Initial pass at Golden Pack.

internal/ai/memory.go

@@ -94,9 +94,15 @@ func Observe(v *game.View, m *Memory) {
 		switch {
 		case e.Kind == game.LogBuy:
 			if c, ok := cardByID(m.PrevShopRow, e.Source); ok {
-				m.Opp.Known = append(m.Opp.Known, c)
-			} else if c, ok := templateByName(e.CardName); ok {
-				m.Opp.Known = append(m.Opp.Known, c)
+				// An Avocado buy is set aside, not kept in the deck (Golden
+				// pack): don't add it to the deck model.
+				if c.Food != game.FoodAvocado {
+					m.Opp.Known = append(m.Opp.Known, c)
+				}
+			} else if c, ok := templateByName(v.Pack, e.CardName); ok {
+				if c.Food != game.FoodAvocado {
+					m.Opp.Known = append(m.Opp.Known, c)
+				}
 			}
 		case e.Kind == game.LogSell:
 			m.removeOppCard(e.Source, e.CardName)
@@ -179,15 +185,15 @@ func cardByID(cards []game.Card, id string) (game.Card, bool) {
 	return game.Card{}, false
 }
 
-// templateByName mints a reference copy of a named card from the printed
-// tier contents. The suit is whatever the first printed copy has — callers
-// only rely on stats and effects.
-func templateByName(name string) (game.Card, bool) {
+// templateByName mints a reference copy of a named card from the pack's
+// printed tier contents. The suit is whatever the first printed copy has —
+// callers only rely on stats and effects.
+func templateByName(pack, name string) (game.Card, bool) {
 	if name == "" {
 		return game.Card{}, false
 	}
 	for tier := 1; tier <= game.MaxRounds; tier++ {
-		for _, c := range game.TierContents(tier) {
+		for _, c := range game.TierContentsForPack(pack, tier) {
 			if c.Name == name {
 				return c, true
 			}