Generating craft example images

[Bas080]

Most modders preffer sharing the work they did on the forum. Showing players how to craft stuff is part of that. We often see things like:

s = stick
x = stone
e = empty

Craft
e s e
e x e
e e e

It is nicer to see images as symbols. Imagemagick allows the appending of images.

I wrote a simple bash script to get this project started. It uses imagemagick (sudo apt-get install imagemagick). Here it is:

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convert \( $1 $2 $3 +append \) \
        \( $4 $5 $6 +append \) \
        \( $7 $8 $9 +append \) \
        -background none -append "craft_$10.png"


An example of a result is:


Another would be


I'm looking forward on developing this further so it would automagically generate crafts with the input of an init.lua. Any suggestions on the best way to do this?

[Sokomine]

Sounds very good. I find it very annoying to take those screenshots, and when I take them, they vary in size. Generating them with a script would be much more convenient.

In your sample, the three wooden planks are difficult to distinguish. There ought to be some frame around them. And also an extra slot for the resulting item.

[Kilarin]

I really like this idea! I second Sokomine on putting a small frame between the items and showing the result.

[philipbenr]

Looks amazing to me. This will help immensely for my mods. Thank you Stu!

[Calinou]

Is there a way to upscale the output, without blurring, to have a larger preview ? The ones generated here are quite small.

[Casimir]

Gimp, scale, choose no method, choose a multiple of the pixels, scale.

[Bas080]

Casimir, the goal is to generate them automatically. Not requiring the modder to do this with gimp. Imagemagick allows the scaling of an image. Thus this can be automated.

Sokomine, i agree that the resulting craft image should also be shown. Good idea and a +1.

Anyone with some technical know how on how to interpret the lua file (regex maybe?). Let me know as I am having difficulties on the best way to do this.

EDIT: Sokomine, a grid shouldn't be that hard to add also.

[rubenwardy]

This looks very good. Could you add a small margin between the images?

Anyone with some technical know how on how to interpret the lua file (regex maybe?). Let me know as I am having difficulties on the best way to do this.

regex will be very fiddly. You could instead use a lua interpreter, and make all the minetest.* functions like this:

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function minetest.register_entity(name,data)

end

except the relevant defining functions.

Can you run stand alone Lua like Python? Shouldn't be too hard...

However, this will not work if the mod uses another mod's functions, or adds items depending on whether a mod exists.

Regex would be the most effective way, but will be hard and fiddly to develop.

Maybe do a compromise, and get the user to only paste the register definition, rather than the whole init.lua file.

You could also do this as a Minetest mod.

[Bas080]

Rubenwardy,

You could also do this as a Minetest mod.

Imo that is the neatest solution.

Am suggesting a command "/genrec <name of item/node/tool or a lua regex to select multiple>" which then generates the recipe(s) and the output of them.

Also imagemagick allows the making of 3d boxes. It would be nice to make the nodes 3d boxes in the recipe. Is there a way to check if something is a node or an item? Looking up...

[rubenwardy]

This is quite similar to the craft recipe PHP project.

[Casimir]

Is there a way to check if something is a node or an item?

I think minetest.registered_nodes only returns true for nodes and false for craftitems, while minetest.registered_items returns true for both nodes and craftitems.

[rubenwardy]

What Casimir means to say is craft items and tools are in minetest.registered_items, but not in minetest.registered_nodes.

Nodes are in both.

Also I think the definition has a type parametre. Something like minetest.registered_items["default:stick"].type == "craftitem"

[Casimir]

Yes. When you look into /minetest/builtin/game/item.lua you will see type is "node" for nodes "craft" for craftitems "tool" for tools and "none" for the hand.