338 lines
11 KiB
Java
338 lines
11 KiB
Java
package net.minecraft.world.entity.projectile;
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import com.google.common.base.MoreObjects;
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import com.google.common.collect.Lists;
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import java.util.List;
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import java.util.UUID;
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import net.minecraft.core.BlockPos;
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import net.minecraft.core.Direction;
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import net.minecraft.core.particles.ParticleTypes;
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import net.minecraft.nbt.CompoundTag;
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import net.minecraft.network.protocol.game.ClientboundAddEntityPacket;
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import net.minecraft.network.syncher.SynchedEntityData;
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import net.minecraft.server.level.ServerLevel;
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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.util.Mth;
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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.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.EntityType;
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import net.minecraft.world.entity.LivingEntity;
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import net.minecraft.world.entity.player.Player;
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import net.minecraft.world.item.enchantment.EnchantmentHelper;
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import net.minecraft.world.level.Level;
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import net.minecraft.world.level.gameevent.GameEvent;
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import net.minecraft.world.phys.BlockHitResult;
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import net.minecraft.world.phys.EntityHitResult;
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import net.minecraft.world.phys.HitResult;
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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 ShulkerBullet extends Projectile {
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private static final double SPEED = 0.15;
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@Nullable
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private Entity finalTarget;
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@Nullable
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private Direction currentMoveDirection;
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private int flightSteps;
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private double targetDeltaX;
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private double targetDeltaY;
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private double targetDeltaZ;
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@Nullable
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private UUID targetId;
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public ShulkerBullet(EntityType<? extends ShulkerBullet> entityType, Level level) {
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super(entityType, level);
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this.noPhysics = true;
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}
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public ShulkerBullet(Level level, LivingEntity shooter, Entity finalTarget, Direction.Axis axis) {
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this(EntityType.SHULKER_BULLET, level);
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this.setOwner(shooter);
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Vec3 vec3 = shooter.getBoundingBox().getCenter();
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this.moveTo(vec3.x, vec3.y, vec3.z, this.getYRot(), this.getXRot());
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this.finalTarget = finalTarget;
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this.currentMoveDirection = Direction.UP;
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this.selectNextMoveDirection(axis);
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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 void addAdditionalSaveData(CompoundTag compound) {
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super.addAdditionalSaveData(compound);
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if (this.finalTarget != null) {
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compound.putUUID("Target", this.finalTarget.getUUID());
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}
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if (this.currentMoveDirection != null) {
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compound.putInt("Dir", this.currentMoveDirection.get3DDataValue());
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}
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compound.putInt("Steps", this.flightSteps);
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compound.putDouble("TXD", this.targetDeltaX);
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compound.putDouble("TYD", this.targetDeltaY);
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compound.putDouble("TZD", this.targetDeltaZ);
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}
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@Override
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protected void readAdditionalSaveData(CompoundTag compound) {
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super.readAdditionalSaveData(compound);
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this.flightSteps = compound.getInt("Steps");
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this.targetDeltaX = compound.getDouble("TXD");
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this.targetDeltaY = compound.getDouble("TYD");
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this.targetDeltaZ = compound.getDouble("TZD");
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if (compound.contains("Dir", 99)) {
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this.currentMoveDirection = Direction.from3DDataValue(compound.getInt("Dir"));
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}
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if (compound.hasUUID("Target")) {
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this.targetId = compound.getUUID("Target");
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}
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}
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@Override
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protected void defineSynchedData(SynchedEntityData.Builder builder) {
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}
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@Nullable
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private Direction getMoveDirection() {
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return this.currentMoveDirection;
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}
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private void setMoveDirection(@Nullable Direction direction) {
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this.currentMoveDirection = direction;
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}
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private void selectNextMoveDirection(@Nullable Direction.Axis axis) {
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double d = 0.5;
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BlockPos blockPos;
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if (this.finalTarget == null) {
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blockPos = this.blockPosition().below();
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} else {
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d = this.finalTarget.getBbHeight() * 0.5;
