cn.nukkit.entity.EntityLiving Maven / Gradle / Ivy
package cn.nukkit.entity;
import cn.nukkit.Player;
import cn.nukkit.Server;
import cn.nukkit.api.*;
import cn.nukkit.block.Block;
import cn.nukkit.block.BlockCactus;
import cn.nukkit.block.BlockMagma;
import cn.nukkit.entity.data.ShortEntityData;
import cn.nukkit.entity.projectile.EntityProjectile;
import cn.nukkit.entity.weather.EntityWeather;
import cn.nukkit.event.entity.*;
import cn.nukkit.event.entity.EntityDamageEvent.DamageCause;
import cn.nukkit.item.Item;
import cn.nukkit.item.ItemTurtleShell;
import cn.nukkit.level.GameRule;
import cn.nukkit.level.Sound;
import cn.nukkit.level.format.FullChunk;
import cn.nukkit.math.Vector3;
import cn.nukkit.nbt.tag.CompoundTag;
import cn.nukkit.nbt.tag.FloatTag;
import cn.nukkit.network.protocol.AnimatePacket;
import cn.nukkit.network.protocol.EntityEventPacket;
import cn.nukkit.potion.Effect;
import cn.nukkit.utils.TickCachedBlockIterator;
import cn.nukkit.utils.Utils;
import co.aikar.timings.Timings;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
/**
* @author MagicDroidX (Nukkit Project)
*/
public abstract class EntityLiving extends Entity implements EntityDamageable {
public final static float DEFAULT_SPEED = 0.1f;
protected int attackTime = 0;
protected boolean invisible = false;
protected float movementSpeed = DEFAULT_SPEED;
protected int turtleTicks = 0;
private boolean attackTimeByShieldKb;
private int attackTimeBefore;
public EntityLiving(FullChunk chunk, CompoundTag nbt) {
super(chunk, nbt);
}
@Override
protected float getGravity() {
return 0.08f;
}
@Override
protected float getDrag() {
return 0.02f;
}
@Override
protected void initEntity() {
super.initEntity();
if (this.namedTag.contains("HealF")) {
this.namedTag.putFloat("Health", this.namedTag.getShort("HealF"));
this.namedTag.remove("HealF");
}
if (!this.namedTag.contains("Health") || !(this.namedTag.get("Health") instanceof FloatTag)) {
this.namedTag.putFloat("Health", this.getMaxHealth());
}
this.health = this.namedTag.getFloat("Health");
}
@Override
public void setHealth(float health) {
boolean wasAlive = this.isAlive();
super.setHealth(health);
if (this.isAlive() && !wasAlive) {
EntityEventPacket pk = new EntityEventPacket();
pk.eid = this.getId();
pk.event = EntityEventPacket.RESPAWN;
Server.broadcastPacket(this.hasSpawned.values(), pk);
}
}
@Override
public void saveNBT() {
super.saveNBT();
this.namedTag.putFloat("Health", this.getHealth());
}
public boolean hasLineOfSight(Entity entity) {
//todo
return true;
}
public void collidingWith(Entity ent) { // can override (IronGolem|Bats)
ent.applyEntityCollision(this);
}
@PowerNukkitDifference(info = "Using new method to play sounds", since = "1.4.0.0-PN")
@Override
public boolean attack(EntityDamageEvent source) {
if (this.noDamageTicks > 0 && source.getCause() != DamageCause.SUICIDE) {//ignore it if the cause is SUICIDE
return false;
} else if (this.attackTime > 0 && !attackTimeByShieldKb) {
EntityDamageEvent lastCause = this.getLastDamageCause();
if (lastCause != null && lastCause.getDamage() >= source.getDamage()) {
return false;
}
}
if (isBlocking() && this.blockedByShield(source)) {
return false;
}
if (super.attack(source)) {
if (source instanceof EntityDamageByEntityEvent) {
Entity damager = ((EntityDamageByEntityEvent) source).getDamager();
if (source instanceof EntityDamageByChildEntityEvent) {
