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528 lines
21 KiB
C++
528 lines
21 KiB
C++
#include "aicombataction.hpp"
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#include <components/esm/loadench.hpp>
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#include <components/esm/loadmgef.hpp>
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#include "../mwbase/environment.hpp"
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#include "../mwbase/world.hpp"
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#include "../mwbase/mechanicsmanager.hpp"
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#include "../mwworld/class.hpp"
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#include "../mwworld/esmstore.hpp"
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#include "../mwworld/inventorystore.hpp"
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#include "../mwworld/actionequip.hpp"
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#include "../mwworld/cellstore.hpp"
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#include "npcstats.hpp"
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#include "spellcasting.hpp"
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#include "combat.hpp"
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#include "weaponpriority.hpp"
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#include "spellpriority.hpp"
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namespace MWMechanics
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{
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float suggestCombatRange(int rangeTypes)
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{
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static const float fCombatDistance = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>().find("fCombatDistance")->getFloat();
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static float fHandToHandReach = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>().find("fHandToHandReach")->getFloat();
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// This distance is a possible distance of melee attack
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static float distance = fCombatDistance * std::max(2.f, fHandToHandReach);
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if (rangeTypes & RangeTypes::Touch)
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{
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return fCombatDistance;
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}
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return distance * 4;
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}
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void ActionSpell::prepare(const MWWorld::Ptr &actor)
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{
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actor.getClass().getCreatureStats(actor).getSpells().setSelectedSpell(mSpellId);
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actor.getClass().getCreatureStats(actor).setDrawState(DrawState_Spell);
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if (actor.getClass().hasInventoryStore(actor))
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{
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MWWorld::InventoryStore& inv = actor.getClass().getInventoryStore(actor);
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inv.setSelectedEnchantItem(inv.end());
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}
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const ESM::Spell* spell = MWBase::Environment::get().getWorld()->getStore().get<ESM::Spell>().find(mSpellId);
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MWBase::Environment::get().getWorld()->preloadEffects(&spell->mEffects);
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}
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float ActionSpell::getCombatRange (bool& isRanged) const
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{
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const ESM::Spell* spell = MWBase::Environment::get().getWorld()->getStore().get<ESM::Spell>().find(mSpellId);
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int types = getRangeTypes(spell->mEffects);
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isRanged = (types & RangeTypes::Target) | (types & RangeTypes::Self);
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return suggestCombatRange(types);
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}
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void ActionEnchantedItem::prepare(const MWWorld::Ptr &actor)
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{
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actor.getClass().getCreatureStats(actor).getSpells().setSelectedSpell(std::string());
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actor.getClass().getInventoryStore(actor).setSelectedEnchantItem(mItem);
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actor.getClass().getCreatureStats(actor).setDrawState(DrawState_Spell);
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}
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float ActionEnchantedItem::getCombatRange(bool& isRanged) const
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{
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const ESM::Enchantment* enchantment = MWBase::Environment::get().getWorld()->getStore().get<ESM::Enchantment>().find(mItem->getClass().getEnchantment(*mItem));
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int types = getRangeTypes(enchantment->mEffects);
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isRanged = (types & RangeTypes::Target) | (types & RangeTypes::Self);
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return suggestCombatRange(types);
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}
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float ActionPotion::getCombatRange(bool& isRanged) const
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{
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// Distance doesn't matter since this action has no animation
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// If we want to back away slightly to avoid enemy hits, we should set isRanged to "true"
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return 600.f;
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}
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void ActionPotion::prepare(const MWWorld::Ptr &actor)
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{
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actor.getClass().apply(actor, mPotion.getCellRef().getRefId(), actor);
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actor.getClass().getContainerStore(actor).remove(mPotion, 1, actor);
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}
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void ActionWeapon::prepare(const MWWorld::Ptr &actor)
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{
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if (actor.getClass().hasInventoryStore(actor))
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{
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if (mWeapon.isEmpty())
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actor.getClass().getInventoryStore(actor).unequipSlot(MWWorld::InventoryStore::Slot_CarriedRight, actor);
