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Fix belt (backup) detection #5

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Fix belt (backup) detection #5

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deff5ac
Harden belt detection code
Laar Jan 10, 2024
f69f4eb
Rework backup external belt tier tech generation
Laar Jan 10, 2024
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49 changes: 33 additions & 16 deletions prototypes/technology/belts.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -4,12 +4,22 @@ for _, belt in pairs(data.raw["transport-belt"]) do
belt_names[belt.name] = true
end

print(serpent.line(belt_names))
-- Create an ordering of the belts by speed
-- to be used in the backup code
local belts_by_speed = {}
for belt_name, _ in pairs(belt_names) do
belts_by_speed[#belts_by_speed+1] = belt_name
end
local ordering = function (b1, b2)
return data.raw["transport-belt"][b1].speed < data.raw["transport-belt"][b2].speed
end
table.sort(belts_by_speed, ordering)


for _, tech in pairs(data.raw["technology"]) do
if tech.effects then
for _, effect in pairs(tech.effects) do
if effect.type == "unlock-recipe" then
if effect.type == "unlock-recipe" and data.raw.recipe[effect.recipe] then
local has_recipe = ""
-- the single recipe result is a string and it is the name of the belt
local result_name = data.raw.recipe[effect.recipe].result
Expand Down Expand Up @@ -65,29 +75,36 @@ for _, tech in pairs(data.raw["technology"]) do
end


-- for the remaining techs, we need to add the belts as level 0 techs, EXCEPT for the slowest one
local slowest_belt = nil
-- For belt types where we do not have a natural parent technology we
-- create a separate level 0 technology. Two special cases:
-- 1. We start with external connections using the slowest belt tech,
-- so no technology upgrading to this level is added.
-- 2. For the upgrade to the first tier there is no prerequisite, as we
-- do not know about a technology unlocking the belt itself, nor is
-- there a technology that upgrades the external connection to the
-- previous belt tier (as that is the starting tier)
for belt_name, _ in pairs(belt_names) do
if slowest_belt == nil then
slowest_belt = belt_name
else
if data.raw["transport-belt"][belt_name].speed < data.raw["transport-belt"][belt_name].speed then
slowest_belt = belt_name
end
-- Find speed index
local index = nil
for i, v in ipairs(belts_by_speed) do
if v == belt_name then index = i end
end
end

-- now for the remaining belts, add them as level 0 techs
for belt_name in pairs(belt_names) do
if belt_name ~= slowest_belt then
if index > 1 then -- Skip slowest belt
log("Adding tech for " .. belt_name)
prerequisites = {}
if index > 2 then
-- There is a tech upgrading to 1 tier lower belts
local prev_belt_name = belts_by_speed[index-1]
prerequisites = {"f2pl-belt-" .. prev_belt_name}
end
local item = data.raw.item[belt_name]
data:extend { {
type = "technology",
name = "f2pl-belt-" .. belt_name,
icon = item.icon,
icon_size = item.icon_size,
icon_mipmaps = item.icon_mipmaps,
prerequisites = { "f2pl-belt-" .. slowest_belt },
prerequisites = prerequisites,
unit = {
count = 100,
ingredients = { { "automation-science-pack", 1 } },
Expand Down