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315 lines
8.7 KiB
C++
315 lines
8.7 KiB
C++
#include "StdInc.h"
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#include "../../lib/AI_Base.h"
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#include "StupidAI.h"
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#include "../../lib/BattleState.h"
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#include "../../CCallback.h"
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#include "../../lib/CCreatureHandler.h"
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CPlayerBattleCallback * cbc;
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CStupidAI::CStupidAI(void)
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: side(-1), cb(NULL)
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{
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print("created");
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}
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CStupidAI::~CStupidAI(void)
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{
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print("destroyed");
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}
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void CStupidAI::init( CBattleCallback * CB )
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{
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print("init called, saving ptr to IBattleCallback");
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cbc = cb = CB;
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}
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void CStupidAI::actionFinished( const BattleAction *action )
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{
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print("actionFinished called");
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}
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void CStupidAI::actionStarted( const BattleAction *action )
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{
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print("actionStarted called");
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}
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struct EnemyInfo
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{
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const CStack * s;
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int adi, adr;
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std::vector<BattleHex> attackFrom; //for melee fight
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EnemyInfo(const CStack * _s) : s(_s)
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{}
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void calcDmg(const CStack * ourStack)
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{
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TDmgRange retal, dmg = cbc->battleEstimateDamage(ourStack, s, &retal);
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adi = (dmg.first + dmg.second) / 2;
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adr = (retal.first + retal.second) / 2;
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}
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bool operator==(const EnemyInfo& ei) const
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{
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return s == ei.s;
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}
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};
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bool isMoreProfitable(const EnemyInfo &ei1, const EnemyInfo& ei2)
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{
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return (ei1.adi-ei1.adr) < (ei2.adi - ei2.adr);
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}
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int distToNearestNeighbour(BattleHex hex, const ReachabilityInfo::TDistances& dists, BattleHex *chosenHex = NULL)
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{
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int ret = 1000000;
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BOOST_FOREACH(BattleHex n, hex.neighbouringTiles())
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{
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if(dists[n] >= 0 && dists[n] < ret)
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{
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ret = dists[n];
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if(chosenHex)
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*chosenHex = n;
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}
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}
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return ret;
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}
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bool isCloser(const EnemyInfo & ei1, const EnemyInfo & ei2, const ReachabilityInfo::TDistances & dists)
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{
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return distToNearestNeighbour(ei1.s->position, dists) < distToNearestNeighbour(ei2.s->position, dists);
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}
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static bool willSecondHexBlockMoreEnemyShooters(const BattleHex &h1, const BattleHex &h2)
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{
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int shooters[2] = {0}; //count of shooters on hexes
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for(int i = 0; i < 2; i++)
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BOOST_FOREACH(BattleHex neighbour, (i ? h2 : h1).neighbouringTiles())
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if(const CStack *s = cbc->battleGetStackByPos(neighbour))
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if(s->getCreature()->isShooting())
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shooters[i]++;
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return shooters[0] < shooters[1];
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}
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BattleAction CStupidAI::activeStack( const CStack * stack )
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{
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//boost::this_thread::sleep(boost::posix_time::seconds(2));
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print("activeStack called for " + stack->nodeName());
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auto dists = cb->battleGetDistances(stack);
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std::vector<EnemyInfo> enemiesShootable, enemiesReachable, enemiesUnreachable;
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if(stack->type->idNumber == 145) //catapult
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{
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BattleAction attack;
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static const int wallHexes[] = {50, 183, 182, 130, 62, 29, 12, 95};
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attack.destinationTile = wallHexes[ rand()%ARRAY_COUNT(wallHexes) ];
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attack.actionType = BattleAction::CATAPULT;
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attack.additionalInfo = 0;
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attack.side = side;
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attack.stackNumber = stack->ID;
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return attack;
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}
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BOOST_FOREACH(const CStack *s, cb->battleGetStacks(CBattleCallback::ONLY_ENEMY))
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{
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if(cb->battleCanShoot(stack, s->position))
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{
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enemiesShootable.push_back(s);
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}
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else
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{
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std::vector<BattleHex> avHexes = cb->battleGetAvailableHexes(stack, false);
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BOOST_FOREACH(BattleHex hex, avHexes)
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{
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if(CStack::isMeleeAttackPossible(stack, s, hex))
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{
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std::vector<EnemyInfo>::iterator i = std::find(enemiesReachable.begin(), enemiesReachable.end(), s);
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if(i == enemiesReachable.end())
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{
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enemiesReachable.push_back(s);
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i = enemiesReachable.begin() + (enemiesReachable.size() - 1);
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}
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i->attackFrom.push_back(hex);
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}
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}
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if(!vstd::contains(enemiesReachable, s) && s->position.isValid())
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enemiesUnreachable.push_back(s);
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}
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}
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if(enemiesShootable.size())
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{
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const EnemyInfo &ei= *std::max_element(enemiesShootable.begin(), enemiesShootable.end(), isMoreProfitable);
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return BattleAction::makeShotAttack(stack, ei.s);
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}
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else if(enemiesReachable.size())
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{
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const EnemyInfo &ei= *std::max_element(enemiesReachable.begin(), enemiesReachable.end(), &isMoreProfitable);
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return BattleAction::makeMeleeAttack(stack, ei.s, *std::max_element(ei.attackFrom.begin(), ei.attackFrom.end(), &willSecondHexBlockMoreEnemyShooters));
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}
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else if(enemiesUnreachable.size()) //due to #955 - a buggy battle may occur when there are no enemies
