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CGTownInstance: implement armies merging on siege. Fix issue 169

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Merging algorithm is replicate one from original game.
This commit is contained in:
Arseniy Shestakov 2016-02-21 22:23:47 +03:00
parent 7eb8dbe0e9
commit d15106bf63
2 changed files with 59 additions and 1 deletions
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59
lib/mapObjects/CGTownInstance.cpp
View File

@ -535,8 +535,12 @@ void CGTownInstance::onHeroVisit(const CGHeroInstance * h) const
bool outsideTown = (defendingHero == visitingHero && garrisonHero);
//TODO
//"borrowing" army from garrison to visiting hero
if(!outsideTown && armedGarrison() &&
visitingHero && defendingHero == visitingHero)
{
mergeGarrisonOnSiege();
}
cb->startBattlePrimary(h, defendingArmy, getSightCenter(), h, defendingHero, false, (outsideTown ? nullptr : this));
}
@ -725,6 +729,59 @@ void CGTownInstance::getOutOffsets( std::vector<int3> &offsets ) const
offsets = {int3(-1,2,0), int3(-3,2,0)};
}
void CGTownInstance::mergeGarrisonOnSiege() const
{
auto getWeakestStackSlot = [&](int powerLimit)
{
std::vector<SlotID> weakSlots;
auto stacksList = visitingHero->stacks;
std::pair<SlotID, CStackInstance *> pair;
while(stacksList.size())
{
pair = *vstd::minElementByFun(stacksList, [&](std::pair<SlotID, CStackInstance *> elem)
{
return elem.second->getPower();
});
if(powerLimit > pair.second->getPower() &&
(weakSlots.empty() || pair.second->getPower() == visitingHero->getStack(weakSlots.front()).getPower()))
{
weakSlots.push_back(pair.first);
stacksList.erase(pair.first);
}
else
break;
}
if(weakSlots.size())
return *std::max_element(weakSlots.begin(), weakSlots.end());
return SlotID();
};
int count = stacks.size();
for(int i = 0; i < count; i++)
{
auto pair = *vstd::maxElementByFun(stacks, [&](std::pair<SlotID, CStackInstance *> elem)
{
ui64 power = elem.second->getPower();
auto dst = visitingHero->getSlotFor(elem.second->getCreatureID());
if(dst.validSlot() && visitingHero->hasStackAtSlot(dst))
power += visitingHero->getStack(dst).getPower();
return power;
});
auto dst = visitingHero->getSlotFor(pair.second->getCreatureID());
if(dst.validSlot())
cb->moveStack(StackLocation(this, pair.first), StackLocation(visitingHero, dst), -1);
else
{
dst = getWeakestStackSlot(pair.second->getPower());
if(dst.validSlot())
cb->swapStacks(StackLocation(this, pair.first), StackLocation(visitingHero, dst));
}
}
}
void CGTownInstance::removeCapitols (PlayerColor owner) const
{
if (hasCapitol()) // search if there's an older capitol

1
lib/mapObjects/CGTownInstance.h
View File

@ -237,6 +237,7 @@ public:
CBuilding::TRequired genBuildingRequirements(BuildingID build, bool includeUpgrade=true) const;
void mergeGarrisonOnSiege() const; // merge garrison into army of visiting hero
void removeCapitols (PlayerColor owner) const;
void addHeroToStructureVisitors(const CGHeroInstance *h, si32 structureInstanceID) const; //hero must be visiting or garrisoned in town