330 lines
9.9 KiB
Java
330 lines
9.9 KiB
Java
package net.minecraft.world.entity.monster;
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import java.util.EnumSet;
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import net.minecraft.core.BlockPos;
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import net.minecraft.nbt.CompoundTag;
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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.network.syncher.SynchedEntityData.Builder;
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import net.minecraft.server.level.ServerLevel;
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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.sounds.SoundSource;
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import net.minecraft.tags.DamageTypeTags;
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import net.minecraft.util.Mth;
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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.damagesource.DamageSource;
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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.FlyingMob;
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import net.minecraft.world.entity.LivingEntity;
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import net.minecraft.world.entity.Mob;
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import net.minecraft.world.entity.ai.attributes.Attributes;
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import net.minecraft.world.entity.ai.control.MoveControl;
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import net.minecraft.world.entity.ai.goal.Goal;
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import net.minecraft.world.entity.ai.goal.Goal.Flag;
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import net.minecraft.world.entity.ai.goal.target.NearestAttackableTargetGoal;
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import net.minecraft.world.entity.player.Player;
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import net.minecraft.world.entity.projectile.LargeFireball;
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import net.minecraft.world.level.Level;
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import net.minecraft.world.level.LevelAccessor;
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import net.minecraft.world.phys.AABB;
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import net.minecraft.world.phys.Vec3;
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public class Ghast extends FlyingMob implements Enemy {
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private static final EntityDataAccessor<Boolean> DATA_IS_CHARGING = SynchedEntityData.defineId(Ghast.class, EntityDataSerializers.BOOLEAN);
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private int explosionPower = 1;
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public Ghast(EntityType<? extends Ghast> entityType, Level level) {
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super(entityType, level);
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this.xpReward = 5;
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this.moveControl = new Ghast.GhastMoveControl(this);
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}
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@Override
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protected void registerGoals() {
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this.goalSelector.addGoal(5, new Ghast.RandomFloatAroundGoal(this));
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this.goalSelector.addGoal(7, new Ghast.GhastLookGoal(this));
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this.goalSelector.addGoal(7, new Ghast.GhastShootFireballGoal(this));
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this.targetSelector
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.addGoal(
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1, new NearestAttackableTargetGoal(this, Player.class, 10, true, false, (livingEntity, serverLevel) -> Math.abs(livingEntity.getY() - this.getY()) <= 4.0)
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);
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}
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public boolean isCharging() {
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return this.entityData.get(DATA_IS_CHARGING);
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}
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public void setCharging(boolean charging) {
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this.entityData.set(DATA_IS_CHARGING, charging);
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}
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public int getExplosionPower() {
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return this.explosionPower;
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}
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@Override
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protected boolean shouldDespawnInPeaceful() {
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return true;
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}
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private static boolean isReflectedFireball(DamageSource damageSource) {
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return damageSource.getDirectEntity() instanceof LargeFireball && damageSource.getEntity() instanceof Player;
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}
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@Override
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public boolean isInvulnerableTo(ServerLevel level, DamageSource damageSource) {
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return this.isInvulnerable() && !damageSource.is(DamageTypeTags.BYPASSES_INVULNERABILITY)
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|| !isReflectedFireball(damageSource) && super.isInvulnerableTo(level, damageSource);
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}
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@Override
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public boolean hurtServer(ServerLevel level, DamageSource damageSource, float amount) {
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if (isReflectedFireball(damageSource)) {
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super.hurtServer(level, damageSource, 1000.0F);
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return true;
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} else {
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return this.isInvulnerableTo(level, damageSource) ? false : super.hurtServer(level, damageSource, amount);
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}
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}
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@Override
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protected void defineSynchedData(Builder builder) {
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super.defineSynchedData(builder);
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builder.define(DATA_IS_CHARGING, false);
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}
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public static net.minecraft.world.entity.ai.attributes.AttributeSupplier.Builder createAttributes() {
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return Mob.createMobAttributes().add(Attributes.MAX_HEALTH, 10.0).add(Attributes.FOLLOW_RANGE, 100.0);
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}
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@Override
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public SoundSource getSoundSource() {
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return SoundSource.HOSTILE;
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}
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@Override
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protected SoundEvent getAmbientSound() {
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return SoundEvents.GHAST_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.GHAST_HURT;
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}
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@Override
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protected SoundEvent getDeathSound() {
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return SoundEvents.GHAST_DEATH;
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}
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@Override
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protected float getSoundVolume() {
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return 5.0F;
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}
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public static boolean checkGhastSpawnRules(EntityType<Ghast> entityType, LevelAccessor level, EntitySpawnReason spawnReason, BlockPos pos, RandomSource random) {
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return level.getDifficulty() != Difficulty.PEACEFUL && random.nextInt(20) == 0 && checkMobSpawnRules(entityType, level, spawnReason, pos, random);
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}
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@Override
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public int getMaxSpawnClusterSize() {
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return 1;
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}
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@Override
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public void addAdditionalSaveData(CompoundTag tag) {
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super.addAdditionalSaveData(tag);
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tag.putByte("ExplosionPower", (byte)this.explosionPower);
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}
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@Override
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public void readAdditionalSaveData(CompoundTag tag) {
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super.readAdditionalSaveData(tag);
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if (tag.contains("ExplosionPower", 99)) {
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this.explosionPower = tag.getByte("ExplosionPower");
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}
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}
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static class GhastLookGoal extends Goal {
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private final Ghast ghast;
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public GhastLookGoal(Ghast ghast) {
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this.ghast = ghast;
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this.setFlags(EnumSet.of(Flag.LOOK));
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}
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@Override
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public boolean canUse() {
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return true;
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}
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@Override
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public boolean requiresUpdateEveryTick() {
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return true;
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}
