I know this question has been asked before, but I haven't been able to find a useful/confirmed answer.

 

1. When a recipe is added to the Minecraft recipe book, how do you make it go to a particular tab?  e.g. at present, all my modded tool recipes go into the miscellaneous tab instead of the tools/weapons tab. I'd like them to go into the tools/weapons tab.

2. Is it possible to create a custom tab in the recipe book for one's mod items? If so, how?

I think you mean : setCreativeTab( CreativeTabs.MATERIALS ); ?

About create a tab i know it's possible, i've seen a tuto to do it, but idk how to proceed, if i found the link i post it here.

1 hour ago, Kporal said:

I think you mean : setCreativeTab( CreativeTabs.MATERIALS ); ?

Creative Tab != Recipe Tab

The creative tab is where the item appears in the creative mode inventory and has dick to do with the recipe book.

Draco18s is correct. I am referring to the shiny new vanilla Recipe Book, introduced in 1.12 or so.

For your first question, I found that the tabs grab their recipes from a few of the creative tabs.

Spoiler

Class: GuiRecipeBook

private final List<GuiButtonRecipeTab> recipeTabs = Lists.newArrayList(new GuiButtonRecipeTab(0, CreativeTabs.SEARCH), new GuiButtonRecipeTab(0, CreativeTabs.TOOLS), new GuiButtonRecipeTab(0, CreativeTabs.BUILDING_BLOCKS), new GuiButtonRecipeTab(0, CreativeTabs.MISC), new GuiButtonRecipeTab(0, CreativeTabs.REDSTONE));
 

But after a bit more digging I found that anything in the combat creative tab is also shoved into the tools recipe tab and anything other than building blocks or redstone is shoved into the MISC tab.

Spoiler

Class: RecipeBookClient

private static CreativeTabs getItemStackTab(ItemStack p_194084_0_)
    {
        CreativeTabs creativetabs = p_194084_0_.getItem().getCreativeTab();

        if (creativetabs != CreativeTabs.BUILDING_BLOCKS && creativetabs != CreativeTabs.TOOLS && creativetabs != CreativeTabs.REDSTONE)
        {
            return creativetabs == CreativeTabs.COMBAT ? CreativeTabs.TOOLS : CreativeTabs.MISC;
        }
        else
        {
            return creativetabs;
        }
    }

so if you want your weapons to go into the tools recipe tab, you would have to assign them to the tools creative tab or the combat creative tab.

 

As for your second question, there does not seem to be a way to add a new tab to the recipe book. the tab list is final and there does not even seem to be a system to stop tabs from rendering off of the screen if there are enough of them, as the tabs are simply set to be under each other.

Spoiler

class: GuiRecipeBook

private void updateTabs()
    {
        int i = (this.width - 147) / 2 - this.xOffset - 30;
        int j = (this.height - 166) / 2 + 3;
        int k = 27;
        int l = 0;

        for (GuiButtonRecipeTab guibuttonrecipetab : this.recipeTabs)
        {
            CreativeTabs creativetabs = guibuttonrecipetab.getCategory();

            if (creativetabs == CreativeTabs.SEARCH)
            {
                guibuttonrecipetab.visible = true;
                guibuttonrecipetab.setPosition(i, j + 27 * l++);
            }
            else if (guibuttonrecipetab.updateVisibility())
            {
                guibuttonrecipetab.setPosition(i, j + 27 * l++);
                guibuttonrecipetab.startAnimation(this.mc);
            }
        }
    }

 

1 hour ago, Rijento said:

As for your second question, there does not seem to be a way to add a new tab to the recipe book. the tab list is final and there does not even seem to be a system to stop tabs from rendering off of the screen if there are enough of them, as the tabs are simply set to be under each other.

  Reveal hidden contents

class: GuiRecipeBook

private void updateTabs()
    {
        int i = (this.width - 147) / 2 - this.xOffset - 30;
        int j = (this.height - 166) / 2 + 3;
        int k = 27;
        int l = 0;

        for (GuiButtonRecipeTab guibuttonrecipetab : this.recipeTabs)
        {
            CreativeTabs creativetabs = guibuttonrecipetab.getCategory();

            if (creativetabs == CreativeTabs.SEARCH)
            {
                guibuttonrecipetab.visible = true;
                guibuttonrecipetab.setPosition(i, j + 27 * l++);
            }
            else if (guibuttonrecipetab.updateVisibility())
            {
                guibuttonrecipetab.setPosition(i, j + 27 * l++);
                guibuttonrecipetab.startAnimation(this.mc);
            }
        }
    }

 

We should probably get Forge to find a way to adjust that.

20 hours ago, Draco18s said:

We should probably get Forge to find a way to adjust that.

I agree. I doubt that I am the only modder who likes their mod items neatly organized, whether it's in custom creative tabs or this new recipe book thing.