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RedMew/map_gen/entities/fluffy_rainbows.lua

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--Author: MewMew / (Threaded by Valansch)
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local perlin = require 'map_gen.shared.perlin_noise'
local Event = require 'utils.event'
local RS = require 'map_gen.shared.redmew_surface'
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--SETTINGS:
local width_modifier = 0.8
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local ore_base_amounts = {
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['iron-ore'] = 700,
['coal'] = 400,
['copper-ore'] = 400,
['stone'] = 400,
['uranium-ore'] = 400
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}
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local function init()
global.perlin_noise_seed = RS.get_surface().map_gen_settings.seed
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-- math.random(1000, 1000000)
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end
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Event.on_init(init)
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local function do_resource(name, x, y, world, noise_terrain, noise_band_high, noise_band_low, seed)
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if noise_terrain > -noise_band_high * width_modifier and noise_terrain <= -noise_band_low * width_modifier then
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local noise_resource_amount_modifier = perlin.noise(((x + seed) / 200), ((y + seed) / 200), 0)
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local resource_amount =
1 +
((ore_base_amounts[name] + (ore_base_amounts[name] * noise_resource_amount_modifier * 0.2)) *
world.amount_distance_multiplicator)
return {name = name, amount = resource_amount}
end
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end
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return function(x, y, world)
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if not world.amount_distance_multiplicator then
local distance = math.sqrt(world.x * world.x + world.y * world.y)
local amount_distance_multiplicator = (((distance + 1) / 75) / 75) + 1
world.amount_distance_multiplicator = amount_distance_multiplicator
end
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--[[ local entities = world.surface.find_entities_filtered {position = {world.x + 0.5, world.y + 0.5}, type = 'resource'}
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for _, e in ipairs(entities) do
if e.name ~= 'crude-oil' then
e.destroy()
end
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end ]]
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local seed = global.perlin_noise_seed
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local noise_terrain_1 = perlin.noise(((x + seed) / 350), ((y + seed) / 350), 0)
local noise_terrain_2 = perlin.noise(((x + seed) / 50), ((y + seed) / 50), 0)
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local noise_terrain = noise_terrain_1 + (noise_terrain_2 * 0.01)
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return do_resource('iron-ore', x, y, world, noise_terrain, 0.11, 0.085, seed) or
do_resource('copper-ore', x, y, world, noise_terrain, 0.085, 0.06, seed) or
do_resource('stone', x, y, world, noise_terrain, 0.06, 0.05, seed) or
do_resource('coal', x, y, world, noise_terrain, 0.05, 0.03, seed) or
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do_resource('uranium-ore', x, y, world, noise_terrain, 0.02, 0.01, seed)
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end