craftguide/API.md
2019-02-21 01:02:59 +01:00

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## API
### Custom recipes
#### Registering a custom crafting type (example)
```Lua
craftguide.register_craft_type("digging", {
description = "Digging",
icon = "default_tool_steelpick.png",
})
```
#### Registering a custom crafting recipe (example)
```Lua
craftguide.register_craft({
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.
#### `craftguide.add_recipe_filter(name, function(recipes, player))`
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
craftguide.add_recipe_filter("Hide secretstuff", function(recipes)
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)
```
#### `craftguide.remove_recipe_filter(name)`
Removes the recipe filter with the given name.
#### `craftguide.set_recipe_filter(name, function(recipe, player))`
Removes all recipe filters and adds a new one.
#### `craftguide.get_recipe_filters()`
Returns a map of recipe filters, indexed by name.
### Custom formspec elements
#### `craftguide.add_formspec_element(name, def)`
Adds a formspec element to the current formspec.
Supported types: `box`, `label`, `image`, `button`, `tooltip`, `item_image`, `image_button`, `item_image_button`
Example:
```lua
craftguide.add_formspec_element("export", {
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
})
```
#### `craftguide.remove_formspec_element(name)`
Removes the formspec element with the given name.
#### `craftguide.get_formspec_elements()`
Returns a map of formspec elements, indexed by name.
### Miscellaneous
#### `craftguide.show(player_name, item, show_usages)`
Opens the Crafting Guide with the current filter applied.
* `player_name`: string param.
* `item`: optional, string param. If set, this item is pre-selected. If the item does not exist or has no recipe, use the player's previous selection. By default, player's previous selection is used
* `show_usages`: optional, boolean param. If true, show item usages.