237 lines
8.1 KiB
Java
237 lines
8.1 KiB
Java
package net.minecraft.world.entity.monster;
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import net.minecraft.core.BlockPos;
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import net.minecraft.core.Holder;
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import net.minecraft.network.syncher.EntityDataAccessor;
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import net.minecraft.network.syncher.EntityDataSerializers;
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import net.minecraft.network.syncher.SynchedEntityData;
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import net.minecraft.sounds.SoundEvent;
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import net.minecraft.sounds.SoundEvents;
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import net.minecraft.util.RandomSource;
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import net.minecraft.world.Difficulty;
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import net.minecraft.world.DifficultyInstance;
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import net.minecraft.world.damagesource.DamageSource;
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import net.minecraft.world.effect.MobEffect;
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import net.minecraft.world.effect.MobEffectInstance;
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import net.minecraft.world.effect.MobEffects;
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import net.minecraft.world.entity.Entity;
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import net.minecraft.world.entity.EntitySpawnReason;
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import net.minecraft.world.entity.EntityType;
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import net.minecraft.world.entity.LivingEntity;
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import net.minecraft.world.entity.SpawnGroupData;
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import net.minecraft.world.entity.ai.attributes.AttributeSupplier;
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import net.minecraft.world.entity.ai.attributes.Attributes;
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import net.minecraft.world.entity.ai.goal.AvoidEntityGoal;
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import net.minecraft.world.entity.ai.goal.FloatGoal;
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import net.minecraft.world.entity.ai.goal.LeapAtTargetGoal;
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import net.minecraft.world.entity.ai.goal.LookAtPlayerGoal;
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import net.minecraft.world.entity.ai.goal.MeleeAttackGoal;
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import net.minecraft.world.entity.ai.goal.RandomLookAroundGoal;
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import net.minecraft.world.entity.ai.goal.WaterAvoidingRandomStrollGoal;
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import net.minecraft.world.entity.ai.goal.target.HurtByTargetGoal;
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import net.minecraft.world.entity.ai.goal.target.NearestAttackableTargetGoal;
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import net.minecraft.world.entity.ai.navigation.PathNavigation;
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import net.minecraft.world.entity.ai.navigation.WallClimberNavigation;
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import net.minecraft.world.entity.animal.IronGolem;
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import net.minecraft.world.entity.animal.armadillo.Armadillo;
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import net.minecraft.world.entity.player.Player;
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import net.minecraft.world.level.Level;
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import net.minecraft.world.level.ServerLevelAccessor;
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import net.minecraft.world.level.block.Blocks;
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import net.minecraft.world.level.block.state.BlockState;
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import net.minecraft.world.phys.Vec3;
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import org.jetbrains.annotations.Nullable;
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public class Spider extends Monster {
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private static final EntityDataAccessor<Byte> DATA_FLAGS_ID = SynchedEntityData.defineId(Spider.class, EntityDataSerializers.BYTE);
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private static final float SPIDER_SPECIAL_EFFECT_CHANCE = 0.1F;
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public Spider(EntityType<? extends Spider> entityType, Level level) {
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super(entityType, level);
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}
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@Override
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protected void registerGoals() {
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this.goalSelector.addGoal(1, new FloatGoal(this));
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this.goalSelector.addGoal(2, new AvoidEntityGoal(this, Armadillo.class, 6.0F, 1.0, 1.2, livingEntity -> !((Armadillo)livingEntity).isScared()));
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this.goalSelector.addGoal(3, new LeapAtTargetGoal(this, 0.4F));
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this.goalSelector.addGoal(4, new Spider.SpiderAttackGoal(this));
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this.goalSelector.addGoal(5, new WaterAvoidingRandomStrollGoal(this, 0.8));
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this.goalSelector.addGoal(6, new LookAtPlayerGoal(this, Player.class, 8.0F));
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this.goalSelector.addGoal(6, new RandomLookAroundGoal(this));
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this.targetSelector.addGoal(1, new HurtByTargetGoal(this));
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this.targetSelector.addGoal(2, new Spider.SpiderTargetGoal(this, Player.class));
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this.targetSelector.addGoal(3, new Spider.SpiderTargetGoal(this, IronGolem.class));
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}
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@Override
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protected PathNavigation createNavigation(Level level) {
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return new WallClimberNavigation(this, level);
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}
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@Override
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protected void defineSynchedData(SynchedEntityData.Builder builder) {
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super.defineSynchedData(builder);
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builder.define(DATA_FLAGS_ID, (byte)0);
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}
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@Override
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public void tick() {
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super.tick();
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if (!this.level().isClientSide) {
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this.setClimbing(this.horizontalCollision);
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}
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}
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public static AttributeSupplier.Builder createAttributes() {
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return Monster.createMonsterAttributes().add(Attributes.MAX_HEALTH, 16.0).add(Attributes.MOVEMENT_SPEED, 0.3F);
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}
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@Override
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protected SoundEvent getAmbientSound() {
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return SoundEvents.SPIDER_AMBIENT;
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}
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@Override
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protected SoundEvent getHurtSound(DamageSource damageSource) {
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return SoundEvents.SPIDER_HURT;
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}
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@Override
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protected SoundEvent getDeathSound() {
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return SoundEvents.SPIDER_DEATH;
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}
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@Override
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protected void playStepSound(BlockPos pos, BlockState state) {
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this.playSound(SoundEvents.SPIDER_STEP, 0.15F, 1.0F);
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}
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@Override
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public boolean onClimbable() {
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return this.isClimbing();
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}
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@Override
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public void makeStuckInBlock(BlockState state, Vec3 motionMultiplier) {
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if (!state.is(Blocks.COBWEB)) {
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super.makeStuckInBlock(state, motionMultiplier);
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}
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}
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@Override
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public boolean canBeAffected(MobEffectInstance effectInstance) {
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return effectInstance.is(MobEffects.POISON) ? false : super.canBeAffected(effectInstance);
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}
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/**
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* Returns {@code true} if the WatchableObject (Byte) is 0x01 otherwise returns {@code false}. The WatchableObject is updated using setBesideClimbableBlock.
