Add ready rocket silo with custom GUI

lignumis/scripts/init-existing.lua

@@ -0,0 +1,19 @@
+local InitExisting = {}
+
+-- Initialization for existing games
+-- Don't send players to Lignumis but instead print a warning
+
+InitExisting.on_init = function()
+    if game.tick == 0 then return end
+
+    storage.init = {}
+    for _, player in pairs(game.players) do
+        storage.init[player.index] = true
+        if player.physical_surface.name == "nauvis" then
+            storage.nauvis_visited = true
+        end
+    end
+    game.print { "", { "lignumis.start-new-game" } }
+end
+
+return InitExisting