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VoxeLibre/mods/HELP/mcl_craftguide/API.md

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## API
### Custom recipes
#### Registering a custom crafting type (example)
```Lua
mcl_craftguide.register_craft_type("digging", {
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description = "Digging",
icon = "default_tool_steelpick.png",
})
```
#### Registering a custom crafting recipe (example)
```Lua
mcl_craftguide.register_craft({
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type = "digging",
width = 1,
output = "default:cobble 2",
items = {"default:stone"},
})
```
---
### Recipe filters
Recipe filters can be used to filter the recipes shown to players. Progressive
mode is implemented as a recipe filter.
#### `mcl_craftguide.add_recipe_filter(name, function(recipes, player))`
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Adds a recipe filter with the given name. The filter function should return the
recipes to be displayed, given the available recipes and an `ObjectRef` to the
user. Each recipe is a table of the form returned by
`minetest.get_craft_recipe`.
Example function to hide recipes for items from a mod called "secretstuff":
```lua
mcl_craftguide.add_recipe_filter("Hide secretstuff", function(recipes)
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local filtered = {}
for _, recipe in ipairs(recipes) do
if recipe.output:sub(1,12) ~= "secretstuff:" then
filtered[#filtered + 1] = recipe
end
end
return filtered
end)
```
#### `mcl_craftguide.remove_recipe_filter(name)`
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Removes the recipe filter with the given name.
#### `mcl_craftguide.set_recipe_filter(name, function(recipe, player))`
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Removes all recipe filters and adds a new one.
#### `mcl_craftguide.get_recipe_filters()`
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Returns a map of recipe filters, indexed by name.
---
### Search filters
Search filters are used to perform specific searches inside the search field.
They can be used like so: `<optional name>+<filter name>=<value1>,<value2>,<...>`
Examples:
- `+groups=cracky,crumbly`: search for groups `cracky` and `crumbly` in all items.
- `sand+groups=falling_node`: search for group `falling_node` for items which contain `sand` in their names.
Notes:
- If `optional name` is omitted, the search filter will apply to all items, without pre-filtering.
- Filters can be combined.
- The `groups` filter is currently implemented by default.
#### `mcl_craftguide.add_search_filter(name, function(item, values))`
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Adds a search filter with the given name.
The search function should return a boolean value (whether the given item should be listed or not).
Example function to show items which contain at least a recipe of given width(s):
```lua
mcl_craftguide.add_search_filter("widths", function(item, widths)
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local has_width
local recipes = recipes_cache[item]
if recipes then
for i = 1, #recipes do
local recipe_width = recipes[i].width
for j = 1, #widths do
local width = tonumber(widths[j])
if width == recipe_width then
has_width = true
break
end
end
end
end
return has_width
end)
```
#### `mcl_craftguide.remove_search_filter(name)`
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Removes the search filter with the given name.
#### `mcl_craftguide.get_search_filters()`
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Returns a map of search filters, indexed by name.
---
### Custom formspec elements
#### `mcl_craftguide.add_formspec_element(name, def)`
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Adds a formspec element to the current formspec.
Supported types: `box`, `label`, `image`, `button`, `tooltip`, `item_image`, `image_button`, `item_image_button`
Example:
```lua
mcl_craftguide.add_formspec_element("export", {
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type = "button",
element = function(data)
-- Should return a table of parameters according to the formspec element type.
-- Note: for all buttons, the 'name' parameter *must not* be specified!
if data.recipes then
return {
data.iX - 3.7, -- X
sfinv_only and 7.9 or 8, -- Y
1.6, -- W
1, -- H
ESC(S("Export")) -- label
}
end
end,
-- Optional.
action = function(player, data)
-- When the button is pressed.
print("Exported!")
end
})
```
#### `mcl_craftguide.remove_formspec_element(name)`
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Removes the formspec element with the given name.
#### `mcl_craftguide.get_formspec_elements()`
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Returns a map of formspec elements, indexed by name.
---
### Miscellaneous
#### `mcl_craftguide.show(player_name, item, show_usages)`
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Opens the Crafting Guide with the current filter applied.
* `player_name`: string param.