fix: casino stake preservation, world state reconciliation, casino game registration

1 files changed, 59 insertions, 0 deletions

diff --git a/internal/casino/registry.go b/internal/casino/registry.go
new file mode 100644
index 0000000..9a973d4
--- /dev/null
+++ b/internal/casino/registry.go
@@ -0,0 +1,59 @@
+package casino
+
+import "math/rand"
+
+// tableGameDef is the single registration point for a multiplayer table game.
+// A game's validation, rule defaults, and constructor live together here, so
+// adding a game is one entry instead of edits to three independent switches
+// (TableConfig.Validate, TableConfig.Normalize, and newTable) that could
+// silently drift apart. The rule structs stay on TableConfig; this does not
+// introduce a config union.
+type tableGameDef struct {
+	// validate checks a raw (pre-Normalize) table config.
+	validate func(TableConfig) error
+	// normalize applies this game's rule defaults to a table config.
+	normalize func(TableConfig) TableConfig
+	// new builds the game. It is called only after validate passes and the
+	// shared table config has been normalized.
+	new func(roomID int, cfg TableConfig, rng *rand.Rand) tableGame
+}
+
+// tableGames is populated in init, not in a var initializer: the constructors
+// transitively call TableConfig.Normalize, which consults tableGames, and Go
+// rejects that as an initialization cycle when the map is a literal.
+var tableGames map[GameName]tableGameDef
+
+func init() {
+	tableGames = map[GameName]tableGameDef{
+		GameBlackjack: {
+			validate:  validateBlackjackTable,
+			normalize: normalizeBlackjackTable,
+			new: func(roomID int, cfg TableConfig, rng *rand.Rand) tableGame {
+				return newBlackjackTable(roomID, cfg, rng)
+			},
+		},
+		GameBaccarat: {
+			validate:  validateBaccaratTable,
+			normalize: normalizeBaccaratTable,
+			new: func(roomID int, cfg TableConfig, rng *rand.Rand) tableGame {
+				return newBaccaratTable(roomID, cfg, rng)
+			},
+		},
+	}
+}
+
+// tableGameDefFor returns the registration for a game, or false when the game
+// has no multiplayer table implementation.
+func tableGameDefFor(game GameName) (tableGameDef, bool) {
+	def, ok := tableGames[game]
+	return def, ok
+}
+
+// slotVariants maps a machine variant name to the profile that variant plays.
+// This is the content seam for a new slot cabinet: a variant is a profile
+// lookup, not a new code path through Validate and the machine constructor.
+// The map is shared by MachineConfig.Validate and machineSlotProfile so the
+// accepted set and the played set cannot disagree.
+var slotVariants = map[string]func() SlotProfile{
+	"huff_and_even_more_puff": DefaultHuffAndPuffProfile,
+}