src/main/java/com/codingame/game/Model.java

   1 package com.codingame.game;
   2
   3 import java.util.Random;
   4 import java.util.Properties;
   5
   6 import com.codingame.gameengine.core.GameManager;
   7 import com.codingame.gameengine.core.MultiplayerGameManager;
   8 import com.google.inject.Inject;
   9
  10 class Model {
  11     @Inject private MultiplayerGameManager<com.codingame.game.Player> gameManager;
  12     Random random;
  13     int roadLength;
  14     int initialStones;
  15     int trollPosition;
  16     Player p0, p1;
  17
  18     class Player {
  19         com.codingame.game.Player gp;
  20         int index;
  21
  22         Player(int i) { index = i; }
  23
  24         private int castlePosition;
  25         public int getCastlePosition() { return castlePosition; }
  26         public void setCastlePosition(int pos) { castlePosition = pos; }
  27
  28         private int multiplier;
  29         public int getMultiplier() { return multiplier; }
  30         public void setMultiplier(int m) { multiplier = m; }
  31
  32         class FailedToThrowStonesAndShouldHave extends Exception {}
  33         class ThrewMoreStonesThanHad extends Exception {}
  34
  35         private int stones;
  36         public int getStones() { return stones; }
  37         public void consumeStones(int n)
  38             throws ThrewMoreStonesThanHad,
  39                    FailedToThrowStonesAndShouldHave
  40         {
  41             if (n > stones) {
  42                 throw new ThrewMoreStonesThanHad();
  43             }
  44             if (n == 0 && stones > 0) {
  45                 throw new FailedToThrowStonesAndShouldHave();
  46             }
  47             setStones(stones - n);
  48         }
  49         public int consumeMaxStones() {
  50             int r = stones;
  51             stones = 0;
  52             return r;
  53         }
  54         public int consumeMinStones() {
  55             if (stones < 1) {
  56                 throw new Error("Internal error: tried to consume min stones on an empty heap.");
  57             }
  58             stones--;
  59             return 1;
  60         }
  61         public void setStones(int n) {
  62             stones = n;
  63         }
  64         public int getOppStones() {
  65             return p0.stones + p1.stones - stones;
  66         }
  67
  68         public void adjustScore(int trollPosition) {
  69             gp.setScore(Math.abs(castlePosition - trollPosition));
  70         }
  71
  72         public int getTrollDistance() {
  73             return Math.abs(castlePosition - trollPosition);
  74         }
  75     }
  76
  77     void init(long seed) {
  78         random = new Random(seed);
  79         switch (random.nextInt(4)) {
  80         case 0:
  81             roadLength = 6;
  82             initialStones = 15;
  83             break;
  84         case 1:
  85             roadLength = 6;
  86             initialStones = 30;
  87             break;
  88         case 2:
  89             roadLength = 14;
  90             initialStones = 30;
  91             break;
  92         case 3:
  93             roadLength = 14;
  94             initialStones = 50;
  95             break;
  96         }
  97
  98         Properties ps = gameManager.getGameParameters();
  99         String buf = ps.getProperty("roadLength");
 100         if (buf != null) {
 101             try {
 102                 int i = Integer.parseInt(buf);
 103                 if (i < 0 || i > 20 || (i & 1) != 0) {
 104                     gameManager.addToGameSummary(GameManager.formatErrorMessage("Ignoring invalid road length: " + buf));
 105                 }
 106                 else {
 107                     roadLength = i;
 108                     gameManager.addToGameSummary("Road length overridden to " + i);
 109                 }
 110             }
 111             catch(NumberFormatException e) {
 112                 gameManager.addToGameSummary(GameManager.formatErrorMessage("Ill-formed road length: " + buf));
 113             }
 114         }
 115         ps.setProperty("roadLength", new Integer(roadLength).toString());
 116
 117         buf = ps.getProperty("initialStones");
 118         if (buf != null) {
 119             try {
 120                 int i = Integer.parseInt(buf);
 121                 if (i > 50) {
 122                     gameManager.addToGameSummary(GameManager.formatErrorMessage("Ignoring invalid initial stone count: " + buf));
 123                 }
 124                 else {
 125                     initialStones = i;
 126                     gameManager.addToGameSummary("Initial stone count overridden to " + buf);
 127                 }
 128             }
 129             catch (NumberFormatException e) {
 130                 gameManager.addToGameSummary(GameManager.formatErrorMessage("Ill-formed initial stone count: " + buf));
 131             }
 132         }
 133         ps.setProperty("initialStones", new Integer(initialStones).toString());
 134
 135         trollPosition = roadLength / 2;
 136
 137         p0 = new Player(0);
 138         p0.gp = gameManager.getPlayer(0);
 139         p0.setCastlePosition(0);
 140         p0.setMultiplier(1);
 141         p0.adjustScore(trollPosition);
 142         p0.setStones(initialStones);
 143
 144         p1 = new Player(1);
 145         p1.gp = gameManager.getPlayer(1);
 146         p1.setCastlePosition(roadLength);
 147         p1.setMultiplier(-1);
 148         p1.adjustScore(trollPosition);
 149         p1.setStones(initialStones);
 150     }
 151
 152     private int winner;
 153     boolean haveWinner() {
 154         if (trollPosition == 0) {
 155             winner = 1;
 156             return true;
 157         }
 158         else if (trollPosition == roadLength) {
 159             winner = 0;
 160             return true;
 161         }
 162         else {
 163             return false;
 164         }
 165     }
 166     int getWinner() { return winner; }
 167     int getLoser() { return 1 - winner; }
 168
 169     boolean exhausted() {
 170         return p0.getStones() <= 0 && p1.getStones() <= 0;
 171     }
 172 }