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Add Contract Bridge: auction, dummy play, and rubber scoring

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New cg-bridge.el: a four-handed Bridge game (you are South, partnering
North against East and West) on the shared cg-game base.

* Auction: level/strain bids plus pass, double, and redouble, with the
  three-pass end rule, pass-outs, doubling state, and declarer
  determination (first of the side to name the strain).
* Play: follow-suit with the dummy exposed after the opening lead; the
  declarer plays both hands. Trick resolution honours trump and no-trump.
* Scoring: classic rubber -- trick points below the line toward game;
  overtricks, slam, insult, and undertrick penalties above; vulnerability
  and the rubber bonus. Verified against known results.
* A small natural bidding AI (openings, NT, raises with a fit, simple
  overcalls) that always terminates the auction, plus a greedy
  card-play AI.

Wire cg-bridge into the chooser, the Makefile, and the README, and add
two ERT tests (scoring math and a dozen full AI-driven deals). The suite
is now 109/109 and every file byte-compiles cleanly.
This commit is contained in:
Corwin Brust 2026-06-25 06:53:51 -05:00
parent 905d5989c2
commit 09adcaa3ea
5 changed files with 780 additions and 2 deletions
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Makefile
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@ -3,7 +3,7 @@ EMACS ?= emacs
PKG = card-games
VERSION = 1.0.60
# Source files in dependency order (cg-core first).
EL = cg-core.el cg-svg.el cg-render.el cg-net.el cg-bid.el cg-gaps.el cg-bid-ui.el cg-bid-net.el cg-solitaire.el cg-trick.el cg-eights.el cg-patience.el cg-president.el cg-rummy.el cg-rum500.el cg-handfoot.el cg-match.el cg-cribbage.el cg-scopa.el cg-trick-ext.el cg-spite.el card-games.el
EL = cg-core.el cg-svg.el cg-render.el cg-net.el cg-bid.el cg-gaps.el cg-bid-ui.el cg-bid-net.el cg-solitaire.el cg-trick.el cg-eights.el cg-patience.el cg-president.el cg-rummy.el cg-rum500.el cg-handfoot.el cg-match.el cg-cribbage.el cg-scopa.el cg-trick-ext.el cg-spite.el cg-bridge.el card-games.el
ELC = $(EL:.el=.elc)
PKGDESC = $(PKG)-pkg.el
TARDIR = $(PKG)-$(VERSION)