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vcmi/lib/BattleState.h
2011-02-24 15:33:03 +00:00

240 lines
14 KiB
C++

#pragma once
#include "../global.h"
#include "HeroBonus.h"
#include "CCreatureSet.h"
#include "CObjectHandler.h"
#include "CCreatureHandler.h"
#include "ConstTransitivePtr.h"
/*
* BattleState.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
class CGHeroInstance;
class CStack;
class CArmedInstance;
class CGTownInstance;
class CStackInstance;
struct BattleStackAttacked;
struct DLL_EXPORT CObstacleInstance
{
int uniqueID;
int ID; //ID of obstacle (defines type of it)
int pos; //position on battlefield
template <typename Handler> void serialize(Handler &h, const int version)
{
h & ID & pos & uniqueID;
}
};
//only for use in BattleInfo
struct DLL_EXPORT SiegeInfo
{
ui8 wallState[8]; //[0] - keep, [1] - bottom tower, [2] - bottom wall, [3] - below gate, [4] - over gate, [5] - upper wall, [6] - uppert tower, [7] - gate; 1 - intact, 2 - damaged, 3 - destroyed
template <typename Handler> void serialize(Handler &h, const int version)
{
h & wallState;
}
};
struct DLL_EXPORT BattleInfo : public CBonusSystemNode
{
ui8 sides[2]; //sides[0] - attacker, sides[1] - defender
si32 round, activeStack;
ui8 siege; // = 0 ordinary battle = 1 a siege with a Fort = 2 a siege with a Citadel = 3 a siege with a Castle
const CGTownInstance * town; //used during town siege - id of attacked town; -1 if not town defence
int3 tile; //for background and bonuses
CGHeroInstance *heroes[2];
CArmedInstance *belligerents[2]; //may be same as heroes
std::vector<CStack*> stacks;
std::vector<CObstacleInstance> obstacles;
ui8 castSpells[2]; //how many spells each side has cast this turn [0] - attacker, [1] - defender
std::vector<const CSpell *> usedSpellsHistory[2]; //each time hero casts spell, it's inserted here -> eagle eye skill
SiegeInfo si;
si32 battlefieldType;
ui8 tacticsSide; //which side is requested to play tactics phase
ui8 tacticDistance; //how many hexes we can go forward (1 = only hexes adjacent to margin line)
template <typename Handler> void serialize(Handler &h, const int version)
{
h & sides & round & activeStack & siege & town & tile & stacks & belligerents & obstacles
& castSpells & si & battlefieldType;
h & heroes;
h & usedSpellsHistory;
h & tacticsSide & tacticDistance;
h & static_cast<CBonusSystemNode&>(*this);
}
//////////////////////////////////////////////////////////////////////////
//void getBonuses(BonusList &out, const CSelector &selector, const CBonusSystemNode *root = NULL) const;
//////////////////////////////////////////////////////////////////////////
const CStack * getNextStack() const; //which stack will have turn after current one
void getStackQueue(std::vector<const CStack *> &out, int howMany, int turn = 0, int lastMoved = -1) const; //returns stack in order of their movement action
CStack * getStack(int stackID, bool onlyAlive = true);
const CStack * getStack(int stackID, bool onlyAlive = true) const;
CStack * getStackT(THex tileID, bool onlyAlive = true);
const CStack * getStackT(THex tileID, bool onlyAlive = true) const;
void getAccessibilityMap(bool *accessibility, bool twoHex, bool attackerOwned, bool addOccupiable, std::set<THex> & occupyable, bool flying, const CStack* stackToOmmit = NULL) const; //send pointer to at least 187 allocated bytes
static bool isAccessible(THex hex, bool * accessibility, bool twoHex, bool attackerOwned, bool flying, bool lastPos); //helper for makeBFS
void makeBFS(THex start, bool*accessibility, THex *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
std::pair< std::vector<THex>, int > getPath(THex start, THex dest, bool*accessibility, bool flyingCreature, bool twoHex, bool attackerOwned); //returned value: pair<path, length>; length may be different than number of elements in path since flying vreatures jump between distant hexes
std::vector<THex> getAccessibility(const CStack * stack, bool addOccupiable) const; //returns vector of accessible tiles (taking into account the creature range)
bool isStackBlocked(const CStack * stack) const; //returns true if there is neighboring enemy stack
