{
  "format_version": "1.26.10",
  "particle_effect": {
    "description": {
      "identifier": "minecraft:creaking_crumble_head",
      "basic_render_parameters": {
        "material": "particles_alpha",
        "texture": "textures/blocks/creaking_heart_side_active"
      }
    },
    "components": {
      "minecraft:emitter_lifetime_once": {},
      "minecraft:emitter_rate_instant": {
        "num_particles": 20
      },
      "minecraft:emitter_shape_box": {
        "half_dimensions": [
          0.45,
          1.35,
          0.45
        ],
        "direction": [
          {
            "expression": "Math.random(-1.0, 1.0)",
            "version": 12
          },
          1,
          {
            "expression": "Math.random(-1.0, 1.0)",
            "version": 12
          }
        ]
      },
      "minecraft:particle_appearance_billboard": {
        "size": [
          {
            "expression": "variable.particle_random_1 * 0.0375 + 0.0375",
            "version": 12
          },
          {
            "expression": "variable.particle_random_2 * 0.0375 + 0.0375",
            "version": 12
          }
        ],
        "facing_camera_mode": "lookat_xyz",
        "direction": {
          "mode": "derive_from_velocity",
          "custom_direction": [
            0,
            0,
            0
          ],
          "min_speed_threshold": 0.1
        },
        "uv": {
          "texture_width": 16,
          "texture_height": 16,
          "uv": [
            {
              "expression": "Math.round(variable.particle_random_1 * 12.0)",
              "version": 12
            },
            {
              "expression": "Math.round(variable.particle_random_2 * 12.0)",
              "version": 12
            }
          ],
          "uv_size": [
            4,
            4
          ]
        }
      },
      "minecraft:particle_appearance_lighting": {},
      "minecraft:particle_initial_speed": {
        "expression": "Math.random(0.0, 1.0)",
        "version": 12
      },
      "minecraft:particle_lifetime_expression": {
        "max_lifetime": {
          "expression": "0.2f / (Math.random(0.0, 1.0) * 0.9f + 0.1f)",
          "version": 12
        }
      },
      "minecraft:particle_motion_collision": {
        "collision_drag": 5,
        "coefficient_of_restitution": 0.1,
        "collision_radius": 0.1,
        "events": []
      },
      "minecraft:particle_motion_dynamic": {
        "linear_acceleration": [
          0,
          -9.8,
          0
        ],
        "linear_drag_coefficient": 0.5
      }
    }
  }
}