DealerImpl


1   package poker.business;
2   
3   import java.util.Vector  ;
4   import poker.spec.*;
5   /**
6    * 
7    * EnhyDraw!, beta 4, 5/21/99
8    *
9    * Copyright 1999, Larry Wolcot & Daryl Tempesta
10   * ALL rights reserved. Not for commercial use
11   * without written permission from both authors.
12   *
13   * This class handles all of the cardGame rules,
14   * distribution of cards, hand evaluation, etc.
15   */
16  public class DealerImpl implements Dealer{
17  
18      int[] e = { 0, 0, 0, 0, 0}; 
19      public Vector   dealFiveCards(){
20      Vector   thisHand = new Vector  (5);
21      Vector   usedCards = new Vector  ();
22      for (int i = 0; i <5; i++){
23          thisHand.addElement(new Integer  (0));
24      }
25      for (int i = 0; i <5; i++){
26           thisHand = getUnusedCard(usedCards, thisHand, i);    
27      }
28      return thisHand;
29      }
30  
31     /**
32      * Insert an unused card at index, into theseCards
33      */
34      public Vector   getUnusedCard(Vector   usedCards, Vector   theseCards,int
35  index){
36      boolean shouldLoop = true;
37      boolean isUsed = false;
38      Integer   aRandomCard = null; Integer   thisCard = null;
39  
40      //Loop until we draw a uique, unused card
41      while (shouldLoop){
42        shouldLoop = false;
43        aRandomCard = new Integer  (((int)(Math.random()*52)+1));
44        if (usedCards.contains(aRandomCard)) { shouldLoop = true;
45        } else { shouldLoop = false; }
46      }
47      usedCards.addElement(aRandomCard);
48      theseCards.setElementAt(aRandomCard, index);
49  
50      return theseCards;  
51      }
52  
53      /**
54       * This method drops the selected cards and draws new ones
55       */    
56      public Vector   drawMoreCards(Vector   haveCards, Vector   dropCards){
57      Vector   allCards = new Vector  (0);
58  
59      //initialize a new Vector with the contents of another.
60      //Yeah, there are better ways to do it. Feeling liniar?
61      for (int i = 0; i < haveCards.size(); i++){
62          allCards.addElement(haveCards.elementAt(i));
63      }
64      String   flag;
65  
66      //draw a new card for every one select to drop
67      for (int i = 0; i < 5; i++){
68          flag = (String  )dropCards.elementAt(i);
69          if (flag.equals("DROP")){
70          haveCards = getUnusedCard(haveCards,haveCards, i);
71          }
72      }
73  
74      return haveCards;
75      }
76      
77      /**
78       * This is one scary method. It checks the hand!
79       * Not bad work for a mathaphobic  :)
80       */
81      public String   checkHand(Vector   cardsInHand){
82      // init all of my boolean flags
83      boolean flush = false;
84      boolean lowStraight = false;
85      boolean highStraight = false;
86      boolean straightFlush = false;
87      boolean two = false;
88      boolean three = false;
89      boolean twoPair = false;
90      boolean four = false;
91      boolean house = false;
92      Integer  [] card = new Integer  [5];
93      int[] c = { 0, 0, 0, 0, 0};
94          int[] d = { 0, 0, 0, 0, 0};
95  
96      // set up cards and strip suits
97      for (int i = 0; i < 5; i++){
98          card[i] = (Integer  )cardsInHand.elementAt(i);// root card
99          c[i] = card[i].intValue(); // get int value
100         d[i] = c[i];// copy to d[] array for scratch work
101         while (d[i] > 13) { d[i] -= 13; }//strip suits from d[]
102     }
103 
104     // Sort from high to low, put results into e[]
105     for (int i = 0; i < 5; i++){
106         if (d[i] >= e[0]) { 
107         shift(e, 0); e[0] = d[i];
108         }
109         if ((d[i] >= e[1]) & (d[i] < e[0])) { 
110         shift(e, 1); e[1] = d[i];
111         }
112             if ((d[i] >= e[2]) & (d[i] < e[1])) { 
113         shift(e, 2); e[2] = d[i];
114         }
115             if ((d[i] >= e[3]) & (d[i] < e[2])) { 
116         shift(e, 3); e[3] = d[i]; 
117         }
118             if ((d[i] >= e[4]) & (d[i] < e[3])) { 
119         shift(e, 4); e[4] = d[i]; 
120         }
121     }
122 
123     //Check for 2 and 3 of a kind
124     //This is one of the scariest sorts I've ever created!  ;)
125     int scratch1 = 0; int scratch2 = 0; int scratch3 = 0;
126     for (int i = 0; i <4; i++){
127         for (int x = i + 1; x < 5; x++){
128             if (e[x] == e[i]){
129             if ((two == true) & (e[x] != scratch1)){
130             if (e[x] != scratch3){
131                 twoPair = true;
132                 scratch2 = e[x];