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else
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{
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MWWorld::ActionEquip equip(mWeapon);
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equip.execute(actor);
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}
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if (!mAmmunition.isEmpty())
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{
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MWWorld::ActionEquip equip(mAmmunition);
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equip.execute(actor);
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}
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}
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actor.getClass().getCreatureStats(actor).setDrawState(DrawState_Weapon);
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}
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float ActionWeapon::getCombatRange(bool& isRanged) const
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{
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isRanged = false;
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static const float fCombatDistance = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>().find("fCombatDistance")->getFloat();
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static const float fProjectileMaxSpeed = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>().find("fProjectileMaxSpeed")->getFloat();
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if (mWeapon.isEmpty())
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{
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static float fHandToHandReach =
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MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>().find("fHandToHandReach")->getFloat();
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return fHandToHandReach * fCombatDistance;
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}
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const ESM::Weapon* weapon = mWeapon.get<ESM::Weapon>()->mBase;
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if (weapon->mData.mType >= ESM::Weapon::MarksmanBow)
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{
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isRanged = true;
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return fProjectileMaxSpeed;
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}
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else
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return weapon->mData.mReach * fCombatDistance;
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}
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const ESM::Weapon* ActionWeapon::getWeapon() const
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{
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if (mWeapon.isEmpty())
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return NULL;
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return mWeapon.get<ESM::Weapon>()->mBase;
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}
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std::shared_ptr<Action> prepareNextAction(const MWWorld::Ptr &actor, const MWWorld::Ptr &enemy)
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{
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Spells& spells = actor.getClass().getCreatureStats(actor).getSpells();
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float bestActionRating = 0.f;
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float antiFleeRating = 0.f;
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// Default to hand-to-hand combat
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std::shared_ptr<Action> bestAction (new ActionWeapon(MWWorld::Ptr()));
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if (actor.getClass().isNpc() && actor.getClass().getNpcStats(actor).isWerewolf())
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{
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bestAction->prepare(actor);
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return bestAction;
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}
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if (actor.getClass().hasInventoryStore(actor))
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{
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MWWorld::InventoryStore& store = actor.getClass().getInventoryStore(actor);
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for (MWWorld::ContainerStoreIterator it = store.begin(); it != store.end(); ++it)
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{
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float rating = ratePotion(*it, actor);
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if (rating > bestActionRating)
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{
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bestActionRating = rating;
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bestAction.reset(new ActionPotion(*it));
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antiFleeRating = std::numeric_limits<float>::max();
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}
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}
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for (MWWorld::ContainerStoreIterator it = store.begin(); it != store.end(); ++it)
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{
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float rating = rateMagicItem(*it, actor, enemy);
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if (rating > bestActionRating)
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{
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bestActionRating = rating;
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bestAction.reset(new ActionEnchantedItem(it));
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antiFleeRating = std::numeric_limits<float>::max();
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}
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}
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MWWorld::Ptr bestArrow;
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float bestArrowRating = rateAmmo(actor, enemy, bestArrow, ESM::Weapon::Arrow);
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MWWorld::Ptr bestBolt;
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float bestBoltRating = rateAmmo(actor, enemy, bestBolt, ESM::Weapon::Bolt);
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for (MWWorld::ContainerStoreIterator it = store.begin(); it != store.end(); ++it)
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{
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std::vector<int> equipmentSlots = it->getClass().getEquipmentSlots(*it).first;
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if (std::find(equipmentSlots.begin(), equipmentSlots.end(), (int)MWWorld::InventoryStore::Slot_CarriedRight)
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== equipmentSlots.end())
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continue;
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float rating = rateWeapon(*it, actor, enemy, -1, bestArrowRating, bestBoltRating);