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@Override
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public void tick() {
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if (this.ghast.getTarget() == null) {
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Vec3 vec3 = this.ghast.getDeltaMovement();
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this.ghast.setYRot(-((float)Mth.atan2(vec3.x, vec3.z)) * (180.0F / (float)Math.PI));
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this.ghast.yBodyRot = this.ghast.getYRot();
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} else {
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LivingEntity livingEntity = this.ghast.getTarget();
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double d = 64.0;
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if (livingEntity.distanceToSqr(this.ghast) < 4096.0) {
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double e = livingEntity.getX() - this.ghast.getX();
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double f = livingEntity.getZ() - this.ghast.getZ();
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this.ghast.setYRot(-((float)Mth.atan2(e, f)) * (180.0F / (float)Math.PI));
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this.ghast.yBodyRot = this.ghast.getYRot();
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}
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}
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}
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}
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static class GhastMoveControl extends MoveControl {
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private final Ghast ghast;
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private int floatDuration;
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public GhastMoveControl(Ghast ghast) {
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super(ghast);
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this.ghast = ghast;
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}
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@Override
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public void tick() {
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if (this.operation == MoveControl.Operation.MOVE_TO) {
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if (this.floatDuration-- <= 0) {
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this.floatDuration = this.floatDuration + this.ghast.getRandom().nextInt(5) + 2;
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Vec3 vec3 = new Vec3(this.wantedX - this.ghast.getX(), this.wantedY - this.ghast.getY(), this.wantedZ - this.ghast.getZ());
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double d = vec3.length();
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vec3 = vec3.normalize();
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if (this.canReach(vec3, Mth.ceil(d))) {
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this.ghast.setDeltaMovement(this.ghast.getDeltaMovement().add(vec3.scale(0.1)));
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} else {
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this.operation = MoveControl.Operation.WAIT;
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}
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}
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}
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}
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private boolean canReach(Vec3 pos, int length) {
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AABB aABB = this.ghast.getBoundingBox();
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for (int i = 1; i < length; i++) {
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aABB = aABB.move(pos);
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if (!this.ghast.level().noCollision(this.ghast, aABB)) {
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return false;
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}
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}
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return true;
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}
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}
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static class GhastShootFireballGoal extends Goal {
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private final Ghast ghast;
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public int chargeTime;
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public GhastShootFireballGoal(Ghast ghast) {
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this.ghast = ghast;
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}
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@Override
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public boolean canUse() {
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return this.ghast.getTarget() != null;
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}
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@Override
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public void start() {
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this.chargeTime = 0;
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}
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@Override
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public void stop() {
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this.ghast.setCharging(false);
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}
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@Override
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public boolean requiresUpdateEveryTick() {
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return true;
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}
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@Override
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public void tick() {
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LivingEntity livingEntity = this.ghast.getTarget();
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if (livingEntity != null) {
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double d = 64.0;
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if (livingEntity.distanceToSqr(this.ghast) < 4096.0 && this.ghast.hasLineOfSight(livingEntity)) {
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Level level = this.ghast.level();
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this.chargeTime++;
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if (this.chargeTime == 10 && !this.ghast.isSilent()) {
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level.levelEvent(null, 1015, this.ghast.blockPosition(), 0);
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}
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if (this.chargeTime == 20) {
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double e = 4.0;
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Vec3 vec3 = this.ghast.getViewVector(1.0F);
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double f = livingEntity.getX() - (this.ghast.getX() + vec3.x * 4.0);
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double g = livingEntity.getY(0.5) - (0.5 + this.ghast.getY(0.5));
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double h = livingEntity.getZ() - (this.ghast.getZ() + vec3.z * 4.0);
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Vec3 vec32 = new Vec3(f, g, h);
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if (!this.ghast.isSilent()) {
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level.levelEvent(null, 1016, this.ghast.blockPosition(), 0);
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}
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LargeFireball largeFireball = new LargeFireball(level, this.ghast, vec32.normalize(), this.ghast.getExplosionPower());
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largeFireball.setPos(this.ghast.getX() + vec3.x * 4.0, this.ghast.getY(0.5) + 0.5, largeFireball.getZ() + vec3.z * 4.0);
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level.addFreshEntity(largeFireball);
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this.chargeTime = -40;
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}
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} else if (this.chargeTime > 0) {
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this.chargeTime--;
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}
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this.ghast.setCharging(this.chargeTime > 10);
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}
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}
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}
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static class RandomFloatAroundGoal extends Goal {
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private final Ghast ghast;
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public RandomFloatAroundGoal(Ghast ghast) {
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this.ghast = ghast;
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this.setFlags(EnumSet.of(Flag.MOVE));
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}
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@Override
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public boolean canUse() {
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MoveControl moveControl = this.ghast.getMoveControl();
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if (!moveControl.hasWanted()) {
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return true;
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} else {
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double d = moveControl.getWantedX() - this.ghast.getX();
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double e = moveControl.getWantedY() - this.ghast.getY();
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double f = moveControl.getWantedZ() - this.ghast.getZ();
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double g = d * d + e * e + f * f;
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return g < 1.0 || g > 3600.0;
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}
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}
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@Override
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public boolean canContinueToUse() {
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return false;
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}
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@Override
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public void start() {
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RandomSource randomSource = this.ghast.getRandom();
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double d = this.ghast.getX() + (randomSource.nextFloat() * 2.0F - 1.0F) * 16.0F;
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double e = this.ghast.getY() + (randomSource.nextFloat() * 2.0F - 1.0F) * 16.0F;
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double f = this.ghast.getZ() + (randomSource.nextFloat() * 2.0F - 1.0F) * 16.0F;
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this.ghast.getMoveControl().setWantedPosition(d, e, f, 1.0);
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}
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}
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}
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