go/src/hearts/logic/table/table.go - release.projects.croupier - Git at Google

 // Copyright 2015 The Vanadium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.

 // table contains and manages the logic half of the game state

 package table

 import (
 	"golang.org/x/mobile/exp/sprite"
 	"hearts/img/direction"
 	"hearts/logic/card"
 	"hearts/logic/player"
 	"math/rand"
 	"sort"
 )

 // Returns a table instance with player set length numPlayers
 func InitializeGame(numPlayers int, texs map[string]sprite.SubTex) *Table {
 	players := make([]*player.Player, 0)
 	for i := 0; i < numPlayers; i++ {
 		players = append(players, player.NewPlayer(i))
 	}
 	t := makeTable(players)
 	t.GenerateClassicCards()
 	t.NewRound()
 	return t
 }

 // Given a group of players, returns a table instance with that group as its player set
 func makeTable(p []*player.Player) *Table {
 	return &Table{
 		players:      p,
 		trick:        make([]*card.Card, len(p)),
 		firstPlayer:  -1,
 		allCards:     nil,
 		heartsBroken: false,
 		firstTrick:   true,
 		winCondition: 100,
 		dir:          direction.None,
 	}
 }

 type Table struct {
 	// players contains all players in the game, indexed by playerIndex
 	players []*player.Player
 	// trick contains all cards in the current trick, indexed by the playerIndex of the player who played them
 	trick []*card.Card
 	// firstPlayer is the index in trick of the card played first
 	firstPlayer int
 	// allCards contains all 52 cards in the deck. GenerateCards() populates this
 	allCards []*card.Card
 	// heartsBroken returns true if a heart has been played yet in the round, otherwise false
 	heartsBroken bool
 	// firstTrick returns true if the current trick is the first in the round, otherwise false
 	firstTrick bool
 	// winCondition is the number of points needed to win the game
 	// traditionally 100, could set higher or lower for longer or shorter game
 	winCondition int
 	// dir is the current round's passing direction
 	dir direction.Direction
 }

 // Returns the player set of t
 func (t *Table) GetPlayers() []*player.Player {
 	return t.players
 }

 // Returns the current trick of t
 func (t *Table) GetTrick() []*card.Card {
 	return t.trick
 }

 // Returns the index in t.players and t.trick of the designated first player in the current round
 func (t *Table) GetFirstPlayer() int {
 	return t.firstPlayer
 }

 // Returns the deck of all cards stored in t
 func (t *Table) GetAllCards() []*card.Card {
 	return t.allCards
 }

 func (t *Table) GetDir() direction.Direction {
 	return t.dir
 }

 // Sets the firstplayer variable of t to index
 func (t *Table) SetFirstPlayer(index int) {
 	t.firstPlayer = index
 }

 // Returns the index of the player whose turn it is, -1 if this cannot be determined at this time
 func (t *Table) WhoseTurn() int {
 	allNil := true
 	for i, c := range t.trick {
 		nextPlayerIndex := (i + 1) % len(t.players)
 		if c != nil {
 			allNil = false
 			if t.trick[nextPlayerIndex] == nil {
 				return nextPlayerIndex
 			}
 		}
 	}
 	if allNil {
 		return t.firstPlayer
 	}
 	return -1
 }

 // This function generates a traditional deck of 52 cards, with 13 in each of the four suits
 // Each card has a suit (Club, Diamond, Spade, or Heart)
 // Each card also has a face from Two to Ace (Aces are high in Hearts)
 func (t *Table) GenerateClassicCards() {
 	cardsPerSuit := 13
 	t.allCards = make([]*card.Card, 0)
 	cardFaces := []card.Face{card.Two, card.Three, card.Four, card.Five, card.Six, card.Seven, card.Eight, card.Nine,
 		card.Ten, card.Jack, card.Queen, card.King, card.Ace}
 	for i := 0; i < cardsPerSuit; i++ {
 		t.allCards = append(t.allCards, card.NewCard(cardFaces[i], card.Club))
 		t.allCards = append(t.allCards, card.NewCard(cardFaces[i], card.Diamond))
 		t.allCards = append(t.allCards, card.NewCard(cardFaces[i], card.Spade))
 		t.allCards = append(t.allCards, card.NewCard(cardFaces[i], card.Heart))
 	}
 	sort.Sort(card.CardSorter(t.allCards))
 }

 // Given a card and the index of its player, adds that card to the appropriate spot in the current trick
 func (t *Table) SetPlayedCard(c *card.Card, playerIndex int) {
 	t.trick[playerIndex] = c
 	if c.GetSuit() == card.Heart && !t.heartsBroken {
 		t.heartsBroken = true
 	}
 }

