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AI hero exchange improvement: split last creature stack

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This commit is contained in:
Dydzio
2019-02-12 17:20:59 +01:00
parent ba803deb58
commit 18e139d9e3
1 changed files with 31 additions and 13 deletions
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44
AI/VCAI/VCAI.cpp
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@@ -1066,13 +1066,12 @@ bool VCAI::canGetArmy(const CGHeroInstance * army, const CGHeroInstance * source
{
for(auto & i : armyPtr->Slots())
{
//TODO: allow splitting stacks?
creToPower[i.second->type] += i.second->getPower();
}
}
//TODO - consider more than just power (ie morale penalty, hero specialty in certain stacks, etc)
int armySize = creToPower.size();
armySize = std::min((source->needsLastStack() ? armySize - 1 : armySize), GameConstants::ARMY_SIZE); //can't move away last stack
armySize = std::min(armySize, GameConstants::ARMY_SIZE);
std::vector<const CCreature *> bestArmy; //types that'll be in final dst army
for(int i = 0; i < armySize; i++) //pick the creatures from which we can get most power, as many as dest can fit
{
@@ -1096,8 +1095,7 @@ bool VCAI::canGetArmy(const CGHeroInstance * army, const CGHeroInstance * source
{
if(armyPtr->getCreature(SlotID(j)) == bestArmy[i] && armyPtr != army) //it's a searched creature not in dst ARMY
{
//FIXME: line below is useless when simulating exchange between two non-singular armies
if(!(armyPtr->needsLastStack() && armyPtr->stacksCount() == 1)) //can't take away last creature
if(!(armyPtr->needsLastStack() && (armyPtr->stacksCount() == 1) && armyPtr->getStackCount(SlotID(j)) < 2)) //can't take away or split last creature
return true; //at least one exchange will be performed
else
return false; //no further exchange possible
@@ -1108,10 +1106,9 @@ bool VCAI::canGetArmy(const CGHeroInstance * army, const CGHeroInstance * source
return false;
}
void VCAI::pickBestCreatures(const CArmedInstance * army, const CArmedInstance * source)
void VCAI::pickBestCreatures(const CArmedInstance * destinationArmy, const CArmedInstance * source)
{
//TODO - what if source is a hero (the last stack problem) -> it'd good to create a single stack of weakest cre
const CArmedInstance * armies[] = {army, source};
const CArmedInstance * armies[] = {destinationArmy, source};
//we calculate total strength for each creature type available in armies
std::map<const CCreature *, int> creToPower;
@@ -1119,14 +1116,13 @@ void VCAI::pickBestCreatures(const CArmedInstance * army, const CArmedInstance *
{
for(auto & i : armyPtr->Slots())
{
//TODO: allow splitting stacks?
creToPower[i.second->type] += i.second->getPower();
}
}
//TODO - consider more than just power (ie morale penalty, hero specialty in certain stacks, etc)
int armySize = creToPower.size();
armySize = std::min((source->needsLastStack() ? armySize - 1 : armySize), GameConstants::ARMY_SIZE); //can't move away last stack
armySize = std::min(armySize, GameConstants::ARMY_SIZE);
std::vector<const CCreature *> bestArmy; //types that'll be in final dst army
for(int i = 0; i < armySize; i++) //pick the creatures from which we can get most power, as many as dest can fit
{
@@ -1148,10 +1144,32 @@ void VCAI::pickBestCreatures(const CArmedInstance * army, const CArmedInstance *
{
for(int j = 0; j < GameConstants::ARMY_SIZE; j++)
{
if(armyPtr->getCreature(SlotID(j)) == bestArmy[i] && (i != j || armyPtr != army)) //it's a searched creature not in dst SLOT
if(armyPtr->getCreature(SlotID(j)) == bestArmy[i] && (i != j || armyPtr != destinationArmy)) //it's a searched creature not in dst SLOT
{
if(!(armyPtr->needsLastStack() && armyPtr->stacksCount() == 1)) //can't take away last creature
cb->mergeOrSwapStacks(armyPtr, army, SlotID(j), SlotID(i));
if(!(armyPtr->needsLastStack() && armyPtr->stacksCount() == 1)) //can't take away last creature without split
cb->mergeOrSwapStacks(armyPtr, destinationArmy, SlotID(j), SlotID(i));
else
{
//TODO: Improve logic by splitting weakest creature, instead of creature that becomes last stack
SlotID sourceSlot = SlotID(j);
int lastStackCount = armyPtr->getStackCount(sourceSlot);
if(lastStackCount > 1) //we can perform exchange if we need creature and split is possible
{
SlotID destinationSlot = SlotID(i);
for(int candidateSlot = 0; candidateSlot < GameConstants::ARMY_SIZE; candidateSlot++) //check if there are some creatures of same type in destination army slots - add to them instead of first available empty slot
{
if(destinationArmy->getCreature(SlotID(candidateSlot)) && (destinationArmy->getCreature(SlotID(candidateSlot))->idNumber == armyPtr->getCreature(SlotID(j))->idNumber))
{
destinationSlot = SlotID(candidateSlot);
break;
}
}
//last cb->splitStack argument is total amount of creatures expected after exchange so if slot is not empty we need to add to existing creatures
int destinationSlotCreatureCount = destinationArmy->getStackCount(destinationSlot);
cb->splitStack(armyPtr, destinationArmy, sourceSlot, destinationSlot, lastStackCount + destinationSlotCreatureCount - 1);
}
}
}
}
}
@@ -1159,7 +1177,7 @@ void VCAI::pickBestCreatures(const CArmedInstance * army, const CArmedInstance *
//TODO - having now strongest possible army, we may want to think about arranging stacks
auto hero = dynamic_cast<const CGHeroInstance *>(army);
auto hero = dynamic_cast<const CGHeroInstance *>(destinationArmy);
if(hero)
checkHeroArmy(hero);
}