damager = ((EntityDamageByChildEntityEvent) source).getChild();
}
//Critical hit
if (damager instanceof Player && !damager.onGround) {
AnimatePacket animate = new AnimatePacket();
animate.action = AnimatePacket.Action.CRITICAL_HIT;
animate.eid = getId();
this.getLevel().addChunkPacket(damager.getChunkX(), damager.getChunkZ(), animate);
this.getLevel().addSound(this, Sound.GAME_PLAYER_ATTACK_STRONG);
source.setDamage(source.getDamage() * 1.5f);
}
if (damager.isOnFire() && !(damager instanceof Player)) {
this.setOnFire(2 * this.server.getDifficulty());
}
double deltaX = this.x - damager.x;
double deltaZ = this.z - damager.z;
this.knockBack(damager, source.getDamage(), deltaX, deltaZ, ((EntityDamageByEntityEvent) source).getKnockBack());
}
EntityEventPacket pk = new EntityEventPacket();
pk.eid = this.getId();
pk.event = this.getHealth() <= 0 ? EntityEventPacket.DEATH_ANIMATION : EntityEventPacket.HURT_ANIMATION;
Server.broadcastPacket(this.hasSpawned.values(), pk);
this.attackTime = source.getAttackCooldown();
this.attackTimeByShieldKb = false;
this.scheduleUpdate();
return true;
} else {
return false;
}
}
public void knockBack(Entity attacker, double damage, double x, double z) {
this.knockBack(attacker, damage, x, z, 0.4);
}
public void knockBack(Entity attacker, double damage, double x, double z, double base) {
double f = Math.sqrt(x * x + z * z);
if (f <= 0) {
return;
}
f = 1 / f;
Vector3 motion = new Vector3(this.motionX, this.motionY, this.motionZ);
motion.x /= 2d;
motion.y /= 2d;
motion.z /= 2d;
motion.x += x * f * base;
motion.y += base;
motion.z += z * f * base;
if (motion.y > base) {
motion.y = base;
}
this.setMotion(motion);
}
@Override
public void kill() {
if (!this.isAlive()) {
return;
}
super.kill();
EntityDeathEvent ev = new EntityDeathEvent(this, this.getDrops());
this.server.getPluginManager().callEvent(ev);
var manager = this.server.getScoreboardManager();
//测试环境中此项会null，所以说需要判空下
if (manager != null) manager.onEntityDead(this);
if (this.level.getGameRules().getBoolean(GameRule.DO_ENTITY_DROPS)) {
for (cn.nukkit.item.Item item : ev.getDrops()) {
this.getLevel().dropItem(this, item);
}
}
}
@Override
public boolean entityBaseTick() {
return this.entityBaseTick(1);
}
@Override
public boolean entityBaseTick(int tickDiff) {
Timings.livingEntityBaseTickTimer.startTiming();
boolean isBreathing = !this.isInsideOfWater();
if (this instanceof Player) {
if (isBreathing && ((Player) this).getInventory().getHelmet() instanceof ItemTurtleShell) {
turtleTicks = 200;
} else if (turtleTicks > 0) {
isBreathing = true;
turtleTicks--;
}
if ((((Player) this).isCreative() || ((Player) this).isSpectator())) {
isBreathing = true;
}
}
this.setDataFlag(DATA_FLAGS, DATA_FLAG_BREATHING, isBreathing);
boolean hasUpdate = super.entityBaseTick(tickDiff);
if (this.isAlive()) {
if (this.isInsideOfSolid()) {
hasUpdate = true;
this.attack(new EntityDamageEvent(this, DamageCause.SUFFOCATION, 1));
}
if (this.isOnLadder() || this.hasEffect(Effect.LEVITATION) || this.hasEffect(Effect.SLOW_FALLING)) {
this.resetFallDistance();
}
if (!this.hasEffect(Effect.WATER_BREATHING) && !this.hasEffect(Effect.CONDUIT_POWER) && this.isInsideOfWater()) {
if (this instanceof EntitySwimmable || (this instanceof Player && (((Player) this).isCreative() || ((Player) this).isSpectator()))) {
this.setAirTicks(400);
} else {