 // Returns true if there are exactly three cards being passed (specified by Hearts logic)
 func (t *Table) ValidPass(cardsPassed []*card.Card) bool {
 	return len(cardsPassed) == 3
 }

 // Returns whether it is valid for the player at playerIndex to play a card
 func (t *Table) ValidPlayOrder(playerIndex int) bool {
 	return t.WhoseTurn() == playerIndex
 }

 // Given a card and the index of its player, returns "" if this move was valid based on game logic
 // Otherwise returns a string explaining the error
 func (t *Table) ValidPlayLogic(c *card.Card, playerIndex int) string {
 	validPlay := ""
 	player := t.players[playerIndex]
 	if t.firstPlayer == playerIndex {
 		if !t.firstTrick {
 			if c.GetSuit() != card.Heart || t.heartsBroken {
 				return validPlay
 			} else {
 				if player.HasOnlyHearts() {
 					return validPlay
 				} else {
 					return "Hearts have not been broken"
 				}
 			}
 		} else if c.GetSuit() == card.Club && c.GetFace() == card.Two {
 			return validPlay
 		} else {
 			return "Must open with the Two of Clubs"
 		}
 	} else {
 		firstPlayedSuit := t.trick[t.firstPlayer].GetSuit()
 		if c.GetSuit() == firstPlayedSuit || !player.HasSuit(firstPlayedSuit) {
 			if !t.firstTrick {
 				return validPlay
 			} else if !c.WorthPoints() {
 				return validPlay
 			} else if player.HasAllPoints() {
 				return validPlay
 			} else {
 				return "Point cards not allowed in the first round"
 			}
 		} else {
 			return "Must follow suit"
 		}
 	}
 	return "Invalid play"
 }

 // Returns true if all players have their initial dealt hands
 func (t *Table) AllDoneDealing() bool {
 	for _, p := range t.players {
 		if len(p.GetHand()) == 0 {
 			return false
 		}
 	}
 	return true
 }

 // Returns true if all players have taken the cards passed to them
 func (t *Table) AllDonePassing() bool {
 	for _, p := range t.players {
 		if !p.GetDonePassing() {
 			return false
 		}
 	}
 	return true
 }

 // Returns true if all players have finished looking at their scores
 func (t *Table) AllReadyForNewRound() bool {
 	for _, p := range t.players {
 		if !p.GetDoneScoring() {
 			return false
 		}
 	}
 	return true
 }

 // Returns true if all players are out of cards, indicating the end of a round
 func (t *Table) RoundOver() bool {
 	for _, p := range t.players {
 		if len(p.GetHand()) > 0 {
 			return false
 		}
 	}
 	return true
 }

 // Calculates who should take the cards in the current trick and sends them. Sets next first player accordingly. Returns true if the round is over
 func (t *Table) SendTrick() (bool, int) {
 	trickSuit := t.trick[t.firstPlayer].GetSuit()
 	highestCardFace := card.Two
 	highestIndex := -1
 	for i := 0; i < len(t.trick); i++ {
 		curCard := t.trick[i]
 		if curCard.GetSuit() == trickSuit && curCard.GetFace() >= highestCardFace {
 			highestCardFace = curCard.GetFace()
 			highestIndex = i
 		}
 	}
 	// resets all players' donePlaying bools
 	for _, p := range t.players {
 		p.SetDonePlaying(false)
 	}
 	// clear trick
 	t.players[highestIndex].TakeTrick(t.trick)
 	t.trick = make([]*card.Card, len(t.players))
 	if t.firstTrick {
 		t.firstTrick = false
 	}
 	if t.RoundOver() {
 		return true, highestIndex
 	}
 	// set first player for next trick to whoever received the current trick
 	t.SetFirstPlayer(highestIndex)
 	return false, highestIndex
 }

 // Returns the score of the current round
 // Accounts for a player possibly shooting the moon
 func (t *Table) ScoreRound() []int {
 	allPoints := 26
 	roundScores := make([]int, len(t.players))
 	shotMoon := false
 	shooter := -1
 	for i := 0; i < len(t.players); i++ {
 		roundScores[i] = t.players[i].CalculateScore()
 		if roundScores[i] == allPoints {
 			shotMoon = true
 			shooter = i
 		}
 	}
 	if shotMoon {
 		for i := 0; i < len(t.players); i++ {
 			if i == shooter {
 				roundScores[i] = 0
 			} else {
 				roundScores[i] = allPoints
 			}
 		}
 	}
 	return roundScores
 }

