package net.minecraft.world.level.levelgen;

import net.minecraft.core.BlockPos;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.stats.ServerStatsCounter;
import net.minecraft.stats.Stats;
import net.minecraft.util.Mth;
import net.minecraft.util.RandomSource;
import net.minecraft.world.DifficultyInstance;
import net.minecraft.world.entity.EntitySpawnReason;
import net.minecraft.world.entity.EntityType;
import net.minecraft.world.entity.SpawnGroupData;
import net.minecraft.world.entity.monster.Phantom;
import net.minecraft.world.level.CustomSpawner;
import net.minecraft.world.level.GameRules;
import net.minecraft.world.level.NaturalSpawner;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.material.FluidState;

public class PhantomSpawner implements CustomSpawner {
	private int nextTick;

	@Override
	public void tick(ServerLevel level, boolean spawnEnemies, boolean spawnFriendlies) {
		if (spawnEnemies) {
			if (level.getGameRules().getBoolean(GameRules.RULE_DOINSOMNIA)) {
				RandomSource randomSource = level.random;
				this.nextTick--;
				if (this.nextTick <= 0) {
					this.nextTick = this.nextTick + (60 + randomSource.nextInt(60)) * 20;
					if (level.getSkyDarken() >= 5 || !level.dimensionType().hasSkyLight()) {
						for (ServerPlayer serverPlayer : level.players()) {
							if (!serverPlayer.isSpectator()) {
								BlockPos blockPos = serverPlayer.blockPosition();
								if (!level.dimensionType().hasSkyLight() || blockPos.getY() >= level.getSeaLevel() && level.canSeeSky(blockPos)) {
									DifficultyInstance difficultyInstance = level.getCurrentDifficultyAt(blockPos);
									if (difficultyInstance.isHarderThan(randomSource.nextFloat() * 3.0F)) {
										ServerStatsCounter serverStatsCounter = serverPlayer.getStats();
										int i = Mth.clamp(serverStatsCounter.getValue(Stats.CUSTOM.get(Stats.TIME_SINCE_REST)), 1, Integer.MAX_VALUE);
										int j = 24000;
										if (randomSource.nextInt(i) >= 72000) {
											BlockPos blockPos2 = blockPos.above(20 + randomSource.nextInt(15)).east(-10 + randomSource.nextInt(21)).south(-10 + randomSource.nextInt(21));
											BlockState blockState = level.getBlockState(blockPos2);
											FluidState fluidState = level.getFluidState(blockPos2);
											if (NaturalSpawner.isValidEmptySpawnBlock(level, blockPos2, blockState, fluidState, EntityType.PHANTOM)) {
												SpawnGroupData spawnGroupData = null;
												int k = 1 + randomSource.nextInt(difficultyInstance.getDifficulty().getId() + 1);

												for (int l = 0; l < k; l++) {
													Phantom phantom = EntityType.PHANTOM.create(level, EntitySpawnReason.NATURAL);
													if (phantom != null) {
														phantom.snapTo(blockPos2, 0.0F, 0.0F);
														spawnGroupData = phantom.finalizeSpawn(level, difficultyInstance, EntitySpawnReason.NATURAL, spawnGroupData);
														level.addFreshEntityWithPassengers(phantom);
													}
												}
											}
										}
									}
								}
							}
						}
					}
				}
			}
		}
	}
}