content: package net.minecraft.client.audio;
  
  import net.minecraft.client.Minecraft;
  import net.minecraft.util.ITickable;
  import net.minecraft.util.MathHelper;
  import net.minecraft.util.ResourceLocation;
  
  import java.util.Random;
  
  public class MusicTicker implements ITickable {
      private final Random rand = new Random();
      private final Minecraft mc;
      private ISound currentMusic;
      private int timeUntilNextMusic = 100;
  
      public MusicTicker(Minecraft mcIn) {
          this.mc = mcIn;
      }
  
      public void update() {
          MusicTicker.MusicType musicticker$musictype = this.mc.getAmbientMusicType();
  
          if (this.currentMusic != null) {
              if (!musicticker$musictype.getMusicLocation().equals(this.currentMusic.getSoundLocation())) {
                  this.mc.getSoundHandler().stopSound(this.currentMusic);
                  this.timeUntilNextMusic = MathHelper.getRandomIntegerInRange(this.rand, 0, musicticker$musictype.getMinDelay() / 2);
              }
  
              if (!this.mc.getSoundHandler().isSoundPlaying(this.currentMusic)) {
                  this.currentMusic = null;
                  this.timeUntilNextMusic = Math.min(MathHelper.getRandomIntegerInRange(this.rand, musicticker$musictype.getMinDelay(), musicticker$musictype.getMaxDelay()), this.timeUntilNextMusic);
              }
          }
  
          if (this.currentMusic == null && this.timeUntilNextMusic-- <= 0) {
              this.func_181558_a(musicticker$musictype);
          }
      }
  
      public void func_181558_a(MusicTicker.MusicType p_181558_1_) {
          this.currentMusic = PositionedSoundRecord.create(p_181558_1_.getMusicLocation());
          this.mc.getSoundHandler().playSound(this.currentMusic);
          this.timeUntilNextMusic = Integer.MAX_VALUE;
      }
  
      public void func_181557_a() {
          if (this.currentMusic != null) {
              this.mc.getSoundHandler().stopSound(this.currentMusic);
              this.currentMusic = null;
              this.timeUntilNextMusic = 0;
          }
      }
  
      public enum MusicType {
          MENU(new ResourceLocation("minecraft:music.menu"), 20, 600),
          GAME(new ResourceLocation("minecraft:music.game"), 12000, 24000),
          CREATIVE(new ResourceLocation("minecraft:music.game.creative"), 1200, 3600),
          CREDITS(new ResourceLocation("minecraft:music.game.end.credits"), Integer.MAX_VALUE, Integer.MAX_VALUE),
          NETHER(new ResourceLocation("minecraft:music.game.nether"), 1200, 3600),
          END_BOSS(new ResourceLocation("minecraft:music.game.end.dragon"), 0, 0),
          END(new ResourceLocation("minecraft:music.game.end"), 6000, 24000);
  
          private final ResourceLocation musicLocation;
          private final int minDelay;
          private final int maxDelay;
  
          MusicType(ResourceLocation location, int minDelayIn, int maxDelayIn) {
              this.musicLocation = location;
              this.minDelay = minDelayIn;
              this.maxDelay = maxDelayIn;
          }
  
          public ResourceLocation getMusicLocation() {
              return this.musicLocation;
          }
  
          public int getMinDelay() {
              return this.minDelay;
          }
  
          public int getMaxDelay() {
              return this.maxDelay;
          }
      }
  }
  