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  1. Minecraft (Bedrock codebase)
  2. MCPE-170184

Trade Tables no longer support custom entity Spawn Eggs

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    • Confirmed
    • Windows
    • 1025568

      In 1.19.80, spawn egg syntax was changed so that you reference the entity instead of using "set_actor_id" in loot tables and commands. However this change doesn't seem to have considered trade tables or the language files.

      For my mini-blocks addon, I've updated the pack to provide the player with the correct mini-block spawn egg from the entity when it's picked up via loot tables which works fine. (Loot table).

      However, to get the mini-blocks in survival, you buy them from the wandering trader.
      The problem is, using "minecraft:spawn_egg" with "set_actor_id" in the wandering trader trade table gives a default spawn egg instead of the mini-block, but changing it to match the loot table's updated system just breaks the trade table.

      e.g.
      Pre 1.19.80 this worked:

      {
          "max_uses": 3,
          "wants": [{
                  "item": "minecraft:emerald"
              }, {
                  "item": "wool:9"
              }
          ],
          "gives": [{
                  "item": "minecraft:spawn_egg",
                  "functions": [{
                          "function": "set_actor_id",
                          "id": "fmb:cyan_wool"
                      }
                  ],
                  "quantity": 8
              }
          ]
      }
      

      But in 1.19.80/81 it just gives a default spawn egg.

      Using the updated syntax:

      {
          "max_uses": 3,
          "wants": [{
                  "item": "minecraft:emerald"
              }, {
                  "item": "wool:9"
              }
          ],
          "gives": [{
                  "item": "fmb:cyan_wool_spawn_egg",
                  "quantity": 8
              }
          ]
      }
      

      causes the error:

      [Json][error]-In trade file: trading/economy_trades/wandering_trader_trades.json | "item" not found
      
      [Entity][error]-In trade file: trading/economy_trades/wandering_trader_trades.json | Trade [
         {
            "choice" : null,
            "functions" : null,
            "item" : "fmb:cyan_wool_spawn_egg",
            "quantity" : 8
         }
      ]
       doesn't have any recieves, at least one is required
      
      [Json][error]-In trade file: trading/economy_trades/wandering_trader_trades.json | num_to_select[1] must not be greater than the number of trades[0]
      

      As for the language files. They still reference "minecraft:spawn_egg:id" which works fine, but I assume this should also be changed to "namespace:actor_spawn_egg" to match the change.
      Here are the packs to check.

      7.3.0 uses the pre-1.19.80 wandering trader system and gives blank spawn eggs
      7.3.1 has the updated syntax and throws errors

      To replicate in version 7.3.0 (1.19.80+):
      1. Spawn a wandering trader (or find one in survival)
      2. Open their trades by interacting with them
      3. See blank spawn eggs instead of mini-blocks

      Expected results:
      Wandering trader has mini-blocks for sale
      Actual Results:
      Wandering trader sells blank spawn eggs

      To replicate in version 7.3.1 (1.19.80+):
      1. Spawn a wandering trader (or find one in survival)
      2. Open their trades by interacting with them
      3. See no trades at all

      Expected results:
      Wandering trader has mini-blocks for sale
      Actual Results:
      Wandering trader has no trades

        1. bug_partly-fixed-1(1.20.0.24).png
          4 kB
          Jean Lucas
        2. bug_partly-fixed-2(1.20.0.24).png
          2.02 MB
          Jean Lucas

            foxynotail Foxy No-Tail
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              Created:
              Updated:
              Resolved:
              CHK: