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309 lines
15 KiB
C++
309 lines
15 KiB
C++
/*
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* BattleState.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#pragma once
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#include "BattleHex.h"
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#include "HeroBonus.h"
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#include "CCreatureSet.h"
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#include "mapObjects/CArmedInstance.h" // for army serialization
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#include "mapObjects/CGHeroInstance.h" // for commander serialization
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#include "CCreatureHandler.h"
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#include "CObstacleInstance.h"
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#include "ConstTransitivePtr.h"
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#include "GameConstants.h"
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#include "CBattleCallback.h"
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#include "int3.h"
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#include "spells/Magic.h"
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class CGHeroInstance;
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class CStack;
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class CArmedInstance;
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class CGTownInstance;
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class CStackInstance;
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struct BattleStackAttacked;
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class CRandomGenerator;
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//only for use in BattleInfo
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struct DLL_LINKAGE SiegeInfo
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{
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std::array<si8, EWallPart::PARTS_COUNT> wallState;
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// return EWallState decreased by value of damage points
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static EWallState::EWallState applyDamage(EWallState::EWallState state, unsigned int value)
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{
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if (value == 0)
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return state;
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switch (applyDamage(state, value - 1))
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{
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case EWallState::INTACT : return EWallState::DAMAGED;
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case EWallState::DAMAGED : return EWallState::DESTROYED;
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case EWallState::DESTROYED : return EWallState::DESTROYED;
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default: return EWallState::NONE;
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}
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}
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template <typename Handler> void serialize(Handler &h, const int version)
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{
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h & wallState;
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}
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};
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struct DLL_LINKAGE SideInBattle
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{
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PlayerColor color;
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const CGHeroInstance *hero; //may be NULL if army is not commanded by hero
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const CArmedInstance *armyObject; //adv. map object with army that participates in battle; may be same as hero
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ui8 castSpellsCount; //how many spells each side has cast this turn
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std::vector<const CSpell *> usedSpellsHistory; //every time hero casts spell, it's inserted here -> eagle eye skill
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si16 enchanterCounter; //tends to pass through 0, so sign is needed
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SideInBattle();
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void init(const CGHeroInstance *Hero, const CArmedInstance *Army);
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template <typename Handler> void serialize(Handler &h, const int version)
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{
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h & color & hero & armyObject;
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h & castSpellsCount & usedSpellsHistory & enchanterCounter;
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}
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};
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struct DLL_LINKAGE BattleInfo : public CBonusSystemNode, public CBattleInfoCallback
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{
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std::array<SideInBattle, 2> sides; //sides[0] - attacker, sides[1] - defender
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si32 round, activeStack, selectedStack;
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const CGTownInstance * town; //used during town siege, nullptr if this is not a siege (note that fortless town IS also a siege)
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int3 tile; //for background and bonuses
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std::vector<CStack*> stacks;
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std::vector<shared_ptr<CObstacleInstance> > obstacles;
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SiegeInfo si;
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BFieldType battlefieldType; //like !!BA:B
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ETerrainType terrainType; //used for some stack nativity checks (not the bonus limiters though that have their own copy)
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ui8 tacticsSide; //which side is requested to play tactics phase
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ui8 tacticDistance; //how many hexes we can go forward (1 = only hexes adjacent to margin line)
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template <typename Handler> void serialize(Handler &h, const int version)
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{
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h & sides;
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h & round & activeStack & selectedStack & town & tile & stacks & obstacles
