/// @brief calculates an updated priority for the user
///
/// Base implementation is: priority is based on the z axis of the center of mass and the state
/// @param user The user object whose priority we need to calculate
protected virtual void UpdateUserPriority(NIPlayerCandidateObject user)
{
NIPlayerCOMCandidateObject userCom = user as NIPlayerCOMCandidateObject;
if (userCom == null)
{
return; // irrelevant
}
Vector3 com = m_contextManager.UserGenrator.GetUserCenterOfMass(userCom.OpenNIUserID);
userCom.m_priority = com.z;
if (userCom.m_priority > 0)
{
userCom.m_priority = -m_maxAllowedDistance; // as far away as possible for an illegal value
}
if (user.PlayerStatus == UserStatus.Selected || user.PlayerStatus == UserStatus.Tracking)
{
userCom.m_priority += m_hysteresis;
}
if (userCom.PlayerStatus == UserStatus.Failure)
{
com -= userCom.m_COMWhenFail;
if (com.magnitude < m_minCOMChangeForFailure)
{
userCom.m_priority -= m_failurePenalty;
}
}
}
/// @brief Mono behavior update
public void Update()
{
foreach (NIPlayerCandidateObject user in m_users)
{
UpdateUserPriority(user);
}
// now we sort the users by priority
for (int i = 0; i < m_users.Count; i++)
{
NIPlayerCOMCandidateObject bestUser = m_users[i] as NIPlayerCOMCandidateObject;
int bestIndex = i;
for (int j = i + 1; j < m_users.Count; j++)
{
NIPlayerCOMCandidateObject curUser = m_users[j] as NIPlayerCOMCandidateObject;
if (curUser.m_priority > bestUser.m_priority)
{
bestUser = curUser;
bestIndex = j;
}
}
if (bestIndex != i)
{
m_users[bestIndex] = m_users[i];
m_users[i] = bestUser;
}
}
// now that we are ordered, we need to fill the players. The first N users should be players
// and the rest should not when N is the number of allowed players.
int numUsersToPlayers = Math.Min(m_players.Count, m_users.Count); // the actual number of users which are players
// first we will unselect all irrelevant players
for (int i = numUsersToPlayers; i < m_users.Count; i++)
{
int playerNum = GetPlayerIdFromUser(m_users[i]);
UnselectPlayer(playerNum);
}
// now we just have selected players so we need to select the good ones and put them
// in empty places
for (int i = 0; i < numUsersToPlayers; i++)
{
int playerNum = GetPlayerIdFromUser(m_users[i]);
if (playerNum >= 0)
{
continue; // it is already selected.
}
for (int j = 0; j < m_players.Count; j++)
{
if (m_players[j].Valid == false)
{
m_players[j].User = m_users[i];
m_players[j].User.SelectUser(m_numRetries);
break;
}
}
}
}