ui32 calculateDmg(const CStack* attacker, const CStack* defender, const CGHeroInstance * attackerHero, const CGHeroInstance * defendingHero, bool shooting, ui8 charge, bool lucky, bool ballistaDoubleDmg); //charge - number of hexes travelled before attack (for champion's jousting)
TDmgRange calculateDmgRange( const CStack* attacker, const CStack* defender, TQuantity attackerCount, TQuantity defenderCount, const CGHeroInstance * attackerHero, const CGHeroInstance * defendingHero, bool shooting, ui8 charge, bool lucky, bool ballistaDoubleDmg) const; //charge - number of hexes travelled before attack (for champion's jousting); returns pair <min dmg, max dmg>
TDmgRange calculateDmgRange(const CStack* attacker, const CStack* defender, const CGHeroInstance * attackerHero, const CGHeroInstance * defendingHero, bool shooting, ui8 charge, bool lucky, bool ballistaDoubleDmg) const; //charge - number of hexes travelled before attack (for champion's jousting); returns pair <min dmg, max dmg>
void calculateCasualties(std::map<ui32,si32> *casualties) const; //casualties are array of maps size 2 (attacker, defeneder), maps are (crid => amount)
std::set<CStack*> getAttackedCreatures(const CSpell * s, int skillLevel, ui8 attackerOwner, THex destinationTile); //calculates stack affected by given spell
static int calculateSpellDuration(const CSpell * spell, const CGHeroInstance * caster, int usedSpellPower);
CStack * generateNewStack(const CStackInstance &base, int stackID, bool attackerOwned, int slot, THex position) const; //helper for CGameHandler::setupBattle and spells addign new stacks to the battlefield
CStack * generateNewStack(const CStackBasicDescriptor &base, int stackID, bool attackerOwned, int slot, THex position) const; //helper for CGameHandler::setupBattle and spells addign new stacks to the battlefield
ui32 getSpellCost(const CSpell * sp, const CGHeroInstance * caster) const; //returns cost of given spell
int hexToWallPart(THex hex) const; //returns part of destructible wall / gate / keep under given hex or -1 if not found
int lineToWallHex(int line) const; //returns hex with wall in given line
std::pair<const CStack *, THex> 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)
ui32 calculateSpellBonus(ui32 baseDamage, const CSpell * sp, const CGHeroInstance * caster, const CStack * affectedCreature) const;
ui32 calculateSpellDmg(const CSpell * sp, const CGHeroInstance * caster, const CStack * affectedCreature, int spellSchoolLevel, int usedSpellPower) const; //calculates damage inflicted by spell
ui32 calculateHealedHP(const CGHeroInstance * caster, const CSpell * spell, const CStack * stack) const;
si8 hasDistancePenalty(const CStack * stackID, THex destHex) const; //determines if given stack has distance penalty shooting given pos
si8 sameSideOfWall(int pos1, int pos2) const; //determines if given positions are on the same side of wall
si8 hasWallPenalty(const CStack * stack, THex destHex) const; //determines if given stack has wall penalty shooting given pos
si8 canTeleportTo(const CStack * stack, THex destHex, int telportLevel) const; //determines if given stack can teleport to given place
bool battleCanShoot(const CStack * stack, THex dest) const; //determines if stack with given ID shoot at the selected destination
const CGHeroInstance * getHero(int player) const; //returns fighting hero that belongs to given player
SpellCasting::ESpellCastProblem battleCanCastSpell(int player, SpellCasting::ECastingMode mode) const; //returns true if there are no general issues preventing from casting a spell
SpellCasting::ESpellCastProblem battleCanCastThisSpell(int player, const CSpell * spell, SpellCasting::ECastingMode mode) const; //checks if given player can cast given spell
SpellCasting::ESpellCastProblem battleIsImmune(int player, const CSpell * spell, SpellCasting::ECastingMode mode, THex dest) const; //checks for creature immunity / anything that prevent casting *at given hex* - doesn't take into acount general problems such as not having spellbook or mana points etc.
