silverfish

{
  "format_version": "1.17.10",
  "minecraft:entity": {
    "description": {
      "identifier": "minecraft:silverfish",
      "is_spawnable": true,
      "is_summonable": true,
      "is_experimental": false
    },

    "component_groups": {
      "minecraft:silverfish_calm": {
        "minecraft:on_target_acquired" : {
          "event": "minecraft:become_angry",
          "target": "self"
        }
      },
      "minecraft:silverfish_angry": {
        "minecraft:angry": {
          "duration": -1,
          "broadcast_anger": true,
          "broadcast_range": 20,
          "calm_event": {
            "event": "minecraft:on_calm",
            "target": "self"
          }
        },
        "minecraft:behavior.melee_attack": {
          "priority": 4,
          "track_target": true
        },
        "minecraft:behavior.silverfish_wake_up_friends": {
          "priority": 1
        }
      }
    },

    "components": {
      "minecraft:is_hidden_when_invisible": {
      },
      "minecraft:experience_reward": {
        "on_death": "query.last_hit_by_player ? 5 : 0"
      },
      "minecraft:type_family": {
        "family":["silverfish", "monster", "lightweight", "mob", "arthropod" ]
      },
      "minecraft:breathable": {
        "total_supply": 15,
        "suffocate_time": 0
      },
      "minecraft:nameable": {
      },
      "minecraft:loot": {
        "table": "loot_tables/entities/silverfish.json"
      },
      "minecraft:health": {
        "value": 8,
        "max": 8
      },
      "minecraft:hurt_on_condition": {
        "damage_conditions": [
          {
            "filters": { "test": "in_lava", "subject": "self", "operator": "==", "value": true },
            "cause": "lava",
            "damage_per_tick": 4
          }
        ]
      },
      "minecraft:movement": {
        "value": 0.25
      },
      "minecraft:navigation.walk": {
        "can_path_over_water": true
      },
      "minecraft:movement.basic": {
      },
      "minecraft:jump.static": {
      },
      "minecraft:can_climb": {
      },
      "minecraft:attack": {
        "damage": 1
      },
      "minecraft:collision_box": {
        "width": 0.4,
        "height": 0.3
      },
      "minecraft:despawn": {
        "despawn_from_distance": {}
      },
      "minecraft:behavior.float": {
        "priority": 1
      },
      "minecraft:behavior.silverfish_merge_with_stone": {
        "priority": 5
      },
      "minecraft:behavior.nearest_attackable_target": {
        "priority": 2,
        "attack_interval": 10,
        "entity_types": [
          {
            "filters": {
                "any_of": [
                  { "test" :  "is_family", "subject" : "other", "value" :  "player"},
                  { "test" :  "is_family", "subject" : "other", "value" :  "snowgolem"},
                  { "test" :  "is_family", "subject" : "other", "value" :  "irongolem"}
                ]
            },
            "max_dist": 8
          }
        ]
      },
      "minecraft:behavior.hurt_by_target": {
        "priority": 1,
        "alert_same_type": true
      },
      "minecraft:physics": {
      },
      "minecraft:pushable": {
        "is_pushable": true,
        "is_pushable_by_piston": true
      },
      "minecraft:conditional_bandwidth_optimization": {
      },
      "minecraft:block_climber": {
      }
    },
    "events": {
      "minecraft:entity_spawned": {
        "remove": {
        },
        "add": {
          "component_groups": [
            "minecraft:silverfish_calm"
          ]
        }
      },
      "minecraft:become_angry": {
        "remove": {
          "minecraft:silverfish_calm": { }
        },
        "add": {
          "component_groups": [
            "minecraft:silverfish_angry"
          ]
        }
      },
      "minecraft:on_calm": {
        "remove": {
          "minecraft:silverfish_angry": { }
        },
        "add": {
          "component_groups": [
            "minecraft:silverfish_calm"
          ]
        }
      }
    }
  }
}