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#include "stdafx.h"
#include "net.minecraft.world.entity.ai.navigation.h"
#include "net.minecraft.world.entity.ai.sensing.h"
#include "net.minecraft.world.entity.h"
#include "net.minecraft.world.entity.animal.h"
#include "net.minecraft.world.entity.player.h"
#include "net.minecraft.world.level.pathfinder.h"
#include "net.minecraft.world.phys.h"
#include "TargetGoal.h"
void TargetGoal::_init(Mob *mob, float within, bool mustSee, bool mustReach)
{
reachCache = EmptyReachCache;
reachCacheTime = 0;
unseenTicks = 0;
this->mob = mob;
this->within = within;
this->mustSee = mustSee;
this->mustReach = mustReach;
}
TargetGoal::TargetGoal(Mob *mob, float within, bool mustSee)
{
_init(mob, within, mustSee, false);
}
TargetGoal::TargetGoal(Mob *mob, float within, bool mustSee, bool mustReach)
{
_init(mob,within,mustSee,mustReach);
}
bool TargetGoal::canContinueToUse()
{
shared_ptr<Mob> target = mob->getTarget();
if (target == NULL) return false;
if (!target->isAlive()) return false;
if (mob->distanceToSqr(target) > within * within) return false;
if (mustSee)
{
if (mob->getSensing()->canSee(target))
{
unseenTicks = 0;
}
else
{
if (++unseenTicks > UnseenMemoryTicks) return false;
}
}
return true;
}
void TargetGoal::start()
{
reachCache = EmptyReachCache;
reachCacheTime = 0;
unseenTicks = 0;
}
void TargetGoal::stop()
{
mob->setTarget(nullptr);
}
bool TargetGoal::canAttack(shared_ptr<Mob> target, bool allowInvulnerable)
{
if (target == NULL) return false;
if (target == mob->shared_from_this()) return false;
if (!target->isAlive()) return false;
if (!mob->canAttackType(target->GetType())) return false;
shared_ptr<TamableAnimal> tamableAnimal = dynamic_pointer_cast<TamableAnimal>(mob->shared_from_this());
if (tamableAnimal != NULL && tamableAnimal->isTame())
{
shared_ptr<TamableAnimal> tamableTarget = dynamic_pointer_cast<TamableAnimal>(target);
if (tamableTarget != NULL && tamableTarget->isTame()) return false;
if (target == tamableAnimal->getOwner()) return false;
}
else if (dynamic_pointer_cast<Player>(target) != NULL)
{
if (!allowInvulnerable && (dynamic_pointer_cast<Player>(target))->abilities.invulnerable) return false;
}
if (!mob->isWithinRestriction(Mth::floor(target->x), Mth::floor(target->y), Mth::floor(target->z))) return false;
if (mustSee && !mob->getSensing()->canSee(target)) return false;
if (mustReach)
{
if (--reachCacheTime <= 0) reachCache = EmptyReachCache;
if (reachCache == EmptyReachCache) reachCache = canReach(target) ? CanReachCache : CantReachCache;
if (reachCache == CantReachCache) return false;
}
return true;
}
bool TargetGoal::canReach(shared_ptr<Mob> target)
{
reachCacheTime = 10 + mob->getRandom()->nextInt(5);
Path *path = mob->getNavigation()->createPath(target);
if (path == NULL) return false;
Node *last = path->last();
if (last == NULL)
{
delete path;
return false;
}
int xx = last->x - Mth::floor(target->x);
int zz = last->z - Mth::floor(target->z);
delete path;
return xx * xx + zz * zz <= 1.5 * 1.5;
}
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