returns the space EntityID
func GetNilSpace ¶ added in v0.1.4
func GetNilSpace() *Space
GetNilSpace returns the nil space on this game Nil space is a special space with Kind = 0. Nil space is the default space for all created entities. Each game has one nil space with fixed EntityID for each game, which can be acquired by calling `GetNilSpaceID`
Since nil game exists on each game with fixed EntityID, an entity can migrate to target game by calling `e.EnterSpace(GetNilSpaceID(gameid), Vector3{})`
Source Files
Directories
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| Path | Synopsis |
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cmd
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components
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engine
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lib/gwsnappy
Package snappy implements the snappy block-based compression format.
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Package snappy implements the snappy block-based compression format. |
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examples
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ext
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