38 lines
1.6 KiB
Markdown
38 lines
1.6 KiB
Markdown
# Tooltip API
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This API explains how to handle the extended item tooltips (`description` field).
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## Fields
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Add these to the item definition.
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* `_tt_ignore`: If `true`, the `description` of this item won't be altered at all
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* `_tt_help`: Custom help text
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Once this mod had overwritten the `description` field of an item was overwritten, it will save the original (unaltered) `description` in the `_tt_original_description` field.
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## `tt.register_snippet(func)`
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Register a custom snippet function.
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`func` is a function of the form `func(itemstring, tool_capabilities, itemstack)`.
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It will be called for (nearly) every itemstring at startup and when `tt.reload_itemstack_description` is called for an itemstack.
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The `itemstack` parameter is only present when the snippet is called via `tt.reload_itemstack_description` and contains the itemstack.
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Returns: Two values, the first one is required.
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1st return value: A string you want to append to this item or `nil` if nothing shall be appended.
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2nd return value: If nil, `tt` will take of the text color. If a ColorString in `"#RRGGBB"` format, entire text is colorized in this color. Return `false` to force `tt` to not apply text any colorization (useful if you want to call `minetest.colorize` yourself.
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Example:
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```
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tt.register_snippet(function(itemstring)
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if minetest.get_item_group(itemstring, "magic") == 1 then
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return "This item is magic"
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end
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end)
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```
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## `tt.reload_itemstack_description(itemstack)`
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This function will dynamically reload the itemstack description,
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it becomes handy when `ìtemstack:get_meta():set_tool_capabilities(...)` was used
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or if some snippets are based on metadata.
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