fix surface condition

changelog.txt

@@ -1,6 +1,8 @@
 ---------------------------------------------------------------------------------------------------
 Version: 2.0.9
 Date: 2025-01-01
+  Fixes:
+    - Fix surface condition error in vanilla
   Features:
     - Hot metals mod support
     - Casting for lead expansion bolts

lead-ore.lua

@@ -89,16 +89,12 @@ data:extend({
 -- From 200 to 700 tiles, richness scales linearly down, until
 -- From 700 tiles onward, it's about 1/6th the richness.
 local richness = data.raw.resource["lead-ore"].autoplace.richness_expression  
-log("Lead richness pre")
-log(richness)
 data.raw.resource["lead-ore"].autoplace.richness_expression = richness..[[*
 if(distance_from_nearest_point{x = x, y = y, points = starting_positions} < 200, 1,
   if(distance_from_nearest_point{x = x, y = y, points = starting_positions} < 700,
     100/(distance_from_nearest_point{x = x, y = y, points = starting_positions} - 100), 0.17))
    ]]
 local richness = data.raw.resource["lead-ore"].autoplace.richness_expression  
-log("Lead richness post")
-log(richness)
 --  richness * noise.if_else_chain(
 --      noise.less_than(noise.distance_from(noise.var("x"), noise.var("y"), noise.var("starting_positions")), noise.to_noise_expression(200)), 1,
 --      noise.less_than(noise.distance_from(noise.var("x"), noise.var("y"), noise.var("starting_positions")), noise.to_noise_expression(700)), 

other-entities.lua

@@ -32,12 +32,12 @@ data:extend({
     corpse = "small-remnants",
     open_sound = { filename = "__base__/sound/metallic-chest-open.ogg", volume=0.65 },
     close_sound = { filename = "__base__/sound/metallic-chest-close.ogg", volume = 0.7 },
-    surface_conditions = {
+    surface_conditions = mods["space-age"] and {
       {
         property = "gravity",
         min = 0.1
       }
-    },
+    } or nil,
     resistances =
     {
       {