feat(deck-hexv1): implement experimental HexV1 card deck

backend/decks/decks.go

@@ -13,6 +13,10 @@ func DeckFromInterface(cardDeckId int, cardDeck bson.D) types.CardDeck {
 		deck := Classic{}
 		bson.Unmarshal(bsonBytes, &deck)
 		return &deck
+	case 1:
+		deck := HexV1{}
+		bson.Unmarshal(bsonBytes, &deck)
+		return &deck
 	}
 
 	return nil
@@ -26,6 +30,10 @@ func CardFromInterface(cardDeckId int, card bson.D) types.Card {
 		deck := ClassicCard{}
 		bson.Unmarshal(bsonBytes, &deck)
 		return &deck
+	case 1:
+		deck := HexV1Card{}
+		bson.Unmarshal(bsonBytes, &deck)
+		return &deck
 	}
 	return nil
 }

backend/decks/hexv1.go

@@ -0,0 +1,205 @@
+package decks
+
+import (
+	"fmt"
+	"math/rand/v2"
+
+	"github.com/HexCardGames/HexDeck/types"
+	"github.com/HexCardGames/HexDeck/utils"
+)
+
+type HexV1 struct {
+	room        *types.Room
+	CardsPlayed []*HexV1Card
+	PlayerOrder []int
+	ActiveIndex int
+}
+
+type HexV1Card struct {
+	Symbol       string
+	Color        string
+	NumericValue int
+}
+
+var HexV1Colors = []string{"blue", "green", "yellow", "purple"}
+var HexV1ActionCards = []string{"shuffle", "skip", "draw", "swap"}
+
+func (deck *HexV1) Init(room *types.Room) {
+	deck.room = room
+	deck.PlayerOrder = make([]int, len(room.Players))
+	deck.ActiveIndex = 0
+
+	deck.room.PlayersMutex.Lock()
+	defer deck.room.PlayersMutex.Unlock()
+	for i, player := range deck.room.Players {
+		deck.PlayerOrder[i] = i
+		player.Mutex.Lock()
+		defer player.Mutex.Unlock()
+		deck.drawMany(player, 8)
+	}
+}
+
+func (deck *HexV1) SetRoom(room *types.Room) {
+	deck.room = room
+}
+
+func (deck *HexV1) IsEmpty() bool {
+	return false
+}
+
+func (deck *HexV1) getTopCard() *HexV1Card {
+	if len(deck.CardsPlayed) == 0 {
+		return nil
+	}
+	return deck.CardsPlayed[len(deck.CardsPlayed)-1]
+}
+
+func (deck *HexV1) GetTopCard() types.Card {
+	return deck.getTopCard()
+}
+
+func (deck *HexV1) generateCard() *HexV1Card {
+	cardType := rand.IntN(16 + len(HexV1ActionCards))
+	cardColor := HexV1Colors[rand.IntN(len(HexV1Colors))]
+	if cardType < 16 {
+		return &HexV1Card{
+			Symbol:       fmt.Sprintf("%x", cardType),
+			Color:        cardColor,
+			NumericValue: cardType,
+		}
+	}
+	cardSymbol := HexV1ActionCards[cardType-16]
+	if rand.IntN(100) <= 10 {
+		cardColor = "rainbow"
+	}
+	return &HexV1Card{
+		Symbol:       "action:" + cardSymbol,
+		Color:        cardColor,
+		NumericValue: 3,
+	}
+}
+
+func (deck *HexV1) drawCard(player *types.Player) types.Card {
+	card := deck.generateCard()
+	player.Cards = append(player.Cards, card)
+	return card
+}
+
+func (deck *HexV1) drawMany(player *types.Player, cards int) {
+	for i := 0; i < cards; i++ {
+		deck.drawCard(player)
+	}
+}
+
+func (deck *HexV1) DrawCard() types.Card {
+	// Can't draw another card before wildcard color is selected
+	topCard := deck.getTopCard()
+	if topCard != nil && topCard.Color == "rainbow" {
+		return nil
+	}
+
+	card := deck.drawCard(deck.getPlayer(deck.ActiveIndex))
+	deck.nextPlayer()
+	return card
+}
+
+func (deck *HexV1) getNextValidIndex(index int) int {
