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/*
* The Mana Server
* Copyright (C) 2013 The Mana Developers
*
* This file is part of The Mana Server.
*
* The Mana Server is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* The Mana Server is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with The Mana Server. If not, see <http://www.gnu.org/licenses/>.
*/
#include "combatcomponent.h"
#include "game-server/being.h"
#include "game-server/mapcomposite.h"
#include "utils/logger.h"
CombatComponent::CombatComponent(Entity &being):
mTarget(nullptr),
mCurrentAttack(nullptr)
{
being.getComponent<BeingComponent>()->signal_died.connect(sigc::mem_fun(
this, &CombatComponent::diedOrRemoved));
being.signal_removed.connect(sigc::mem_fun(this,
&CombatComponent::diedOrRemoved));
}
CombatComponent::~CombatComponent()
{
}
void CombatComponent::update(Entity &entity)
{
auto *beingComponent = entity.getComponent<BeingComponent>();
if (beingComponent->getAction() != ATTACK || !mTarget)
return;
std::vector<Attack *> attacksReady;
mAttacks.getUsuableAttacks(&attacksReady);
if (Attack *triggerableAttack = mAttacks.getTriggerableAttack())
{
processAttack(entity, *triggerableAttack);
mAttacks.markAttackAsTriggered();
}
// Deal with the ATTACK action.
if (attacksReady.empty())
return;
Attack *highestPriorityAttack = 0;
// Performs all ready attacks.
for (std::vector<Attack *>::const_iterator it = attacksReady.begin(),
it_end = attacksReady.end(); it != it_end; ++it)
{
const Point &attackerPosition =
entity.getComponent<ActorComponent>()->getPosition();
const Point &targetPosition =
mTarget->getComponent<ActorComponent>()->getPosition();
// check if target is in range using the pythagorean theorem
int distx = attackerPosition.x - targetPosition.x;
int disty = attackerPosition.y - targetPosition.y;
int distSquare = (distx * distx + disty * disty);
AttackInfo *info = (*it)->getAttackInfo();
int maxDist = info->getDamage().range +
entity.getComponent<ActorComponent>()->getSize();
if (distSquare <= maxDist * maxDist &&
(!highestPriorityAttack ||
highestPriorityAttack->getAttackInfo()->getPriority()
< info->getPriority()))
{
highestPriorityAttack = *it;
}
}
if (highestPriorityAttack)
{
mAttacks.startAttack(highestPriorityAttack);
mCurrentAttack = highestPriorityAttack;
const Point &point =
entity.getComponent<ActorComponent>()->getPosition();
beingComponent->setDestination(entity, point);
// TODO: Turn into direction of enemy
entity.getComponent<ActorComponent>()->raiseUpdateFlags(
UPDATEFLAG_ATTACK);
}
}
/**
* Takes a damage structure, computes the real damage based on the
* stats, deducts the result from the hitpoints and adds the result to
* the HitsTaken list.
*/
int CombatComponent::damage(Entity &target,
Entity *source,
const Damage &damage)
{
auto *beingComponent = target.getComponent<BeingComponent>();
int HPloss = damage.base;
if (damage.delta)
HPloss += rand() * (damage.delta + 1) / RAND_MAX;
// TODO magical attacks and associated elemental modifiers
switch (damage.type)
{
case DAMAGE_PHYSICAL:
{
const double dodge =
beingComponent->getModifiedAttribute(ATTR_DODGE);
if (!damage.trueStrike && rand()%((int)dodge + 1) >
rand()%(damage.cth + 1))
{
HPloss = 0;
// TODO Process triggers for a dodged physical attack here.
// If there is an attacker included, also process triggers for the attacker (failed physical strike)
}
else
{
const double defense =
beingComponent->getModifiedAttribute(ATTR_DEFENSE);
HPloss = HPloss * (1.0 - (0.0159375f * defense) /
(1.0 + 0.017 * defense)) +
(rand()%((HPloss / 16) + 1));
// TODO Process triggers for receiving damage here.
// If there is an attacker included, also process triggers for the attacker (successful physical strike)
}
break;
}
case DAMAGE_MAGICAL:
#if 0
beingComponent.getModifiedAttribute(BASE_ELEM_BEGIN + damage.element);
#else
LOG_WARN("Attempt to use magical type damage! This has not been"
"implemented yet and should not be used!");
HPloss = 0;
#endif
break;
case DAMAGE_DIRECT:
break;
default:
LOG_WARN("Unknown damage type '" << damage.type << "'!");
break;
}
if (HPloss > 0)
{
mHitsTaken.push_back(HPloss);
const Attribute *HP = beingComponent->getAttribute(ATTR_HP);
LOG_DEBUG("Being "
<< target.getComponent<ActorComponent>()->getPublicID()
<< " suffered " << HPloss
<< " damage. HP: "
<< HP->getModifiedAttribute() << "/"
<< beingComponent->getModifiedAttribute(ATTR_MAX_HP));
beingComponent->setAttribute(target, ATTR_HP, HP->getBase() - HPloss);
// No HP regen after being hit if this is set.
// TODO: Reenable this once the attributes are available as a component
// A bit too fuzzy to implement at the moment
//mHealthRegenerationTimeout.setSoft(
// Configuration::getValue("game_hpRegenBreakAfterHit", 0));
}
else
{
HPloss = 0;
}
signal_damaged.emit(source, damage, HPloss);
return HPloss;
}
/**
* Performs an attack
*/
void CombatComponent::processAttack(Entity &source, Attack &attack)
{
performAttack(source, attack.getAttackInfo()->getDamage());
}
/**
* Adds an attack to the available attacks
*/
void CombatComponent::addAttack(AttackInfo *attackInfo)
{
mAttacks.add(this, attackInfo);
}
/**
* Removes an attack from the available attacks
*/
void CombatComponent::removeAttack(AttackInfo *attackInfo)
{
mAttacks.remove(this, attackInfo);
}
/**
* Performs an attack.
*/
int CombatComponent::performAttack(Entity &source, const Damage &dmg)
{
// check target legality
if (!mTarget
|| mTarget == &source
|| mTarget->getComponent<BeingComponent>()->getAction() == DEAD
|| !mTarget->canFight())
return -1;
if (source.getMap()->getPvP() == PVP_NONE
&& mTarget->getType() == OBJECT_CHARACTER
&& source.getType() == OBJECT_CHARACTER)
return -1;
return mTarget->getComponent<CombatComponent>()->damage(*mTarget,
&source, dmg);
}
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