 // Adds the scores of the current round to the players total scores
 func (t *Table) UpdatePlayerScores(roundScores []int) {
 	for i := 0; i < len(t.players); i++ {
 		t.players[i].UpdateScore(roundScores[i])
 	}
 }

 // Returns set of hands with random, even card distribution
 func (t *Table) Deal() [][]*card.Card {
 	numPlayers := len(t.players)
 	allHands := make([][]*card.Card, numPlayers)
 	shuffle := rand.Perm(len(t.allCards))
 	for i := 0; i < len(t.allCards); i++ {
 		allHands[i%numPlayers] = append(allHands[i%numPlayers], t.allCards[shuffle[i]])
 	}
 	return allHands
 }

 // Returns an array of the current round's scores, and an array of the game winners
 // The winners array is empty if the game hasn't been won yet, contains all playerIndices of the winners if it has
 func (t *Table) EndRound() ([]int, []int) {
 	roundScores := t.ScoreRound()
 	t.UpdatePlayerScores(roundScores)
 	lowestScore := -1
 	winningPlayers := make([]int, 0)
 	winTriggered := false
 	t.dir = (t.dir + 1) % 4
 	for _, p := range t.players {
 		p.ResetTricks()
 		if p.GetScore() >= t.winCondition {
 			winTriggered = true
 		}
 		if p.GetScore() < lowestScore || lowestScore == -1 {
 			lowestScore = p.GetScore()
 		}
 	}
 	if winTriggered {
 		for _, p := range t.players {
 			if p.GetScore() == lowestScore {
 				winningPlayers = append(winningPlayers, p.GetPlayerIndex())
 			}
 		}
 	}
 	return roundScores, winningPlayers
 }

 // Resets stats for a new round of the game
 func (t *Table) NewRound() {
 	t.heartsBroken = false
 	t.firstTrick = true
 	players := t.GetPlayers()
 	for _, p := range players {
 		if t.dir != direction.None {
 			p.SetDonePassing(false)
 			p.SetDoneTaking(false)
 			t.SetFirstPlayer(-1)
 		} else {
 			p.SetDonePassing(true)
 			p.SetDoneTaking(true)
 			if p.HasTwoOfClubs() {
 				t.SetFirstPlayer(p.GetPlayerIndex())
 			}
 		}
 		p.SetDoneScoring(false)
 	}
 }

 // Resets table for start of new game
 func (t *Table) NewGame() {
 	for _, p := range t.players {
 		p.ResetPassedTo()
 		p.ResetPassedFrom()
 		p.ResetTricks()
 		p.ResetScore()
 	}
 	t.NewRound()
 	t.dir = direction.Right
 }
	// Copyright 2015 The Vanadium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style
	// license that can be found in the LICENSE file.

	// table contains and manages the logic half of the game state

	package table

	import (
	"golang.org/x/mobile/exp/sprite"
	"hearts/img/direction"
	"hearts/logic/card"
	"hearts/logic/player"
	"math/rand"
	"sort"
	)

	// Returns a table instance with player set length numPlayers
	func InitializeGame(numPlayers int, texs map[string]sprite.SubTex) *Table {
	players := make([]*player.Player, 0)
	for i := 0; i < numPlayers; i++ {
	players = append(players, player.NewPlayer(i))
	}
	t := makeTable(players)
	t.GenerateClassicCards()
	t.NewRound()
	return t
	}

	// Given a group of players, returns a table instance with that group as its player set
	func makeTable(p []player.Player) Table {
	return &Table{
	players: p,
	trick: make([]*card.Card, len(p)),
	firstPlayer: -1,
	allCards: nil,
	heartsBroken: false,
	firstTrick: true,
	winCondition: 100,
	dir: direction.None,
	}
	}

	type Table struct {
	// players contains all players in the game, indexed by playerIndex
	players []*player.Player
	// trick contains all cards in the current trick, indexed by the playerIndex of the player who played them
	trick []*card.Card
	// firstPlayer is the index in trick of the card played first
	firstPlayer int
	// allCards contains all 52 cards in the deck. GenerateCards() populates this
	allCards []*card.Card
	// heartsBroken returns true if a heart has been played yet in the round, otherwise false
	heartsBroken bool
	// firstTrick returns true if the current trick is the first in the round, otherwise false
	firstTrick bool
	// winCondition is the number of points needed to win the game
	// traditionally 100, could set higher or lower for longer or shorter game
	winCondition int
	// dir is the current round's passing direction
	dir direction.Direction
	}

	// Returns the player set of t
	func (t Table) GetPlayers() []player.Player {
	return t.players
	}

