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  1. Minecraft: Java Edition
  2. MC-232869

Adult striders can spawn with saddles in peaceful mode

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Details

    • Bug
    • Resolution: Unresolved
    • None
    • 1.17.1, 21w38a, 21w40a, 21w41a, 21w42a, 21w43a, 21w44a, 1.18 Pre-release 1, 1.18 Pre-release 2, 1.18 Pre-release 5, 1.18 Pre-release 6, 1.18 Release Candidate 1, 1.18, 1.18.1 Release Candidate 1, 1.18.1, 22w03a, 22w05a, 22w07a, 22w11a, 22w15a, 22w18a, 1.19, 1.19.1 Pre-release 5, 1.19.1, 1.19.2, 1.19.3
    • Confirmed
    • Mob spawning

    Description

      The bug

      According to MC-176468, striders should not spawn with saddles. However, in peaceful mode, striders can spawn with saddles, because it spawns as a jockey and the zombified piglin instantly despawns.

      To reproduce

      1. Create a Peaceful creative world.
      2. Go into the nether.
      3. Roam around and load new chunks, periodically executing the command:
        /tp @e[type=strider,nbt={Saddle:1b}] @p
      4. It will eventually be successful, indicating that striders with saddles spawn in peaceful mode.

      Code analysis (tentative)

      I am not sure if this is actually the cause of the issue, but it seems plausible. This is using Mojang mappings (21w11a). In Strider#finalizeSpawn(...), this is the code that spawns zombified piglin strider jockeys:

              ...
              if (this.random.nextInt(30) == 0) {
                  Mob $$5 = EntityType.ZOMBIFIED_PIGLIN.create($$0.getLevel());
                  $$3 = this.spawnJockey($$0, $$1, $$5, new Zombie.ZombieGroupData(Zombie.getSpawnAsBabyOdds(this.random), false));
                  $$5.setItemSlot(EquipmentSlot.MAINHAND, new ItemStack(Items.WARPED_FUNGUS_ON_A_STICK));
                  this.equipSaddle((SoundSource)null);
              }
              ...
              return super.finalizeSpawn($$0, $$1, $$2, $$3, $$4);
      

      There is no check done to verify the level difficulty, so the jockeys spawn in Peaceful mode only to despawn almost instantly, leaving the saddle behind.

      Attachments

        1. 2021-07-27_17.48.06.png
          2021-07-27_17.48.06.png
          648 kB
        2. MC-232869.mp4
          9.75 MB
        3. MC-232869.png
          MC-232869.png
          1.50 MB

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              Unassigned Unassigned
              ampolive [Mod] ampolive
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              Dates

                Created:
                Updated:
                CHK: