308 lines
10 KiB
Java
308 lines
10 KiB
Java
package net.minecraft.world.entity.projectile;
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import com.google.common.base.MoreObjects;
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import it.unimi.dsi.fastutil.doubles.DoubleDoubleImmutablePair;
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import java.util.UUID;
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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.protocol.Packet;
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import net.minecraft.network.protocol.game.ClientGamePacketListener;
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import net.minecraft.network.protocol.game.ClientboundAddEntityPacket;
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import net.minecraft.server.level.ServerEntity;
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import net.minecraft.server.level.ServerLevel;
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import net.minecraft.tags.EntityTypeTags;
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import net.minecraft.util.Mth;
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import net.minecraft.world.damagesource.DamageSource;
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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.TraceableEntity;
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import net.minecraft.world.entity.player.Player;
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import net.minecraft.world.level.GameRules;
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import net.minecraft.world.level.Level;
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import net.minecraft.world.level.block.state.BlockState;
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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 abstract class Projectile extends Entity implements TraceableEntity {
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@Nullable
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private UUID ownerUUID;
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@Nullable
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private Entity cachedOwner;
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private boolean leftOwner;
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private boolean hasBeenShot;
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@Nullable
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private Entity lastDeflectedBy;
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Projectile(EntityType<? extends Projectile> entityType, Level level) {
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super(entityType, level);
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}
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public void setOwner(@Nullable Entity owner) {
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if (owner != null) {
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this.ownerUUID = owner.getUUID();
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this.cachedOwner = owner;
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}
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}
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@Nullable
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@Override
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public Entity getOwner() {
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if (this.cachedOwner != null && !this.cachedOwner.isRemoved()) {
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return this.cachedOwner;
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} else if (this.ownerUUID != null && this.level() instanceof ServerLevel serverLevel) {
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this.cachedOwner = serverLevel.getEntity(this.ownerUUID);
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return this.cachedOwner;
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} else {
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return null;
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}
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}
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public Entity getEffectSource() {
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return MoreObjects.firstNonNull(this.getOwner(), this);
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}
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@Override
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protected void addAdditionalSaveData(CompoundTag compound) {
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if (this.ownerUUID != null) {
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compound.putUUID("Owner", this.ownerUUID);
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}
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if (this.leftOwner) {
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compound.putBoolean("LeftOwner", true);
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}
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compound.putBoolean("HasBeenShot", this.hasBeenShot);
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}
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protected boolean ownedBy(Entity entity) {
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return entity.getUUID().equals(this.ownerUUID);
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}
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@Override
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protected void readAdditionalSaveData(CompoundTag compound) {
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if (compound.hasUUID("Owner")) {
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this.ownerUUID = compound.getUUID("Owner");
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this.cachedOwner = null;
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}
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this.leftOwner = compound.getBoolean("LeftOwner");
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this.hasBeenShot = compound.getBoolean("HasBeenShot");
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}
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@Override
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public void restoreFrom(Entity entity) {
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super.restoreFrom(entity);
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if (entity instanceof Projectile projectile) {
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this.cachedOwner = projectile.cachedOwner;
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}
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}
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@Override
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public void tick() {
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if (!this.hasBeenShot) {
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this.gameEvent(GameEvent.PROJECTILE_SHOOT, this.getOwner());
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this.hasBeenShot = true;
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}
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if (!this.leftOwner) {
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this.leftOwner = this.checkLeftOwner();
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}
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super.tick();
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}
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private boolean checkLeftOwner() {
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Entity entity = this.getOwner();
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if (entity != null) {
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for (Entity entity2 : this.level()
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.getEntities(this, this.getBoundingBox().expandTowards(this.getDeltaMovement()).inflate(1.0), entityx -> !entityx.isSpectator() && entityx.isPickable())) {
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if (entity2.getRootVehicle() == entity.getRootVehicle()) {
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return false;
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}
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}
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}
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return true;
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}
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public Vec3 getMovementToShoot(double x, double y, double z, float velocity, float inaccuracy) {
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return new Vec3(x, y, z)
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.normalize()
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.add(this.random.triangle(0.0, 0.0172275 * inaccuracy), this.random.triangle(0.0, 0.0172275 * inaccuracy), this.random.triangle(0.0, 0.0172275 * inaccuracy))
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.scale(velocity);
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}
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/**
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* Similar to setArrowHeading, it's point the throwable entity to a x, y, z direction.
