Cloud native project practice DevOps(GitOps)+K8S+BPF+SRE, from 0 to 1 using Golang to develop production-grade Mahjong game server — Chapter 8

Mahjong tiles abstract and encode Mahjong tiles

Mahjong game business in one sentence:

• Three-player mode <Fannie and Freddie> onlyarticleThe child andcylinderThe two suits are the same72CARDS.
• Four-player mode <To the last> usecylinder,article,wanThe three suits are total108CARDS.

series

1. Golang develops production grade Mahjong game server – Part 1
2. Golang develops production grade Mahjong game server – Part 2
3. Golang development production grade mahjong game server – chapter 3
4. Golang development production grade Mahjong game server – chapter 4
5. Golang development production grade Mahjong game server – chapter 5
6. Golang development production grade Mahjong game server – chapter 6
7. Golang development production grade Mahjong game server – chapter 7

introduce

This will be a complete, fully implemented Golang game server development tutorial series for DevOps/GitOps and cloud processes on Kubernetes.

This series of tutorials is a complete teardown of the open source Nanoserver project, designed to help you get started on the Golang server backend. Understand the essence of Golang development through practice — Share memory by communication.

The project may also involve work on Linux performance tuning (BPF related tools) and system assurance (SRE).

Step By Step development Mahjong Server

• Monomer architectureunderstandMahjong ServerBusiness – >Nano Distributed Game Server + Micro serviceTransformation.
• Demo: go – mahjong – server

Tiles are abstract

Define Tile struct

type Tile struct {
	Id    int
	Suit  int
	Rank  int
	Index int
}
Copy the code

• Id:108CARDS, use0 ~ 107Identify each card.
• Suit: Three colors, with0 ~ 2Identify each suit (0:article, 1:cylinder, 2:wan).
• Rank:9Seed points, with1 ~ 9Signs (e.g. : 1, 9, 1 cylinder, 9 cylinder, 10,000, 90,000, etc.) .
• Index: index (bar:1 ~ 9, drum:11 ~ 19M:21 to 29).

Look at a table

Three suits and the Index of each type of card:

ID numbers of all cards (here 108) :

Coding of actual combat

Get Tile by ID

An arithmetic problem. There’s nothing to say.

• Three suits, each of them9Class different cards, and each class has4The same card.

internal/game/tile.go

func TileFromID(id int) *Tile {
	if id < 0 {
		panic("illegal tile id")}var (
		tmp = id / 4
		h   = tmp / 9
		v   = tmp%9 + 1
		i   = h*10 + v
	)
	return &Tile{Suit: h, Rank: v, Index: i, Id: id}
}
Copy the code

Write unit test functions

Right-click on the TileFromID Function and select Generate Unit Tests For Function, For which we write a Unit test Function.

internal/game/tile_test.go

func TestTileFromID(t *testing.T) {
	type args struct {
		id int
	}
	tests := []struct {
		name string
		args args
		want *Tile
	}{
    // Define a bunch of use cases
		{"1", args{id: 0}, &Tile{Suit: 0, Rank: 1, Index: 1, Id: 0}},
		{"1", args{id: 1}, &Tile{Suit: 0, Rank: 1, Index: 1, Id: 1}},
		{"1", args{id: 2}, &Tile{Suit: 0, Rank: 1, Index: 1, Id: 2}},
		{"1", args{id: 3}, &Tile{Suit: 0, Rank: 1, Index: 1, Id: 3}},
		{"Nine", args{id: 35}, &Tile{Suit: 0, Rank: 9, Index: 9, Id: 35}},
		{"1 barrel", args{id: 36}, &Tile{Suit: 1, Rank: 1, Index: 11, Id: 36}},
		{"1 barrel", args{id: 37}, &Tile{Suit: 1, Rank: 1, Index: 11, Id: 37}},
		{"1 barrel", args{id: 38}, &Tile{Suit: 1, Rank: 1, Index: 11, Id: 38}},
		{"1 barrel", args{id: 39}, &Tile{Suit: 1, Rank: 1, Index: 11, Id: 39}},
		{"9 cone", args{id: 71}, &Tile{Suit: 1, Rank: 9, Index: 19, Id: 71}},
		{"10000", args{id: 72}, &Tile{Suit: 2, Rank: 1, Index: 21, Id: 72}},
		{"10000", args{id: 73}, &Tile{Suit: 2, Rank: 1, Index: 21, Id: 73}},
		{"10000", args{id: 74}, &Tile{Suit: 2, Rank: 1, Index: 21, Id: 74}},
		{"10000", args{id: 75}, &Tile{Suit: 2, Rank: 1, Index: 21, Id: 75}},
		{"90000", args{id: 107}, &Tile{Suit: 2, Rank: 9, Index: 29, Id: 107}}},for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			ifgot := TileFromID(tt.args.id); ! reflect.DeepEqual(got, tt.want) { t.Errorf("TileFromID() = %v, want %v", got, tt.want)
			}
		})
	}
}
Copy the code

Perform:

cd internal/game/mahjong 
go test -v tile_test.go tile.go mahjong.go
Copy the code

I am weishao wechat: uuhells123 public number: hackers afternoon tea add my wechat (mutual learning exchange), pay attention to the public number (for more learning materials ~)Copy the code