package.json

@@ -13,7 +13,6 @@
   "author": "Flummi",
   "license": "ISC",
   "dependencies": {
-    "@xpressit/winning-poker-hand-rank": "^0.1.6",
     "cuffeo": "^1.2.2"
   }
 }

src/inc/helper.mjs

@@ -9,7 +9,7 @@ try {
 }
 
 export default new class {
-  suits = { "♠": "S", "♣": "C", "♦": "D", "♥": "H" };
+  suits = { "♠": "s", "♣": "c", "♦": "d", "♥": "h" };
   stripColors = msg => msg.replace(/\x03\d{0,2}(,\d{0,2}|\x02\x02)?/g, '');
   rand = (max = 1) => ~~(Math.random() * (max - 1) + 1);
 

src/inc/hr.mjs

@@ -0,0 +1,136 @@
+import constants from './constants.mjs';
+
+export default new class handranker {
+  rankHands(board, hand) {
+    const bestHand = this.calcBestHand(hand.map(c => this.toCard(c)), board.map(c => this.toCard(c)));
+
+    return {
+      rank: bestHand.rank,
+      percentage: (9999 - bestHand.rank) / 100,
+      combination: this.toCombination(bestHand.rank),
+      //madeHand: bestHand.madeHand.map((c) => this.toPlayingCard(c)),
+      //unused: bestHand.unused.map((c) => this.toPlayingCard(c)),
+    };
+  };
+
+  calcBestHand(pocketCards, communityCards) {
+    const cards = [...pocketCards, ...communityCards];
+    const { rank, madeHand } = this.rank567cardHand([...pocketCards, ...communityCards]);
+    return {
+      rank,
+      madeHand,
+      unused: cards.filter((c) => !madeHand.find((mc) => mc === c)),
+    };
+  };
+
+  toCombination(rank) {
+    const fixedRank = this.toFixedTexasRank(rank);
+    if(fixedRank === 10)   return 'StraightFlush';
+    if(fixedRank === 166)  return 'FourOfAKind';
+    if(fixedRank === 322)  return 'FullHouse';
+    if(fixedRank === 1599) return 'Flush';
+    if(fixedRank === 1609) return 'Straight';
+    if(fixedRank === 2467) return 'ThreeOfAKind';
+    if(fixedRank === 3325) return 'TwoPairs';
+    if(fixedRank === 6185) return 'Pair';
+    if(fixedRank === 7462) return 'HighCard';
+    return 'Invalid';
+  };
+
+  cactusFastRankHand(hand) {
+    const [c0, c1, c2, c3, c4] = hand;
+    if((c0 & c1 & c2 & c3 & c4 & 0xf000) !== 0)
+      return constants.fastFlushes[(c0 | c1 | c2 | c3 | c4) >>> 16];
+    const r = constants.fastUnique5[(c0 | c1 | c2 | c3 | c4) >>> 16];
+    if(r)
+      return r;
+    let u = 0xe91aaa35 + (((c0 & 0xff) * (c1 & 0xff) * (c2 & 0xff) * (c3 & 0xff) * (c4 & 0xff)) | 0);
+    u = u ^ (u >>> 16);
+    u += u << 8;
+    u ^= u >>> 4;
+    return constants.hash[((u + (u << 2)) >>> 19) ^ (constants.hashAdjust[(u >>> 8) & 0x1ff] | 0)];
+  };
+
+  rank567cardHand(hand) {
+    if(hand.length === 5) {
+      return {
+        rank: this.cactusFastRankHand([hand[0], hand[1], hand[2], hand[3], hand[4]]),
+        madeHand: [hand[0], hand[1], hand[2], hand[3], hand[4]],
+      };
+    }
+    if(hand.length === 6) {
+      const possibleHands = [
+        [hand[0], hand[1], hand[2], hand[3], hand[4]],
+        [hand[0], hand[1], hand[2], hand[3], hand[5]],
+        [hand[0], hand[1], hand[2], hand[4], hand[5]],
+        [hand[0], hand[1], hand[3], hand[4], hand[5]],
+        [hand[0], hand[2], hand[3], hand[4], hand[5]],
+        [hand[1], hand[2], hand[3], hand[4], hand[5]],
+      ];
+      const sortedHands = possibleHands.map(h => ({
+        rank: this.cactusFastRankHand(h),
+        madeHand: h,
+      })).sort((a, b) => a.rank - b.rank);
+      return sortedHands[0];
+    }
+    if (hand.length === 7) {
+      let r = 0;
+      let rank = 9999;
+      let bestHand = [hand[0], hand[1], hand[2], hand[3], hand[4]];
+      for (let i = 0; i < 21; i++) {
+        const inputHand = [
+          hand[constants.t7c5[i][0]],
+          hand[constants.t7c5[i][1]],
+          hand[constants.t7c5[i][2]],
+          hand[constants.t7c5[i][3]],
+          hand[constants.t7c5[i][4]],
+        ];
+        r = this.cactusFastRankHand(inputHand);
+        if (r < rank) {
+          rank = r;
+          bestHand = inputHand;
+        }
+      }
+      return {
+        rank,
+        madeHand: bestHand,
+      };
+    }
+    throw new Error(`Hand ranker doesn't support ${hand.length} cards`);
+  };
+
+  toFixedTexasRank(r) {
+    if(r <= 10)    return 10; // StraightFlush
+    if(r <= 166)   return 166; // FourOfAKind
+    if(r <= 322)   return 322; // FullHouse
+    if(r <= 1599)  return 1599; // Flush
+    if(r <= 1609)  return 1609; // Straight
+    if(r <= 2467)  return 2467; // ThreeOfAKind
+    if(r <= 3325)  return 3325; // TwoPairs
+    if(r <= 6185)  return 6185; // Pair
+    if(r != 65535) return 7462; // HighCard
+    return 65535; // Invalid
+  };
+
+  toPlayingCard(card) {
+    const rankRune = constants.rankToRune[(card >> 8) & 0xf];
+    const suitRune = constants.suitToRune[(card >> 12) & 0xf];
+    if (!rankRune || !suitRune) {
+      throw new Error(`Cannot convert Card ${card} to PlayingCard`);
+    }
+    return (rankRune + suitRune);
+  };
+
+  toCard(playingCard) {
+    const [rank, suit] = this.toRankAndSuit(playingCard);
+    return ((1 << rank) << 16) | (suit << 12) | (rank << 8) | constants.PRIMES[rank];
+  };
+
+  toRankAndSuit(playingCard) {
+    const rank = constants.runeToRank[playingCard[0]];
+    const suit = constants.runeToSuit[playingCard[1]];
+    if (!suit || rank === undefined)
+      throw new Error(`Invalid playing card: ${playingCard}`);
+    return [rank, suit];
+  };
+};

