How to edit tech trees

[askingaquestion]

Hello,

I'd appreciate it if anyone can offer some guidance. I've searched the internet, but couldn't find anything to help me.

What I'm trying to do is supposedly simple. I'm not a modder nor a programmer. I have the SA mod for Factorio, and I would like to tweak it so that the electricity research is a little further down, maybe needs additional science packs. I've opened the technology file in the mod folder and edited a few parts, but apparently what I'm trying to do is harder that I thought.

Is there a guide on how to precisely edit the tech tree; change how tech parts are related to each other?

Thanks

[jamiechi1]

Here is some code that shows how to remove items from tech research. You can add some into the structure as well.

Code: Select all

-- RemoveBlackScience
data.raw.technology['exoskeleton-equipment'].unit.ingredients = 
{
  {"automation-science-pack", 1},
  {"logistic-science-pack", 1}
  -- {"military-science-pack", 1}
}

   data.raw.technology["engine"].prerequisites =
   {
      "automation-science-pack"
   }
   data.raw.technology["engine"].unit.ingredients =
   {
      {"automation-science-pack", 1},
   }

-- and one of my favourites: 
-- force belt immunity on
data.raw['character']['character'].has_belt_immunity = true

data.raw.technology["belt-immunity-equipment"].hidden = true
data.raw.technology["belt-immunity-equipment"].visible_when_disabled = false

data.raw.recipe["belt-immunity-equipment"].hidden = true
data.raw.recipe["belt-immunity-equipment"].hidden_from_player_crafting = true

table.insert(data.raw.item["belt-immunity-equipment"], flags)
data.raw.item["belt-immunity-equipment"].hidden = true