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41 lines
1.1 KiB
Lua
41 lines
1.1 KiB
Lua
local Perlin = require 'map_gen.shared.perlin_noise'
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local seed_provider = require 'map_gen.maps.danger_ores.modules.seed_provider'
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local b = require 'map_gen.shared.builders'
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local perlin_noise = Perlin.noise
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return function(config)
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local scale = config.water_scale or 1 / 96
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local water_threshold = config.water_threshold or 0.5
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local deepwater_threshold = config.deepwater_threshold or 0.55
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local scale_function
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if type(scale) == 'function' then
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scale_function = scale
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else
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scale_function = function()
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return scale
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end
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end
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local no_water_shape = config.no_water_shape or b.circle(96)
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local seed = config.water_seed or seed_provider()
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return function(x, y, world)
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if no_water_shape(x, y, world) then
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return false
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end
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local s = scale_function(x, y, world)
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local water_noise = perlin_noise(x * s, y * s, seed)
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if water_noise >= deepwater_threshold then
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return 'deepwater'
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elseif water_noise >= water_threshold then
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return 'water'
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end
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return false
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end
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end
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