bedrock-samples/resource_pack/particles/ominous_spawning_particle.json

{
  "format_version": "1.10.0",
  "particle_effect": {
    "description": {
      "identifier": "minecraft:ominous_spawning_particle",
      "basic_render_parameters": {
        "material": "particles_alpha",
        "texture": "textures/particle/ominous_spawning"
      }
    },
    "curves": {
      "variable.shrink": {
        "type": "linear",
        "input": "v.particle_age",
        "horizontal_range": "v.particle_lifetime",
        "nodes": [1, 0]
      },
      "variable.speed": {
        "type": "bezier",
        "input": "v.particle_age",
        "horizontal_range": "v.particle_lifetime",
        "nodes": [1, 2, 2, 2]
      }
    },
    "components": {
      "minecraft:emitter_rate_steady": {
        "spawn_rate": 10,
        "max_particles": 100
      },
      "minecraft:emitter_lifetime_once": {
        "active_time": "variable.lifetime"
      },
      "minecraft:emitter_shape_sphere": {
        "radius": 2,
        "surface_only": true,
        "direction": "inwards"
      },
      "minecraft:particle_lifetime_expression": {
        "max_lifetime": 1
      },
      "minecraft:particle_initial_speed": "2 * variable.speed",
      "minecraft:particle_motion_dynamic": {},
      "minecraft:particle_appearance_billboard": {
        "size": ["1 * variable.shrink", "0.5 * variable.shrink"],
        "facing_camera_mode": "lookat_direction",
        "direction": {
          "mode": "derive_from_velocity"
        }
      },
      "minecraft:particle_appearance_tinting": {
        "color": {
          "interpolant": "v.particle_age / v.particle_lifetime",
          "gradient": {
            "0.0": "#FF45AEFE",
            "1.0": "#FFFFFFFF"
          }
        }
      }
    }
  }
}