+	if len(deck.room.Players) == 0 || len(deck.PlayerOrder) == 0 {
+		return -1
+	}
+	checkIndex := utils.Mod(index, len(deck.PlayerOrder))
+	for deck.PlayerOrder[checkIndex] >= len(deck.room.Players) {
+		checkIndex = utils.Mod(checkIndex+1, len(deck.PlayerOrder))
+	}
+	return checkIndex
+}
+
+func (deck *HexV1) getPlayer(index int) *types.Player {
+	playerIndex := deck.getNextValidIndex(index)
+	if playerIndex == -1 {
+		return nil
+	}
+	return deck.room.Players[deck.PlayerOrder[playerIndex]]
+}
+
+func (deck *HexV1) getNextPlayerIndex() int {
+	return deck.getNextValidIndex(deck.ActiveIndex + 1)
+}
+
+func (deck *HexV1) nextPlayer() {
+	deck.ActiveIndex = deck.getNextPlayerIndex()
+}
+
+func (deck *HexV1) IsPlayerActive(target *types.Player) bool {
+	return deck.getPlayer(deck.ActiveIndex) == target
+}
+
+func (deck *HexV1) CanPlay(card types.Card) bool {
+	topCard := deck.getTopCard()
+	checkCard := card.(*HexV1Card)
+	if topCard == nil || checkCard == nil {
+		return topCard == nil
+	}
+	return topCard.Color != "rainbow" && (checkCard.Color == "rainbow" || checkCard.Color == topCard.Color || checkCard.Symbol == topCard.Symbol)
+}
+
+func (deck *HexV1) PlayCard(card types.Card) bool {
+	if !deck.CanPlay(card) {
+		return false
+	}
+	deckCard := card.(*HexV1Card)
+	targetPlayer := deck.getPlayer(deck.ActiveIndex)
+	nextPlayer := deck.getPlayer(deck.getNextPlayerIndex())
+
+	if deckCard.Symbol == "action:skip" && deckCard.Color != "rainbow" {
+		deck.nextPlayer()
+	} else if deckCard.Symbol == "action:draw" {
+		amount := 3
+		topCard := deck.getTopCard()
+		if topCard != nil {
+			amount = topCard.NumericValue
+		}
+		deck.drawMany(nextPlayer, amount)
+	} else if deckCard.Symbol == "action:shuffle" {
+		utils.ShuffleSlice(&deck.PlayerOrder)
+	} else if deckCard.Symbol == "action:swap" {
+		p1Cards := targetPlayer.Cards
+		p2Cards := nextPlayer.Cards
+		targetPlayer.Cards = p2Cards
+		nextPlayer.Cards = p1Cards
+	}
+
+	if deckCard.Color != "rainbow" {
+		deck.nextPlayer()
+	}
+
+	deck.CardsPlayed = append(deck.CardsPlayed, deckCard)
+	return true
+}
+
+func (deck *HexV1) UpdatePlayedCard(cardData interface{}) types.Card {
+	topCard := deck.getTopCard()
+	if topCard.Color != "rainbow" {
+		return nil
+	}
+	updateData, ok := cardData.(map[string]interface{})
+	if !ok {
+		return nil
+	}
+	newColor, ok := updateData["Color"].(string)
+	if !ok {
+		return nil
+	}
+
+	for _, color := range HexV1Colors {
+		if newColor == color {
+			deck.nextPlayer()
+			if topCard.Symbol == "action:skip" {
+				deck.nextPlayer()
+			}
+			topCard.Color = color
+			return topCard
+		}
+	}
+	return nil
+}

backend/game/game.go

@@ -39,7 +39,7 @@ func CreateRoom() *types.Room {
 		GameState:    types.StateLobby,
 		Players:      make([]*types.Player, 0),
 		PlayersMutex: &sync.Mutex{},
-		CardDeckId:   0,
+		CardDeckId:   1,
 	}
 
 	db.Conn.InsertRoom(newRoom)

backend/utils/utils.go

@@ -34,5 +34,8 @@ func ShuffleSlice[T any](slice *([]T)) {
 }
 
 func Mod(a, b int) int {
+	if b == 0 {
+		return 0
+	}
 	return (a%b + b) % b
 }