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Builtin/game/item: Add place_param2 nodedef field

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This allows a nodedef to specify a fixed value for param2 to be
used for all normal placements.

There are several uses for this:

- nodes that require param2 to be set to a non-zero value for
  internal mod use. E.g. leafdecay could use this to detect that
  leaves are played by players.
- force wallmounted or facedir value at placement at placement

This overrides any player look direction or other on-the-fly
param2 setting during placement.
This commit is contained in:
Auke Kok 2016-05-30 15:07:09 -07:00 committed by paramat
parent 1b8dbf072a
commit 39a9e9874e
2 changed files with 4 additions and 1 deletions
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4
builtin/game/item.lua
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@ -250,7 +250,9 @@ function core.item_place_node(itemstack, placer, pointed_thing, param2)
local newnode = {name = def.name, param1 = 0, param2 = param2} local newnode = {name = def.name, param1 = 0, param2 = param2}
-- Calculate direction for wall mounted stuff like torches and signs -- Calculate direction for wall mounted stuff like torches and signs
if def.paramtype2 == 'wallmounted' and not param2 then if def.place_param2 ~= nil then
newnode.param2 = def.place_param2
elseif def.paramtype2 == 'wallmounted' and not param2 then
local dir = { local dir = {
x = under.x - above.x, x = under.x - above.x,
y = under.y - above.y, y = under.y - above.y,

1
doc/lua_api.txt
View File

@ -3528,6 +3528,7 @@ Definition tables
^ paramtype = "light" allows light to propagate from or through the node with light value ^ paramtype = "light" allows light to propagate from or through the node with light value
^ falling by 1 per node. This line is essential for a light source node to spread its light. ]] ^ falling by 1 per node. This line is essential for a light source node to spread its light. ]]
paramtype2 = "none", -- See "Nodes" paramtype2 = "none", -- See "Nodes"
place_param2 = nil, -- Force value for param2 when player places node
is_ground_content = true, -- If false, the cave generator will not carve through this is_ground_content = true, -- If false, the cave generator will not carve through this
sunlight_propagates = false, -- If true, sunlight will go infinitely through this sunlight_propagates = false, -- If true, sunlight will go infinitely through this
walkable = true, -- If true, objects collide with node walkable = true, -- If true, objects collide with node