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if (rating > bestActionRating)
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{
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const ESM::Weapon* weapon = it->get<ESM::Weapon>()->mBase;
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MWWorld::Ptr ammo;
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if (weapon->mData.mType == ESM::Weapon::MarksmanBow)
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ammo = bestArrow;
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else if (weapon->mData.mType == ESM::Weapon::MarksmanCrossbow)
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ammo = bestBolt;
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bestActionRating = rating;
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bestAction.reset(new ActionWeapon(*it, ammo));
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antiFleeRating = vanillaRateWeaponAndAmmo(*it, ammo, actor, enemy);
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}
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}
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}
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for (Spells::TIterator it = spells.begin(); it != spells.end(); ++it)
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{
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const ESM::Spell* spell = it->first;
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float rating = rateSpell(spell, actor, enemy);
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if (rating > bestActionRating)
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{
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bestActionRating = rating;
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bestAction.reset(new ActionSpell(spell->mId));
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antiFleeRating = vanillaRateSpell(spell, actor, enemy);
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}
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}
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if (makeFleeDecision(actor, enemy, antiFleeRating))
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bestAction.reset(new ActionFlee());
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if (bestAction.get())
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bestAction->prepare(actor);
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return bestAction;
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}
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float getBestActionRating(const MWWorld::Ptr &actor, const MWWorld::Ptr &enemy)
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{
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Spells& spells = actor.getClass().getCreatureStats(actor).getSpells();
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float bestActionRating = 0.f;
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// Default to hand-to-hand combat
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if (actor.getClass().isNpc() && actor.getClass().getNpcStats(actor).isWerewolf())
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{
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return bestActionRating;
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}
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if (actor.getClass().hasInventoryStore(actor))
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{
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MWWorld::InventoryStore& store = actor.getClass().getInventoryStore(actor);
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for (MWWorld::ContainerStoreIterator it = store.begin(); it != store.end(); ++it)
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{
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float rating = rateMagicItem(*it, actor, enemy);
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if (rating > bestActionRating)
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{
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bestActionRating = rating;
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}
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}
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float bestArrowRating = rateAmmo(actor, enemy, ESM::Weapon::Arrow);
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float bestBoltRating = rateAmmo(actor, enemy, ESM::Weapon::Bolt);
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for (MWWorld::ContainerStoreIterator it = store.begin(); it != store.end(); ++it)
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{
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std::vector<int> equipmentSlots = it->getClass().getEquipmentSlots(*it).first;
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if (std::find(equipmentSlots.begin(), equipmentSlots.end(), (int)MWWorld::InventoryStore::Slot_CarriedRight)
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== equipmentSlots.end())
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continue;
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float rating = rateWeapon(*it, actor, enemy, -1, bestArrowRating, bestBoltRating);
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if (rating > bestActionRating)
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{
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bestActionRating = rating;
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}
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}
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}
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for (Spells::TIterator it = spells.begin(); it != spells.end(); ++it)
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{
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const ESM::Spell* spell = it->first;
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float rating = rateSpell(spell, actor, enemy);
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if (rating > bestActionRating)
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{
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bestActionRating = rating;
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}
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}
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return bestActionRating;
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}
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float getDistanceMinusHalfExtents(const MWWorld::Ptr& actor1, const MWWorld::Ptr& actor2, bool minusZDist)
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{
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osg::Vec3f actor1Pos = actor1.getRefData().getPosition().asVec3();
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osg::Vec3f actor2Pos = actor2.getRefData().getPosition().asVec3();
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float dist = (actor1Pos - actor2Pos).length();
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if (minusZDist)
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dist -= std::abs(actor1Pos.z() - actor2Pos.z());
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return (dist
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- MWBase::Environment::get().getWorld()->getHalfExtents(actor1).y()
