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RedMew/map_gen/Diggy/Feature/StartingZone.lua

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--[[-- info
Provides the ability to create a pre-configured starting zone.
]]
-- dependencies
local Event = require 'utils.event'
local Token = require 'utils.global_token'
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local Template = require 'map_gen.Diggy.Template'
local Debug = require 'map_gen.Diggy.Debug'
local DiggyCaveCollapse = require 'map_gen.Diggy.Feature.DiggyCaveCollapse'
local insert = table.insert
local random = math.random
local sqrt = math.sqrt
local floor = math.floor
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-- this
local StartingZone = {}
--[[--
Registers all event handlers.
]]
function StartingZone.register(config)
local callback_token
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local starting_zone_size = config.starting_size
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local function on_chunk_generated(event)
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local start_point_area = {{-0.9, -0.9}, {0.9, 0.9}}
local start_point_cleanup = {{-0.9, -0.9}, {1.9, 1.9}}
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local surface = event.surface
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-- hack to figure out whether the important chunks are generated via Diggy.Feature.RefreshMap.
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if (4 ~= surface.count_tiles_filtered({start_point_area, name = 'lab-dark-1'})) then
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return
end
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-- ensure a clean starting point
for _, entity in pairs(surface.find_entities_filtered({area = start_point_cleanup, type = 'resource'})) do
entity.destroy()
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end
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local tiles = {}
local rocks = {}
local dirt_range = floor(starting_zone_size / 2)
local rock_range = starting_zone_size - 2
local stress_hack = floor(starting_zone_size / 10)
for x = -starting_zone_size, starting_zone_size do
for y = -starting_zone_size, starting_zone_size do
local distance = floor(sqrt(x * x + y * y))
if (distance < starting_zone_size) then
if (distance > dirt_range) then
insert(tiles, {name = 'dirt-' .. random(1, 7), position = {x = x, y = y}})
else
insert(tiles, {name = 'stone-path', position = {x = x, y = y}})
end
if (distance > rock_range) then
insert(rocks, {name = 'sand-rock-big', position = {x = x, y = y}})
end
-- hack to avoid starting area from collapsing
if (distance > stress_hack) then
DiggyCaveCollapse.stress_map_add(surface, {x = x, y = y}, -0.5)
end
end
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end
end
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Template.insert(event.surface, tiles, rocks)
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Event.remove_removable(defines.events.on_chunk_generated, callback_token)
end
callback_token = Token.register(on_chunk_generated)
Event.add_removable(defines.events.on_chunk_generated, callback_token)
end
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function StartingZone.on_init()
local surface = game.surfaces.nauvis
surface.daytime = 0.5
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surface.freeze_daytime = 1
-- base factorio = pollution_factor = 0.000015
game.map_settings.enemy_evolution.pollution_factor = 0.000002
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end
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return StartingZone