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Some minor Lua API documentation clarifications (#9461)

See #5854
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Wuzzy2 committed Apr 6, 2020
1 parent 528b162 commit faedde08f96b671078d9d3273da468db3454713c
Showing with 19 additions and 12 deletions.
  1. +19 −12 doc/lua_api.txt
@@ -1010,22 +1010,24 @@ The function of `param2` is determined by `paramtype2` in node definition.
* Values range 0 - 179. The value stored in `param2` is multiplied by two to
get the actual rotation in degrees of the node.
* `paramtype2 = "meshoptions"`
* Only valid for "plantlike" drawtype. The value of `param2` becomes a
bitfield which can be used to change how the client draws plantlike nodes.
* Bits 0, 1 and 2 form a mesh selector.
Currently the following meshes are choosable:
* Only valid for "plantlike" drawtype. `param2` encodes the shape and
optional modifiers of the "plant". `param2` is a bitfield.
* Bits 0 to 2 select the shape.
Use only one of the values below:
* 0 = a "x" shaped plant (ordinary plant)
* 1 = a "+" shaped plant (just rotated 45 degrees)
* 2 = a "*" shaped plant with 3 faces instead of 2
* 3 = a "#" shaped plant with 4 faces instead of 2
* 4 = a "#" shaped plant with 4 faces that lean outwards
* 5-7 are unused and reserved for future meshes.
* Bits 3 through 7 are optional flags that can be combined and give these
effects:
* bit 3 (0x08) - Makes the plant slightly vary placement horizontally
* bit 4 (0x10) - Makes the plant mesh 1.4x larger
* bit 5 (0x20) - Moves each face randomly a small bit down (1/8 max)
* bits 6-7 are reserved for future use.
* Bits 3 to 7 are used to enable any number of optional modifiers.
Just add the corresponding value(s) below to `param2`:
* 8 - Makes the plant slightly vary placement horizontally
* 16 - Makes the plant mesh 1.4x larger
* 32 - Moves each face randomly a small bit down (1/8 max)
* values 64 and 128 (bits 6-7) are reserved for future use.
* Example: `param2 = 0` selects a normal "x" shaped plant
* Example: `param2 = 17` selects a "+" shaped plant, 1.4x larger (1+16)
* `paramtype2 = "color"`
* `param2` tells which color is picked from the palette.
The palette should have 256 pixels.
@@ -2332,8 +2334,8 @@ Elements
* `name` fieldname data is transferred to Lua
* `caption 1`...: name shown on top of tab
* `current_tab`: index of selected tab 1...
* `transparent` (optional): show transparent
* `draw_border` (optional): draw border
* `transparent` (optional): if true, tabs are semi-transparent
* `draw_border` (optional): if true, draw a thin line at tab base

### `tabheader[<X>,<Y>;<H>;<name>;<caption 1>,<caption 2>,...,<caption n>;<current_tab>;<transparent>;<draw_border>]`

@@ -7020,6 +7022,7 @@ Used by `minetest.register_node`.
-- node is deleted from the world or the drops are added. This is
-- generally the result of either the node being dug or an attached node
-- becoming detached.
-- oldmeta is the NodeMetaRef of the oldnode before deletion.
-- drops is a table of ItemStacks, so any metadata to be preserved can
-- be added directly to one or more of the dropped items. See
-- "ItemStackMetaRef".
@@ -7044,10 +7047,14 @@ Used by `minetest.register_node`.

on_punch = function(pos, node, puncher, pointed_thing),
-- default: minetest.node_punch
-- Called when puncher (an ObjectRef) punches the node at pos.
-- By default calls minetest.register_on_punchnode callbacks.

on_rightclick = function(pos, node, clicker, itemstack, pointed_thing),
-- default: nil
-- Called when clicker (an ObjectRef) "rightclicks"
-- ("rightclick" here stands for the placement key) while pointing at
-- the node at pos with 'node' being the node table.
-- itemstack will hold clicker's wielded item.
-- Shall return the leftover itemstack.
-- Note: pointed_thing can be nil, if a mod calls this function.

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