/*
* The Mana World Server
* Copyright 2004 The Mana World Development Team
*
* This file is part of The Mana World.
*
* The Mana World 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 World 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 World; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id$
*/
#include "game-server/monster.hpp"
#include "game-server/character.hpp"
#include "game-server/item.hpp"
#include "game-server/mapcomposite.hpp"
#include "game-server/state.hpp"
#include "utils/logger.h"
ItemClass *MonsterClass::getRandomDrop() const
{
int p = rand() / (RAND_MAX / 10000);
for (MonsterDrops::const_iterator i = mDrops.begin(),
i_end = mDrops.end(); i != i_end; ++i)
{
p -= i->probability;
if (p < 0)
{
return i->item;
}
}
return NULL;
}
struct MonsterTargetEventDispatch: EventDispatch
{
MonsterTargetEventDispatch()
{
typedef EventListenerFactory< Monster, &Monster::mTargetListener > Factory;
removed = &Factory::create< Thing, &Monster::forgetTarget >::function;
died = &Factory::create< Thing, &Monster::forgetTarget, Being >::function;
}
};
static MonsterTargetEventDispatch monsterTargetEventDispatch;
Monster::Monster(MonsterClass *specy):
Being(OBJECT_MONSTER, 65535),
mSpecy(specy),
mCountDown(0),
mTargetListener(&monsterTargetEventDispatch),
mOwner(NULL),
mOwnerTimer(0),
mAttackTime(0)
{
LOG_DEBUG("Monster spawned!");
// Some bogus stats for testing.
// TODO: Get all this stuff from the monster database.
mAgressive = false;
mAgressionRange = 10;
mAttackPreDelay = 10;
mAttackAftDelay = 10;
mAttackRange = 32;
mAttackAngle = 10;
setSpeed(300);
setSize(8);
setAttribute(BASE_ATTR_HP, 100);
setAttribute(BASE_ATTR_PHY_ATK_MIN, 20);
setAttribute(BASE_ATTR_PHY_ATK_DELTA, 2);
setAttribute(BASE_ATTR_HIT, 10);
setAttribute(BASE_ATTR_EVADE, 10);
mExpReward = 100;
// Set positions relative to target from which the monster can attack
mAttackPositions.push_back(AttackPosition(+32, 0, DIRECTION_LEFT));
mAttackPositions.push_back(AttackPosition(-32, 0, DIRECTION_RIGHT));
mAttackPositions.push_back(AttackPosition(0, +32, DIRECTION_DOWN));
mAttackPositions.push_back(AttackPosition(0, -32, DIRECTION_UP));
}
Monster::~Monster()
{
// Remove death listeners.
for (std::map<Being *, int>::iterator i = mAnger.begin(),
i_end = mAnger.end(); i != i_end; ++i)
{
i->first->removeListener(&mTargetListener);
}
}
void Monster::perform()
{
if (mAction == ATTACK)
{
if (mAttackTime == mAttackAftDelay)
{
// Hard-coded values for now.
Damage damage;
damage.base = getModifiedAttribute(BASE_ATTR_PHY_ATK_MIN);
damage.delta = getModifiedAttribute(BASE_ATTR_PHY_ATK_DELTA);
damage.cth = getModifiedAttribute(BASE_ATTR_HIT);
damage.element = ELEMENT_NEUTRAL;
damage.type = DAMAGE_PHYSICAL;
damage.usedSkill = 0;
performAttack(damage, mAttackRange, mAttackAngle);
}
if (!mAttackTime)
{
setAction(STAND);
}
}
}
void Monster::update()
{
Being::update();
if (mOwner && mOwnerTimer)
{
mOwnerTimer--;
} else {
mOwner = NULL;
}
// If dead do nothing but rot
if (mAction == DEAD)
{
mCountDown--;
if (mCountDown <= 0)
{
GameState::enqueueRemove(this);
}
return;
}
if (mAction == ATTACK)
{
mAttackTime--;
return;
}
// Check potential attack positions
Being *bestAttackTarget = NULL;
int bestTargetPriority = 0;
Point bestAttackPosition;
Direction bestAttackDirection = DIRECTION_DOWN;
// Iterate through objects nearby
for (MovingObjectIterator i(getMap()->getAroundCharacterIterator(this, AROUND_AREA)); i; ++i)
{
// We only want to attack player characters
if ((*i)->getType() != OBJECT_CHARACTER) continue;
Being *target = static_cast<Being *> (*i);
// Dead characters are ignored
if (target->getAction() == DEAD) continue;
// Determine how much we hate the target
int targetPriority = 0;
std::map<Being *, int, std::greater<Being *> >::iterator angerIterator;