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& si & battlefieldType & terrainType;
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h & tacticsSide & tacticDistance;
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h & static_cast<CBonusSystemNode&>(*this);
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}
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//////////////////////////////////////////////////////////////////////////
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BattleInfo();
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~BattleInfo(){};
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//////////////////////////////////////////////////////////////////////////
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CStack * getStackT(BattleHex tileID, bool onlyAlive = true);
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CStack * getStack(int stackID, bool onlyAlive = true);
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using CBattleInfoEssentials::battleGetArmyObject;
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CArmedInstance * battleGetArmyObject(ui8 side) const;
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using CBattleInfoEssentials::battleGetFightingHero;
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CGHeroInstance * battleGetFightingHero(ui8 side) const;
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const CStack * getNextStack() const; //which stack will have turn after current one
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//void getStackQueue(std::vector<const CStack *> &out, int howMany, int turn = 0, int lastMoved = -1) const; //returns stack in order of their movement action
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//void getAccessibilityMap(bool *accessibility, bool twoHex, bool attackerOwned, bool addOccupiable, std::set<BattleHex> & occupyable, bool flying, const CStack* stackToOmmit = nullptr) const; //send pointer to at least 187 allocated bytes
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//static bool isAccessible(BattleHex hex, bool * accessibility, bool twoHex, bool attackerOwned, bool flying, bool lastPos); //helper for makeBFS
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int getAvaliableHex(CreatureID creID, bool attackerOwned, int initialPos = -1) const; //find place for summon / clone effects
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//void makeBFS(BattleHex start, bool*accessibility, BattleHex *predecessor, int *dists, bool twoHex, bool attackerOwned, bool flying, bool fillPredecessors) const; //*accessibility must be prepared bool[187] array; last two pointers must point to the at least 187-elements int arrays - there is written result
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std::pair< std::vector<BattleHex>, int > getPath(BattleHex start, BattleHex dest, const CStack *stack); //returned value: pair<path, length>; length may be different than number of elements in path since flying vreatures jump between distant hexes
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//std::vector<BattleHex> getAccessibility(const CStack * stack, bool addOccupiable, std::vector<BattleHex> * attackable = nullptr, bool forPassingBy = false) const; //returns vector of accessible tiles (taking into account the creature range)
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//bool isObstacleVisibleForSide(const CObstacleInstance &obstacle, ui8 side) const;
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shared_ptr<CObstacleInstance> getObstacleOnTile(BattleHex tile) const;
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std::set<BattleHex> getStoppers(bool whichSidePerspective) const;
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ui32 calculateDmg(const CStack* attacker, const CStack* defender, const CGHeroInstance * attackerHero, const CGHeroInstance * defendingHero, bool shooting, ui8 charge, bool lucky, bool unlucky, bool deathBlow, bool ballistaDoubleDmg, CRandomGenerator & rand); //charge - number of hexes travelled before attack (for champion's jousting)
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void calculateCasualties(std::map<ui32,si32> *casualties) const; //casualties are array of maps size 2 (attacker, defeneder), maps are (crid => amount)
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//void getPotentiallyAttackableHexes(AttackableTiles &at, const CStack* attacker, BattleHex destinationTile, BattleHex attackerPos); //hexes around target that could be attacked in melee
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//std::set<CStack*> getAttackedCreatures(const CStack* attacker, BattleHex destinationTile, BattleHex attackerPos = BattleHex::INVALID); //calculates range of multi-hex attacks
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//std::set<BattleHex> getAttackedHexes(const CStack* attacker, BattleHex destinationTile, BattleHex attackerPos = BattleHex::INVALID); //calculates range of multi-hex attacks
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CStack * generateNewStack(const CStackInstance &base, bool attackerOwned, SlotID slot, BattleHex position) const; //helper for CGameHandler::setupBattle and spells addign new stacks to the battlefield
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CStack * generateNewStack(const CStackBasicDescriptor &base, bool attackerOwned, SlotID slot, BattleHex position) const; //helper for CGameHandler::setupBattle and spells addign new stacks to the battlefield
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int getIdForNewStack() const; //suggest a currently unused ID that'd suitable for generating a new stack
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//std::pair<const CStack *, BattleHex> getNearestStack(const CStack * closest, boost::logic::tribool attackerOwned) const; //if attackerOwned is indetermnate, returened stack is of any owner; hex is the number of hex we should be looking from; returns (nerarest creature, predecessorHex)
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const CGHeroInstance * getHero(PlayerColor player) const; //returns fighting hero that belongs to given player
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const CStack * battleGetStack(BattleHex pos, bool onlyAlive); //returns stack at given tile
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const CGHeroInstance * battleGetOwner(const CStack * stack) const; //returns hero that owns given stack; nullptr if none
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void localInit();
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void localInitStack(CStack * s);
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static BattleInfo * setupBattle( int3 tile, ETerrainType terrain, BFieldType battlefieldType, const CArmedInstance *armies[2], const CGHeroInstance * heroes[2], bool creatureBank, const CGTownInstance *town );
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//bool hasNativeStack(ui8 side) const;
