first commit

Minecraft.World/MeleeAttackGoal.cpp

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+#include "stdafx.h"
+#include "net.minecraft.world.entity.h"
+#include "net.minecraft.world.entity.monster.h"
+#include "net.minecraft.world.level.h"
+#include "net.minecraft.world.entity.ai.control.h"
+#include "net.minecraft.world.entity.ai.navigation.h"
+#include "net.minecraft.world.entity.ai.sensing.h"
+#include "net.minecraft.world.phys.h"
+#include "MeleeAttackGoal.h"
+
+void MeleeAttackGoal::_init(Mob *mob, float speed, bool trackTarget)
+{
+	this->attackType = eTYPE_NOTSET;
+	this->mob = mob;
+	this->level = mob->level;
+	this->speed = speed;
+	this->trackTarget = trackTarget;
+	setRequiredControlFlags(Control::MoveControlFlag | Control::LookControlFlag);
+
+
+	attackTime = 0;
+	path = NULL;
+	timeToRecalcPath = 0;
+}
+
+MeleeAttackGoal::MeleeAttackGoal(Mob *mob, eINSTANCEOF attackType, float speed, bool trackTarget)
+{
+	_init(mob, speed, trackTarget);
+	this->attackType = attackType;
+}
+
+MeleeAttackGoal::MeleeAttackGoal(Mob *mob, float speed, bool trackTarget)
+{
+	_init(mob,speed,trackTarget);
+}
+
+MeleeAttackGoal::~MeleeAttackGoal()
+{
+	if(path != NULL) delete path;
+}
+
+bool MeleeAttackGoal::canUse()
+{
+	shared_ptr<Mob> bestTarget = mob->getTarget();
+	if (bestTarget == NULL) return false;
+	if(!bestTarget->isAlive()) return false;
+	if (attackType != eTYPE_NOTSET && (attackType & bestTarget->GetType()) != attackType) return false;
+	target = weak_ptr<Mob>(bestTarget);
+	delete path;
+	path = mob->getNavigation()->createPath(target.lock());
+	return path != NULL;
+}
+
+bool MeleeAttackGoal::canContinueToUse()
+{
+	shared_ptr<Mob> bestTarget = mob->getTarget();
+	if (bestTarget == NULL) return false;
+	if (target.lock() == NULL || !target.lock()->isAlive()) return false;
+	if (!trackTarget) return !mob->getNavigation()->isDone();
+	if (!mob->isWithinRestriction(Mth::floor(target.lock()->x), Mth::floor(target.lock()->y), Mth::floor(target.lock()->z))) return false;
+	return true;
+}
+
+void MeleeAttackGoal::start()
+{
+	mob->getNavigation()->moveTo(path, speed);
+	path = NULL;
+	timeToRecalcPath = 0;
+}
+
+void MeleeAttackGoal::stop()
+{
+	target = weak_ptr<Mob>();
+	mob->getNavigation()->stop();
+}
+
+void MeleeAttackGoal::tick()
+{
+	mob->getLookControl()->setLookAt(target.lock(), 30, 30);
+	if (trackTarget || mob->getSensing()->canSee(target.lock()))
+	{
+		if (--timeToRecalcPath <= 0)
+		{
+			timeToRecalcPath = 4 + mob->getRandom()->nextInt(7);
+			mob->getNavigation()->moveTo(target.lock(), speed);
+		}
+	}
+
+	attackTime = max(attackTime - 1, 0);
+
+	double meleeRadiusSqr = (mob->bbWidth * 2) * (mob->bbWidth * 2);
+	if (mob->distanceToSqr(target.lock()->x, target.lock()->bb->y0, target.lock()->z) > meleeRadiusSqr) return;
+	if (attackTime > 0) return;
+	attackTime = 20;
+	mob->doHurtTarget(target.lock());
+}