133             }
134             } else {
135             if (e[x] != scratch3){  
136                     two = true;
137                     scratch1 = e[x];
138             }
139             }
140             if (x < 4){ 
141                 for (int y = x + 1; y < 5; y++){
142                     if(e[y] == e [x]){
143                         three = true;
144                 scratch3 = e[y];
145                 if (e[y] == scratch1){
146                         two = false; scratch1 = 0;
147                 } else { 
148                     if (e[y] == scratch2){
149                     twoPair = false; scratch2 = 0;
150                 }
151                 }  
152                     }
153                 }
154             }
155         }
156         }        
157     }
158 
159     //check for full house
160     if ((two) & (three)){
161         house = true; three = false; two = false;
162         scratch1 = 0; scratch2 = 0; scratch3 = 0;
163     }
164 
165     //check for lowStraight
166         if ((e[0] == e[1] + 1) & (e[1] == e[2] + 1) & 
167         (e[2] == e[3] + 1) & (e[3] == e[4] + 1)) {
168             lowStraight = true;
169         }
170         
171         //check for highStraight
172         if ((e[0] == 13) & (e[1] == 12) &
173             (e[2] == 11) & (e[3] ==  10) & (e[4] == 1)) {
174             highStraight = true;
175         }
176 
177     //check for 4 of a kind
178     if ( ((e[0] == e[1]) & (e[1] == e[2]) & (e[2] == e[3])) | 
179       ((e[4] == e[3]) & (e[3] == e[2]) & (e[2] == e[1])) ) {
180         four = true;
181         three = false; two = false;
182         scratch1 = 0; scratch2 = 0;
183     }
184 
185     //check for flush in the 4 suits
186     if ( ((c[0] < 14) & (c[0] > 0)) && ((c[1] < 14) & (c[1] > 0)) 
187         && ((c[2] < 14) & (c[2] > 0)) && ((c[3] < 14) & (c[3]>0)) 
188         && ((c[4] < 14) & (c[4] > 0)) ){
189     flush = true; }
190         if ( ((c[0] < 27) & (c[0] > 13)) && ((c[1] < 27) & (c[1] > 13))
191                 && ((c[2] < 27) & (c[2] > 13)) && ((c[3] <27) & (c[3]>13))
192                 && ((c[4] < 27) & (c[4] > 13)) ){
193         flush = true; }
194         if ( ((c[0] < 40) & (c[0] > 26)) && ((c[1] < 40) & (c[1] > 26))
195                 && ((c[2] < 40) & (c[2] >26)) && ((c[3] <40) & (c[3]>26))
196                 && ((c[4] < 40) & (c[4] > 26)) ){
197         flush = true; }
198         if ( ((c[0] < 53) & (c[0] > 39)) && ((c[1] < 53) & (c[1] > 39))
199                 && ((c[2] < 53) & (c[2] >39)) && ((c[3]< 53) & (c[3]>39))
200                 && ((c[4] < 53) & (c[4] > 39)) ){
201         flush = true; }
202 
203     String   results = "Nothing";
204 
205     //map boolean flags to english representation
206     if (flush) { results = "Flush"; }
207     if (three) { results = "Three of a kind"; }
208     if (twoPair) { results = "Two pair";
209     } else {
210             if (two) { 
211         if ((scratch1 == 1) | (scratch1 > 10)){
212              results = "Pair of Jacks or better";
213             } else {
214              results = "A low pair";
215         } 
216         }
217     }
218     if (house){ results = "Full house";}
219     if ((lowStraight) | (highStraight)){ results = "Straight";}
220     if (four){ results = "Four of a kind"; }
221     if ((lowStraight) & (flush)) { results = "Straight flush";}
222     if ((highStraight) & (flush)) { results = "Royal flush";}
223 
224     return results;
225     }
226 
227    /**
228     * Return payout ration compared to 1 from english representation
229     */
230     public int getPayout(String   hand){
231     if (hand.equals("A low pair")) { return 0;}
232         if (hand.equals("Pair of Jacks or better")) { return 1;}
233         if (hand.equals("Two pair")) { return 2;}
234         if (hand.equals("Three of a kind")) { return 4;}
235         if (hand.equals("Straight")) { return 5;}
236         if (hand.equals("Flush")) { return 9;}
237         if (hand.equals("Full house")) { return 15;}
238         if (hand.equals("Four of a kind")) { return 40;}
239         if (hand.equals("Straight flush")) { return 150;}
240         if (hand.equals("Royal Flush")) { return 400;}
241 
242     return 0;
243     }
244 
245    /*
246     * Method used by one of the sorts to shift cards from right to left
247     */
248     private void shift(int[] f, int x){
249         for (int i = 4; i > x; i--){
250             f[i] = f[i - 1];
251     }   
252     this.e = f;
253     }
254 
255 }
256
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