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- MWBase::Environment::get().getWorld()->getHalfExtents(actor2).y());
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}
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float getMaxAttackDistance(const MWWorld::Ptr& actor)
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{
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const CreatureStats& stats = actor.getClass().getCreatureStats(actor);
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const MWWorld::Store<ESM::GameSetting>& gmst = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>();
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std::string selectedSpellId = stats.getSpells().getSelectedSpell();
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MWWorld::Ptr selectedEnchItem;
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MWWorld::Ptr activeWeapon, activeAmmo;
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if (actor.getClass().hasInventoryStore(actor))
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{
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MWWorld::InventoryStore& invStore = actor.getClass().getInventoryStore(actor);
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MWWorld::ContainerStoreIterator item = invStore.getSlot(MWWorld::InventoryStore::Slot_CarriedRight);
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if (item != invStore.end() && item.getType() == MWWorld::ContainerStore::Type_Weapon)
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activeWeapon = *item;
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item = invStore.getSlot(MWWorld::InventoryStore::Slot_Ammunition);
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if (item != invStore.end() && item.getType() == MWWorld::ContainerStore::Type_Weapon)
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activeAmmo = *item;
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if (invStore.getSelectedEnchantItem() != invStore.end())
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selectedEnchItem = *invStore.getSelectedEnchantItem();
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}
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float dist = 1.0f;
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if (activeWeapon.isEmpty() && !selectedSpellId.empty() && !selectedEnchItem.isEmpty())
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{
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static const float fHandToHandReach = gmst.find("fHandToHandReach")->getFloat();
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dist = fHandToHandReach;
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}
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else if (stats.getDrawState() == MWMechanics::DrawState_Spell)
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{
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dist = 1.0f;
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if (!selectedSpellId.empty())
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{
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const ESM::Spell* spell = MWBase::Environment::get().getWorld()->getStore().get<ESM::Spell>().find(selectedSpellId);
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for (std::vector<ESM::ENAMstruct>::const_iterator effectIt =
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spell->mEffects.mList.begin(); effectIt != spell->mEffects.mList.end(); ++effectIt)
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{
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if (effectIt->mRange == ESM::RT_Target)
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{
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const ESM::MagicEffect* effect = MWBase::Environment::get().getWorld()->getStore().get<ESM::MagicEffect>().find(effectIt->mEffectID);
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dist = effect->mData.mSpeed;
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break;
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}
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}
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}
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else if (!selectedEnchItem.isEmpty())
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{
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std::string enchId = selectedEnchItem.getClass().getEnchantment(selectedEnchItem);
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if (!enchId.empty())
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{
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const ESM::Enchantment* ench = MWBase::Environment::get().getWorld()->getStore().get<ESM::Enchantment>().find(enchId);
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for (std::vector<ESM::ENAMstruct>::const_iterator effectIt =
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ench->mEffects.mList.begin(); effectIt != ench->mEffects.mList.end(); ++effectIt)
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{
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if (effectIt->mRange == ESM::RT_Target)
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{
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const ESM::MagicEffect* effect = MWBase::Environment::get().getWorld()->getStore().get<ESM::MagicEffect>().find(effectIt->mEffectID);
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dist = effect->mData.mSpeed;
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break;
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}
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}
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}
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}
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static const float fTargetSpellMaxSpeed = gmst.find("fTargetSpellMaxSpeed")->getFloat();
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dist *= std::max(1000.0f, fTargetSpellMaxSpeed);
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}
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else if (!activeWeapon.isEmpty())
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{
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const ESM::Weapon* esmWeap = activeWeapon.get<ESM::Weapon>()->mBase;
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if (esmWeap->mData.mType >= ESM::Weapon::MarksmanBow)
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{
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static const float fTargetSpellMaxSpeed = gmst.find("fProjectileMaxSpeed")->getFloat();
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dist = fTargetSpellMaxSpeed;
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if (!activeAmmo.isEmpty())
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{
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const ESM::Weapon* esmAmmo = activeAmmo.get<ESM::Weapon>()->mBase;
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dist *= esmAmmo->mData.mSpeed;
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}
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}
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else if (esmWeap->mData.mReach > 1)
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{
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dist = esmWeap->mData.mReach;
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}
