feat: added big 6 wheel to the casino

4 files changed, 83 insertions, 3 deletions

diff --git a/data/help/big6.yaml b/data/help/big6.yaml
new file mode 100644
index 0000000..718f3a8
--- /dev/null
+++ b/data/help/big6.yaml
@@ -0,0 +1,66 @@
+name: big6
+aliases: [big six, big 6, big-six, big_six]
+category: Interaction
+related: [casino, roulette]
+description: |
+  Big 6 — Sword and Shield
+
+  Find the wheel north of the double-zero roulette salon.
+
+  play big6          Sit at the wheel
+  bet 10 on 1        Bet on the $1 symbol (not a one-credit stake)
+  bet 5 on $20       Add a bet on $20
+  bet 2 on sword     Add a SWORD wager; SHIELD works the same way
+  bet / rebet        Add another copy of your most recent wager
+  spin               Start the wheel after placing your bets, when alone
+                     (any unambiguous prefix works, so 'sp' spins here).
+  unbet              Take back ALL bets before spinning
+  table              See the felt and profit odds
+  list               List the seven betting targets
+  rules              Read this page
+  stop               Leave, or queue departure until your bets settle
+  watch big6         Watch without taking a seat
+
+  Place any number of wagers on any combination of symbols. Repeated bets
+  on the same symbol are allowed; each bet must meet the table limits.
+  With one active player, betting has no deadline: type spin when ready.
+  With two or more active players, betting opens for 25 ticks. The wheel
+  spins automatically when that window ends, even if nobody bet. Spin
+  cannot shorten a shared window. No new bets during a spin or respin.
+
+  Symbol     Spaces    Profit odds
+  $1            24        1:1
+  $2            12        3:1
+  $5             6        7:1
+  $10            4       11:1
+  $20            2       23:1
+  SWORD          1       47:1
+  SHIELD         1       47:1
+  DOUBLE         1       automatic double and respin (not a betting target)
+
+  Every one of the 51 spaces is equally likely on each spin. On DOUBLE,
+  every live bet doubles and stays on its original symbol, then the wheel
+  spins again automatically. This can repeat indefinitely: x2, x4, x8,
+  x16, and beyond. No extra money is debited, and nothing is cashed out
+  between spins. A different symbol finally settles all bets: matching
+  bets return the enlarged stake plus its profit; other bets lose.
+
+  Example: 10 on $1, then DOUBLE twice, then $1 returns 80 credits
+  (40 enlarged stake + 40 profit). Your original cost was only 10.
+  Receipts report the original cost and final net, not a new debit for
+  each DOUBLE. Chips are spent first; payouts return as credits.
+
+  Inspired by the Draft Kings dollar wheel, with adjusted counts and odds.
+  Every target has exactly 48/49 = 97.95918367% theoretical RTP, including
+  all DOUBLE respins. If E is expected return per original credit:
+  E = 48/51 + (2/51) E. House edge is 1/49 = 2.04081633%.
+  These integer payouts need no credit rounding, even for one-credit bets.
+
+  The scrolling wheel slows with variable steps and pauses. The final
+  display shows the winning space and four actual neighbors on each side.
+  Animation does not change the odds or allow bets after a spin starts.
+  Disconnecting during a spin forfeits committed wagers; before a spin,
+  outstanding stakes are refunded. Shutdown recovery refunds original
+  pending stakes, not unbanked DOUBLE increases. The DOUBLE chain itself
+  has no cap; payouts beyond the economy's integer balance capacity are
+  reported as pending recovery, never truncated or paid as a wrapped value.
diff --git a/data/help/casino.yaml b/data/help/casino.yaml
index 36058d3..4634579 100644
--- a/data/help/casino.yaml
+++ b/data/help/casino.yaml
@@ -1,13 +1,13 @@
 name: casino
 aliases: [play, bet, rebet, table, watch, rules]
 category: Interaction
-related: [roulette, racetrack, blackjack, baccarat, craps, slots, video poker, pai gow poker]
+related: [big6, roulette, racetrack, blackjack, baccarat, craps, slots, video poker, pai gow poker]
 description: |
   Casino quick guide
 
   play <game>        Join a table; use play to list nearby games.
   bet N       Wager chips first, then credits.
-  bet N on BET Choose a roulette, baccarat or craps bet.
+  bet N on BET Choose a roulette, Big 6, baccarat or craps bet.
   bet / rebet        Repeat your last table wager.
   table              Show the table felt; roulette also shows the racetrack,
                      history and payout tables.
@@ -36,6 +36,7 @@ description: |
   their banked winnings are paid. Failed payments are reported separately;
   a receipt never claims that an uncredited payout has been paid.
 
+  help big6          Dollar wheel, SWORD/SHIELD and unlimited DOUBLE respins.
   help roulette      Number, color and combination bets.
   help racetrack     Voisins, Tiers, Orphelins, Zero and Neighbors.
   help blackjack     Beat the dealer without going over 21.
diff --git a/data/rooms/casino/6183.yaml b/data/rooms/casino/6183.yaml
index 476c8b8..474cfb1 100644
--- a/data/rooms/casino/6183.yaml
+++ b/data/rooms/casino/6183.yaml
@@ -1,6 +1,8 @@
 name: Double Zero Roulette Salon
-description: An American roulette wheel gleams under brass lamps; its green zero and double-zero pockets face a neatly marked betting layout.
+description: An American roulette wheel gleams under brass lamps; its green zero and double-zero pockets face a neatly marked betting layout. The Sword and Shield Big 6 wheel salon lies north.
 exits:
+  north:
+    room: 6199
   south:
     room: 6182
 casino_tables:
diff --git a/data/rooms/casino/6199.yaml b/data/rooms/casino/6199.yaml
new file mode 100644
index 0000000..e491ad2
--- /dev/null
+++ b/data/rooms/casino/6199.yaml
@@ -0,0 +1,11 @@
+name: Sword and Shield Wheel Salon
+description: A towering Big 6 wheel gleams with brass spokes and painted banknotes. A sword and a shield mark its rarest prizes; a golden DOUBLE flashes between them. Broad green felt offers room for a handful of wagers. The double-zero roulette salon lies south.
+exits:
+  south:
+    room: 6183
+casino_tables:
+  - id: big6
+    game: big6
+    betting_ticks: 25
+    min_bet: 1
+    max_bet: 10000