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PlayerColor theOtherPlayer(PlayerColor player) const;
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ui8 whatSide(PlayerColor player) const;
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static BattlefieldBI::BattlefieldBI battlefieldTypeToBI(BFieldType bfieldType); //converts above to ERM BI format
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static int battlefieldTypeToTerrain(int bfieldType); //converts above to ERM BI format
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};
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class DLL_LINKAGE CStack : public CBonusSystemNode, public CStackBasicDescriptor, public ISpellCaster
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{
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public:
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const CStackInstance *base; //garrison slot from which stack originates (nullptr for war machines, summoned cres, etc)
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ui32 ID; //unique ID of stack
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ui32 baseAmount;
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ui32 firstHPleft; //HP of first creature in stack
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PlayerColor owner; //owner - player colour (255 for neutrals)
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SlotID slot; //slot - position in garrison (may be 255 for neutrals/called creatures)
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bool attackerOwned; //if true, this stack is owned by attakcer (this one from left hand side of battle)
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BattleHex position; //position on battlefield; -2 - keep, -3 - lower tower, -4 - upper tower
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///how many times this stack has been counterattacked this round
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ui8 counterAttacksPerformed;
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///cached total count of counterattacks; should be cleared each round;do not serialize
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mutable ui8 counterAttacksTotalCache;
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si16 shots; //how many shots left
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ui8 casts; //how many casts left
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TQuantity resurrected; // these units will be taken back after battle is over
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///id of alive clone of this stack clone if any
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si32 cloneID;
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std::set<EBattleStackState::EBattleStackState> state;
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//overrides
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const CCreature* getCreature() const {return type;}
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CStack(const CStackInstance *base, PlayerColor O, int I, bool AO, SlotID S); //c-tor
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CStack(const CStackBasicDescriptor *stack, PlayerColor O, int I, bool AO, SlotID S = SlotID(255)); //c-tor
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CStack(); //c-tor
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~CStack();
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std::string nodeName() const override;
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void init(); //set initial (invalid) values
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void postInit(); //used to finish initialization when inheriting creature parameters is working
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std::string getName() const; //plural or singular
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bool willMove(int turn = 0) const; //if stack has remaining move this turn
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bool ableToRetaliate() const; //if stack can retaliate after attacked
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///how many times this stack can counterattack in one round
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ui8 counterAttacksTotal() const;
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///how many times this stack can counterattack in one round more
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si8 counterAttacksRemaining() const;
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bool moved(int turn = 0) const; //if stack was already moved this turn
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bool waited(int turn = 0) const;
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bool canMove(int turn = 0) const; //if stack can move
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bool canBeHealed() const; //for first aid tent - only harmed stacks that are not war machines
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///returns actual heal value based on internal state
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ui32 calculateHealedHealthPoints(ui32 toHeal, const bool resurrect) const;
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ui32 level() const;
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si32 magicResistance() const override; //include aura of resistance
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static void stackEffectToFeature(std::vector<Bonus> & sf, const Bonus & sse);
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std::vector<si32> activeSpells() const; //returns vector of active spell IDs sorted by time of cast
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const CGHeroInstance *getMyHero() const; //if stack belongs to hero (directly or was by him summoned) returns hero, nullptr otherwise
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static inline Bonus featureGenerator(Bonus::BonusType type, si16 subtype, si32 value, ui16 turnsRemain, si32 additionalInfo = 0, Bonus::LimitEffect limit = Bonus::NO_LIMIT)
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{
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Bonus hb = makeFeatureVal(type, Bonus::N_TURNS, subtype, value, Bonus::SPELL_EFFECT, turnsRemain, additionalInfo);
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hb.effectRange = limit;
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return hb;
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}
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static bool isMeleeAttackPossible(const CStack * attacker, const CStack * defender, BattleHex attackerPos = BattleHex::INVALID, BattleHex defenderPos = BattleHex::INVALID);
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bool doubleWide() const;
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BattleHex occupiedHex() const; //returns number of occupied hex (not the position) if stack is double wide; otherwise -1
