reactos/lib/3rdparty/cardlib/cardcount.cpp

   1 //
   2 //    CardCount is a helper library for CardStacks.
   3 //
   4 //    When you initialize a CardCount object with a
   5 //  cardstack, it keeps track of the number of cards
   6 //    the stack contains.
   7 //
   8 //    e.g. CardCount count(cardstack);
   9 //
  10 //    Then you can do:
  11 //
  12 //        int num_fives = count[5]
  13 //
  14 //        count.Add(cardstack2);        - combine with another stack
  15 //
  16 //        int num_aces = count[1]        - aces low
  17 //        int num_aces = count[14]    - aces high
  18 //
  19 //        count.Clear();
  20 //
  21
  22 #include "cardcount.h"
  23
  24 CardCount::CardCount()
  25 {
  26     Clear();
  27 }
  28
  29 CardCount::CardCount(const CardStack &cs)
  30 {
  31     Init(cs);
  32 }
  33
  34 void CardCount::Clear()
  35 {
  36     for(int i = 0; i < 13; i++)
  37         count[i] = 0;
  38 }
  39
  40 void CardCount::Add(const CardStack &cs)
  41 {
  42     for(int i = 0; i < cs.NumCards(); i++)
  43     {
  44         Card card = cs[i];
  45
  46         int val = card.LoVal();
  47         count[val - 1]++;
  48     }
  49 }
  50
  51 void CardCount::Sub(const CardStack &cs)
  52 {
  53     for(int i = 0; i < cs.NumCards(); i++)
  54     {
  55         Card card = cs[i];
  56         int val = card.LoVal();
  57
  58         if(count[val - 1] > 0)
  59             count[val - 1]--;
  60     }
  61 }
  62
  63 void CardCount::Init(const CardStack &cs)
  64 {
  65     Clear();
  66     Add(cs);
  67 }
  68
  69 int CardCount::operator [] (size_t index) const
  70 {
  71     if(index < 1) return 0;
  72     else if(index > 14)  return 0;    //if out of range
  73     else if(index == 14) index = 1;    //if a "ace-high"
  74
  75     return count[index - 1];
  76 }
  77
  78 //
  79 //    Decrement specified item by one
  80 //
  81 void CardCount::Dec(size_t index)
  82 {
  83     if(index < 1) return;
  84     else if(index > 14)  return;    //if out of range
  85     else if(index == 14) index = 1;    //if a "ace-high"
  86
  87     index -= 1;
  88
  89     if(count[index] > 0)
  90         count[index]--;
  91 }