if (turtleTicks == 0 || turtleTicks == 200) {
hasUpdate = true;
int airTicks = this.getAirTicks() - tickDiff;
if (airTicks <= -20) {
airTicks = 0;
this.attack(new EntityDamageEvent(this, DamageCause.DROWNING, 2));
}
setAirTicks(airTicks);
}
}
} else {
if (this instanceof EntitySwimmable) {
hasUpdate = true;
int airTicks = getAirTicks() - tickDiff;
if (airTicks <= -20) {
airTicks = 0;
this.attack(new EntityDamageEvent(this, DamageCause.SUFFOCATION, 2));
}
setAirTicks(airTicks);
} else {
int airTicks = getAirTicks();
if (airTicks < 400) {
setAirTicks(Math.min(400, airTicks + tickDiff * 5));
}
}
}
}
if (this.attackTime > 0) {
this.attackTime -= tickDiff;
if (this.attackTime <= 0) {
attackTimeByShieldKb = false;
}
hasUpdate = true;
}
//吐槽：性能不要了是吧放EntityLiving这里
//逻辑迁移到EntityVehicle去了
// if (this.riding == null) {
// for (Entity entity : level.fastNearbyEntities(this.boundingBox.grow(0.20000000298023224, 0.0D, 0.20000000298023224), this)) {
// if (entity instanceof EntityRideable) {
// this.collidingWith(entity);
// }
// }
// }
// Used to check collisions with magma / cactus blocks
// Math.round处理在某些条件下 出现x.999999的坐标条件,这里选择四舍五入
var block = this.level.getTickCachedBlock(getFloorX(), (int) (Math.round(this.y) - 1), getFloorZ());
if (block instanceof BlockMagma || block instanceof BlockCactus) block.onEntityCollide(this);
Timings.livingEntityBaseTickTimer.stopTiming();
return hasUpdate;
}
public Item[] getDrops() {
return Item.EMPTY_ARRAY;
}
public Block[] getLineOfSight(int maxDistance) {
return this.getLineOfSight(maxDistance, 0);
}
public Block[] getLineOfSight(int maxDistance, int maxLength) {
return this.getLineOfSight(maxDistance, maxLength, new Integer[]{});
}
@Deprecated
public Block[] getLineOfSight(int maxDistance, int maxLength, Map transparent) {
return this.getLineOfSight(maxDistance, maxLength, transparent.keySet().toArray(Utils.EMPTY_INTEGERS));
}
public Block[] getLineOfSight(int maxDistance, int maxLength, Integer[] transparent) {
if (maxDistance > 120) {
maxDistance = 120;
}
if (transparent != null && transparent.length == 0) {
transparent = null;
}
List blocks = new ArrayList<>();
var itr = new TickCachedBlockIterator(this.level, this.getPosition(), this.getDirectionVector(), this.getEyeHeight(), maxDistance);
while (itr.hasNext()) {
Block block = itr.next();
blocks.add(block);
if (maxLength != 0 && blocks.size() > maxLength) {
blocks.remove(0);
}
int id = block.getId();
if (transparent == null) {
if (id != 0) {
break;
}
} else {
if (Arrays.binarySearch(transparent, id) < 0) {
break;
}
}
}
return blocks.toArray(Block.EMPTY_ARRAY);
}
public Block getTargetBlock(int maxDistance) {
return getTargetBlock(maxDistance, new Integer[]{});
}
@Deprecated
public Block getTargetBlock(int maxDistance, Map transparent) {
return getTargetBlock(maxDistance, transparent.keySet().toArray(Utils.EMPTY_INTEGERS));
}
public Block getTargetBlock(int maxDistance, Integer[] transparent) {
try {
Block[] blocks = this.getLineOfSight(maxDistance, 1, transparent);
Block block = blocks[0];
if (block != null) {
if (transparent != null && transparent.length != 0) {
if (Arrays.binarySearch(transparent, block.getId()) < 0) {
return block;
}
} else {
return block;
}
}
} catch (Exception ignored) {
}
return null;
}
public float getMovementSpeed() {
return this.movementSpeed;
}
/**
* 设置该有生命实体的移动速度
*
* Set the movement speed of this Entity.
