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Code Issues Releases Activity

Optimize Unit::getHexes method

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This commit is contained in:
Ivan Savenko
2025-01-10 15:07:59 +00:00
parent 5375d61d1b
commit 3b35c679ce
5 changed files with 63 additions and 38 deletions
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40
lib/battle/Unit.cpp
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@ -107,24 +107,34 @@ const BattleHexArray & Unit::getHexes(BattleHex assumedPos) const
return getHexes(assumedPos, doubleWide(), unitSide());
}
BattleHexArray::ArrayOfBattleHexArrays Unit::precomputeUnitHexes(BattleSide side, bool twoHex)
{
BattleHexArray::ArrayOfBattleHexArrays result;
for (BattleHex assumedPos = 0; assumedPos < GameConstants::BFIELD_SIZE; ++assumedPos)
{
BattleHexArray hexes;
hexes.insert(assumedPos);
if(twoHex)
hexes.insert(occupiedHex(assumedPos, twoHex, side));
result[assumedPos.toInt()] = std::move(hexes);
}
return result;
}
const BattleHexArray & Unit::getHexes(BattleHex assumedPos, bool twoHex, BattleSide side)
{
static BattleHexArray::ArrayOfBattleHexArrays precomputed[4];
static const std::array<BattleHexArray::ArrayOfBattleHexArrays, 4> precomputed = {
precomputeUnitHexes(BattleSide::ATTACKER, false),
precomputeUnitHexes(BattleSide::ATTACKER, true),
precomputeUnitHexes(BattleSide::DEFENDER, false),
precomputeUnitHexes(BattleSide::DEFENDER, true),
};
int index = side == BattleSide::ATTACKER ? 0 : 2;
if(!precomputed[index + twoHex][assumedPos.toInt()].empty())
return precomputed[index + twoHex][assumedPos.toInt()];
// first run, compute
BattleHexArray hexes;
hexes.insert(assumedPos);
if(twoHex)
hexes.insert(occupiedHex(assumedPos, twoHex, side));
precomputed[index + twoHex][assumedPos.toInt()] = std::move(hexes);
return precomputed[index + twoHex][assumedPos.toInt()];
}