296 lines
10 KiB
Java
296 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.nbt.ListTag;
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import net.minecraft.nbt.NbtOps;
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import net.minecraft.server.level.ServerLevel;
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import net.minecraft.util.RandomSource;
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import net.minecraft.util.random.SimpleWeightedRandomList;
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import net.minecraft.util.random.WeightedEntry;
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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.EntityType;
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import net.minecraft.world.entity.Mob;
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import net.minecraft.world.entity.MobSpawnType;
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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.phys.AABB;
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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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public static final String SPAWN_DATA_TAG = "SpawnData";
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private static final Logger LOGGER = LogUtils.getLogger();
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private static final int EVENT_SPAWN = 1;
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private int spawnDelay = 20;
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private SimpleWeightedRandomList<SpawnData> spawnPotentials = SimpleWeightedRandomList.empty();
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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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CompoundTag compoundTag = spawnData.getEntityToSpawn();
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Optional<EntityType<?>> optional = EntityType.by(compoundTag);
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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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ListTag listTag = compoundTag.getList("Pos", 6);
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int j = listTag.size();
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double d = j >= 1 ? listTag.getDouble(0) : pos.getX() + (randomSource.nextDouble() - randomSource.nextDouble()) * this.spawnRange + 0.5;
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double e = j >= 2 ? listTag.getDouble(1) : pos.getY() + randomSource.nextInt(3) - 1;
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double f = j >= 3 ? listTag.getDouble(2) : pos.getZ() + (randomSource.nextDouble() - randomSource.nextDouble()) * this.spawnRange + 0.5;
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if (serverLevel.noCollision(((EntityType)optional.get()).getSpawnAABB(d, e, f))) {
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BlockPos blockPos = BlockPos.containing(d, e, f);
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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, MobSpawnType.SPAWNER, blockPos, serverLevel.getRandom())) {
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continue;
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}
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Entity entity = EntityType.loadEntityRecursive(compoundTag, serverLevel, entityx -> {
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entityx.moveTo(d, e, f, 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 k = 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 (k >= this.maxNearbyEntities) {
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this.delay(serverLevel, pos);
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return;
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}
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entity.moveTo(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, MobSpawnType.SPAWNER) || !mob.checkSpawnObstruction(serverLevel)) {
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continue;
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}
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boolean bl2 = spawnData.getEntityToSpawn().size() == 1 && spawnData.getEntityToSpawn().contains("id", 8);
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if (bl2) {
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((Mob)entity).finalizeSpawn(serverLevel, serverLevel.getCurrentDifficultyAt(entity.blockPosition()), MobSpawnType.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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if (bl) {
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this.delay(serverLevel, pos);
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}
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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(wrapper -> this.setNextSpawnData(level, pos, (SpawnData)wrapper.data()));
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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, CompoundTag tag) {
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this.spawnDelay = tag.getShort("Delay");
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boolean bl = tag.contains("SpawnData", 10);
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if (bl) {
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SpawnData spawnData = (SpawnData)SpawnData.CODEC
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.parse(NbtOps.INSTANCE, tag.getCompound("SpawnData"))
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.resultOrPartial(string -> LOGGER.warn("Invalid SpawnData: {}", string))
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.orElseGet(SpawnData::new);
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this.setNextSpawnData(level, pos, spawnData);
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}
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boolean bl2 = tag.contains("SpawnPotentials", 9);
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if (bl2) {
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ListTag listTag = tag.getList("SpawnPotentials", 10);
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this.spawnPotentials = (SimpleWeightedRandomList<SpawnData>)SpawnData.LIST_CODEC
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.parse(NbtOps.INSTANCE, listTag)
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.resultOrPartial(string -> LOGGER.warn("Invalid SpawnPotentials list: {}", string))
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.orElseGet(SimpleWeightedRandomList::empty);
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} else {
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this.spawnPotentials = SimpleWeightedRandomList.single(this.nextSpawnData != null ? this.nextSpawnData : new SpawnData());
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}
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if (tag.contains("MinSpawnDelay", 99)) {
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this.minSpawnDelay = tag.getShort("MinSpawnDelay");
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this.maxSpawnDelay = tag.getShort("MaxSpawnDelay");
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this.spawnCount = tag.getShort("SpawnCount");
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}
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if (tag.contains("MaxNearbyEntities", 99)) {
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this.maxNearbyEntities = tag.getShort("MaxNearbyEntities");
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this.requiredPlayerRange = tag.getShort("RequiredPlayerRange");
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}
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if (tag.contains("SpawnRange", 99)) {
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this.spawnRange = tag.getShort("SpawnRange");
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}
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this.displayEntity = null;
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}
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public CompoundTag save(CompoundTag tag) {
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tag.putShort("Delay", (short)this.spawnDelay);
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tag.putShort("MinSpawnDelay", (short)this.minSpawnDelay);
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tag.putShort("MaxSpawnDelay", (short)this.maxSpawnDelay);
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tag.putShort("SpawnCount", (short)this.spawnCount);
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tag.putShort("MaxNearbyEntities", (short)this.maxNearbyEntities);
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tag.putShort("RequiredPlayerRange", (short)this.requiredPlayerRange);
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tag.putShort("SpawnRange", (short)this.spawnRange);
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if (this.nextSpawnData != null) {
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tag.put(
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"SpawnData",
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SpawnData.CODEC.encodeStart(NbtOps.INSTANCE, this.nextSpawnData).getOrThrow(string -> new IllegalStateException("Invalid SpawnData: " + string))
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);
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}
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tag.put("SpawnPotentials", SpawnData.LIST_CODEC.encodeStart(NbtOps.INSTANCE, this.spawnPotentials).getOrThrow());
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return tag;
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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.contains("id", 8)) {
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return null;
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}
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this.displayEntity = EntityType.loadEntityRecursive(compoundTag, level, 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).map(WeightedEntry.Wrapper::data).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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