src/hand.c


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#include "hand.h"
#include <stdlib.h>
#include <assert.h>
#include "card.h"

/**
 * Compares two hands; used for sorting them in hand_sort
 */
static int hand_comparator(const void *a, const void *b)
{
	card c1 = *(card *)a;
	card c2 = *(card *)b;
	
	return c1 - c2;
}

/**
 * Sord the cards in a hand
 * @param[in,out] h Pointer to hand that should be sorted
 */
void hand_sort(hand_t *h)
{
	assert(h != NULL);

	qsort(h->cards, MAX_HAND_CARDS, sizeof(card), hand_comparator);
}

/**
 * Removes a card from a hand by setting it to invalid value 0
 * @param[in,out] h Hand to remove card from
 * @param[in] card_index Index of card to remove
 */
void hand_remove_card(hand_t *h, const uint8_t card_index)
{
	assert(h != NULL);

	h->cards[card_index] = 0;
}

/**
 * Count number of valid cards in hand
 * @param[in] h Hand to count
 * @return Number of valid cards in hand
 */
const uint8_t hand_count_cards(const hand_t* h)
{
	uint8_t count = 0;
	for(int i=0; i<MAX_HAND_CARDS; i++)
		if(h->cards[i] != 0)
			count++;

	return count;
}