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49 lines
1.5 KiB
Lua
49 lines
1.5 KiB
Lua
local perlin = require 'map_gen.shared.perlin_noise'
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local Event = require 'utils.event'
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local random_ores = {'iron-ore', 'coal', 'copper-ore', 'stone', 'uranium-ore'}
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local random_dense = {1.6, 0.8, 1, 0.6, 0.5} --ore density reference
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local function run_ores_module_setup()
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local seed = game.surfaces[1].map_gen_settings.seed
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if not global.ores_seed_A then
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global.ores_seed_A = seed
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end
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if not global.ores_seed_B then
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global.ores_seed_B = seed * 2
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end
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end
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Event.on_init(run_ores_module_setup)
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return function(x, y, world)
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local d_sq = world.x * world.x + world.y * world.y
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if d_sq < 9216 then
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return
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end
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local distance_bonus = 100 + 0.4 * d ^ 1.2
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local wiggle = 100 + perlin.noise((x * 0.005), (y * 0.005), global.ores_seed_A + 41) * 60
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local Ores_A = perlin.noise((x * 0.01), (y * 0.01), global.ores_seed_B + 57) * wiggle
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if Ores_A > 35 then --we place ores
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local Ores_B = perlin.noise((x * 0.02), (y * 0.02), global.ores_seed_B + 13) * wiggle
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local a = 5
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--
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if Ores_A < 76 then
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a = math.floor(Ores_A * 0.75 + Ores_B * 0.5) % 4 + 1
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end --if its not super high we place normal ores
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--
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local res_amount = distance_bonus
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res_amount = math.floor(res_amount * random_dense[a])
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--
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return {name = random_ores[a], amount = res_amount}
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elseif Ores_A < -60 then
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if math.random(1, 200) == 1 then
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return {name = 'crude-oil', amount = 5000 + math.floor(distance_bonus) * 500}
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end
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end
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end
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