sdk/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 "cardlib.h"
  23 #include "cardcount.h"
  24
  25 CardCount::CardCount()
  26 {
  27     Clear();
  28 }
  29
  30 CardCount::CardCount(const CardStack &cs)
  31 {
  32     Init(cs);
  33 }
  34
  35 void CardCount::Clear()
  36 {
  37     for(int i = 0; i < 13; i++)
  38         count[i] = 0;
  39 }
  40
  41 void CardCount::Add(const CardStack &cs)
  42 {
  43     for(int i = 0; i < cs.NumCards(); i++)
  44     {
  45         Card card = cs[i];
  46
  47         int val = card.LoVal();
  48         count[val - 1]++;
  49     }
  50 }
  51
  52 void CardCount::Sub(const CardStack &cs)
  53 {
  54     for(int i = 0; i < cs.NumCards(); i++)
  55     {
  56         Card card = cs[i];
  57         int val = card.LoVal();
  58
  59         if(count[val - 1] > 0)
  60             count[val - 1]--;
  61     }
  62 }
  63
  64 void CardCount::Init(const CardStack &cs)
  65 {
  66     Clear();
  67     Add(cs);
  68 }
  69
  70 int CardCount::operator [] (size_t index) const
  71 {
  72     if(index < 1) return 0;
  73     else if(index > 14)  return 0;    //if out of range
  74     else if(index == 14) index = 1;    //if a "ace-high"
  75
  76     return count[index - 1];
  77 }
  78
  79 //
  80 //    Decrement specified item by one
  81 //
  82 void CardCount::Dec(size_t index)
  83 {
  84     if(index < 1) return;
  85     else if(index > 14)  return;    //if out of range
  86     else if(index == 14) index = 1;    //if a "ace-high"
  87
  88     index -= 1;
  89
  90     if(count[index] > 0)
  91         count[index]--;
  92 }