Init

.idea/.gitignore

@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/BattleShit.iml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="Go" enabled="true" />
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/BattleShit.iml" filepath="$PROJECT_DIR$/.idea/BattleShit.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

board.go

@@ -0,0 +1,19 @@
+package main
+
+type board struct {
+	owner  *client
+	width  uint8
+	height uint8
+	matrix [][]square
+}
+
+func newBoard(width, height uint8) *board {
+	b := new(board)
+	b.width = width
+	b.height = height
+	b.matrix = make([][]square, b.height)
+	for i := range b.matrix {
+		b.matrix[i] = make([]square, b.width)
+	}
+	return b
+}

client.go

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+package main
+
+type client struct {
+	Username string
+	ID       int
+	match    *match
+	board    *board
+}

go.mod

@@ -0,0 +1,3 @@
+module BattleShit
+
+go 1.22

main.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net"
+	"os"
+	"time"
+)
+
+const (
+	HOST = "localhost"
+	PORT = "8750"
+	TYPE = "tcp"
+)
+
+func main() {
+	listen, err := net.Listen(TYPE, HOST+":"+PORT)
+	if err != nil {
+		log.Fatal(err)
+		os.Exit(1)
+	}
+	// close listener
+	defer listen.Close()
+	for {
+		conn, err := listen.Accept()
+		if err != nil {
+			log.Fatal(err)
+			os.Exit(1)
+		}
+		go handleRequest(conn)
+	}
+}
+
+func handleRequest(conn net.Conn) {
+	// incoming request
+	buffer := make([]byte, 1024)
+	_, err := conn.Read(buffer)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// write data to response
+	time := time.Now().Format(time.ANSIC)
+	responseStr := fmt.Sprintf("Your message is: %v. Received time: %v", string(buffer[:]), time)
+	conn.Write([]byte(responseStr))
+
+	// close conn
+	conn.Close()
+}

match.go

@@ -0,0 +1,8 @@
+package main
+
+type match struct {
+	host       *client
+	guest      *client
+	hostBoard  board
+	guestBoard board
+}

ship.go

@@ -0,0 +1,78 @@
+package main
+
+type ship struct {
+	name     string
+	shape    uint64
+	board    *board
+	owner    *client
+	x        uint8
+	y        uint8
+	rotation uint8
+}
+
+func (ship *ship) nextSquare() bool {
+	var target uint8 = 8
+	if ship.rotation%2 == 0 {
+		target = 0
+		if ship.x == 0 && ship.y == 0 {
+			ship.x = 8
+			ship.y = 8
+		}
+	}
+	if ship.y == target {
+		return true //stop
+	}
+	if ship.x == target {
+		ship.x = 0
+	}
+	return false
+}
+
+func (ship *ship) placeShip() {
+	var row uint8 = 0
+	var col uint8 = 0
+	for {
+		// Calculate the bit position (0 to 63)
+		bitPos := (7-row)*8 + (7 - col)
+		// Extract the bit value
+		bit := (ship.shape>>bitPos)&1 == 1
+		if bit {
+			square := &ship.board.matrix[row][col]
+			square.ship = ship
+			square.status = 2
+		}
+		if ship.nextSquare() {
+			break
+		}
+	}
+}
+
+func (ship *ship) removeShip() {
+	var row uint8 = 0
+	var col uint8 = 0
+	for {
+		bitPos := (7-row)*8 + (7 - col)
+		bit := (ship.shape>>bitPos)&1 == 1
+		if bit {
+			square := &ship.board.matrix[row][col]
+			if square.status == 2 {
+				square.status = 0
+				square.ship = nil
+			}
+		}
+		if ship.nextSquare() {
+			break
+		}
+	}
+}
+
+func newShip(name string, shape uint64, rotation uint8, owner *client) *ship {
+	this := new(ship)
+	this.name = name
+	this.shape = shape
+	this.owner = owner
+	this.board = owner.board
+	this.rotation = rotation
+	this.placeShip()
+	return this
+}

square.go

@@ -0,0 +1,13 @@
+package main
+
+type square struct {
+	status uint8 //0 is empty, 1 is missed, 2 is alive, 3 is destroyed
+	ship   *ship
+}
+
+func (square *square) hit() uint8 {
+	if square.status%2 == 0 {
+		square.status++
+	}
+	return square.status
+}