fix: add final fixes for Lignumis and Alien Biomes compatibility (#7)

refer to: https://discord.com/channels/1327043776715292773/1327045033077248021/1400725705867919371

Added a compatibility fix for alien biomes and lignumis.

Changes:
- added back the vanilla fertile tiles tha Alien Biomes remove to the tile restrictions of trees for manual and world gen spawning and planting of trees.
- retains Lignumis' aesthetics of using the vanilla tiles and Nauvis' Alien Biomes
- able to plant and spawn trees in Lignumis now when Alien Biomes is also enabled

ps. this is the first time I contributed/made a mod for factorio, if there is anything to be improved on the syntaxes and anything do let me know.

Co-authored-by: chromebomb
Reviewed-on: cacklingfiend/lignumis#7
Co-authored-by: chromebomb <chromebomb@noreply.example.org>
Co-committed-by: chromebomb <chromebomb@noreply.example.org>

lignumis/prototypes/compatibility/alien-biomes-final.lua

@@ -0,0 +1,67 @@
+-- Lignumis + Alien Biomes Compatibility - Final Fixes
+-- 
+-- This runs AFTER alien-biomes data-updates.lua to ensure our fixes aren't overridden
+-- Load order: data.lua -> data-updates.lua -> data-final-fixes.lua (THIS FILE)
+
+if not mods["alien-biomes"] then 
+    return 
+end
+
+-- Define Lignumis grass tiles (from mapgen.lua)
+local lignumis_grass_tiles = {
+    "grass-1",
+    "grass-2", 
+    "grass-3",
+    "grass-4",
+    "natural-gold-soil"
+}
+
+-- Fix tree plant for manual planting on Lignumis grass tiles
+local tree_plant = data.raw.plant["tree-plant"]
+if mods["Diversitree"] then
+    tree_plant = data.raw.plant["s6xdvt-fake-tree"]
+end
+
+if tree_plant then
+    for _, tile in pairs(lignumis_grass_tiles) do
+        local already_present = false
+        for _, existing_tile in pairs(tree_plant.autoplace.tile_restriction) do
+            if existing_tile == tile then
+                already_present = true
+                break
+            end
+        end
+        if not already_present then
+            table.insert(tree_plant.autoplace.tile_restriction, tile)
+        end
+    end
+end
+
+-- Fix tree autoplace restrictions for natural tree spawning
+for _, tree in pairs(data.raw.tree) do
+    if tree.autoplace and tree.autoplace.tile_restriction then
+        -- Skip gold stromatolites - they should remain exclusive to natural-gold-soil
+        local is_gold_stromatolite = tree.name and (tree.name:find("stromatolite") or tree.name:find("gold"))
+        
+        if not is_gold_stromatolite then
+            -- Check if Lignumis grass tiles are missing
+            local has_lignumis_tiles = false
+            for _, existing_tile in pairs(tree.autoplace.tile_restriction) do
+                for _, lignumis_tile in pairs(lignumis_grass_tiles) do
+                    if existing_tile == lignumis_tile then
+                        has_lignumis_tiles = true
+                        break
+                    end
+                end
+                if has_lignumis_tiles then break end
+            end
+            
+            -- Add Lignumis grass tiles if missing
+            if not has_lignumis_tiles then
+                for _, tile_name in pairs(lignumis_grass_tiles) do
+                    table.insert(tree.autoplace.tile_restriction, tile_name)
+                end
+            end
+        end
+    end
+end

lignumis/prototypes/compatibility/alien-biomes.lua

@@ -6,6 +6,7 @@ settings["small-rock"] = nil
 settings["tiny-rock"] = nil
 
 -- Fix trees not being plantable on Alien Biomes tiles
+-- Note: Additional tree fixes for Lignumis grass tiles are handled in alien-biomes-final.lua
 local tile_restriction = data.raw["plant"]["tree-plant"].autoplace.tile_restriction
 for _, tile in pairs(alien_biomes.all_tiles()) do
     if tile.tags and (table.contains(tile.tags, "dirt") or table.contains(tile.tags, "grass")) then

lignumis/prototypes/compatibility/final.lua

@@ -1,5 +1,6 @@
 require("aai-loaders-final")
 require("any-planet-start-final")
+require("alien-biomes-final")
 
 if not data.raw.technology["legendary-quality"] then
     table.removeValue(data.raw.technology["quality-assembler"].prerequisites, "legendary-quality")