angerIterator = mAnger.find(target);
if (angerIterator != mAnger.end())
{
targetPriority = angerIterator->second;
}
else if (mAgressive)
{
targetPriority = 1;
}
else
{
continue;
}
// Check all attack positions
for (std::list<AttackPosition>::iterator j = mAttackPositions.begin();
j != mAttackPositions.end();
j++)
{
Point attackPosition = (*i)->getPosition();
attackPosition.x += (*j).x;
attackPosition.y += (*j).y;
int posPriority = calculatePositionPriority(attackPosition,
targetPriority);
if (posPriority > bestTargetPriority)
{
bestAttackTarget = target;
bestTargetPriority = posPriority;
bestAttackPosition = attackPosition;
bestAttackDirection = (*j).direction;
}
}
}
// Check if an attack position has been found
if (bestAttackTarget)
{
// Check if we are there
if (bestAttackPosition == getPosition())
{
// We are there - let's beat the crap out of the target
setDirection(bestAttackDirection);
setAction(ATTACK);
raiseUpdateFlags(UPDATEFLAG_ATTACK);
mAttackTime = mAttackPreDelay + mAttackAftDelay;
}
else
{
// We aren't there yet - let's move
setDestination(bestAttackPosition);
}
}
else
{
// We have no target - let's wander around
mCountDown--;
if (mCountDown <= 0)
{
Point randomPos(rand() % 160 - 80 + getPosition().x,
rand() % 160 - 80 + getPosition().y);
setDestination(randomPos);
mCountDown = 10 + rand() % 10;
}
}
}
int Monster::calculatePositionPriority(Point position, int targetPriority)
{
Point thisPos = getPosition();
// Check if we already are on this position
if (thisPos.x / 32 == position.x / 32 &&
thisPos.y / 32 == position.y / 32)
{
return targetPriority *= mAgressionRange;
}
std::list<PATH_NODE> path;
path = getMap()->getMap()->findPath(thisPos.x / 32, thisPos.y / 32,
position.x / 32, position.y / 32,
mAgressionRange);
if (path.empty() || path.size() >= mAgressionRange)
{
return 0;
}
else
{
return targetPriority * (mAgressionRange - path.size());
}
}
void Monster::forgetTarget(Thing *t)
{
Being *b = static_cast< Being * >(t);
mAnger.erase(b);
b->removeListener(&mTargetListener);
if (b->getType() == OBJECT_CHARACTER)
{
Character *c = static_cast< Character * >(b);
mExpReceivers.erase(c);
mLegalExpReceivers.erase(c);
}
}
int Monster::damage(Object *source, Damage const &damage)
{
int HPLoss = Being::damage(source, damage);
if (HPLoss && source && source->getType() == OBJECT_CHARACTER)
{
Character *s = static_cast< Character * >(source);
std::pair< std::map< Being *, int >::iterator, bool > ib =
mAnger.insert(std::make_pair(s, HPLoss));
if (ib.second)
{
s->addListener(&mTargetListener);
}
else
{
ib.first->second += HPLoss;
}
if (damage.usedSkill)
{
mExpReceivers[s].insert(damage.usedSkill);
if (!mOwnerTimer || mOwner == s /*TODO: || mOwner->getParty() == s->getParty() */)
{
mOwner = s;
mLegalExpReceivers.insert(s);
mOwnerTimer = KILLSTEAL_PROTECTION_TIME;
}
}
}
return HPLoss;
}
void Monster::died()
{
Being::died();
mCountDown = 50; // Sets remove time to 5 seconds
//drop item
if (ItemClass *drop = mSpecy->getRandomDrop())
{
Item *item = new Item(drop, 1);
item->setMap(getMap());
item->setPosition(getPosition());
GameState::enqueueInsert(item);
}
//distribute exp reward
if (mExpReceivers.size() > 0)
{
std::map<Character *, std::set <size_t> > ::iterator iChar;
std::set<size_t>::iterator iSkill;
float expPerChar = mExpReward / mExpReceivers.size();
for (iChar = mExpReceivers.begin(); iChar != mExpReceivers.end(); iChar++)
{
Character *character = (*iChar).first;
std::set<size_t> *skillSet = &(*iChar).second;
if (mLegalExpReceivers.find(character) == mLegalExpReceivers.end()
|| skillSet->size() < 1)
{
continue;
}
int expPerSkill = int(expPerChar / skillSet->size());
for (iSkill = skillSet->begin(); iSkill != skillSet->end(); iSkill++)
{
character->receiveExperience(*iSkill, expPerSkill);
}
}
}
}