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/*
* The Mana Server
* Copyright (C) 2010 The Mana Development Team
*
* 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/>.
*/
#ifndef ATTACK_H
#define ATTACK_H
#include <cstddef>
#include <list>
#include <sigc++/signal.h>
#include <sigc++/trackable.h>
#include "common/defines.h"
#include "scripting/script.h"
#include "utils/xml.h"
#include "game-server/timeout.h"
/**
* Structure that describes the severity and nature of an attack a being can
* be hit by.
*/
struct Damage
{
unsigned id; /**< Id of the attack (needed for displaying animation clientside */
unsigned skill; /**< Skill used by source (needed for exp calculation) */
unsigned short base; /**< Base amount of damage. */
unsigned short delta; /**< Additional damage when lucky. */
unsigned short cth; /**< Chance to hit. Opposes the evade attribute. */
Element element; /**< Elemental damage. */
DamageType type; /**< Damage type: Physical or magical? */
bool trueStrike; /**< Override dodge calculation */
unsigned short range; /**< Maximum distance that this attack can be used from, in pixels */
Damage():
id(0),
skill(0),
base(0),
delta(0),
cth(0),
element(ELEMENT_NEUTRAL),
type(DAMAGE_OTHER),
trueStrike(false),
range(DEFAULT_TILE_LENGTH)
{}
};
/**
* Class that stores information about an auto-attack
*/
class Character;
struct AttackInfo
{
public:
AttackInfo(unsigned priority, const Damage &damage,
unsigned short warmupTime, unsigned short cooldownTime,
unsigned short reuseTime):
mDamage(damage),
mCooldownTime(cooldownTime),
mWarmupTime(warmupTime),
mReuseTime(reuseTime),
mPriority(priority)
{}
unsigned short getWarmupTime() const
{ return mWarmupTime; }
unsigned short getCooldownTime() const
{ return mCooldownTime; }
unsigned short getReuseTime() const
{ return mReuseTime; }
static AttackInfo *readAttackNode(xmlNodePtr node);
Damage &getDamage()
{ return mDamage; }
const Script::Ref &getScriptCallback() const
{ return mCallback; }
void setCallback(Script *script)
{ script->assignCallback(mCallback); }
unsigned getPriority() const
{ return mPriority; }
private:
Damage mDamage;
/**
* Value to reset the timer to (warmup + cooldown)
*/
unsigned short mCooldownTime;
/**
* Pre-attack delay tick.
* This MUST be smaller than or equal to the aspd!
* So the attack triggers where timer == warmup, having gone through
* aspd - warmup ticks.
*/
unsigned short mWarmupTime;
/**
* The global cooldown that needs to be finished before the being can
* use the next attack.
*/
unsigned short mReuseTime;
/**
* Name of the script callback
*/
Script::Ref mCallback;
/**
* Priority of the attack
*/
unsigned mPriority;
};
class Attack
{
public:
Attack(AttackInfo *info):
mInfo(info)
{}
AttackInfo *getAttackInfo()
{ return mInfo; }
void markAsTriggered()
{ mReuseTimer.set(mInfo->getCooldownTime() + mInfo->getReuseTime()); }
bool isUsuable() const
{ return mReuseTimer.expired(); }
private:
/**
* Contains infos about cooldown/damage/etc
*/
AttackInfo *mInfo;
/**
* Internal timer that checks time for reuse
*/
Timeout mReuseTimer;
};
/**
* Helper class for storing multiple auto-attacks.
*/
class Attacks : public sigc::trackable
{
public:
Attacks():
mCurrentAttack(0)
{}
void add(AttackInfo *);
void remove(AttackInfo *);
void markAttackAsTriggered();
Attack *getTriggerableAttack();
void startAttack(Attack *attack);
void getUsuableAttacks(std::vector<Attack *> *ret);
/**
* Tells the number of attacks available
*/
unsigned getNumber()
{ return mAttacks.size(); }
sigc::signal<void, Attack &> attack_added;
sigc::signal<void, Attack &> attack_removed;
private:
std::vector<Attack> mAttacks;
Attack *mCurrentAttack;
/**
* when greater than cooldown -> warming up
* when equals cooldown -> trigger attack
* when smaller -> cooling down
*/
Timeout mAttackTimer;
};
#endif // ATTACK_H
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