*
* @param speed 速度大小
Speed value
*/
public void setMovementSpeed(float speed) {
this.movementSpeed = speed;
}
public int getAirTicks() {
return this.getDataPropertyShort(DATA_AIR);
}
public void setAirTicks(int ticks) {
this.setDataProperty(new ShortEntityData(DATA_AIR, ticks));
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
protected boolean blockedByShield(EntityDamageEvent source) {
Entity damager = null;
if (source instanceof EntityDamageByChildEntityEvent) {
damager = ((EntityDamageByChildEntityEvent) source).getChild();
} else if (source instanceof EntityDamageByEntityEvent) {
damager = ((EntityDamageByEntityEvent) source).getDamager();
}
if (damager == null || damager instanceof EntityWeather || !this.isBlocking()) {
return false;
}
Vector3 entityPos = damager.getPosition();
Vector3 direction = this.getDirectionVector();
Vector3 normalizedVector = this.getPosition().subtract(entityPos).normalize();
boolean blocked = (normalizedVector.x * direction.x) + (normalizedVector.z * direction.z) < 0.0;
boolean knockBack = !(damager instanceof EntityProjectile);
EntityDamageBlockedEvent event = new EntityDamageBlockedEvent(this, source, knockBack, true);
if (!blocked || !source.canBeReducedByArmor()) {
event.setCancelled();
}
getServer().getPluginManager().callEvent(event);
if (event.isCancelled()) {
return false;
}
if (event.getKnockBackAttacker() && damager instanceof EntityLiving attacker) {
double deltaX = attacker.getX() - this.getX();
double deltaZ = attacker.getZ() - this.getZ();
attacker.knockBack(this, 0, deltaX, deltaZ);
attacker.attackTime = 10;
attacker.attackTimeByShieldKb = true;
}
onBlock(damager, source, event.getAnimation());
return true;
}
@PowerNukkitOnly
@PowerNukkitXDifference(since = "1.19.21-r4", info = "add EntityDamageEvent param to help cal the armor damage")
protected void onBlock(Entity entity, EntityDamageEvent event, boolean animate) {
if (animate) {
getLevel().addSound(this, Sound.ITEM_SHIELD_BLOCK);
}
}
@PowerNukkitOnly
public boolean isBlocking() {
return this.getDataFlag(DATA_FLAGS_EXTENDED, DATA_FLAG_BLOCKING);
}
@PowerNukkitOnly
public void setBlocking(boolean value) {
this.setDataFlag(DATA_FLAGS_EXTENDED, DATA_FLAG_BLOCKING, value);
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public boolean isPersistent() {
return namedTag.containsByte("Persistent") && namedTag.getBoolean("Persistent");
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public void setPersistent(boolean persistent) {
namedTag.putBoolean("Persistent", persistent);
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public void preAttack(Player player) {
if (attackTimeByShieldKb) {
attackTimeBefore = attackTime;
attackTime = 0;
}
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public void postAttack(Player player) {
if (attackTimeByShieldKb && attackTime == 0) {
attackTime = attackTimeBefore;
}
}
@PowerNukkitXOnly
@Since("1.6.0.0-PNX")
public int getAttackTime() {
return attackTime;
}
@PowerNukkitXOnly
@Since("1.6.0.0-PNX")
public boolean isAttackTimeByShieldKb() {
return attackTimeByShieldKb;
}
@PowerNukkitXOnly
@Since("1.6.0.0-PNX")
public int getAttackTimeBefore() {
return attackTimeBefore;
}
}