SpellCasting::ESpellCastProblem battleCanCastThisSpellHere(int player, const CSpell * spell, SpellCasting::ECastingMode mode, THex dest); //checks if given player can cast given spell at given tile in given mode
std::vector<ui32> calculateResistedStacks(const CSpell * sp, const CGHeroInstance * caster, const CGHeroInstance * hero2, const std::set<CStack*> affectedCreatures, int casterSideOwner, SpellCasting::ECastingMode mode) const;
bool battleCanFlee(int player) const; //returns true if player can flee from the battle
const CStack * battleGetStack(THex pos, bool onlyAlive); //returns stack at given tile
const CGHeroInstance * battleGetOwner(const CStack * stack) const; //returns hero that owns given stack; NULL if none
si8 battleMinSpellLevel() const; //calculates minimum spell level possible to be cast on battlefield - takes into account artifacts of both heroes; if no effects are set, 0 is returned
void localInit();
static BattleInfo * setupBattle( int3 tile, int terrain, int terType, const CArmedInstance *armies[2], const CGHeroInstance * heroes[2], bool creatureBank, const CGTownInstance *town );
bool isInTacticRange( THex dest ) const;
};
class DLL_EXPORT CStack : public CBonusSystemNode, public CStackBasicDescriptor
{
public:
const CStackInstance *base;
ui32 ID; //unique ID of stack
ui32 baseAmount;
ui32 firstHPleft; //HP of first creature in stack
ui8 owner, slot; //owner - player colour (255 for neutrals), slot - position in garrison (may be 255 for neutrals/called creatures)
ui8 attackerOwned; //if true, this stack is owned by attakcer (this one from left hand side of battle)
THex position; //position on battlefield; -2 - keep, -3 - lower tower, -4 - upper tower
ui8 counterAttacks; //how many counter attacks can be performed more in this turn (by default set at the beginning of the round to 1)
si16 shots; //how many shots left
std::set<ECombatInfo> state;
//overrides
const CCreature* getCreature() const {return type;}
CStack(const CStackInstance *base, int O, int I, bool AO, int S); //c-tor
CStack(const CStackBasicDescriptor *stack, int O, int I, bool AO, int S = 255); //c-tor
CStack(); //c-tor
~CStack();
std::string nodeName() const OVERRIDE;
void init(); //set initial (invalid) values
void postInit(); //used to finish initialization when inheriting creature parameters is working
const Bonus * getEffect(ui16 id, int turn = 0) const; //effect id (SP)
ui8 howManyEffectsSet(ui16 id) const; //returns amount of effects with given id set for this stack
bool willMove(int turn = 0) const; //if stack has remaining move this turn
bool moved(int turn = 0) const; //if stack was already moved this turn
bool canMove(int turn = 0) const; //if stack can move
ui32 Speed(int turn = 0) const; //get speed of creature with all modificators
BonusList getSpellBonuses() const;
static void stackEffectToFeature(std::vector<Bonus> & sf, const Bonus & sse);
std::vector<si32> activeSpells() const; //returns vector of active spell IDs sorted by time of cast
const CGHeroInstance *getMyHero() const; //if stack belongs to hero (directly or was by him summoned) returns hero, NULL otherwise
static inline Bonus featureGenerator(Bonus::BonusType type, si16 subtype, si32 value, ui16 turnsRemain, si32 additionalInfo = 0, si32 limit = Bonus::NO_LIMIT)
{
Bonus hb = makeFeatureVal(type, Bonus::N_TURNS, subtype, value, Bonus::SPELL_EFFECT, turnsRemain, additionalInfo);
hb.effectRange = limit;
hb.source = Bonus::SPELL_EFFECT;
return hb;
}
static inline Bonus featureGeneratorVT(Bonus::BonusType type, si16 subtype, si32 value, ui16 turnsRemain, ui8 valType)
{
Bonus ret = makeFeatureVal(type, Bonus::N_TURNS, subtype, value, Bonus::SPELL_EFFECT, turnsRemain);
ret.valType = valType;
ret.source = Bonus::SPELL_EFFECT;
return ret;
}
static bool isMeleeAttackPossible(const CStack * attacker, const CStack * defender, THex attackerPos = THex::INVALID, THex defenderPos = THex::INVALID);
bool doubleWide() const;
THex occupiedHex() const; //returns number of occupied hex (not the position) if stack is double wide; otherwise -1
void prepareAttacked(BattleStackAttacked &bsa) const; //requires bsa.damageAmout filled
template <typename Handler> void serialize(Handler &h, const int version)
{
assert(isIndependentNode());
h & static_cast<CBonusSystemNode&>(*this);
h & static_cast<CStackBasicDescriptor&>(*this);
h & ID & baseAmount & firstHPleft & owner & slot & attackerOwned & position & state & counterAttacks
& shots & count;
TSlot slot = (base ? base->armyObj->findStack(base) : -1);
const CArmedInstance *army = (base ? base->armyObj : NULL);
if(h.saving)
{
h & army & slot;
}
else
{
h & army & slot;
if(!army || slot == -1 || !army->hasStackAtSlot(slot))
{
base = NULL;
tlog3 << type->nameSing << " don't have a base stack!\n";
}
else
{
base = &army->getStack(slot);
}
}
}
bool alive() const //determines if stack is alive
{
return vstd::contains(state,ALIVE);
}
};
class DLL_EXPORT CMP_stack
{
int phase; //rules of which phase will be used
int turn;
public:
bool operator ()(const CStack* a, const CStack* b);
CMP_stack(int Phase = 1, int Turn = 0);
};