src/index.mjs

@@ -1,7 +1,7 @@
 import cuffeo from 'cuffeo';
 import handranker from './inc/handranker.mjs';
-import { rankHands } from '@xpressit/winning-poker-hand-rank'; 
 import helper from './inc/helper.mjs';
+import hr from './inc/hr.mjs';
 
 const cfg = helper.config;
 export const bot = await new cuffeo(cfg.getFull().clients);
@@ -29,6 +29,30 @@ bot.on("notice", msg => {
 bot.on("message", async e => {
   if(e.channel !== cfg.get('channel'))
     return;
+  if(e.message.startsWith(".cards ")) {
+    let cards = [];
+    try {
+      cards = JSON.parse(e.message.slice(7));
+    } catch(err) {
+      return e.reply('das ist kein Array du Pflaumennase');
+    }
+
+    const hand = cards.slice(0, 2);
+    const board = cards.slice(2);
+
+    let rank;
+
+    try {
+      rank = hr.rankHands(board, hand);
+    } catch(err) {
+      console.log(err);
+      return e.reply(JSON.stringify(err));
+    }
+
+    e.reply(JSON.stringify(rank));
+    
+    return;
+  }
   if(e.message === `.${e.self.me.nickname} help`) {
     await e.write(`PRIVMSG ${e.user.nick} I always say hirc schmirc, available commands are:`);
     const commands = [
@@ -48,32 +72,6 @@ bot.on("message", async e => {
       await e.write(`PRIVMSG ${e.user.nick} ${command}`);
     }
   }
-  if(e.message.startsWith(".cards ")) {
-    let cards = [];
-    try {
-      cards = JSON.parse(e.message.slice(7));
-    } catch(err) {
-      return e.reply('das ist kein Array du Pflaumennase');
-    }
-
-    const all = cards;
-    const hand = cards.slice(0, 2);
-    const board = cards.slice(2);
-
-    let oldrank;
-    let newrank;
-
-    try {
-      oldrank = rankHands('texas', board, [hand])[0];
-      newrank = handranker.evalHand(all);
-    } catch(err) {
-      return e.reply(JSON.stringify(err));
-    }
-
-    e.reply('old: ' + JSON.stringify(oldrank));
-    e.reply('new: ' + JSON.stringify(newrank));
-    return;
-  }
   if(e.message.match(new RegExp(`^${e.self.me.nickname}: Your bank account`))) {
     env.bank = +e.message.match(/is: (\d+) \(/)[1];
   }