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#include "stdafx.h"
#include "net.minecraft.world.entity.h"
#include "net.minecraft.world.level.h"
#include "net.minecraft.world.phys.h"
#include "NearestAttackableTargetGoal.h"
NearestAttackableTargetGoal::DistComp::DistComp(Entity *source)
{
this->source = source;
}
bool NearestAttackableTargetGoal::DistComp::operator() (std::shared_ptr<Entity> e1, std::shared_ptr<Entity> e2)
{
// Should return true if e1 comes before e2 in the sorted list
double distSqr1 = source->distanceToSqr(e1);
double distSqr2 = source->distanceToSqr(e2);
if (distSqr1 < distSqr2) return true;
if (distSqr1 > distSqr2) return false;
return true;
}
NearestAttackableTargetGoal::NearestAttackableTargetGoal(Mob *mob, const type_info& targetType, float within, int randomInterval, bool mustSee, bool mustReach /*= false*/) : TargetGoal(mob, within, mustSee, mustReach), targetType(targetType)
{
//this->targetType = targetType;
this->within = within;
this->randomInterval = randomInterval;
this->distComp = new DistComp(mob);
setRequiredControlFlags(TargetGoal::TargetFlag);
}
NearestAttackableTargetGoal::~NearestAttackableTargetGoal()
{
delete distComp;
}
bool NearestAttackableTargetGoal::canUse()
{
if (randomInterval > 0 && mob->getRandom()->nextInt(randomInterval) != 0) return false;
if (targetType == typeid(Player))
{
std::shared_ptr<Mob> potentialTarget = mob->level->getNearestAttackablePlayer(mob->shared_from_this(), within);
if (canAttack(potentialTarget, false))
{
target = weak_ptr<Mob>(potentialTarget);
return true;
}
}
else
{
vector<std::shared_ptr<Entity> > *entities = mob->level->getEntitiesOfClass(targetType, mob->bb->grow(within, 4, within));
//Collections.sort(entities, distComp);
std::sort(entities->begin(), entities->end(), *distComp);
for(AUTO_VAR(it, entities->begin()); it != entities->end(); ++it)
{
std::shared_ptr<Mob> potTarget = dynamic_pointer_cast<Mob>(*it);
if (canAttack(potTarget, false))
{
target = weak_ptr<Mob>(potTarget);
return true;
}
}
delete entities;
}
return false;
}
void NearestAttackableTargetGoal::start()
{
mob->setTarget(target.lock());
TargetGoal::start();
}
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