[SOLVED][1.14.2] Changing/Adding to Vanilla Loot_Tables

[NickDerMitHut]

Hello, I wanted to add an CustomItem to the cows/any other mobs normal Drops.

My customcow class looks like this:

Spoiler

package nick.cockmod;

import net.minecraft.entity.EntityType;
import net.minecraft.entity.passive.CowEntity;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.World;

public class customcow extends CowEntity{

	public customcow(EntityType<? extends CowEntity> type, World p_i48567_2_) {
		super(type, p_i48567_2_);
		// TODO Auto-generated constructor stub
	}
		
	@Override
	public ResourceLocation getLootTable() {
		// TODO Auto-generated method stub
		return new ResourceLocation("cockmod", "entities/customcow");
	}
	
}

Ive tried a lot of variants for the customcow.json loot_table:

Spoiler

{
  "type": "minecraft:entity",
  "pools": [
    {
      "name": "cockmod:cockpool",
      "rolls": 1,
      "entries": [
        {
          "type": "minecraft:item",
          "name": "cockmod:cockblock"
        }
      ]
    }
  ]
}

or:

Spoiler

{
  "type": "minecraft:entity",
  "pools": [
    {
      "name": "cockmod:cockpool",    
      "rolls": 1,
      "entries": [
        {
          "type": "minecraft:item",
          "name": "cockmod:salt"
        }
      ]
    },
    {
      "rolls": 1,
      "entries": [
        {
          "type": "minecraft:loot_table",
          "name": "minecraft:entities/cow"
        }
      ]
    }
  ]
}

or just straight up copying the cow(or other mob) loot_table and changing the items:

Spoiler

{
  "type": "minecraft:entity",
  "pools": [
    {
      "rolls": 1,
      "entries": [
        {
          "type": "minecraft:item",
          "functions": [
            {
              "function": "minecraft:set_count",
              "count": {
                "min": 0.0,
                "max": 2.0,
                "type": "minecraft:uniform"
              }
            },
            {
              "function": "minecraft:looting_enchant",
              "count": {
                "min": 0.0,
                "max": 1.0
              }
            }
          ],
          "name": "cockmod:cockingot"
        }
      ]
    },
    {
      "rolls": 1,
      "entries": [
        {
          "type": "minecraft:item",
          "functions": [
            {
              "function": "minecraft:set_count",
              "count": {
                "min": 1.0,
                "max": 3.0,
                "type": "minecraft:uniform"
              }
            },            
            {
              "function": "minecraft:looting_enchant",
              "count": {
                "min": 0.0,
                "max": 1.0
              }
            }
          ],
          "name": "cockmod:salt"
        }
      ]
    }
  ]
}

But none of it seems to work. The cow is just dropping its vanilla items.

Has anybody got an idea?

Edited June 23, 2019 by NickDerMitHut

[Draco18s]

Creating a custom entity does not make the existing entity now your custom one. Its just dead code.

[NickDerMitHut]

Okay but how can I edit/add to a vanilla mobs's loot_table?

[larsgerrits]

Your mod is also technically a resource pack and a data pack. You basically treat your src/main/resources/ folder as both of them. That means you can add a custom loot table JSON file using the minecraft namespace.

[NickDerMitHut]

@larsgerrits Thank you so much! I got it now. I took a look inside a datapack. The json has to be in data/modid/minecraft/loot_tables/entities

And then my cow.json is looking like this and it works:

Spoiler

{

  "type": "minecraft:entity",

  "pools": [

    {
    "name": "cockmod:cockpool",
    
      "rolls": 1,

      "entries": [

        {

          "type": "minecraft:item",

          "functions": [

            {

              "function": "minecraft:set_count",

              "count": {

                "min": 0.0,

                "max": 4.0,

                "type": "minecraft:uniform"

              }

            },

            {

              "function": "minecraft:looting_enchant",

              "count": {

                "min": 0.0,

                "max": 1.0

              }

            }

          ],

          "name": "minecraft:leather"

        }

      ]

    },

    {
    "name": "cockmod:cockpool",
        
      "rolls": 1,

      "entries": [

        {

          "type": "minecraft:item",

          "functions": [

            {

              "function": "minecraft:set_count",

              "count": {

                "min": 0.0,

                "max": 4.0,

                "type": "minecraft:uniform"

              }

            },

            {

              "function": "minecraft:looting_enchant",

              "count": {

                "min": 0.0,

                "max": 1.0

              }

            }

          ],

          "name": "cockmod:salt"

        }

      ]

    },

    {
    "name": "cockmod:cockpool",

      "rolls": 1,

      "entries": [

        {

          "type": "minecraft:item",

          "functions": [

            {

              "function": "minecraft:set_count",

              "count": {

                "min": 1.0,

                "max": 4.0,

                "type": "minecraft:uniform"

              }

            },

            {

              "function": "minecraft:furnace_smelt",

              "conditions": [

                {

                  "condition": "minecraft:entity_properties",

                  "predicate": {

                    "flags": {

                      "is_on_fire": true

                    }

                  },

                  "entity": "this"

                }

              ]

            },

            {

              "function": "minecraft:looting_enchant",

              "count": {

                "min": 0.0,

                "max": 1.0

              }

            }

          ],

          "name": "minecraft:beef"

        }
      ]

    }

  ]

}

I could also eddit/add new crafting recipes or new items to dungion chests.