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Add live multiplayer 500 over cg-net (cg-bid-net.el)

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Host-authoritative networked 500: host sits South, joiners take W/N/E,
open seats filled by AI. Per-seat rotated state hides other hands and the
kitty; clients reuse the single-player renderer/commands via :around advice,
so cg-bid.el/cg-bid-ui.el are untouched. Adds cg-bid-host/cg-bid-join, a
start-now lobby with auto-start at four players, and cg-bid-shuffle-partners.
cg-net.el gains cg-net-connect-functions. Verified: clean byte-compile,
checkdoc, 34/34 ERT (incl. 3 new net tests) and a two-process TCP game.
This commit is contained in:
Corwin Brust 2026-06-23 23:34:48 -05:00
parent 6593b49b74
commit 2345f7e1a6
5 changed files with 502 additions and 10 deletions
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66
test/card-games-tests.el
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@ -47,7 +47,6 @@
(ert-deftest cgt-net-loopback ()
"Host-authoritative move sync over a loopback TCP socket."
;; Skip gracefully where a TCP server cannot be opened.
(condition-case _
(delete-process
(make-network-process :name "cgt-probe" :server t :service 0
@ -268,3 +267,68 @@
(should-not (string-match-p "RET\\] play card" s)) ; key-help removed
(should (string-match-p "Help" s)) ; button row present
(should-not (string-match-p "New" s))))) ; no mid-hand new deal
;;;; Live 500 (networking)
(ert-deftest cgt-bid-net-filter ()
"Per-seat 500 state hides others' cards and rotates the viewer South."
(cl-flet ((ck (h) (sort (mapcar #'prin1-to-string h) #'string<)))
(let* ((cg-bid--human-seats '(0 1 2 3))
(g (cg-bid--deal (make-instance 'cg-bid-game) 3))
(st (cg-net-game-state g 1))) ; West's viewpoint
;; West sees its own ten cards rotated to index 0
(should (equal (ck (aref (plist-get st :hands) 0))
(ck (cg-bid--hand g 1))))
;; opponents are face-down counts only, not the real cards
(should (= 10 (length (aref (plist-get st :hands) 1))))
(should-not (equal (ck (aref (plist-get st :hands) 1))
(ck (cg-bid--hand g 2))))
;; the kitty stays hidden
(should-not (plist-get st :kitty))
;; South (abs 0) bids first; in West's frame that is seat 3
(should (= 3 (plist-get st :bidder)))
(should (= 1 (plist-get st :you)))))) ; :you is the absolute seat
(ert-deftest cgt-bid-net-apply ()
"The host applies only legal, in-turn moves."
(let* ((cg-bid--human-seats '(0 1 2 3))
(g (cg-bid--deal (make-instance 'cg-bid-game) 3)))
(should-not (cg-net-apply-move g 1 '(pass))) ; not West's turn yet
(should (cg-net-apply-move g 0 '(pass))) ; South may pass
(should (aref (cg-get g :passed) 0))
(should-not (cg-net-apply-move g 0 '(play (0 . 0)))) ; wrong phase
))
(ert-deftest cgt-bid-net-loopback ()
"A 500 move travels client -> host -> filtered broadcast over TCP."
(condition-case _
(delete-process
(make-network-process :name "cgt-probe2" :server t :service 0
:host "127.0.0.1" :family 'ipv4))
(error (ert-skip "TCP not available")))
(cl-flet ((pump () (dotimes (_ 16) (accept-process-output nil 0.05))))
(let* ((cg-bid--human-seats '(0 1))
(hgame (cg-bid--deal (make-instance 'cg-bid-game) 3))
(srv (cg-net-host-start hgame 0))
(port (process-contact srv :service))
(cgame (make-instance 'cg-bid-game)))
(setf (cg-net-host-next-seat cg-net--host) 1) ; reserve South for host
(unwind-protect
(progn
(cg-net-connect "127.0.0.1" port "P1" cgame)
(pump)
;; the client (seat 1) sees its own ten cards at index 0
(should (= 10 (length (aref (cg-get cgame :hands) 0))))
(should (equal
(sort (mapcar #'prin1-to-string (aref (cg-get cgame :hands) 0)) #'string<)
(sort (mapcar #'prin1-to-string (cg-bid--hand hgame 1)) #'string<)))
;; make it the client's turn, then let it pass
(cg-put hgame :bidder 1)
(cg-net-host-broadcast)
(pump)
(should (= 0 (cg-get cgame :bidder))) ; rotated: West sees itself bidding
(cg-net-send-move '(pass))
(pump)
(should (aref (cg-get hgame :passed) 1)))
(cg-net-disconnect)
(cg-net-host-stop)))))