int NavDijkstra::FindNearest(const Vector2& start, int type, Path& aPath, int iTurn)
{
Init(start, iTurn);
// Browse
for (m_iHead = 0 ; m_iHead < m_aStep.size() && m_iHead < m_iQueue ; ++m_iHead)
{
uint id = m_aStep[m_iHead];
Case& oCase = m_oPathGrid.GetCase(id);
ASSERT(oCase.iCount != BLOCK);
Vector2 vCoord = m_oPathGrid.GetCoord(id);
ASSERT(m_oPathGrid.GetIndex(vCoord) == id);
int dir_offset = rand() % CardDirCount;
for (int dir = 0 ; dir < CardDirCount ; ++dir)
{
Vector2 vSideCoord = m_oPathGrid.GetCoord(vCoord, (EDirection)((dir + dir_offset)%CardDirCount));
Case& oSideCase = m_oPathGrid.GetCase(vSideCoord);
if (oSideCase.iCount == BLANK)
{
oSideCase.iCount = oCase.iCount + 1;
oSideCase.iPreviousCase = id;
ASSERT(m_oPathGrid.DistanceSq(m_oPathGrid.GetCoord(id), vSideCoord) == 1);
uint iSideId = m_oPathGrid.GetIndex(vSideCoord);
m_aStep[m_iQueue++] = iSideId;
}
const Square& square = m_pModelGrid->GetCase(vSideCoord);
if (!square.IsWater())
{
int sqtype = None;
if (!square.IsDiscovered(iTurn)) sqtype |= Undiscovered;
if (!square.IsVisible()) sqtype |= Unvisible;
if (square.IsFood()) sqtype |= Food;
if (square.IsEnemyHill()) sqtype |= EnemyHill;
if (square.HasEnemyAnt()) sqtype |= EnemyAnt;
if (square.IsFriendHill()) sqtype |= FriendHill;
if (square.HasFriendAnt()) sqtype |= FriendAnt;
if (square.GetAntInfluence() > 0) sqtype |= Safe;
if (type & sqtype)
{
GetPath((oSideCase.iCount == BLOCK ? vCoord : vSideCoord), aPath);
ASSERT(aPath.GetLength() > 0);
return sqtype;
}
}
}
}
return None;
}
bool BLWorld::TestPath(const Path& oPath) const
{
for (uint i=0 ; i<oPath.GetLength() ; ++i)
{
const BLSquare& sq = m_pMap->GetGrid()[oPath[i]];
if (sq.GetProp() != NULL && sq.IsTempBlock())
return false;
}
return true;
}