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BattleHex occupiedHex(BattleHex assumedPos) const; //returns number of occupied hex (not the position) if stack is double wide and would stand on assumedPos; otherwise -1
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std::vector<BattleHex> getHexes() const; //up to two occupied hexes, starting from front
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std::vector<BattleHex> getHexes(BattleHex assumedPos) const; //up to two occupied hexes, starting from front
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static std::vector<BattleHex> getHexes(BattleHex assumedPos, bool twoHex, bool AttackerOwned); //up to two occupied hexes, starting from front
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bool coversPos(BattleHex position) const; //checks also if unit is double-wide
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std::vector<BattleHex> getSurroundingHexes(BattleHex attackerPos = BattleHex::INVALID) const; // get six or 8 surrounding hexes depending on creature size
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std::pair<int,int> countKilledByAttack(int damageReceived) const; //returns pair<killed count, new left HP>
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void prepareAttacked(BattleStackAttacked &bsa, CRandomGenerator & rand, boost::optional<int> customCount = boost::none) const; //requires bsa.damageAmout filled
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///ISpellCaster
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ui8 getSpellSchoolLevel(const CSpell * spell, int *outSelectedSchool = nullptr) const override;
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ui32 getSpellBonus(const CSpell * spell, ui32 base, const CStack * affectedStack) const override;
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///default spell school level for effect calculation
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int getEffectLevel(const CSpell * spell) const override;
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///default spell-power for damage/heal calculation
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int getEffectPower(const CSpell * spell) const override;
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///default spell-power for timed effects duration
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int getEnchantPower(const CSpell * spell) const override;
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///damage/heal override(ignores spell configuration, effect level and effect power)
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int getEffectValue(const CSpell * spell) const override;
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const PlayerColor getOwner() const override;
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template <typename Handler> void serialize(Handler &h, const int version)
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{
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assert(isIndependentNode());
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h & static_cast<CBonusSystemNode&>(*this);
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h & static_cast<CStackBasicDescriptor&>(*this);
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h & ID & baseAmount & firstHPleft & owner & slot & attackerOwned & position & state & counterAttacksPerformed
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& shots & casts & count & resurrected;
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const CArmedInstance *army = (base ? base->armyObj : nullptr);
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SlotID slot = (base ? base->armyObj->findStack(base) : SlotID());
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if(h.saving)
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{
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h & army & slot;
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}
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else
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{
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h & army & slot;
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if (slot == SlotID::COMMANDER_SLOT_PLACEHOLDER) //TODO
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{
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auto hero = dynamic_cast<const CGHeroInstance *>(army);
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assert (hero);
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base = hero->commander;
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}
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else if(!army || slot == SlotID() || !army->hasStackAtSlot(slot))
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{
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base = nullptr;
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logGlobal->warnStream() << type->nameSing << " doesn't have a base stack!";
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}
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else
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{
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base = &army->getStack(slot);
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}
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}
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}
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bool alive() const //determines if stack is alive
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{
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return vstd::contains(state,EBattleStackState::ALIVE);
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}
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bool idDeadClone() const //determines if stack is alive
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{
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return vstd::contains(state,EBattleStackState::DEAD_CLONE);
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}
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bool isValidTarget(bool allowDead = false) const; //alive non-turret stacks (can be attacked or be object of magic effect)
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};
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class DLL_LINKAGE CMP_stack
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{
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int phase; //rules of which phase will be used
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int turn;
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public:
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bool operator ()(const CStack* a, const CStack* b);
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CMP_stack(int Phase = 1, int Turn = 0);
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};
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