280 lines
10 KiB
Java
280 lines
10 KiB
Java
package net.minecraft.world.level;
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import com.mojang.logging.LogUtils;
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import java.util.Optional;
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import java.util.function.Function;
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import net.minecraft.core.BlockPos;
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import net.minecraft.core.particles.ParticleTypes;
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import net.minecraft.core.registries.BuiltInRegistries;
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import net.minecraft.nbt.CompoundTag;
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import net.minecraft.server.level.ServerLevel;
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import net.minecraft.util.ProblemReporter;
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import net.minecraft.util.RandomSource;
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import net.minecraft.util.random.WeightedList;
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import net.minecraft.world.Difficulty;
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import net.minecraft.world.entity.Entity;
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import net.minecraft.world.entity.EntitySelector;
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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.Mob;
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import net.minecraft.world.entity.SpawnPlacements;
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import net.minecraft.world.level.entity.EntityTypeTest;
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import net.minecraft.world.level.gameevent.GameEvent;
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import net.minecraft.world.level.storage.TagValueInput;
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import net.minecraft.world.level.storage.ValueInput;
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import net.minecraft.world.level.storage.ValueOutput;
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import net.minecraft.world.phys.AABB;
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import net.minecraft.world.phys.Vec3;
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import org.jetbrains.annotations.Nullable;
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import org.slf4j.Logger;
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public abstract class BaseSpawner {
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private static final Logger LOGGER = LogUtils.getLogger();
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public static final String SPAWN_DATA_TAG = "SpawnData";
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private static final int EVENT_SPAWN = 1;
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private static final int DEFAULT_SPAWN_DELAY = 20;
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private static final int DEFAULT_MIN_SPAWN_DELAY = 200;
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private static final int DEFAULT_MAX_SPAWN_DELAY = 800;
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private static final int DEFAULT_SPAWN_COUNT = 4;
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private static final int DEFAULT_MAX_NEARBY_ENTITIES = 6;
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private static final int DEFAULT_REQUIRED_PLAYER_RANGE = 16;
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private static final int DEFAULT_SPAWN_RANGE = 4;
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private int spawnDelay = 20;
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private WeightedList<SpawnData> spawnPotentials = WeightedList.of();
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@Nullable
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private SpawnData nextSpawnData;
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private double spin;
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private double oSpin;
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private int minSpawnDelay = 200;
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private int maxSpawnDelay = 800;
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private int spawnCount = 4;
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/**
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* Cached instance of the entity to render inside the spawner.
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*/
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@Nullable
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private Entity displayEntity;
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private int maxNearbyEntities = 6;
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private int requiredPlayerRange = 16;
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private int spawnRange = 4;
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public void setEntityId(EntityType<?> type, @Nullable Level level, RandomSource random, BlockPos pos) {
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this.getOrCreateNextSpawnData(level, random, pos).getEntityToSpawn().putString("id", BuiltInRegistries.ENTITY_TYPE.getKey(type).toString());
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}
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private boolean isNearPlayer(Level level, BlockPos pos) {
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return level.hasNearbyAlivePlayer(pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5, this.requiredPlayerRange);
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}
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public void clientTick(Level level, BlockPos pos) {
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if (!this.isNearPlayer(level, pos)) {
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this.oSpin = this.spin;
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} else if (this.displayEntity != null) {
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RandomSource randomSource = level.getRandom();
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double d = pos.getX() + randomSource.nextDouble();
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double e = pos.getY() + randomSource.nextDouble();
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double f = pos.getZ() + randomSource.nextDouble();
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level.addParticle(ParticleTypes.SMOKE, d, e, f, 0.0, 0.0, 0.0);
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level.addParticle(ParticleTypes.FLAME, d, e, f, 0.0, 0.0, 0.0);
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if (this.spawnDelay > 0) {
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this.spawnDelay--;
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}
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this.oSpin = this.spin;
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this.spin = (this.spin + 1000.0F / (this.spawnDelay + 200.0F)) % 360.0;
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}
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}
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public void serverTick(ServerLevel serverLevel, BlockPos pos) {
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if (this.isNearPlayer(serverLevel, pos)) {
