bedrock-samples/resource_pack/entity/creeper.entity.json

{
  "format_version": "1.8.0",
  "minecraft:client_entity": {
    "description": {
      "identifier": "minecraft:creeper",
      "min_engine_version": "1.8.0",
      "materials": {
        "default": "creeper",
        "charged": "charged_creeper"
      },
      "textures": {
        "default": "textures/entity/creeper/creeper",
        "charged": "textures/entity/creeper/creeper_armor"
      },
      "geometry": {
        "default": "geometry.creeper.v1.8",
        "charged": "geometry.creeper.charged.v1.8"
      },
      "spawn_egg": {
        "texture": "spawn_egg",
        "texture_index": 6
      },
      "scripts": {
        "pre_animation": [
          "variable.wobble = Math.sin(query.swell_amount * 5730) * query.swell_amount * 0.01 + 1.0;",
          "variable.swelling_scale1 = (Math.pow(Math.clamp(query.swell_amount, 0.0, 1.0), 4.0) * 0.4 + 1.0) * variable.wobble;",
          "variable.swelling_scale2 = (Math.pow(Math.clamp(query.swell_amount, 0.0, 1.0), 4.0) * 0.1 + 1.0) / variable.wobble;",
          "variable.leg_rot = Math.cos(query.modified_distance_moved * 38.17326) * 80.22 * query.modified_move_speed;",
          "variable.flash = Math.mod(Math.Round(query.swell_amount * 10.0), 2.0);"
        ]
      },
      "animations": {
        "creeper_head": "animation.common.look_at_target",
        "creeper_legs": "animation.creeper.legs",
        "creeper_swelling": "animation.creeper.swelling"
      },
      "animation_controllers": [
        {
          "creeper_head": "controller.animation.creeper.head"
        },
        {
          "creeper_legs": "controller.animation.creeper.legs"
        },
        {
          "creeper_swelling": "controller.animation.creeper.swelling"
        }
      ],
      "render_controllers": [
        "controller.render.creeper",
        "controller.render.creeper_armor"
      ]
    }
  }
}