Wickerbottom's Tech bonus on custom techs?

[RadiantRoma]

Hey everyone, I'm back at modding and want to start off by fixing my previous mods. One of my mods, Cave Content Surfaced, makes a new prototype machine, recipe tab, and science level.

The mod works pretty well as far as I can tell, except for one error, that if you play as Wickerbottom it crashes the game. From what I can tell, the problem occurs because the game tries to apply Wickerbottom's science bonus onto my "CAVESCIENCE", but I don't have some sort of variable set for her bonus and it crashes the game. 

Here is the error in the crash log;

Spoiler

[00:12:28]: [string "scripts/components/builder.lua"]:497: attempt to compare number with nil
LUA ERROR stack traceback:
scripts/components/builder.lua:497 in () ? (Lua) <489-507>
   self =
      exclude_tags = table: 68AD3C38
      buffered_builds = table: 68AD3A30
      recipes = table: 68AD3210
      station_recipes = table: 68AD3788
      bonus_tech_level = 0
      accessible_tech_trees = table: 68AD38A0
      inst = 110516 - wickerbottom (valid:true)
      _ = table: 68AD2F90
   recname = wall_wood_item
   recipe = table: 201DCF48
   has_tech = true
   i = 9
   v = CAVESCIENCE
=(tail call):-1 in ()  (tail) <-1--1>
scripts/widgets/crafting.lua:184 in (method) UpdateRecipes (Lua) <176-219>
   self =
      but_h = 127
      callbacks = table: 19520580
      upconnector = Image - images/hud.xml:craft_sep_h.tex
      valid_recipes = table: 188CC9A0
      scrolldir = true
      inst = 110917 -  (valid:true)
      focus = false
      idx = -1
      but_w = 127
      children = table: 19520800
      max_slots = 10
      focus_flow_args = table: 195205A8
      focus_target = false
      current_slots = 10
      downendcapbg = Image - images/hud.xml:craft_sep.tex
      upbutton = BUTTON
      owner = 110516 - wickerbottom (valid:true)
      downbutton = BUTTON
      can_fade_alpha = true
      upendcapbg = Image - images/hud.xml:craft_sep.tex
      downconnector = Image - images/hud.xml:craft_sep_h.tex
      name = Crafting
      enabled = true
      focus_flow = table: 19520648
      craftslots = CraftSlots
      shown = true
      bg = TileBG
   k = wall_wood_item
   v = table: 201DCF48
scripts/widgets/crafting.lua:47 in (field) _ctor (Lua) <13-48>
   self =
      but_h = 127
      callbacks = table: 19520580
      upconnector = Image - images/hud.xml:craft_sep_h.tex
      valid_recipes = table: 188CC9A0
      scrolldir = true
      inst = 110917 -  (valid:true)
      focus = false
      idx = -1
      but_w = 127
      children = table: 19520800
      max_slots = 10
      focus_flow_args = table: 195205A8
      focus_target = false
      current_slots = 10
      downendcapbg = Image - images/hud.xml:craft_sep.tex
      upbutton = BUTTON
      owner = 110516 - wickerbottom (valid:true)
      downbutton = BUTTON
      can_fade_alpha = true
      upendcapbg = Image - images/hud.xml:craft_sep.tex
      downconnector = Image - images/hud.xml:craft_sep_h.tex
      name = Crafting
      enabled = true
      focus_flow = table: 19520648
      craftslots = CraftSlots
      shown = true
      bg = TileBG
   owner = 110516 - wickerbottom (valid:true)
   num_slots = 10
   but_w = 127
   but_h = 127
scripts/widgets/controllercrafting.lua:19 in (field) _ctor (Lua) <18-52>
   self =
      but_h = 127
      callbacks = table: 19520580
      upconnector = Image - images/hud.xml:craft_sep_h.tex
      valid_recipes = table: 188CC9A0
      scrolldir = true
      inst = 110917 -  (valid:true)
      focus = false
      idx = -1
      but_w = 127
      children = table: 19520800
      max_slots = 10
      focus_flow_args = table: 195205A8
      focus_target = false
      current_slots = 10
      downendcapbg = Image - images/hud.xml:craft_sep.tex
      upbutton = BUTTON
      owner = 110516 - wickerbottom (valid:true)
      downbutton = BUTTON
      can_fade_alpha = true
      upendcapbg = Image - images/hud.xml:craft_sep.tex
      downconnector = Image - images/hud.xml:craft_sep_h.tex
      name = Crafting
      enabled = true
      focus_flow = table: 19520648
      craftslots = CraftSlots
      shown = true
      bg = TileBG
   owner = 110516 - wickerbottom (valid:true)
scripts/class.lua:181 in (upvalue) ControllerCrafting (Lua) <171-184>
   class_tbl = table: 18E35CD0
   arg = nil
   obj = Crafting
scripts/widgets/crafttabs.lua:62 in (field) _ctor (Lua) <44-223>
   self =
      enabled = true
      focus_target = false
      craft_idx_by_tab = table: 19520788
      shown = true
      owner = 110516 - wickerbottom (valid:true)
      can_fade_alpha = true
      focus_flow_args = table: 195203C8
      inst = 110916 -  (valid:true)
      focus 
[00:12:28]: [string "scripts/components/builder.lua"]:497: attempt to compare number with nil
LUA ERROR stack traceback:
    scripts/components/builder.lua:497 in () ? (Lua) <489-507>
    =(tail call):-1 in ()  (tail) <-1--1>
    scripts/widgets/crafting.lua:184 in (method) UpdateRecipes (Lua) <176-219>
    scripts/widgets/crafting.lua:47 in (field) _ctor (Lua) <13-48>
    scripts/widgets/controllercrafting.lua:19 in (field) _ctor (Lua) <18-52>
    scripts/class.lua:181 in (upvalue) ControllerCrafting (Lua) <171-184>
    scripts/widgets/crafttabs.lua:62 in (field) _ctor (Lua) <44-223>
    scripts/class.lua:181 in (upvalue) CraftTabs (Lua) <171-184>
    scripts/widgets/controls.lua:141 in (upvalue) constructor (Lua) <28-158>
    scripts/modutil.lua:147 in (upvalue) constructor (Lua) <146-149>
    scripts/modutil.lua:147 in (upvalue) constructor (Lua) <146-149>
    scripts/modutil.lua:147 in (upvalue) constructor (Lua) <146-149>
    

I also uploaded the modmain and prefab file for the prototyper.

Any help would be greatly appreciated!

help fix me mod.zip

[Serpens]

hm... since 497 line is :
if recipe.level[v] > (self[string.lower(v).."_bonus"] or 0) then
I think that means recipe.level[v] is nil... Cause if the other would be nil, the "or 0" would replace it with 0.

But I don't know why this happens.

Maybe it would be better to implement the new techtree like I did in my quest mod?  with help of the custom_tech_tree.lua ?
There I had no problems.

[DarkXero]

Fix (modmain):

local AllRecipes = GLOBAL.AllRecipes

for k, v in pairs(AllRecipes) do
    v.level.CAVESCIENCE = 0
end

Happens to everybody with a bonus.

Because the recipes are built before modmain edits AVAILABLE_TECH, that level info is missing.