LTW3/data/minecraft/loot_tables/blocks/tall_grass.json

{
  "type": "minecraft:block",
  "pools": [
    {
      "rolls": 1.0,
      "bonus_rolls": 0.0,
      "entries": [
        {
          "type": "minecraft:alternatives",
          "children": [
            {
              "type": "minecraft:item",
              "conditions": [
                {
                  "condition": "minecraft:match_tool",
                  "predicate": {
                    "items": [
                      "minecraft:shears"
                    ]
                  }
                }
              ],
              "functions": [
                {
                  "function": "minecraft:set_count",
                  "count": 2.0,
                  "add": false
                }
              ],
              "name": "minecraft:grass"
            },
            {
              "type": "minecraft:item",
              "conditions": [
                {
                  "condition": "minecraft:survives_explosion"
                },
                {
                  "condition": "minecraft:random_chance",
                  "chance": 0.125
                }
              ],
              "name": "minecraft:wheat_seeds"
            }
          ]
        }
      ],
      "conditions": [
        {
          "condition": "minecraft:block_state_property",
          "block": "minecraft:tall_grass",
          "properties": {
            "half": "lower"
          }
        },
        {
          "condition": "minecraft:location_check",
          "predicate": {
            "block": {
              "blocks": [
                "minecraft:tall_grass"
              ],
              "state": {
                "half": "upper"
              }
            }
          },
          "offsetY": 1
        }
      ]
    },
    {
      "rolls": 1.0,
      "bonus_rolls": 0.0,
      "entries": [
        {
          "type": "minecraft:alternatives",
          "children": [
            {
              "type": "minecraft:item",
              "conditions": [
                {
                  "condition": "minecraft:match_tool",
                  "predicate": {
                    "items": [
                      "minecraft:shears"
                    ]
                  }
                }
              ],
              "functions": [
                {
                  "function": "minecraft:set_count",
                  "count": 2.0,
                  "add": false
                }
              ],
              "name": "minecraft:grass"
            },
            {
              "type": "minecraft:item",
              "conditions": [
                {
                  "condition": "minecraft:survives_explosion"
                },
                {
                  "condition": "minecraft:random_chance",
                  "chance": 0.125
                }
              ],
              "name": "minecraft:wheat_seeds"
            }
          ]
        }
      ],
      "conditions": [
        {
          "condition": "minecraft:block_state_property",
          "block": "minecraft:tall_grass",
          "properties": {
            "half": "upper"
          }
        },
        {
          "condition": "minecraft:location_check",
          "predicate": {
            "block": {
              "blocks": [
                "minecraft:tall_grass"
              ],
              "state": {
                "half": "lower"
              }
            }
          },
          "offsetY": -1
        }
      ]
    }
  ]
}