4jcraft/Minecraft.World/AI/Goals/RangedAttackGoal.cpp
2026-03-21 15:10:07 -05:00

103 lines
3.7 KiB
C++

#include "../../Platform/stdafx.h"
#include "../../Headers/net.minecraft.world.entity.ai.control.h"
#include "../../Headers/net.minecraft.world.entity.ai.navigation.h"
#include "../../Headers/net.minecraft.world.entity.ai.sensing.h"
#include "../../Headers/net.minecraft.world.entity.h"
#include "../../Headers/net.minecraft.world.entity.monster.h"
#include "../../Headers/net.minecraft.world.phys.h"
#include "RangedAttackGoal.h"
void RangedAttackGoal::_init(RangedAttackMob* rangedMob, Mob* mob,
double speedModifier, int attackIntervalMin,
int attackIntervalMax, float attackRadius) {
// if (!(mob instanceof LivingEntity))
//{
// throw new IllegalArgumentException("ArrowAttackGoal requires Mob
// implements RangedAttackMob");
// }
rangedAttackMob = rangedMob;
this->mob = mob;
this->speedModifier = speedModifier;
this->attackIntervalMin = attackIntervalMin;
this->attackIntervalMax = attackIntervalMax;
this->attackRadius = attackRadius;
attackRadiusSqr = attackRadius * attackRadius;
setRequiredControlFlags(Control::MoveControlFlag |
Control::LookControlFlag);
target = std::weak_ptr<LivingEntity>();
attackTime = -1;
seeTime = 0;
}
RangedAttackGoal::RangedAttackGoal(RangedAttackMob* rangedMob, Mob* mob,
double speedModifier, int attackInterval,
float attackRadius) {
_init(rangedMob, mob, speedModifier, attackInterval, attackInterval,
attackRadius);
}
RangedAttackGoal::RangedAttackGoal(RangedAttackMob* rangedMob, Mob* mob,
double speedModifier, int attackIntervalMin,
int attackIntervalMax, float attackRadius) {
_init(rangedMob, mob, speedModifier, attackIntervalMin, attackIntervalMax,
attackRadius);
}
bool RangedAttackGoal::canUse() {
std::shared_ptr<LivingEntity> bestTarget = mob->getTarget();
if (bestTarget == NULL) return false;
target = std::weak_ptr<LivingEntity>(bestTarget);
return true;
}
bool RangedAttackGoal::canContinueToUse() {
return canUse() || !mob->getNavigation()->isDone();
}
void RangedAttackGoal::stop() {
target = std::weak_ptr<LivingEntity>();
seeTime = 0;
attackTime = -1;
}
void RangedAttackGoal::tick() {
// 4J: It's possible the target has gone since canUse selected it, don't do
// tick if target is null
if (target.lock() == NULL) return;
double targetDistSqr = mob->distanceToSqr(
target.lock()->x, target.lock()->bb->y0, target.lock()->z);
bool canSee = mob->getSensing()->canSee(target.lock());
if (canSee) {
seeTime++;
} else {
seeTime = 0;
}
if (targetDistSqr > attackRadiusSqr || seeTime < 20) {
mob->getNavigation()->moveTo(target.lock(), speedModifier);
} else {
mob->getNavigation()->stop();
}
mob->getLookControl()->setLookAt(target.lock(), 30, 30);
if (--attackTime == 0) {
if (targetDistSqr > attackRadiusSqr || !canSee) return;
float dist = Mth::sqrt(targetDistSqr) / attackRadius;
float power = dist;
if (power < 0.1f) power = 0.1f;
if (power > 1) power = 1;
rangedAttackMob->performRangedAttack(target.lock(), power);
attackTime = Mth::floor(dist * (attackIntervalMax - attackIntervalMin) +
attackIntervalMin);
} else if (attackTime < 0) {
float dist = Mth::sqrt(targetDistSqr) / attackRadius;
attackTime = Mth::floor(dist * (attackIntervalMax - attackIntervalMin) +
attackIntervalMin);
}
}