add evBot

players/challengerBot.js

@@ -1,17 +1,89 @@
 module.exports = function () {
 
   var info = {
-    name: "Nameless Challenger",
-    email: "",
-    btcWallet: ""
+    name: "evBot",
+    email: "[email protected]",
+    btcWallet: "nil"
   };
-
+
+  // I hope these don't count as "external modules"?
+  // they seem to come with the game engine
+  var Hand = require('hoyle').Hand;
+  var deck = new (require('hoyle').Deck)().cards;
+
+  // increadably bad card dealer
+  function randCard(used) {
+    while(true) {
+      var card = deck[Math.floor(Math.random()*deck.length)].toString();
+      if(used.indexOf(card) == -1)
+      {
+        used.push(card);
+        return card;
+      }
+    }
+  }
+
+  // slowest game simulator on the planet
+  // needs serious optimizations
+  function simulate(hand, community, opponents, iterations) {
+    var wins = 0;
+    var games = 0;
+    var used = hand.concat(community);
+
+    for(games=0; games<iterations; games++) {
+      var _community = community.slice();
+      var _used = used.slice();
+
+      while(_community.length < 5) _community.push(randCard(_used));
+
+      var hero = Hand.make([].concat(hand).concat(_community));
+      var players = [hero];
+
+      for(var op=0; op<opponents; op++)
+        players.push(Hand.make([].concat(_community).concat([randCard(_used), randCard(_used)])));
+
+      var winners = Hand.pickWinners(players);
+      if(winners.length == 1 && winners[0] == hero)
+        wins++;
+    }
+
+    return wins / games;
+  }
+
   function update(game) {
     if (game.state !== "complete") {
-      return game.betting.call
+
+      // settings
+      // I can't believe it still works with these
+      // simulation results are just above random
+      var aggression = 1;
+      var opponent_cap = 1;
+      var sim_iterations = 20;
+
+      // if you have a proper simulator... these will do much better
+      //var aggression = 1.25;
+      //var opponent_cap = 2;
+      //var sim_iterations = 1000;
+
+      // calculate pot size
+      var pot = 0;
+      game.players.map(p => pot += parseFloat(p.wagered));
+
+      // compensate for horrible pre-flop and flop
+      // reducing opponent count increases simulation winning odds
+      var num_opponents = game.players.filter(p => p.state == 'active').length;
+      var sim_opponents = Math.min(num_opponents, opponent_cap);
+
+      // calculate winning odds
+      var odds = simulate(game.self.cards, game.community, sim_opponents, sim_iterations);
+
+      // set bet
+      // I have no idea if this is actually a good strategy or
+      // if it's just good against these basic bots
+      return pot * odds * aggression;
     }
   }
 
-  return { update: update, info: info }
-
-}
+  return { update: update, info: info };
+  
+};