From 0af318459029c4f80bcca32d427393d623b15492 Mon Sep 17 00:00:00 2001
From: Jarvis <jarvis@johnmaguire.me>
Date: Sat, 21 Feb 2026 09:46:29 +0000
Subject: [PATCH] Add random trading (~10% chance per turn, 50/50
 accept/reject)

---
 monop_players.py | 105 +++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 96 insertions(+), 9 deletions(-)

diff --git a/monop_players.py b/monop_players.py
index c767340..8feaaec 100644
--- a/monop_players.py
+++ b/monop_players.py
@@ -65,6 +65,10 @@ class PlayerBot:
         self._prompt_answered = False
         # Seen "goes first" yet
         self._first_player_announced = False
+        # Trading state
+        self.in_trade = False
+        self.trade_props_offered = 0
+        self.turns_played = 0
 
     def log(self, msg):
         print(f"[{self.nick}] {msg}", flush=True)
@@ -219,8 +223,17 @@ class PlayerBot:
                 self.jail_turns = 0
 
             if self.is_my_turn():
-                self.say_delayed("roll")
-                self.rolled_this_turn = True
+                self.turns_played += 1
+                # ~10% chance to initiate a trade (after turn 5, not in debt)
+                if (self.turns_played > 5 and not self.in_debt
+                        and random.random() < 0.10):
+                    self.in_trade = True
+                    self.trade_props_offered = 0
+                    self.log("Initiating a trade!")
+                    self.say_delayed("trade")
+                else:
+                    self.say_delayed("roll")
+                    self.rolled_this_turn = True
             return
 
         # ============================================================
@@ -331,13 +344,7 @@ class PlayerBot:
                 self.say_delayed("yes")
             return
 
-        # Trade confirmation: "{name}, is the trade ok?"
-        m = re.match(r'^(.+?), is the trade ok\?$', msg)
-        if m:
-            name = m.group(1)
-            if name.lower() == self.nick.lower():
-                self.say_delayed("yes")
-            return
+        # (Trade confirmation handled in TRADING section below)
 
         # Resign confirmation
         if msg == "Do you really want to resign?":
@@ -428,6 +435,7 @@ class PlayerBot:
         # COMMAND PROMPT
         # ============================================================
         if msg == "-- Command:":
+            self.in_trade = False  # trade ended (accepted, rejected, or cancelled)
             if self.is_my_turn():
                 if self.in_debt:
                     self.say_delayed("mortgage")
@@ -495,6 +503,85 @@ class PlayerBot:
         if m:
             return
 
+        # ============================================================
+        # TRADING
+        # ============================================================
+
+        # "There ain't no-one around to trade WITH!!"
+        if msg.startswith("There ain't no-one"):
+            self.in_trade = False
+            if self.is_my_turn():
+                self.say_delayed("roll")
+                self.rolled_this_turn = True
+            return
+
+        # "player {name} ({N}):" — trade property listing phase
+        m = re.match(r'^player (.+?) \((\d+)\):$', msg)
+        if m and self.in_trade:
+            # This announces whose properties are being listed
+            self.trade_props_offered = 0
+            return
+
+        # "Which property do you wish to trade?" — pick a property or done
+        if msg == "Which property do you wish to trade?":
+            if self.in_trade:
+                if self.trade_props_offered == 0 and random.random() < 0.5:
+                    # Offer one property then done
+                    self.trade_props_offered = 1
+                    self.say_delayed("?")  # get the list
+                else:
+                    self.say_delayed("done")
+            return
+
+        # "You have $X.  How much are you trading?" — offer some cash
+        m = re.match(r'^You have \$(\d+)\.\s+How much are you trading\?', msg)
+        if m:
+            if self.in_trade:
+                cash = int(m.group(1))
+                # Offer 0-25% of cash randomly
+                offer = random.randint(0, max(1, cash // 4))
+                self.say_delayed(str(offer))
+            return
+
+        # "You have N get-out-of-jail-free cards. How many are you trading?"
+        m = re.match(r'^You have (\d+) get-out-of-jail-free card', msg)
+        if m:
+            if self.in_trade:
+                self.say_delayed("0")
+            return
+
+        # "You've already allocated that."
+        if msg == "You've already allocated that.":
+            if self.in_trade:
+                self.say_delayed("done")
+            return
+
+        # "{name}, is the trade ok?" — 50/50 accept or reject
+        m = re.match(r'^(.+?), is the trade ok\?$', msg)
+        if m:
+            name = m.group(1)
+            if name.lower() == self.nick.lower():
+                if random.random() < 0.5:
+                    self.log("Accepting trade!")
+                    self.say_delayed("yes")
+                else:
+                    self.log("Rejecting trade!")
+                    self.say_delayed("no")
+            return
+
+        # "Trade is done!" — trade completed
+        if msg == "Trade is done!":
+            self.in_trade = False
+            # Now we need to roll
+            if self.is_my_turn() and not self.rolled_this_turn:
+                self.say_delayed("roll")
+                self.rolled_this_turn = True
+            return
+
+        # Trade summary lines (just informational)
+        if msg.startswith("Player ") and msg.endswith("gives:"):
+            return
+
         # ============================================================
         # EVERYTHING ELSE — ignore silently
         # ============================================================