mchess-server/server/game.go

114 lines
2.4 KiB
Go
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package server
import (
"log"
"math/rand"
)
type chessGame struct {
id int
players [2]Player
currentTurnPlayer Player
}
const (
WhiteToMove = 0
BlackToMove = 1
CheckPlayerChange = 2
)
func NewChessGame(gameId int, players [2]Player) *chessGame {
var game chessGame = chessGame{
players: players,
id: gameId,
}
return &game
}
func (game *chessGame) handle() {
gameState := WhiteToMove
game.currentTurnPlayer = game.players[0]
var move *chessMove
var messageType int
var receivedMessage []byte
WriteMessageToPlayer(&game.players[0], []byte("bd init"), 1)
WriteMessageToPlayer(&game.players[1], []byte("bd init"), 1)
WriteMessageToPlayer(&game.players[0], []byte("cl white"), 1)
WriteMessageToPlayer(&game.players[1], []byte("cl black"), 1)
for {
switch gameState {
case WhiteToMove:
var err error
messageType, receivedMessage, err = ReadMessageFromPlayer(&game.players[0])
if err != nil {
log.Println("Error during message reading:", err)
return
}
move, err = parseMove(string(receivedMessage))
log.Println("Player 0 moved: ", move)
if err != nil {
log.Println("Game: ", game.id, err)
return
}
gameState = CheckPlayerChange
case BlackToMove:
var err error
messageType, receivedMessage, err = ReadMessageFromPlayer(&game.players[1])
if err != nil {
log.Println("Error during message reading:", err)
return
}
move, err = parseMove(string(receivedMessage))
log.Println("Player 1 moved: ", move)
if err != nil {
log.Println("Game: ", game.id, err)
return
}
gameState = CheckPlayerChange
case CheckPlayerChange:
if move.realMove {
if game.currentTurnPlayer.id == game.players[0].id {
game.currentTurnPlayer = game.players[1]
gameState = BlackToMove
} else {
game.currentTurnPlayer = game.players[0]
gameState = WhiteToMove
}
err := WriteMessageToPlayer(&game.currentTurnPlayer, receivedMessage, messageType)
if err != nil {
log.Println("Error during message writing:", err)
break
}
} else {
if game.currentTurnPlayer.id == game.players[0].id {
gameState = WhiteToMove
} else {
gameState = BlackToMove
}
}
}
log.Println("GameState = ", gameState)
}
}
func addPlayersToGame(players [2]Player) {
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log.Printf("Adding players %d and %d to new game", players[0].id, players[1].id)
game := NewChessGame(rand.Int(), players)
go game.handle()
}