Make the second planet after Lignumis configurable by other mods

README.md

@@ -105,6 +105,18 @@ Don't touch inputs for labs in this list.
 Lignumis adds wood and steam science packs to all labs' inputs in `data-updates.lua` so modded labs will support them.
 If your modded lab is special and it should not support these science packs, use this list or set the inputs in `data-final-fixes.lua`.
 
+#### Chaning the second planet (a.k.a. transition to Nauvis)
+
+If you want to create a mod that moves Lignumis to another planet, there is a hidden setting for the scripted transition to teleport the player not to Nauvis but to any planet you like.
+This doesn't change any technologies or the location of Lignumis on the map. Make sure you adjust the prototypes as well on your end.
+
+In `settings-updates.lua` add the following to switch to Gleba as the second planet:
+
+```lua
+data.raw["string-setting"]["lignumis-second-planet"].allowed_values = { "gleba" }
+data.raw["string-setting"]["lignumis-second-planet"].default_value = "gleba"
+```
+
 ## Todo
 
 - Fix pipe graphics on desiccation furnace and quality assembler

lignumis/scripts/init-new.lua

@@ -33,7 +33,7 @@ end
 local function init_space_locations()
     local force = game.forces.player
     force.technologies["planet-discovery-lignumis"].researched = true
-    if not force.technologies["planet-discovery-nauvis"].researched then
+    if game.planets["nauvis"] and force.technologies["planet-discovery-nauvis"] and not force.technologies["planet-discovery-nauvis"].researched then
         force.lock_space_location("nauvis")
     end
 end

lignumis/scripts/init.lua

@@ -7,6 +7,8 @@ local Init = {
     events = {}
 }
 
+local target_planet = settings.global["lignumis-second-planet"].value or "nauvis"
+
 
 -- Migrate storage init as it was just a boolean before not supporting multiple players
 local function migrate_0_9_6(event)
@@ -94,7 +96,7 @@ Init.events[defines.events.on_player_changed_surface] = function(event)
 
     if player.controller_type ~= defines.controllers.character then return end
 
-    if player and player.surface.name == "nauvis" then
+    if player and player.surface.name == target_planet then
         storage.nauvis_visited = true
     end
 

lignumis/scripts/to-nauvis.lua

@@ -6,6 +6,7 @@ local ToNauvis = {
     events = {}
 }
 
+local target_planet = settings.global["lignumis-second-planet"].value or "nauvis"
 
 -- Chart the starting area for the player
 local function chart_starting_area(surface, player)
@@ -19,7 +20,7 @@ end
 -- Initialize Nauvis
 local function init_nauvis()
     if storage.nauvis_visited then return end
-    local nauvis = game.planets["nauvis"].create_surface()
+    local nauvis = game.planets[target_planet].create_surface()
     nauvis.request_to_generate_chunks({ 0, 0 }, 3)
     nauvis.force_generate_chunk_requests()
     nauvis.daytime = 0.7
@@ -28,10 +29,10 @@ end
 
 -- Teleport player to Nauvis and show welcome message
 local function teleport_player(player)
-    local nauvis = game.planets["nauvis"].surface
+    local nauvis = game.planets[target_planet].surface
     if player.surface.name == "lignumis" then
         local position = nauvis.find_non_colliding_position("character", { 0, 0 }, 100, 1) or { 0, 0 }
-        player.teleport(position, "nauvis")
+        player.teleport(position, target_planet)
         chart_starting_area(nauvis, player)
         player.print("Oh no, not again. But... Welcome to Nauvis!")
     end
@@ -44,7 +45,7 @@ local function init_freeplay()
     if not remote.interfaces.freeplay then return end
 
     storage.crashed_ship_nauvis = true
-    local nauvis = game.planets["nauvis"].surface
+    local nauvis = game.planets[target_planet].surface
     local ship_items = {
         ["burner-mining-drill"] = 2,
         ["stone-furnace"] = 2,

lignumis/settings.lua

@@ -54,6 +54,14 @@ data:extend({
         setting_type = "startup",
         default_value = false,
         order = "h"
+    },
+    {
+        type = "string-setting",
+        name = "lignumis-second-planet",
+        setting_type = "runtime-global",
+        allowed_values = { "nauvis" },
+        default_value = "nauvis",
+        hidden = true
     }
 })