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blockPos = BlockPos.containing(this.finalTarget.getX(), this.finalTarget.getY() + d, this.finalTarget.getZ());
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}
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double e = blockPos.getX() + 0.5;
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double f = blockPos.getY() + d;
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double g = blockPos.getZ() + 0.5;
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Direction direction = null;
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if (!blockPos.closerToCenterThan(this.position(), 2.0)) {
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BlockPos blockPos2 = this.blockPosition();
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List<Direction> list = Lists.<Direction>newArrayList();
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if (axis != Direction.Axis.X) {
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if (blockPos2.getX() < blockPos.getX() && this.level().isEmptyBlock(blockPos2.east())) {
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list.add(Direction.EAST);
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} else if (blockPos2.getX() > blockPos.getX() && this.level().isEmptyBlock(blockPos2.west())) {
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list.add(Direction.WEST);
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}
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}
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if (axis != Direction.Axis.Y) {
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if (blockPos2.getY() < blockPos.getY() && this.level().isEmptyBlock(blockPos2.above())) {
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list.add(Direction.UP);
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} else if (blockPos2.getY() > blockPos.getY() && this.level().isEmptyBlock(blockPos2.below())) {
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list.add(Direction.DOWN);
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}
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}
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if (axis != Direction.Axis.Z) {
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if (blockPos2.getZ() < blockPos.getZ() && this.level().isEmptyBlock(blockPos2.south())) {
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list.add(Direction.SOUTH);
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} else if (blockPos2.getZ() > blockPos.getZ() && this.level().isEmptyBlock(blockPos2.north())) {
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list.add(Direction.NORTH);
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}
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}
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direction = Direction.getRandom(this.random);
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if (list.isEmpty()) {
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for (int i = 5; !this.level().isEmptyBlock(blockPos2.relative(direction)) && i > 0; i--) {
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direction = Direction.getRandom(this.random);
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}
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} else {
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direction = (Direction)list.get(this.random.nextInt(list.size()));
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}
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e = this.getX() + direction.getStepX();
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f = this.getY() + direction.getStepY();
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g = this.getZ() + direction.getStepZ();
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}
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this.setMoveDirection(direction);
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double h = e - this.getX();
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double j = f - this.getY();
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double k = g - this.getZ();
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double l = Math.sqrt(h * h + j * j + k * k);
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if (l == 0.0) {
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this.targetDeltaX = 0.0;
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this.targetDeltaY = 0.0;
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this.targetDeltaZ = 0.0;
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} else {
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this.targetDeltaX = h / l * 0.15;
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this.targetDeltaY = j / l * 0.15;
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this.targetDeltaZ = k / l * 0.15;
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}
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this.hasImpulse = true;
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this.flightSteps = 10 + this.random.nextInt(5) * 10;
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}
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@Override
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public void checkDespawn() {
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if (this.level().getDifficulty() == Difficulty.PEACEFUL) {
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this.discard();
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}
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}
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@Override
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protected double getDefaultGravity() {
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return 0.04;
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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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if (this.finalTarget == null && this.targetId != null) {
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this.finalTarget = ((ServerLevel)this.level()).getEntity(this.targetId);
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if (this.finalTarget == null) {
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this.targetId = null;
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}
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}
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if (this.finalTarget == null || !this.finalTarget.isAlive() || this.finalTarget instanceof Player && this.finalTarget.isSpectator()) {
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this.applyGravity();
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} else {
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this.targetDeltaX = Mth.clamp(this.targetDeltaX * 1.025, -1.0, 1.0);
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this.targetDeltaY = Mth.clamp(this.targetDeltaY * 1.025, -1.0, 1.0);
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this.targetDeltaZ = Mth.clamp(this.targetDeltaZ * 1.025, -1.0, 1.0);
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Vec3 vec3 = this.getDeltaMovement();
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this.setDeltaMovement(vec3.add((this.targetDeltaX - vec3.x) * 0.2, (this.targetDeltaY - vec3.y) * 0.2, (this.targetDeltaZ - vec3.z) * 0.2));
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}
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HitResult hitResult = ProjectileUtil.getHitResultOnMoveVector(this, this::canHitEntity);
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if (hitResult.getType() != HitResult.Type.MISS) {
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this.hitTargetOrDeflectSelf(hitResult);
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}
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}
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this.checkInsideBlocks();
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Vec3 vec3 = this.getDeltaMovement();
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this.setPos(this.getX() + vec3.x, this.getY() + vec3.y, this.getZ() + vec3.z);
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ProjectileUtil.rotateTowardsMovement(this, 0.5F);
