I mean while game is running.

 

 

My mod has various techs which start as disabled and get discovered so the user may now build things that previously was not possible.

 

How do I remove vanilla recipes?

How do I remove/add new recipes while game is running?

Thanks for your suggestions I will try the custom IRecipe object .

 

I wonder how ModTweaker does it.

Thanks for your suggestions I will try the custom IRecipe object .

 

I wonder how ModTweaker does it.

Mod tweaker reads from a script at runtime and doesn't change dynamically.

How do I remove vanilla recipes?

CraftingManager::getRecipeList

can be modified.

 

Note that of course you need a code-based way to figure out which recipe(s) should be removed. I usually do that by searching for the recipe output matches (i.e. remove all recipes that can make a certain something). The code could look something like this:

 

It is a bit trickier with Crafting if you want to make sure all recipes for an item are removed, you'll need to iterate through them all like this. (Note this is from 1.7.x and is an example of removing a furnace so you should replace that with what works for you but you should get the idea):

 

 

Iterator<IRecipe> iterator = CraftingManager.getInstance().getRecipeList().iterator();

while (iterator.hasNext())
{
    IRecipe recipe = iterator.next();
    if (recipe == null)
     continue;
    ItemStack output = recipe.getRecipeOutput();
    if (output != null && output.itemID == Block.furnaceIdle.blockID)
     iterator.remove();
}

See also:

https://github.com/Draco18s/ReasonableRealism/blob/master/src/main/java/com/draco18s/hardlib/RecipesUtil.java