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*/
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public void shoot(double x, double y, double z, float velocity, float inaccuracy) {
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Vec3 vec3 = this.getMovementToShoot(x, y, z, velocity, inaccuracy);
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this.setDeltaMovement(vec3);
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this.hasImpulse = true;
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double d = vec3.horizontalDistance();
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this.setYRot((float)(Mth.atan2(vec3.x, vec3.z) * 180.0F / (float)Math.PI));
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this.setXRot((float)(Mth.atan2(vec3.y, d) * 180.0F / (float)Math.PI));
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this.yRotO = this.getYRot();
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this.xRotO = this.getXRot();
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}
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public void shootFromRotation(Entity shooter, float x, float y, float z, float velocity, float inaccuracy) {
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float f = -Mth.sin(y * (float) (Math.PI / 180.0)) * Mth.cos(x * (float) (Math.PI / 180.0));
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float g = -Mth.sin((x + z) * (float) (Math.PI / 180.0));
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float h = Mth.cos(y * (float) (Math.PI / 180.0)) * Mth.cos(x * (float) (Math.PI / 180.0));
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this.shoot(f, g, h, velocity, inaccuracy);
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Vec3 vec3 = shooter.getKnownMovement();
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this.setDeltaMovement(this.getDeltaMovement().add(vec3.x, shooter.onGround() ? 0.0 : vec3.y, vec3.z));
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}
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protected ProjectileDeflection hitTargetOrDeflectSelf(HitResult hitResult) {
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if (hitResult.getType() == HitResult.Type.ENTITY) {
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EntityHitResult entityHitResult = (EntityHitResult)hitResult;
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Entity entity = entityHitResult.getEntity();
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ProjectileDeflection projectileDeflection = entity.deflection(this);
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if (projectileDeflection != ProjectileDeflection.NONE) {
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if (entity != this.lastDeflectedBy && this.deflect(projectileDeflection, entity, this.getOwner(), false)) {
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this.lastDeflectedBy = entity;
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}
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return projectileDeflection;
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}
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}
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this.onHit(hitResult);
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return ProjectileDeflection.NONE;
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}
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public boolean deflect(ProjectileDeflection deflection, @Nullable Entity entity, @Nullable Entity owner, boolean deflectedByPlayer) {
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if (!this.level().isClientSide) {
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deflection.deflect(this, entity, this.random);
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this.setOwner(owner);
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this.onDeflection(entity, deflectedByPlayer);
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}
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return true;
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}
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protected void onDeflection(@Nullable Entity entity, boolean deflectedByPlayer) {
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}
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/**
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* Called when this EntityFireball hits a block or entity.
