2018-11-18 18:12:00 +02:00
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--[[-- info
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Provides the ability to spawn random ores all over the place.
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]]
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-- dependencies
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local Event = require 'utils.event'
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local Debug = require 'map_gen.Diggy.Debug'
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local Template = require 'map_gen.Diggy.Template'
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local Perlin = require 'map_gen.shared.perlin_noise'
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local Simplex = require 'map_gen.shared.simplex_noise'
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local random = math.random
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local sqrt = math.sqrt
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local ceil = math.ceil
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local floor = math.floor
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-- this
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local ScatteredResources = {}
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local function get_name_by_weight(collection, sum)
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local pre_calculated = random()
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local current = 0
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local target = pre_calculated * sum
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for name, weight in pairs(collection) do
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current = current + weight
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if (current >= target) then
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return name
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end
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end
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Debug.print('Current \'' .. current .. '\' should be higher or equal to random \'' .. target .. '\'')
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end
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--[[--
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Registers all event handlers.
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]]
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function ScatteredResources.register(config)
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-- source of noise for resource generation
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-- index determines offset
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-- '-1' is reserved for cluster mode
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-- compound clusters use as many indexes as needed > 1
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local base_seed
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local function seeded_noise(surface, x, y, index, sources)
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base_seed = base_seed or surface.map_gen_settings.seed + surface.index + 4000
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local noise = 0
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for _, settings in ipairs(sources) do
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settings.type = settings.type or 'perlin'
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settings.offset = settings.offset or 0
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if settings.type == 'zero' then
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noise = noise + 0
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elseif settings.type == 'one' then
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noise = noise + settings.weight * 1
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elseif settings.type == 'perlin' then
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noise = noise + settings.weight * Perlin.noise(x/settings.variance, y/settings.variance,
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base_seed + 2000*index + settings.offset)
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elseif settings.type == 'simplex' then
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noise = noise + settings.weight * Simplex.d2(x/settings.variance, y/settings.variance,
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base_seed + 2000*index + settings.offset)
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else
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Debug.print('noise type \'' .. settings.type .. '\' not recognized')
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end
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end
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return noise
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end
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-- global config values
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local resource_richness_weights = config.resource_richness_weights
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local resource_richness_weights_sum = 0
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for _, weight in pairs(resource_richness_weights) do
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resource_richness_weights_sum = resource_richness_weights_sum + weight
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end
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local resource_richness_values = config.resource_richness_values
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local resource_type_scalar = config.resource_type_scalar
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-- scattered config values
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local s_mode = config.scattered_mode
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local s_dist_mod = config.scattered_distance_probability_modifier
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local s_min_prob = config.scattered_min_probability
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local s_max_prob = config.scattered_max_probability
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local s_dist_richness = config.scattered_distance_richness_modifier
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local s_cluster_prob = config.scattered_cluster_probability_multiplier
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local s_cluster_mult = config.scattered_cluster_yield_multiplier
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local s_resource_weights = config.scattered_resource_weights
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local s_resource_weights_sum = 0
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for _, weight in pairs(s_resource_weights) do
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s_resource_weights_sum = s_resource_weights_sum + weight
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end
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local s_min_dist = config.scattered_minimum_resource_distance
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-- cluster config values
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local cluster_mode = config.cluster_mode
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-- compound cluster spawning
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local c_mode = config.cluster_mode
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local c_clusters = require(config.cluster_file_location)
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if ('table' ~= type(c_clusters)) then
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error('cluster_file_location invalid')
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end
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local c_count = 0
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for _, cluster in ipairs(c_clusters) do
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c_count = c_count + 1
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cluster.weights_sum = 0
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-- ensure the cluster colors are valid otherwise it fails silently
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-- and breaks things elsewhere
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if cluster.color then
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local c = cluster.color
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if (not c.r) or (not c.g) or (not c.b) then
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cluster.color = nil
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elseif c.r < 0 or c.r > 1 or c.g < 0 or c.g > 1 or c.b < 0 or c.b > 1 then
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cluster.color = nil
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end
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end
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for _, weight in pairs(cluster.weights) do
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cluster.weights_sum = cluster.weights_sum + weight
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end
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end
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local function spawn_cluster_resource(surface, x, y, cluster_index, cluster)
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local distance = sqrt(x * x + y * y)
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local resource_name = get_name_by_weight(cluster.weights, cluster.weights_sum)
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if resource_name == 'skip' then
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return false
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end
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if cluster.distances[resource_name] then
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if distance < cluster.distances[resource_name] then
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return false
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end
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end
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local range = resource_richness_values[get_name_by_weight(resource_richness_weights, resource_richness_weights_sum)]
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local amount = random(range[1], range[2])
