feat: additional baca and bj rules variants

1 files changed, 56 insertions, 0 deletions

diff --git a/internal/casino/baccarat_rules.go b/internal/casino/baccarat_rules.go
new file mode 100644
index 0000000..82cc294
--- /dev/null
+++ b/internal/casino/baccarat_rules.go
@@ -0,0 +1,56 @@
+package casino
+
+import (
+	"fmt"
+	"strings"
+)
+
+// BaccaratRulesText travels with the configured table, never with scenery.
+func (c TableConfig) BaccaratRulesText() string {
+	c = c.Normalize()
+	b := c.Baccarat
+	variant := "Commission punto banco"
+	// Avoid floating-point display noise in the commission percentage.
+	banker := fmt.Sprintf("Banker wins pay %s (commission %s%% of winnings)", payoutRatio(b.BankerPayout), strings.TrimRight(strings.TrimRight(fmt.Sprintf("%.6f", (1-b.BankerPayout)*100), "0"), "."))
+	switch b.Variant {
+	case BaccaratSuper6:
+		variant = "Super 6 / no commission"
+		banker = "Banker wins pay 1:1, except a winning 6 pays 1:2 (two or three cards); no commission"
+	case BaccaratEZ:
+		variant = "EZ Baccarat / no commission"
+		banker = "Banker wins pay 1:1, except a winning three-card 7 pushes; no commission (Player bets still lose)"
+	}
+	optional := func(enabled bool, text string) string {
+		if enabled {
+			return "Enabled; " + text
+		}
+		return "Not offered"
+	}
+	return strings.Join([]string{
+		"Baccarat table " + c.ID + " — rules",
+		"Variant: " + variant,
+		fmt.Sprintf("Number of decks: %d", b.Decks),
+		"Player wins pay 1:1",
+		banker,
+		"Tie pays " + payoutRatio(b.TiePayout) + "; Player and Banker bets push on ties",
+		"Player pair (player_pair): " + optional(b.PairBets, "11:1; first two Player cards have identical rank"),
+		"Banker pair (banker_pair): " + optional(b.PairBets, "11:1; first two Banker cards have identical rank"),
+		"Dragon 7 (dragon_7): " + optional(b.Dragon7, "40:1; Banker wins with a three-card 7"),
+		"Panda 8 (panda_8): " + optional(b.Panda8, "25:1; Player wins with a three-card 8"),
+		"Super 6 bet (super_6): " + optional(b.Super6Bet, "12:1; Banker wins with 6 (two or three cards)"),
+		"Optional bets settle independently; pairs can win on ties; Dragon/Panda/Super 6 require an outright hand win",
+		"Scoring: Ace = 1; 2–9 face value; 10/J/Q/K = 0; highest last digit of the sum wins",
+		"Drawing: Automatic punto banco; no player hit/stand decisions",
+		"Naturals: An initial 8 or 9 on either hand stops all drawing",
+		"Player draws on 0–5, stands on 6–7 (unless a natural ends play)",
+		"Banker, if Player stands: Draw on 0–5, stand on 6–7",
+		"Banker, if Player draws: 0–2 draw; 3 draws except against 8; 4 against 2–7; 5 against 4–7; 6 against 6–7; 7 stands",
+		"Fractional credits: Rounded down; any commission rounds up and is collected on each win",
+		"Wagers: One per player per round, including optional bets; no simultaneous main/optional wagers",
+		"Available bets: " + b.betChoices(),
+		"Bet limits (all wagers): " + betRangeText(c.MinBet, c.MaxBet) + " credits",
+		fmt.Sprintf("Seats: %d; betting window: %d ticks", c.MaxPlayers, c.BettingTicks),
+		fmt.Sprintf("Shuffle threshold: %g%% of shoe remaining; reshuffle before a round if fewer than six cards remain", b.ShuffleAt*100),
+		"Dealing style: Automatic; no player squeeze, shoe passing, or burn-card ceremony",
+	}, "\n")
+}