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if (this.level().isClientSide) {
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this.level().addParticle(ParticleTypes.END_ROD, this.getX() - vec3.x, this.getY() - vec3.y + 0.15, this.getZ() - vec3.z, 0.0, 0.0, 0.0);
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} else if (this.finalTarget != null && !this.finalTarget.isRemoved()) {
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if (this.flightSteps > 0) {
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this.flightSteps--;
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if (this.flightSteps == 0) {
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this.selectNextMoveDirection(this.currentMoveDirection == null ? null : this.currentMoveDirection.getAxis());
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}
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}
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if (this.currentMoveDirection != null) {
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BlockPos blockPos = this.blockPosition();
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Direction.Axis axis = this.currentMoveDirection.getAxis();
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if (this.level().loadedAndEntityCanStandOn(blockPos.relative(this.currentMoveDirection), this)) {
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this.selectNextMoveDirection(axis);
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} else {
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BlockPos blockPos2 = this.finalTarget.blockPosition();
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if (axis == Direction.Axis.X && blockPos.getX() == blockPos2.getX()
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|| axis == Direction.Axis.Z && blockPos.getZ() == blockPos2.getZ()
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|| axis == Direction.Axis.Y && blockPos.getY() == blockPos2.getY()) {
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this.selectNextMoveDirection(axis);
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}
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}
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}
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}
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}
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@Override
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protected boolean canHitEntity(Entity target) {
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return super.canHitEntity(target) && !target.noPhysics;
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}
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@Override
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public boolean isOnFire() {
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return false;
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}
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@Override
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public boolean shouldRenderAtSqrDistance(double distance) {
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return distance < 16384.0;
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}
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@Override
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public float getLightLevelDependentMagicValue() {
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return 1.0F;
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}
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@Override
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protected void onHitEntity(EntityHitResult result) {
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super.onHitEntity(result);
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Entity entity = result.getEntity();
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Entity entity2 = this.getOwner();
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LivingEntity livingEntity = entity2 instanceof LivingEntity ? (LivingEntity)entity2 : null;
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DamageSource damageSource = this.damageSources().mobProjectile(this, livingEntity);
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boolean bl = entity.hurt(damageSource, 4.0F);
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if (bl) {
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if (this.level() instanceof ServerLevel serverLevel) {
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EnchantmentHelper.doPostAttackEffects(serverLevel, entity, damageSource);
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}
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if (entity instanceof LivingEntity livingEntity2) {
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livingEntity2.addEffect(new MobEffectInstance(MobEffects.LEVITATION, 200), MoreObjects.firstNonNull(entity2, this));
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}
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}
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}
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@Override
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protected void onHitBlock(BlockHitResult result) {
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super.onHitBlock(result);
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((ServerLevel)this.level()).sendParticles(ParticleTypes.EXPLOSION, this.getX(), this.getY(), this.getZ(), 2, 0.2, 0.2, 0.2, 0.0);
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this.playSound(SoundEvents.SHULKER_BULLET_HIT, 1.0F, 1.0F);
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}
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private void destroy() {
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this.discard();
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this.level().gameEvent(GameEvent.ENTITY_DAMAGE, this.position(), GameEvent.Context.of(this));
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}
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@Override
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protected void onHit(HitResult result) {
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super.onHit(result);
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this.destroy();
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}
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@Override
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public boolean isPickable() {
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return true;
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}
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@Override
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public boolean hurt(DamageSource source, float amount) {
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if (!this.level().isClientSide) {
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this.playSound(SoundEvents.SHULKER_BULLET_HURT, 1.0F, 1.0F);
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((ServerLevel)this.level()).sendParticles(ParticleTypes.CRIT, this.getX(), this.getY(), this.getZ(), 15, 0.2, 0.2, 0.2, 0.0);
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this.destroy();
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}
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return true;
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}
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@Override
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public void recreateFromPacket(ClientboundAddEntityPacket packet) {
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super.recreateFromPacket(packet);
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double d = packet.getXa();
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double e = packet.getYa();
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double f = packet.getZa();
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this.setDeltaMovement(d, e, f);
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}
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}
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