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/*
* Spider-Arachnid: A plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
* $Id: deck.c 22 2006-04-24 23:26:30Z tom $
*/
#include "deck.h"
#include <vdr/config.h>
#include <vdr/tools.h>
#include <stdlib.h>
/** Random number 0 .. max-1 */
unsigned int rand(unsigned int max)
{
static unsigned int seed = cTimeMs::Now();
return (unsigned int)((double)max * rand_r(&seed) / (RAND_MAX + 1.0));
}
/** --- class Deck --------------------------------------------------------- **/
/** Constructor */
Deck::Deck(int cards, int suits, int decks) :
allCards(cards * suits * decks)
{
cardsInSuit = cards;
suitCount = suits;
deckCount = decks;
shuffle();
}
/** Current count of cards */
int Deck::count() const
{
return allCards.size();
}
/** Card in deck */
const Card& Deck::card(int position) const
{
return allCards[position];
}
/** Shuffle the deck */
void Deck::shuffle()
{
for (unsigned int i = 0; i < allCards.size(); ++i)
{
int pos = -1;
while (pos < 0)
pos = rand(allCards.size());
while (allCards[pos].suit >= 0)
pos = (pos + 1) % allCards.size();
allCards[pos] = Card((i / cardsInSuit) % suitCount, i % cardsInSuit);
}
}
/** --- class Card --------------------------------------------------------- **/
/** Constructor */
Card::Card(int s, int r)
{
suit = s;
rank = r;
}
/** Matches this card to an other card? */
bool Card::matchesTo(const Card& other) const
{
return (suit == other.suit && rank + 1 == other.rank);
}
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