	// Returns the current trick of t
	func (t Table) GetTrick() []card.Card {
	return t.trick
	}

	// Returns the index in t.players and t.trick of the designated first player in the current round
	func (t *Table) GetFirstPlayer() int {
	return t.firstPlayer
	}

	// Returns the deck of all cards stored in t
	func (t Table) GetAllCards() []card.Card {
	return t.allCards
	}

	func (t *Table) GetDir() direction.Direction {
	return t.dir
	}

	// Sets the firstplayer variable of t to index
	func (t *Table) SetFirstPlayer(index int) {
	t.firstPlayer = index
	}

	// Returns the index of the player whose turn it is, -1 if this cannot be determined at this time
	func (t *Table) WhoseTurn() int {
	allNil := true
	for i, c := range t.trick {
	nextPlayerIndex := (i + 1) % len(t.players)
	if c != nil {
	allNil = false
	if t.trick[nextPlayerIndex] == nil {
	return nextPlayerIndex
	}
	}
	}
	if allNil {
	return t.firstPlayer
	}
	return -1
	}

	// This function generates a traditional deck of 52 cards, with 13 in each of the four suits
	// Each card has a suit (Club, Diamond, Spade, or Heart)
	// Each card also has a face from Two to Ace (Aces are high in Hearts)
	func (t *Table) GenerateClassicCards() {
	cardsPerSuit := 13
	t.allCards = make([]*card.Card, 0)
	cardFaces := []card.Face{card.Two, card.Three, card.Four, card.Five, card.Six, card.Seven, card.Eight, card.Nine,
	card.Ten, card.Jack, card.Queen, card.King, card.Ace}
	for i := 0; i < cardsPerSuit; i++ {
	t.allCards = append(t.allCards, card.NewCard(cardFaces[i], card.Club))
	t.allCards = append(t.allCards, card.NewCard(cardFaces[i], card.Diamond))
	t.allCards = append(t.allCards, card.NewCard(cardFaces[i], card.Spade))
	t.allCards = append(t.allCards, card.NewCard(cardFaces[i], card.Heart))
	}
	sort.Sort(card.CardSorter(t.allCards))
	}

	// Given a card and the index of its player, adds that card to the appropriate spot in the current trick
	func (t Table) SetPlayedCard(c card.Card, playerIndex int) {
	t.trick[playerIndex] = c
	if c.GetSuit() == card.Heart && !t.heartsBroken {
	t.heartsBroken = true
	}
	}

	// Returns true if there are exactly three cards being passed (specified by Hearts logic)
	func (t Table) ValidPass(cardsPassed []card.Card) bool {
	return len(cardsPassed) == 3
	}

	// Returns whether it is valid for the player at playerIndex to play a card
	func (t *Table) ValidPlayOrder(playerIndex int) bool {
	return t.WhoseTurn() == playerIndex
	}

	// Given a card and the index of its player, returns "" if this move was valid based on game logic
	// Otherwise returns a string explaining the error
	func (t Table) ValidPlayLogic(c card.Card, playerIndex int) string {
	validPlay := ""
	player := t.players[playerIndex]
	if t.firstPlayer == playerIndex {
	if !t.firstTrick {
	if c.GetSuit() != card.Heart \|\| t.heartsBroken {
	return validPlay
	} else {
	if player.HasOnlyHearts() {
	return validPlay
	} else {
	return "Hearts have not been broken"
	}
	}
	} else if c.GetSuit() == card.Club && c.GetFace() == card.Two {
	return validPlay
	} else {
	return "Must open with the Two of Clubs"
	}
	} else {
	firstPlayedSuit := t.trick[t.firstPlayer].GetSuit()
	if c.GetSuit() == firstPlayedSuit \|\| !player.HasSuit(firstPlayedSuit) {
	if !t.firstTrick {
	return validPlay
	} else if !c.WorthPoints() {
	return validPlay
	} else if player.HasAllPoints() {
	return validPlay
	} else {
	return "Point cards not allowed in the first round"
	}
	} else {
	return "Must follow suit"
	}
	}
	return "Invalid play"
	}

	// Returns true if all players have their initial dealt hands
	func (t *Table) AllDoneDealing() bool {
	for _, p := range t.players {
	if len(p.GetHand()) == 0 {
	return false
	}
	}
	return true
	}

	// Returns true if all players have taken the cards passed to them
	func (t *Table) AllDonePassing() bool {
	for _, p := range t.players {
	if !p.GetDonePassing() {
	return false
	}
	}
	return true
	}