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}
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dist = (dist > 0.f) ? dist : 1.0f;
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static const float fCombatDistance = gmst.find("fCombatDistance")->getFloat();
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static const float fCombatDistanceWerewolfMod = gmst.find("fCombatDistanceWerewolfMod")->getFloat();
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float combatDistance = fCombatDistance;
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if (actor.getClass().isNpc() && actor.getClass().getNpcStats(actor).isWerewolf())
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combatDistance *= (fCombatDistanceWerewolfMod + 1.0f);
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if (dist < combatDistance)
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dist *= combatDistance;
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return dist;
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}
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bool canFight(const MWWorld::Ptr& actor, const MWWorld::Ptr& enemy)
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{
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ESM::Position actorPos = actor.getRefData().getPosition();
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ESM::Position enemyPos = enemy.getRefData().getPosition();
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const CreatureStats& enemyStats = enemy.getClass().getCreatureStats(enemy);
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if (enemyStats.getMagicEffects().get(ESM::MagicEffect::Invisibility).getMagnitude() > 0
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|| enemyStats.getMagicEffects().get(ESM::MagicEffect::Chameleon).getMagnitude() > 0)
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{
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if (!MWBase::Environment::get().getMechanicsManager()->awarenessCheck(enemy, actor))
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return false;
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}
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if (actor.getClass().isPureWaterCreature(actor))
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{
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if (!MWBase::Environment::get().getWorld()->isWading(enemy))
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return false;
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}
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float atDist = getMaxAttackDistance(actor);
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if (atDist > getDistanceMinusHalfExtents(actor, enemy)
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&& atDist > std::abs(actorPos.pos[2] - enemyPos.pos[2]))
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{
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if (MWBase::Environment::get().getWorld()->getLOS(actor, enemy))
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return true;
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}
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if (actor.getClass().isPureFlyingCreature(actor) || actor.getClass().isPureLandCreature(actor))
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{
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if (MWBase::Environment::get().getWorld()->isSwimming(enemy))
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return false;
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}
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if (actor.getClass().isBipedal(actor) || !actor.getClass().canFly(actor))
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{
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if (enemy.getClass().getCreatureStats(enemy).getMagicEffects().get(ESM::MagicEffect::Levitate).getMagnitude() > 0)
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{
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float attackDistance = getMaxAttackDistance(actor);
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if ((attackDistance + actorPos.pos[2]) < enemyPos.pos[2])
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{
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if (enemy.getCell()->isExterior())
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{
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if (attackDistance < (enemyPos.pos[2] - MWBase::Environment::get().getWorld()->getTerrainHeightAt(enemyPos.asVec3())))
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return false;
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}
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}
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}
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}
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if (!actor.getClass().canWalk(actor) && !actor.getClass().isBipedal(actor))
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return true;
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if (actor.getClass().getCreatureStats(actor).getMagicEffects().get(ESM::MagicEffect::Levitate).getMagnitude() > 0)
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return true;
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if (MWBase::Environment::get().getWorld()->isSwimming(actor))
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|
return true;
|
|
|
|
if (getDistanceMinusHalfExtents(actor, enemy, true) <= 0.0f)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
float vanillaRateFlee(const MWWorld::Ptr& actor, const MWWorld::Ptr& enemy)
|
|
{
|
|
const CreatureStats& stats = actor.getClass().getCreatureStats(actor);
|
|
const MWWorld::Store<ESM::GameSetting>& gmst = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>();
|
|
|
|
int flee = stats.getAiSetting(CreatureStats::AI_Flee).getModified();
|
|
if (flee >= 100)
|
|
return flee;
|
|
|
|
static const float fAIFleeHealthMult = gmst.find("fAIFleeHealthMult")->getFloat();
|
|
static const float fAIFleeFleeMult = gmst.find("fAIFleeFleeMult")->getFloat();
|
|
|
|
float healthPercentage = (stats.getHealth().getModified() == 0.0f)
|
|
? 1.0f : stats.getHealth().getCurrent() / stats.getHealth().getModified();
|
|
float rating = (1.0f - healthPercentage) * fAIFleeHealthMult + flee * fAIFleeFleeMult;
|
|
|
|
static const int iWereWolfLevelToAttack = gmst.find("iWereWolfLevelToAttack")->getInt();
|
|
|
|
if (actor.getClass().isNpc() && enemy.getClass().isNpc())
|
|
{
|
|
if (enemy.getClass().getNpcStats(enemy).isWerewolf() && stats.getLevel() < iWereWolfLevelToAttack)
|
|
{
|
|
static const int iWereWolfFleeMod = gmst.find("iWereWolfFleeMod")->getInt();
|
|
rating = iWereWolfFleeMod;
|
|
}
|
|
}
|
|
|
|
if (rating != 0.0f)
|
|
rating += getFightDistanceBias(actor, enemy);
|
|
|
|
return rating;
|
|
}
|
|
|
|
bool makeFleeDecision(const MWWorld::Ptr& actor, const MWWorld::Ptr& enemy, float antiFleeRating)
|
|
{
|
|
float fleeRating = vanillaRateFlee(actor, enemy);
|
|
if (fleeRating < 100.0f)
|
|
fleeRating = 0.0f;
|
|
|
|
if (fleeRating > antiFleeRating)
|
|
return true;
|
|
|
|
// Run away after summoning a creature if we have nothing to use but fists.
|
|
if (antiFleeRating == 0.0f && !actor.getClass().getCreatureStats(actor).getSummonedCreatureMap().empty())
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
}
|