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if (this.spawnDelay == -1) {
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this.delay(serverLevel, pos);
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}
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if (this.spawnDelay > 0) {
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this.spawnDelay--;
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} else {
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boolean bl = false;
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RandomSource randomSource = serverLevel.getRandom();
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SpawnData spawnData = this.getOrCreateNextSpawnData(serverLevel, randomSource, pos);
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for (int i = 0; i < this.spawnCount; i++) {
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try (ProblemReporter.ScopedCollector scopedCollector = new ProblemReporter.ScopedCollector(this::toString, LOGGER)) {
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ValueInput valueInput = TagValueInput.create(scopedCollector, serverLevel.registryAccess(), spawnData.getEntityToSpawn());
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Optional<EntityType<?>> optional = EntityType.by(valueInput);
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if (optional.isEmpty()) {
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this.delay(serverLevel, pos);
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return;
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}
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Vec3 vec3 = (Vec3)valueInput.read("Pos", Vec3.CODEC)
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.orElseGet(
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() -> new Vec3(
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pos.getX() + (randomSource.nextDouble() - randomSource.nextDouble()) * this.spawnRange + 0.5,
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pos.getY() + randomSource.nextInt(3) - 1,
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pos.getZ() + (randomSource.nextDouble() - randomSource.nextDouble()) * this.spawnRange + 0.5
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)
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);
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if (serverLevel.noCollision(((EntityType)optional.get()).getSpawnAABB(vec3.x, vec3.y, vec3.z))) {
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BlockPos blockPos = BlockPos.containing(vec3);
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if (spawnData.getCustomSpawnRules().isPresent()) {
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if (!((EntityType)optional.get()).getCategory().isFriendly() && serverLevel.getDifficulty() == Difficulty.PEACEFUL) {
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continue;
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}
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SpawnData.CustomSpawnRules customSpawnRules = (SpawnData.CustomSpawnRules)spawnData.getCustomSpawnRules().get();
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if (!customSpawnRules.isValidPosition(blockPos, serverLevel)) {
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continue;
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}
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} else if (!SpawnPlacements.checkSpawnRules((EntityType)optional.get(), serverLevel, EntitySpawnReason.SPAWNER, blockPos, serverLevel.getRandom())) {
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continue;
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}
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Entity entity = EntityType.loadEntityRecursive(valueInput, serverLevel, EntitySpawnReason.SPAWNER, entityx -> {
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entityx.snapTo(vec3.x, vec3.y, vec3.z, entityx.getYRot(), entityx.getXRot());
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return entityx;
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});
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if (entity == null) {
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this.delay(serverLevel, pos);
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return;
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}
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int j = serverLevel.getEntities(
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EntityTypeTest.forExactClass(entity.getClass()),
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new AABB(pos.getX(), pos.getY(), pos.getZ(), pos.getX() + 1, pos.getY() + 1, pos.getZ() + 1).inflate(this.spawnRange),
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EntitySelector.NO_SPECTATORS
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)
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.size();
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if (j >= this.maxNearbyEntities) {
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this.delay(serverLevel, pos);
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return;
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}
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entity.snapTo(entity.getX(), entity.getY(), entity.getZ(), randomSource.nextFloat() * 360.0F, 0.0F);
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if (entity instanceof Mob mob) {
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if (spawnData.getCustomSpawnRules().isEmpty() && !mob.checkSpawnRules(serverLevel, EntitySpawnReason.SPAWNER)
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|| !mob.checkSpawnObstruction(serverLevel)) {
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continue;
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}
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boolean bl2 = spawnData.getEntityToSpawn().size() == 1 && spawnData.getEntityToSpawn().getString("id").isPresent();
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if (bl2) {
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((Mob)entity).finalizeSpawn(serverLevel, serverLevel.getCurrentDifficultyAt(entity.blockPosition()), EntitySpawnReason.SPAWNER, null);
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}
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spawnData.getEquipment().ifPresent(mob::equip);
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}
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if (!serverLevel.tryAddFreshEntityWithPassengers(entity)) {
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this.delay(serverLevel, pos);
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return;
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}
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serverLevel.levelEvent(2004, pos, 0);
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serverLevel.gameEvent(entity, GameEvent.ENTITY_PLACE, blockPos);
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if (entity instanceof Mob) {
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((Mob)entity).spawnAnim();
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}
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bl = true;
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}
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}
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}
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if (bl) {
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this.delay(serverLevel, pos);