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amount = amount * (1 + ((distance / cluster.distance_richness) * 0.01))
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amount = amount * cluster.yield
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if resource_type_scalar[resource_name] then
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amount = amount * resource_type_scalar[resource_name]
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end
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Template.resources(surface, {{name = resource_name, position = {x = x, y = y}, amount = ceil(amount)}})
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return true
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end
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-- event registration
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Event.add(Template.events.on_void_removed, function (event)
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local position = event.position
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local x = position.x
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local y = position.y
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local surface = event.surface
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local distance = config.distance(x, y)
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if c_mode then
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for index,cluster in ipairs(c_clusters) do
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if distance >= cluster.min_distance and cluster.noise_settings.type ~= 'skip' then
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if cluster.noise_settings.type == "connected_tendril" then
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local noise = seeded_noise(surface, x, y, index, cluster.noise_settings.sources)
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if -1 * cluster.noise_settings.threshold < noise and noise < cluster.noise_settings.threshold then
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if spawn_cluster_resource(surface, x, y, index, cluster) then
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return -- resource spawned
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end
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end
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elseif cluster.noise_settings.type == "fragmented_tendril" then
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local noise1 = seeded_noise(surface, x, y, index, cluster.noise_settings.sources)
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local noise2 = seeded_noise(surface, x, y, index, cluster.noise_settings.discriminator)
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if -1 * cluster.noise_settings.threshold < noise1 and noise1 < cluster.noise_settings.threshold
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and -1 * cluster.noise_settings.discriminator_threshold < noise2
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and noise2 < cluster.noise_settings.discriminator_threshold then
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if spawn_cluster_resource(surface, x, y, index, cluster) then
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return -- resource spawned
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end
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end
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else
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local noise = seeded_noise(surface, x, y, index, cluster.noise_settings.sources)
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if noise >= cluster.noise_settings.threshold then
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if spawn_cluster_resource(surface, x, y, index, cluster) then
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return -- resource spawned
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end
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end
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end
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end
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end
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end
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if s_mode then
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local probability = math.min(s_max_prob, s_min_prob + 0.01 * (distance / s_dist_mod))
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if (cluster_mode) then
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probability = probability * s_cluster_prob
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end
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if (probability > random()) then
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-- spawn single resource point for scatter mode
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local resource_name = get_name_by_weight(s_resource_weights, s_resource_weights_sum)
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if resource_name == 'skip' or s_min_dist[resource_name] > distance then
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return
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end
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local range = resource_richness_values[get_name_by_weight(resource_richness_weights, resource_richness_weights_sum)]
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local amount = random(range[1], range[2])
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amount = amount * (1 + ((distance / s_dist_richness) * 0.01))
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if resource_type_scalar[resource_name] then
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amount = amount * resource_type_scalar[resource_name]
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end
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if (cluster_mode) then
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amount = amount * s_cluster_mult
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end
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Template.resources(surface, {{name = resource_name, position={x=x,y=y}, amount = ceil(amount)}})
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end
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end
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end)
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if (config.display_ore_clusters) then
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local color = {}
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Event.add(defines.events.on_chunk_generated, function (event)
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local surface = event.surface
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local area = event.area
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for x = area.left_top.x, area.left_top.x + 31 do
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for y = area.left_top.y, area.left_top.y + 31 do
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for index,cluster in ipairs(c_clusters) do
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if cluster.noise_settings.type == "connected_tendril" then
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local noise = seeded_noise(surface, x, y, index, cluster.noise_settings.sources)
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if -1 * cluster.noise_settings.threshold < noise and noise < cluster.noise_settings.threshold then
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color[index] = color[index] or cluster.color or {r=random(), g=random(), b=random()}
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Debug.print_colored_grid_value('o' .. index, surface, {x = x, y = y}, nil, nil, true, 0, color[index])
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end
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elseif cluster.noise_settings.type == "fragmented_tendril" then
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local noise1 = seeded_noise(surface, x, y, index, cluster.noise_settings.sources)
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local noise2 = seeded_noise(surface, x, y, index, cluster.noise_settings.discriminator)
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if -1 * cluster.noise_settings.threshold < noise1 and noise1 < cluster.noise_settings.threshold
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and -1 * cluster.noise_settings.discriminator_threshold < noise2
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and noise2 < cluster.noise_settings.discriminator_threshold then
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color[index] = color[index] or cluster.color or {r=random(), g=random(), b=random()}
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Debug.print_colored_grid_value('o' .. index, surface, {x = x, y = y}, nil, nil, true, 0, color[index])
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end
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elseif cluster.noise_settings.type ~= 'skip' then
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local noise = seeded_noise(surface, x, y, index, cluster.noise_settings.sources)
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if noise >= cluster.noise_settings.threshold then
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color[index] = color[index] or cluster.color or {r=random(), g=random(), b=random()}
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Debug.print_colored_grid_value('o' .. index, surface, {x = x, y = y}, nil, nil, true, 0, color[index])
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end
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end
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end
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end
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end
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end)
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end
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end
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function ScatteredResources.get_extra_map_info(config)
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return [[Scattered Resources, resources are everywhere!
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Scans of the mine have shown greater amounts of resources to be deeper in the mine]]
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end
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return ScatteredResources
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