Factorio version 0.16.51/0.17

worm-autoplace.lua

-- data for 0.16.51, functionality in 0.17 explained in comment below
["big-worm-turret"] = {
      autoplace = {
        control = "enemy-base",
        force = "enemy",
        max_probability = 0.2,
        order = "b[enemy]-b[worm]",
        peaks = {
          {
            influence = 0,
            richness_influence = 40,
            tier_from_start_max_range = 68,
            tier_from_start_optimal = 34,
            tier_from_start_top_property_limit = 34
          },
          {
            influence = -1,
            starting_area_weight_max_range = 2,
            starting_area_weight_optimal = 1,
            starting_area_weight_range = 0
          },
          {
            influence = 0.1,
            noise_layer = "enemy-base",
            noise_octaves_difference = -1.7,
            noise_persistence = 0.5
          },
          {
            influence = 0.2,
            noise_layer = "enemy-base",
            noise_octaves_difference = -1.7,
            noise_persistence = 0.5,
            tier_from_start_max_range = 68,
            tier_from_start_optimal = 34,
            tier_from_start_top_property_limit = 34
          },
          {
            influence = 0.005
          }
        },
        random_probability_penalty = 0.05,
        richness_base = 0,
        richness_multiplier = 1,
        sharpness = 0.4
      },
      build_base_evolution_requirement = 0.5
},
["medium-worm-turret"] = {
      autoplace = {
        control = "enemy-base",
        force = "enemy",
        max_probability = 0.2,
        order = "b[enemy]-b[worm]",
        peaks = {
          {
            influence = 0,
            richness_influence = 40,
            tier_from_start_max_range = 52.399999999999999,
            tier_from_start_optimal = 26.199999999999999,
            tier_from_start_top_property_limit = 26.199999999999999
          },
          {
            influence = -1,
            starting_area_weight_max_range = 2,
            starting_area_weight_optimal = 1,
            starting_area_weight_range = 0
          },
          {
            influence = 0.1,
            noise_layer = "enemy-base",
            noise_octaves_difference = -1.7,
            noise_persistence = 0.5
          },
          {
            influence = 0.2,
            noise_layer = "enemy-base",
            noise_octaves_difference = -1.7,
            noise_persistence = 0.5,
            tier_from_start_max_range = 52.399999999999999,
            tier_from_start_optimal = 26.199999999999999,
            tier_from_start_top_property_limit = 26.199999999999999
          },
          {
            influence = 0.002
          }
        },
        random_probability_penalty = 0.05,
        richness_base = 0,
        richness_multiplier = 1,
        sharpness = 0.4
      },
      build_base_evolution_requirement = 0.3
},
["small-worm-turret"] = {
      autoplace = {
        control = "enemy-base",
        force = "enemy",
        max_probability = 0.2,
        order = "b[enemy]-b[worm]",
        peaks = {
          {
            influence = 0,
            richness_influence = 40,
            tier_from_start_max_range = 42,
            tier_from_start_optimal = 21,
            tier_from_start_top_property_limit = 21
          },
          {
            influence = -1,
            starting_area_weight_max_range = 2,
            starting_area_weight_optimal = 1,
            starting_area_weight_range = 0
          },
          {
            influence = 0.1,
            noise_layer = "enemy-base",
            noise_octaves_difference = -1.7,
            noise_persistence = 0.5
          },
          {
            influence = 0.2,
            noise_layer = "enemy-base",
            noise_octaves_difference = -1.7,
            noise_persistence = 0.5,
            tier_from_start_max_range = 42,
            tier_from_start_optimal = 21,
            tier_from_start_top_property_limit = 21
          },
          {
            influence = 0
          }
        },
        random_probability_penalty = 0.05,
        richness_base = 0,
        richness_multiplier = 1,
        sharpness = 0.4
      }
}

With 0.17, the above autoplace controls are outdated, but the general principle still stands:

• Medium worms need an evolution factor of 0.3 to be spawned during expansion. Big worms need a factor of 0.5 and behemoth worms a factor of 0.9.
• The new autoplace controls use a "distance_factor" for the spawning, this is 0 for the small worm, 2 for the medium worm, 5 for the big worm and 8 for the behemoth worm. Just like in 0.16, this is the only difference between the different tiers.