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#include <u.h>
#include <libc.h>
#include "dat.h"
#include "fns.h"
static int
lobby_takeseat(Lobby *l, int fd)
{
if(l->seats.len >= l->seats.cap){
l->seats.cap += 8;
l->seats.fds = erealloc(l->seats.fds, l->seats.cap*sizeof(*l->seats.fds));
}
l->seats.fds[l->seats.len] = fd;
return l->seats.len++;
}
static int
lobby_getcouple(Lobby *l, int *fds)
{
if(l->seats.len >= 2){
fds[0] = l->seats.fds[l->seats.len-2];
fds[1] = l->seats.fds[l->seats.len-1];
if(l->seats.len < l->seats.cap-2)
memmove(&l->seats.fds[l->seats.len], &l->seats.fds[l->seats.len+2], l->seats.cap*sizeof(int) - (l->seats.len + 2)*sizeof(int));
l->seats.len -= 2;
return 0;
}
return -1;
}
static int
lobby_leaveseat(Lobby *l, ulong idx)
{
if(idx < l->seats.cap-1)
memmove(&l->seats.fds[idx], &l->seats.fds[idx+1], l->seats.cap*sizeof(int) - (idx + 1)*sizeof(int));
l->seats.len--;
return 0;
}
Lobby *
newlobby(void)
{
Lobby *l;
l = emalloc(sizeof(Lobby));
memset(l, 0, sizeof(*l));
l->takeseat = lobby_takeseat;
l->getcouple = lobby_getcouple;
l->leaveseat = lobby_leaveseat;
return l;
}
void
dellobby(Lobby *l)
{
free(l->seats.fds);
free(l);
}
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