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{
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assert(enemiesUnreachable.size());
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const EnemyInfo &ei= *std::min_element(enemiesUnreachable.begin(), enemiesUnreachable.end(), boost::bind(isCloser, _1, _2, boost::ref(dists)));
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assert(ei.s);
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if(distToNearestNeighbour(ei.s->position, dists) < GameConstants::BFIELD_SIZE)
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{
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return goTowards(stack, ei.s->position);
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}
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}
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return BattleAction::makeDefend(stack);
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}
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void CStupidAI::battleAttack(const BattleAttack *ba)
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{
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print("battleAttack called");
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}
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void CStupidAI::battleStacksAttacked(const std::vector<BattleStackAttacked> & bsa)
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{
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print("battleStacksAttacked called");
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}
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void CStupidAI::battleEnd(const BattleResult *br)
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{
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print("battleEnd called");
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}
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// void CStupidAI::battleResultsApplied()
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// {
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// print("battleResultsApplied called");
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// }
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void CStupidAI::battleNewRoundFirst(int round)
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{
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print("battleNewRoundFirst called");
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}
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void CStupidAI::battleNewRound(int round)
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{
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print("battleNewRound called");
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}
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void CStupidAI::battleStackMoved(const CStack * stack, std::vector<BattleHex> dest, int distance)
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{
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print("battleStackMoved called");;
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}
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void CStupidAI::battleSpellCast(const BattleSpellCast *sc)
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{
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print("battleSpellCast called");
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}
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void CStupidAI::battleStacksEffectsSet(const SetStackEffect & sse)
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{
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print("battleStacksEffectsSet called");
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}
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void CStupidAI::battleStart(const CCreatureSet *army1, const CCreatureSet *army2, int3 tile, const CGHeroInstance *hero1, const CGHeroInstance *hero2, bool Side)
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{
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print("battleStart called");
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side = Side;
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}
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void CStupidAI::battleStacksHealedRes(const std::vector<std::pair<ui32, ui32> > & healedStacks, bool lifeDrain, bool tentHeal, si32 lifeDrainFrom)
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{
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print("battleStacksHealedRes called");
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}
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void CStupidAI::battleNewStackAppeared(const CStack * stack)
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{
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print("battleNewStackAppeared called");
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}
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void CStupidAI::battleObstaclesRemoved(const std::set<si32> & removedObstacles)
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{
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print("battleObstaclesRemoved called");
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}
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void CStupidAI::battleCatapultAttacked(const CatapultAttack & ca)
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{
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print("battleCatapultAttacked called");
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}
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void CStupidAI::battleStacksRemoved(const BattleStacksRemoved & bsr)
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{
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print("battleStacksRemoved called");
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}
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void CStupidAI::print(const std::string &text) const
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{
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tlog6 << "CStupidAI [" << this <<"]: " << text << std::endl;
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}
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BattleAction CStupidAI::goTowards(const CStack * stack, BattleHex destination)
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{
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assert(destination.isValid());
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auto avHexes = cb->battleGetAvailableHexes(stack, false);
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auto reachability = cb->getReachability(stack);
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if(vstd::contains(avHexes, destination))
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return BattleAction::makeMove(stack, destination);
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auto destNeighbours = destination.neighbouringTiles();
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if(vstd::contains_if(destNeighbours, [&](BattleHex n) { return stack->coversPos(destination); }))
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{
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tlog3 << "Warning: already standing on neighbouring tile!" << std::endl;
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//We shouldn't even be here...
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return BattleAction::makeDefend(stack);
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}
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vstd::erase_if(destNeighbours, [&](BattleHex hex){ return !reachability.accessibility.accessible(hex, stack); });
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if(!avHexes.size() || !destNeighbours.size()) //we are blocked or dest is blocked
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{
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print("goTowards: Stack cannot move! That's " + stack->nodeName());
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return BattleAction::makeDefend(stack);
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}
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if(stack->hasBonusOfType(Bonus::FLYING))
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{
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// Flying stack doesn't go hex by hex, so we can't backtrack using predecessors.
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// We just check all available hexes and pick the one closest to the target.
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auto distToDestNeighbour = [&](BattleHex hex) -> int
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{
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auto nearestNeighbourToHex = vstd::minElementByFun(destNeighbours, [&](BattleHex a)
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{
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return BattleHex::getDistance(a, hex);
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});
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return BattleHex::getDistance(*nearestNeighbourToHex, hex);
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};
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auto nearestAvailableHex = vstd::minElementByFun(avHexes, distToDestNeighbour);
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return BattleAction::makeMove(stack, *nearestAvailableHex);
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}
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else
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{
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BattleHex bestNeighbor = destination;
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if(distToNearestNeighbour(destination, reachability.distances, &bestNeighbor) > GameConstants::BFIELD_SIZE)
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{
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print("goTowards: Cannot reach");
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return BattleAction::makeDefend(stack);
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}
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BattleHex currentDest = bestNeighbor;
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while(1)
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{
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assert(currentDest.isValid());
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if(vstd::contains(avHexes, currentDest))
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return BattleAction::makeMove(stack, currentDest);
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currentDest = reachability.predecessors[currentDest];
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}
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}
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}
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