	// Returns true if all players have finished looking at their scores
	func (t *Table) AllReadyForNewRound() bool {
	for _, p := range t.players {
	if !p.GetDoneScoring() {
	return false
	}
	}
	return true
	}

	// Returns true if all players are out of cards, indicating the end of a round
	func (t *Table) RoundOver() bool {
	for _, p := range t.players {
	if len(p.GetHand()) > 0 {
	return false
	}
	}
	return true
	}

	// Calculates who should take the cards in the current trick and sends them. Sets next first player accordingly. Returns true if the round is over
	func (t *Table) SendTrick() (bool, int) {
	trickSuit := t.trick[t.firstPlayer].GetSuit()
	highestCardFace := card.Two
	highestIndex := -1
	for i := 0; i < len(t.trick); i++ {
	curCard := t.trick[i]
	if curCard.GetSuit() == trickSuit && curCard.GetFace() >= highestCardFace {
	highestCardFace = curCard.GetFace()
	highestIndex = i
	}
	}
	// resets all players' donePlaying bools
	for _, p := range t.players {
	p.SetDonePlaying(false)
	}
	// clear trick
	t.players[highestIndex].TakeTrick(t.trick)
	t.trick = make([]*card.Card, len(t.players))
	if t.firstTrick {
	t.firstTrick = false
	}
	if t.RoundOver() {
	return true, highestIndex
	}
	// set first player for next trick to whoever received the current trick
	t.SetFirstPlayer(highestIndex)
	return false, highestIndex
	}

	// Returns the score of the current round
	// Accounts for a player possibly shooting the moon
	func (t *Table) ScoreRound() []int {
	allPoints := 26
	roundScores := make([]int, len(t.players))
	shotMoon := false
	shooter := -1
	for i := 0; i < len(t.players); i++ {
	roundScores[i] = t.players[i].CalculateScore()
	if roundScores[i] == allPoints {
	shotMoon = true
	shooter = i
	}
	}
	if shotMoon {
	for i := 0; i < len(t.players); i++ {
	if i == shooter {
	roundScores[i] = 0
	} else {
	roundScores[i] = allPoints
	}
	}
	}
	return roundScores
	}

	// Adds the scores of the current round to the players total scores
	func (t *Table) UpdatePlayerScores(roundScores []int) {
	for i := 0; i < len(t.players); i++ {
	t.players[i].UpdateScore(roundScores[i])
	}
	}

	// Returns set of hands with random, even card distribution
	func (t Table) Deal() [][]card.Card {
	numPlayers := len(t.players)
	allHands := make([][]*card.Card, numPlayers)
	shuffle := rand.Perm(len(t.allCards))
	for i := 0; i < len(t.allCards); i++ {
	allHands[i%numPlayers] = append(allHands[i%numPlayers], t.allCards[shuffle[i]])
	}
	return allHands
	}

	// Returns an array of the current round's scores, and an array of the game winners
	// The winners array is empty if the game hasn't been won yet, contains all playerIndices of the winners if it has
	func (t *Table) EndRound() ([]int, []int) {
	roundScores := t.ScoreRound()
	t.UpdatePlayerScores(roundScores)
	lowestScore := -1
	winningPlayers := make([]int, 0)
	winTriggered := false
	t.dir = (t.dir + 1) % 4
	for _, p := range t.players {
	p.ResetTricks()
	if p.GetScore() >= t.winCondition {
	winTriggered = true
	}
	if p.GetScore() < lowestScore \|\| lowestScore == -1 {
	lowestScore = p.GetScore()
	}
	}
	if winTriggered {
	for _, p := range t.players {
	if p.GetScore() == lowestScore {
	winningPlayers = append(winningPlayers, p.GetPlayerIndex())
	}
	}
	}
	return roundScores, winningPlayers
	}

	// Resets stats for a new round of the game
	func (t *Table) NewRound() {
	t.heartsBroken = false
	t.firstTrick = true
	players := t.GetPlayers()
	for _, p := range players {
	if t.dir != direction.None {
	p.SetDonePassing(false)
	p.SetDoneTaking(false)
	t.SetFirstPlayer(-1)
	} else {
	p.SetDonePassing(true)
	p.SetDoneTaking(true)
	if p.HasTwoOfClubs() {
	t.SetFirstPlayer(p.GetPlayerIndex())
	}
	}
	p.SetDoneScoring(false)
	}
	}

	// Resets table for start of new game
	func (t *Table) NewGame() {
	for _, p := range t.players {
	p.ResetPassedTo()
	p.ResetPassedFrom()
	p.ResetTricks()
	p.ResetScore()
	}
	t.NewRound()
	t.dir = direction.Right
	}