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/*
* BattleHex.cpp, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#include "StdInc.h"
#include "BattleHex.h"
#include "BattleHexArray.h"
VCMI_LIB_NAMESPACE_BEGIN
BattleHex BattleHex::getClosestTile(BattleSide side, const BattleHex & initialPos, const BattleHexArray & hexes)
{
if(hexes.empty())
return BattleHex();
BattleHex initialHex = BattleHex(initialPos);
int closestDistance = std::numeric_limits<int>::max();
BattleHexArray closestTiles;
for(const auto & hex : hexes)
{
int distance = initialHex.getDistance(initialHex, hex);
if(distance < closestDistance)
{
closestDistance = distance;
closestTiles.clear();
closestTiles.insert(hex);
}
else if(distance == closestDistance)
closestTiles.insert(hex);
}
auto compareHorizontal = [side, initialPos](const BattleHex & left, const BattleHex & right)
{
if(left.getX() != right.getX())
{
return (side == BattleSide::ATTACKER) ? (left.getX() > right.getX()) : (left.getX() < right.getX());
}
return std::abs(left.getY() - initialPos.getY()) < std::abs(right.getY() - initialPos.getY());
};
auto bestTile = std::min_element(closestTiles.begin(), closestTiles.end(), compareHorizontal);
return (bestTile != closestTiles.end()) ? *bestTile : BattleHex();
}
const BattleHexArray & BattleHex::getAllNeighbouringTiles() const noexcept
{
return BattleHexArray::getAllNeighbouringTiles(*this);
}
const BattleHexArray & BattleHex::getNeighbouringTiles() const noexcept
{
return BattleHexArray::getNeighbouringTiles(*this);
}
const BattleHexArray & BattleHex::getNeighbouringTilesDoubleWide(BattleSide side) const noexcept
{
return BattleHexArray::getNeighbouringTilesDoubleWide(*this, side);
}
std::ostream & operator<<(std::ostream & os, const BattleHex & hex)
{
return os << hex.toInt();
}
VCMI_LIB_NAMESPACE_END
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