SpellTargetSelector Struct Reference

#include "UnitAI.h"

Inheritance diagram for SpellTargetSelector:

Public Member Functions
	SpellTargetSelector (Unit *caster, uint32 spellId)
bool	operator() (Unit const *target) const

Private Attributes
Unit const *	_caster
SpellInfo const *	_spellInfo

Additional Inherited Members
Public Types inherited from Acore::unary_function< Unit *, bool >
typedef Unit *	argument_type
typedef bool	result_type

Detailed Description

Todo:

: Add more checks from Spell::CheckCast

Constructor & Destructor Documentation

SpellTargetSelector()

SpellTargetSelector::SpellTargetSelector	(	Unit *	caster,
		uint32	spellId
	)

                                                                     :
    _caster(caster), _spellInfo(sSpellMgr->GetSpellForDifficultyFromSpell(sSpellMgr->GetSpellInfo(spellId), caster))
{
    ASSERT(_spellInfo);
}

References _spellInfo, and ASSERT.

Member Function Documentation

operator()()

bool SpellTargetSelector::operator()

(

Unit const *

target

)

const

{
    if (!target)
        return false;
 
    if (_spellInfo->CheckTarget(_caster, target) != SPELL_CAST_OK)
        return false;
 
    // copypasta from Spell::CheckRange
    uint32 range_type = _spellInfo->RangeEntry ? _spellInfo->RangeEntry->Flags : 0;
    float max_range = _caster->GetSpellMaxRangeForTarget(target, _spellInfo);
    float min_range = _caster->GetSpellMinRangeForTarget(target, _spellInfo);
 
    if (target && target != _caster)
    {
        if (range_type == SPELL_RANGE_MELEE)
        {
            // Because of lag, we can not check too strictly here.
            if (!_caster->IsWithinMeleeRange(target, max_range))
                return false;
        }
        else if (!_caster->IsWithinCombatRange(target, max_range))
            return false;
 
        if (range_type == SPELL_RANGE_RANGED)
        {
            if (_caster->IsWithinMeleeRange(target))
                return false;
        }
        else if (min_range && _caster->IsWithinCombatRange(target, min_range)) // skip this check if min_range = 0
            return false;
    }
 
    return true;
}

References _caster, _spellInfo, SpellInfo::CheckTarget(), SpellRangeEntry::Flags, Unit::GetSpellMaxRangeForTarget(), Unit::GetSpellMinRangeForTarget(), Unit::IsWithinCombatRange(), Unit::IsWithinMeleeRange(), SpellInfo::RangeEntry, SPELL_CAST_OK, SPELL_RANGE_MELEE, and SPELL_RANGE_RANGED.

Member Data Documentation

_caster

Unit const* SpellTargetSelector::_caster

private

Referenced by operator()().

_spellInfo

SpellInfo const* SpellTargetSelector::_spellInfo

private

Referenced by operator()(), and SpellTargetSelector().