blob: 0482371d288d92f3c365f42727bfceb83dbdaa57 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
#include "main_stack.h"
#include <stdlib.h>
/**
* Initialize main stack: Assign valid cards and shuffle it
* @param[in,out] m Pointer to main stack
*/
void main_stack_init(main_stack_t *m)
{
assert(m != NULL);
// assign card values to main stack
for(int i = 0; i < MAX_MAIN_STACK_CARDS; i++)
m->cards[i] = i + 1;
// shuffle stack
for(int i = 0; i < 3 * MAX_MAIN_STACK_CARDS; i++)
{
uint32_t x = rand() % MAX_MAIN_STACK_CARDS;
uint32_t y = rand() % MAX_MAIN_STACK_CARDS;
card tmp = m->cards[x];
m->cards[x] = m->cards[y];
m->cards[y] = tmp;
}
}
/**
* Draw card on top of main stack and mark it as removed
* @param[in,out] m Pointer to main stack
* @return Card on top of stack
*/
card main_stack_remove_card(main_stack_t *m)
{
assert(m != NULL);
for(int i = 0; i < MAX_MAIN_STACK_CARDS; i++)
{
card c = m->cards[i];
if(c == 0)
continue;
m->cards[i] = 0;
return c;
}
return 0; // stack empty
}
/**
* Returns number of cards remaining in main stack
* @param[in] m Pointer to main stack
* @return Number of cards in stack
*/
uint8_t main_stack_size(const main_stack_t *m)
{
assert(m != NULL);
uint8_t count = 0;
for(uint8_t i = 0; i < MAX_MAIN_STACK_CARDS; i++)
{
if(m->cards[i] == 0)
continue;
count++;
}
return count;
}
|