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*/
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public boolean isClimbing() {
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return (this.entityData.get(DATA_FLAGS_ID) & 1) != 0;
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}
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/**
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* Updates the WatchableObject (Byte) created in entityInit(), setting it to 0x01 if par1 is true or 0x00 if it is false.
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*/
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public void setClimbing(boolean climbing) {
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byte b = this.entityData.get(DATA_FLAGS_ID);
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if (climbing) {
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b = (byte)(b | 1);
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} else {
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b = (byte)(b & -2);
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}
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this.entityData.set(DATA_FLAGS_ID, b);
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}
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@Nullable
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@Override
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public SpawnGroupData finalizeSpawn(
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ServerLevelAccessor level, DifficultyInstance difficulty, EntitySpawnReason spawnReason, @Nullable SpawnGroupData spawnGroupData
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) {
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spawnGroupData = super.finalizeSpawn(level, difficulty, spawnReason, spawnGroupData);
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RandomSource randomSource = level.getRandom();
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if (randomSource.nextInt(100) == 0) {
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Skeleton skeleton = EntityType.SKELETON.create(this.level(), EntitySpawnReason.JOCKEY);
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if (skeleton != null) {
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skeleton.snapTo(this.getX(), this.getY(), this.getZ(), this.getYRot(), 0.0F);
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skeleton.finalizeSpawn(level, difficulty, spawnReason, null);
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skeleton.startRiding(this);
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}
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}
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if (spawnGroupData == null) {
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spawnGroupData = new Spider.SpiderEffectsGroupData();
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if (level.getDifficulty() == Difficulty.HARD && randomSource.nextFloat() < 0.1F * difficulty.getSpecialMultiplier()) {
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((Spider.SpiderEffectsGroupData)spawnGroupData).setRandomEffect(randomSource);
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}
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}
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if (spawnGroupData instanceof Spider.SpiderEffectsGroupData spiderEffectsGroupData) {
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Holder<MobEffect> holder = spiderEffectsGroupData.effect;
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if (holder != null) {
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this.addEffect(new MobEffectInstance(holder, -1));
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}
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}
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return spawnGroupData;
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}
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@Override
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public Vec3 getVehicleAttachmentPoint(Entity entity) {
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return entity.getBbWidth() <= this.getBbWidth() ? new Vec3(0.0, 0.3125 * this.getScale(), 0.0) : super.getVehicleAttachmentPoint(entity);
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}
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static class SpiderAttackGoal extends MeleeAttackGoal {
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public SpiderAttackGoal(Spider spider) {
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super(spider, 1.0, true);
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}
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@Override
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public boolean canUse() {
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return super.canUse() && !this.mob.isVehicle();
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}
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@Override
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public boolean canContinueToUse() {
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float f = this.mob.getLightLevelDependentMagicValue();
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if (f >= 0.5F && this.mob.getRandom().nextInt(100) == 0) {
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this.mob.setTarget(null);
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return false;
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} else {
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return super.canContinueToUse();
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}
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}
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}
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public static class SpiderEffectsGroupData implements SpawnGroupData {
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@Nullable
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public Holder<MobEffect> effect;
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public void setRandomEffect(RandomSource random) {
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int i = random.nextInt(5);
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if (i <= 1) {
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this.effect = MobEffects.SPEED;
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} else if (i <= 2) {
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this.effect = MobEffects.STRENGTH;
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} else if (i <= 3) {
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this.effect = MobEffects.REGENERATION;
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} else if (i <= 4) {
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this.effect = MobEffects.INVISIBILITY;
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}
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}
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}
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static class SpiderTargetGoal<T extends LivingEntity> extends NearestAttackableTargetGoal<T> {
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public SpiderTargetGoal(Spider spider, Class<T> entityTypeToTarget) {
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super(spider, entityTypeToTarget, true);
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}
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@Override
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public boolean canUse() {
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float f = this.mob.getLightLevelDependentMagicValue();
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return f >= 0.5F ? false : super.canUse();
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}
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}
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}
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