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#include <string.h>
#include "common.h"
#include "snapshot.h"
int dp_snapshot_put_player(struct snapshot *s, uint32_t id, const struct player *p)
{
if (!s || !p)
return -1;
if (id >= LENGTH(s->players))
return -1;
s->players[id] = *p;
s->players[id].state = STATE_ACTIVE;
return 0;
}
struct player *dp_snapshot_get_player(struct snapshot *s, uint32_t id)
{
struct player *p;
if (!s)
return NULL;
if (id >= LENGTH(s->players))
return NULL;
p = &s->players[id];
if (p->state == STATE_INACTIVE)
return NULL;
return p;
}
int dp_snapshot_remove_player(struct snapshot *s, uint32_t id)
{
struct player *p;
if (!s)
return -1;
if (id >= LENGTH(s->players))
return -1;
p = dp_snapshot_get_player(s, id);
memset(p, 0, sizeof(*p));
p->state = STATE_REMOVED;
return 0;
}
int dp_snapshot_set_player_input(struct snapshot *s, uint32_t id, uint8_t input)
{
struct player *p;
if (!(p = dp_snapshot_get_player(s, id)))
return -1;
p->input = input;
return 0;
}
int dp_snapshot_put_ball(struct snapshot *s, uint32_t id, const struct ball *b)
{
if (!s || !b)
return -1;
if (id >= LENGTH(s->balls))
return -1;
s->balls[id] = *b;
s->balls[id].state = STATE_ACTIVE;
return 0;
}
struct ball *dp_snapshot_get_ball(struct snapshot *s, uint32_t id)
{
struct ball *b;
if (!s)
return NULL;
if (id >= LENGTH(s->balls))
return NULL;
b = &s->balls[id];
if (b->state == STATE_INACTIVE)
return NULL;
return b;
}
int dp_snapshot_remove_ball(struct snapshot *s, uint32_t id)
{
struct ball *b;
if (!s)
return -1;
if (id >= LENGTH(s->balls))
return -1;
b = dp_snapshot_get_ball(s, id);
memset(b, 0, sizeof(*b));
b->state = STATE_REMOVED;
return 0;
}
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