From 90ad8c0c33b519d5830c69d4128bdc984b5e9de8 Mon Sep 17 00:00:00 2001
From: historia <[not public]>
Date: Mon, 5 Oct 2026 14:22:14 -0400
Subject: feat: cryptocurrency exchange added to casino

---
 internal/game/render_crypto.go | 63 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 internal/game/render_crypto.go

(limited to 'internal/game/render_crypto.go')

diff --git a/internal/game/render_crypto.go b/internal/game/render_crypto.go
new file mode 100644
index 0000000..899f83b
--- /dev/null
+++ b/internal/game/render_crypto.go
@@ -0,0 +1,63 @@
+package game
+
+import (
+	"thehouseoficarus/internal/casino"
+	"thehouseoficarus/internal/net"
+)
+
+// Use the same contextual command columns and casino_hints policy as the
+// prediction counter and casino tables. Rules are opt-in, never an entry screen.
+func (g *Game) cryptoCommands(s *net.Session) []casino.MenuCommand {
+	if s.CryptoBusy {
+		return []casino.MenuCommand{{Command: "stop", Desc: "Leave and cancel the update"}}
+	}
+	commands := []casino.MenuCommand{}
+	if !s.CryptoUnavailable {
+		symbol := s.CryptoSelected
+		if symbol == "" {
+			symbol = "SYMBOL"
+		}
+		switch s.CryptoScreen {
+		case "view":
+			commands = append(commands,
+				casino.MenuCommand{Command: "buy " + symbol + " AMOUNT", Desc: "Buy coins"},
+				casino.MenuCommand{Command: "short " + symbol + " AMOUNT", Desc: "Back a falling price"},
+				casino.MenuCommand{Command: "contracts", Desc: "Trade calls and puts"},
+				casino.MenuCommand{Command: "back", Desc: "Return to the currencies"})
+		case "contracts":
+			commands = append(commands,
+				casino.MenuCommand{Command: "quote TYPE " + symbol + " AMOUNT PRICE DAYS", Desc: "Preview a call, put, write-call or write-put"},
+				casino.MenuCommand{Command: "option TYPE " + symbol + " AMOUNT PRICE DAYS", Desc: "Buy a call or put"},
+				casino.MenuCommand{Command: "write TYPE " + symbol + " AMOUNT PRICE DAYS", Desc: "Write a call or put; risk of debt"},
+				casino.MenuCommand{Command: "back", Desc: "Return to the currencies"})
+		case "active":
+			commands = append(commands, casino.MenuCommand{Command: "close ID", Desc: "Close a whole position"}, casino.MenuCommand{Command: "view SYMBOL", Desc: "View a currency's chart"})
+		default:
+			commands = append(commands, casino.MenuCommand{Command: "view SYMBOL", Desc: "Choose a currency"})
+		}
+		commands = append(commands, casino.MenuCommand{Command: "active", Desc: "Your open positions"}, casino.MenuCommand{Command: "closed", Desc: "Your completed trades"})
+	}
+	if s.Player.Crypto.Balance < 0 {
+		commands = append(commands, casino.MenuCommand{Command: "repay CREDITS", Desc: "Pay your exchange debt"})
+	} else {
+		commands = append(commands, casino.MenuCommand{Command: "fund CREDITS", Desc: "Add trading funds"}, casino.MenuCommand{Command: "withdraw CREDITS", Desc: "Take out available credits"})
+	}
+	return append(commands, casino.MenuCommand{Command: "rules", Desc: "How to trade"}, casino.MenuCommand{Command: "refresh", Desc: "Update this screen"}, casino.MenuCommand{Command: "stop", Desc: "Leave the counter"})
+}
+func (g *Game) cryptoHints(s *net.Session, force ...bool) {
+	forced := len(force) > 0 && force[0]
+	show := g.casinoHintsVisible(s, &casino.MenuView{ShowHints: s.CryptoShowHints})
+	s.CryptoShowHints = false
+	if !forced && !show {
+		return
+	}
+	s.WriteLine("")
+	s.WriteLine(g.renderCasinoCommands(s, "", "", g.cryptoCommands(s)))
+}
+func (g *Game) cryptoOptions(s *net.Session) {
+	s.CryptoScreen = "contracts"
+	g.predictionFrame(s, "OPTIONS", []string{
+		"Choose a call for a rising price, or a put for a falling price. Preview with quote before buying or writing.",
+		"AMOUNT is coins, PRICE is your target, and DAYS is 1, 7 or 30. Writing options can leave you owing credits.",
+	})
+}
-- 
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