bedrock-samples/resource_pack/particles/lab_table_heatblock_dust.json

{
  "format_version": "1.10.0",
  "particle_effect": {
    "description": {
      "identifier": "minecraft:lab_table_heatblock_dust_particle",
      "basic_render_parameters": {
        "material": "particles_alpha",
        "texture": "textures/particle/particles"
      }
    },
    "components": {
      "minecraft:emitter_rate_instant": {
        "num_particles": 1
      },        
      "minecraft:emitter_lifetime_once": {
      },
      "minecraft:emitter_shape_point": {
      },
      "minecraft:particle_lifetime_expression": {
        "max_lifetime": "Math.Random(5, 1)"
      },
      "minecraft:particle_initial_speed": [ "(variable.direction.x * 0.08) + (Math.random(-0.008, 0.008))", "(variable.direction.y * 0.08) + (Math.random(-0.008, 0.008))", "(variable.direction.z * 0.08) + (Math.random(-0.008, 0.008))" ],
      "minecraft:particle_motion_dynamic": {
        "linear_drag_coefficient": 0.5
      },
      "minecraft:particle_appearance_billboard": {
        "size": [ "(0.05 * variable.particle_random_1 + 0.1) * (variable.particle_random_2 * 0.6 + 0.5)", "(0.05 * variable.particle_random_1 + 0.1) * (variable.particle_random_2 * 0.6 + 0.5)" ],
        "facing_camera_mode": "lookat_xyz",
        "uv": {
          "texture_width": 128,
          "texture_height": 128,
          "uv": [ 0, 0 ],
          "uv_size": [ 8, 8 ]
        }
      },
      "minecraft:particle_appearance_tinting": {
        "color": [ "variable.particle_random_3 * 0.1 + 0.2", "variable.particle_random_3 * 0.1 + 0.2", "variable.particle_random_3 * 0.1 + 0.2", 0 ]
      },
      "minecraft:particle_appearance_lighting": {}
    }
  }
}