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}
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return;
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}
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}
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}
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private void delay(Level level, BlockPos pos) {
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RandomSource randomSource = level.random;
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if (this.maxSpawnDelay <= this.minSpawnDelay) {
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this.spawnDelay = this.minSpawnDelay;
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} else {
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this.spawnDelay = this.minSpawnDelay + randomSource.nextInt(this.maxSpawnDelay - this.minSpawnDelay);
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}
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this.spawnPotentials.getRandom(randomSource).ifPresent(spawnData -> this.setNextSpawnData(level, pos, spawnData));
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this.broadcastEvent(level, pos, 1);
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}
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public void load(@Nullable Level level, BlockPos pos, ValueInput input) {
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this.spawnDelay = input.getShortOr("Delay", (short)20);
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input.read("SpawnData", SpawnData.CODEC).ifPresent(spawnData -> this.setNextSpawnData(level, pos, spawnData));
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this.spawnPotentials = (WeightedList<SpawnData>)input.read("SpawnPotentials", SpawnData.LIST_CODEC)
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.orElseGet(() -> WeightedList.of(this.nextSpawnData != null ? this.nextSpawnData : new SpawnData()));
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this.minSpawnDelay = input.getIntOr("MinSpawnDelay", 200);
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this.maxSpawnDelay = input.getIntOr("MaxSpawnDelay", 800);
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this.spawnCount = input.getIntOr("SpawnCount", 4);
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this.maxNearbyEntities = input.getIntOr("MaxNearbyEntities", 6);
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this.requiredPlayerRange = input.getIntOr("RequiredPlayerRange", 16);
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this.spawnRange = input.getIntOr("SpawnRange", 4);
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this.displayEntity = null;
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}
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public void save(ValueOutput output) {
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output.putShort("Delay", (short)this.spawnDelay);
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output.putShort("MinSpawnDelay", (short)this.minSpawnDelay);
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output.putShort("MaxSpawnDelay", (short)this.maxSpawnDelay);
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output.putShort("SpawnCount", (short)this.spawnCount);
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output.putShort("MaxNearbyEntities", (short)this.maxNearbyEntities);
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output.putShort("RequiredPlayerRange", (short)this.requiredPlayerRange);
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output.putShort("SpawnRange", (short)this.spawnRange);
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output.storeNullable("SpawnData", SpawnData.CODEC, this.nextSpawnData);
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output.store("SpawnPotentials", SpawnData.LIST_CODEC, this.spawnPotentials);
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}
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@Nullable
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public Entity getOrCreateDisplayEntity(Level level, BlockPos pos) {
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if (this.displayEntity == null) {
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CompoundTag compoundTag = this.getOrCreateNextSpawnData(level, level.getRandom(), pos).getEntityToSpawn();
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if (compoundTag.getString("id").isEmpty()) {
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return null;
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}
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this.displayEntity = EntityType.loadEntityRecursive(compoundTag, level, EntitySpawnReason.SPAWNER, Function.identity());
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if (compoundTag.size() == 1 && this.displayEntity instanceof Mob) {
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}
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}
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return this.displayEntity;
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}
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public boolean onEventTriggered(Level level, int id) {
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if (id == 1) {
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if (level.isClientSide) {
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this.spawnDelay = this.minSpawnDelay;
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}
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return true;
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} else {
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return false;
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}
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}
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protected void setNextSpawnData(@Nullable Level level, BlockPos pos, SpawnData nextSpawnData) {
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this.nextSpawnData = nextSpawnData;
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}
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private SpawnData getOrCreateNextSpawnData(@Nullable Level level, RandomSource random, BlockPos pos) {
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if (this.nextSpawnData != null) {
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return this.nextSpawnData;
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} else {
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this.setNextSpawnData(level, pos, (SpawnData)this.spawnPotentials.getRandom(random).orElseGet(SpawnData::new));
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return this.nextSpawnData;
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}
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}
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public abstract void broadcastEvent(Level level, BlockPos pos, int eventId);
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public double getSpin() {
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return this.spin;
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}
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public double getoSpin() {
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return this.oSpin;
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}
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}
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