1 files changed, 77 insertions, 0 deletions
diff --git a/go/game/deck.go b/go/game/deck.go
new file mode 100644
index 00000000..569a952d
--- /dev/null
+++ b/go/game/deck.go
@@ -0,0 +1,77 @@
+package game
+
+import (
+	"log"
+	"math/rand"
+	"strconv"
+	"strings"
+)
+
+type Deck struct {
+	PileOfCardsBase
+}
+
+func NewDeck() *Deck {
+	d := Deck{PileOfCardsBase{[]*Card{}}}
+	return &d
+}
+
+func (d *Deck) Shuffle(r *rand.Rand) {
+	r.Shuffle(d.Size(), func(i, j int) {
+		d.cards[i], d.cards[j] = d.cards[j], d.cards[i]
+	})
+}
+
+func (d *Deck) Draw(amount int) []*Card {
+	if d.Size() < amount {
+		drawn := d.cards
+		d.cards = []*Card{}
+		return drawn
+	}
+
+	drawn := d.cards[0:amount]
+	d.cards = d.cards[amount:]
+	return drawn
+}
+
+func (d *Deck) DrawOne() *Card {
+	drawn := d.Draw(1)
+	if len(drawn) == 0 {
+		return nil
+	}
+	return drawn[0]
+}
+
+func NewDeckFrom(cards PileOfCards) *Deck {
+	d := NewDeck()
+	cards.MoveInto(d)
+	return d
+}
+
+func NewDeckFromCardPaths(cardPaths []string) *Deck {
+	d := NewDeck()
+	for _, cardPath := range cardPaths {
+		card := NewCard(cardPath)
+		d.AddCard(card)
+	}
+	return d
+}
+
+func NewDeckFromDeckList(deckList string) *Deck {
+	cardPaths := []string{}
+	lines := strings.Split(deckList, "\n")
+	for _, line := range lines {
+		tokens := strings.SplitN(line, " ", 2)
+		cardPath := tokens[1]
+		amount, err := strconv.Atoi(tokens[0])
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		for i := 0; i < amount; i++ {
+			cardPaths = append(cardPaths, cardPath)
+		}
+	}
+
+	return NewDeckFromCardPaths(cardPaths)
+}