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*/
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protected void onHit(HitResult result) {
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HitResult.Type type = result.getType();
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if (type == HitResult.Type.ENTITY) {
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EntityHitResult entityHitResult = (EntityHitResult)result;
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Entity entity = entityHitResult.getEntity();
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if (entity.getType().is(EntityTypeTags.REDIRECTABLE_PROJECTILE) && entity instanceof Projectile projectile) {
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projectile.deflect(ProjectileDeflection.AIM_DEFLECT, this.getOwner(), this.getOwner(), true);
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}
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this.onHitEntity(entityHitResult);
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this.level().gameEvent(GameEvent.PROJECTILE_LAND, result.getLocation(), GameEvent.Context.of(this, null));
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} else if (type == HitResult.Type.BLOCK) {
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BlockHitResult blockHitResult = (BlockHitResult)result;
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this.onHitBlock(blockHitResult);
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BlockPos blockPos = blockHitResult.getBlockPos();
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this.level().gameEvent(GameEvent.PROJECTILE_LAND, blockPos, GameEvent.Context.of(this, this.level().getBlockState(blockPos)));
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}
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}
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/**
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* Called when the arrow hits an entity
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*/
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protected void onHitEntity(EntityHitResult result) {
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}
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protected void onHitBlock(BlockHitResult result) {
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BlockState blockState = this.level().getBlockState(result.getBlockPos());
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blockState.onProjectileHit(this.level(), blockState, result, this);
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}
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@Override
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public void lerpMotion(double x, double y, double z) {
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this.setDeltaMovement(x, y, z);
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if (this.xRotO == 0.0F && this.yRotO == 0.0F) {
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double d = Math.sqrt(x * x + z * z);
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this.setXRot((float)(Mth.atan2(y, d) * 180.0F / (float)Math.PI));
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this.setYRot((float)(Mth.atan2(x, z) * 180.0F / (float)Math.PI));
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this.xRotO = this.getXRot();
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this.yRotO = this.getYRot();
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this.moveTo(this.getX(), this.getY(), this.getZ(), this.getYRot(), this.getXRot());
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}
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}
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protected boolean canHitEntity(Entity target) {
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if (!target.canBeHitByProjectile()) {
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return false;
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} else {
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Entity entity = this.getOwner();
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return entity == null || this.leftOwner || !entity.isPassengerOfSameVehicle(target);
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}
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}
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protected void updateRotation() {
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Vec3 vec3 = this.getDeltaMovement();
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double d = vec3.horizontalDistance();
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this.setXRot(lerpRotation(this.xRotO, (float)(Mth.atan2(vec3.y, d) * 180.0F / (float)Math.PI)));
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this.setYRot(lerpRotation(this.yRotO, (float)(Mth.atan2(vec3.x, vec3.z) * 180.0F / (float)Math.PI)));
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}
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protected static float lerpRotation(float currentRotation, float targetRotation) {
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while (targetRotation - currentRotation < -180.0F) {
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currentRotation -= 360.0F;
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}
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while (targetRotation - currentRotation >= 180.0F) {
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currentRotation += 360.0F;
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}
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return Mth.lerp(0.2F, currentRotation, targetRotation);
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}
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@Override
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public Packet<ClientGamePacketListener> getAddEntityPacket(ServerEntity entity) {
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Entity entity2 = this.getOwner();
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return new ClientboundAddEntityPacket(this, entity, entity2 == null ? 0 : entity2.getId());
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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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Entity entity = this.level().getEntity(packet.getData());
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if (entity != null) {
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this.setOwner(entity);
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}
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}
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@Override
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public boolean mayInteract(Level level, BlockPos pos) {
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Entity entity = this.getOwner();
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return entity instanceof Player ? entity.mayInteract(level, pos) : entity == null || level.getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING);
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}
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public boolean mayBreak(Level level) {
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return this.getType().is(EntityTypeTags.IMPACT_PROJECTILES) && level.getGameRules().getBoolean(GameRules.RULE_PROJECTILESCANBREAKBLOCKS);
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}
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@Override
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public boolean isPickable() {
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return this.getType().is(EntityTypeTags.REDIRECTABLE_PROJECTILE);
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}
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@Override
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public float getPickRadius() {
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return this.isPickable() ? 1.0F : 0.0F;
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}
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public DoubleDoubleImmutablePair calculateHorizontalHurtKnockbackDirection(LivingEntity entity, DamageSource damageSource) {
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double d = this.getDeltaMovement().x;
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double e = this.getDeltaMovement().z;
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return DoubleDoubleImmutablePair.of(d, e);
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}
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}
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