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70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
#include "LookAtPlayerGoal.h"
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#include "java/Random.h"
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#include "minecraft/world/entity/Entity.h"
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#include "minecraft/world/entity/Mob.h"
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#include "minecraft/world/entity/ai/control/Control.h"
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#include "minecraft/world/entity/ai/control/LookControl.h"
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#include "minecraft/world/entity/player/Player.h"
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#include "minecraft/world/level/Level.h"
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#include "minecraft/world/phys/AABB.h"
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LookAtPlayerGoal::LookAtPlayerGoal(Mob* mob, const std::type_info& lookAtType,
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float lookDistance)
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: lookAtType(lookAtType) {
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this->mob = mob;
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this->lookDistance = lookDistance;
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probability = 0.02f;
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setRequiredControlFlags(Control::LookControlFlag);
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lookTime = 0;
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}
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LookAtPlayerGoal::LookAtPlayerGoal(Mob* mob, const std::type_info& lookAtType,
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float lookDistance, float probability)
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: lookAtType(lookAtType) {
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this->mob = mob;
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this->lookDistance = lookDistance;
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this->probability = probability;
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setRequiredControlFlags(Control::LookControlFlag);
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lookTime = 0;
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}
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bool LookAtPlayerGoal::canUse() {
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if (mob->getRandom()->nextFloat() >= probability) return false;
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if (mob->getTarget() != nullptr) {
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lookAt = mob->getTarget();
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}
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if (lookAtType == typeid(Player)) {
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lookAt =
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mob->level->getNearestPlayer(mob->shared_from_this(), lookDistance);
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} else {
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AABB mob_bb = mob->bb.grow(lookDistance, 3, lookDistance);
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lookAt = std::weak_ptr<Entity>(mob->level->getClosestEntityOfClass(
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lookAtType, &mob_bb, mob->shared_from_this()));
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}
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return lookAt.lock() != nullptr;
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}
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bool LookAtPlayerGoal::canContinueToUse() {
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if (lookAt.lock() == nullptr || !lookAt.lock()->isAlive()) return false;
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if (mob->distanceToSqr(lookAt.lock()) > lookDistance * lookDistance)
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return false;
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return lookTime > 0;
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}
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void LookAtPlayerGoal::start() {
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lookTime = 40 + mob->getRandom()->nextInt(40);
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}
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void LookAtPlayerGoal::stop() { lookAt = std::weak_ptr<Entity>(); }
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void LookAtPlayerGoal::tick() {
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mob->getLookControl()->setLookAt(
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lookAt.lock()->x, lookAt.lock()->y + lookAt.lock()->getHeadHeight(),
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lookAt.lock()->z, 10, mob->getMaxHeadXRot());
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--lookTime;
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}
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