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Simple decorations: Make 'place_offset_y' usable with simple decorations

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Necessary for placing the base cube of 'plantlike_rooted' drawtype in the
seabed instead of on it.
Useful for placing decorations sunk into, or buried in, the ground.
This commit is contained in:
paramat 2017-10-09 20:13:10 +01:00 • committed by paramat
parent 2cf9014160
commit 9a41a3d0f1
4 changed files with 33 additions and 23 deletions
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29
doc/lua_api.txt
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@ -4814,20 +4814,19 @@ Definition tables
y_min = -31000
y_max = 31000
-- ^ Lower and upper limits for decoration.
-- ^ This parameter refers to the `y` position of the decoration base, so
-- the actual maximum height would be `height_max + size.Y`.
-- ^ These parameters refer to the Y co-ordinate of the 'place_on' node.
spawn_by = "default:water",
-- ^ Node (or list of nodes) that the decoration only spawns next to.
-- ^ Checks two horizontal planes of neighbouring nodes (including diagonal neighbours),
-- ^ one plane at Y = surface and one plane at Y = surface = + 1.
-- ^ one plane level with the 'place_on' node and a plane one node above that.
num_spawn_by = 1,
-- ^ Number of spawn_by nodes that must be surrounding the decoration position to occur.
-- ^ If absent or -1, decorations occur next to any nodes.
flags = "liquid_surface, force_placement",
-- ^ Flags for all decoration types.
-- ^ "liquid_surface": Instead of placement on the highest solid surface
-- ^ in a mapchunk column, placement is on the highest liquid surface.
-- ^ Placement is disabled if solid nodes are found above the liquid surface.
-- ^ "liquid_surface": Instead of placement on the highest solid surface in
-- ^ a mapchunk column, placement is on the highest liquid surface. Placement
-- ^ is disabled if solid nodes are found above the liquid surface.
-- ^ "force_placement": Nodes other than "air" and "ignore" are replaced by the decoration.
----- Simple-type parameters
@ -4835,17 +4834,23 @@ Definition tables
-- ^ The node name used as the decoration.
-- ^ If instead a list of strings, a randomly selected node from the list is placed as the decoration.
height = 1,
-- ^ Number of nodes high the decoration is made.
-- ^ If height_max is not 0, this is the lower bound of the randomly selected height.
-- ^ Decoration height in nodes.
-- ^ If height_max is not 0, this is the lower limit of a randomly selected height.
height_max = 0,
-- ^ Number of nodes the decoration can be at maximum.
-- ^ Upper limit of the randomly selected height.
-- ^ If absent, the parameter 'height' is used as a constant.
param2 = 0,
-- ^ Param2 value of placed decoration node.
-- ^ If param2_max is not 0, this is the lower bound of the randomly selected param2.
-- ^ Param2 value of decoration nodes.
-- ^ If param2_max is not 0, this is the lower limit of a randomly selected param2.
param2_max = 0,
-- ^ Upper bound of the randomly selected param2.
-- ^ Upper limit of the randomly selected param2.
-- ^ If absent, the parameter 'param2' is used as a constant.
place_offset_y = 0,
-- ^ Y offset of the decoration base node relative to the standard
-- ^ base node position for simple decorations.
-- ^ Can be positive or negative. Default is 0.
-- ^ Ignored by 'y_min', 'y_max' and 'spawn_by' checks, which always refer
-- ^ to the 'place_on' node.
----- Schematic-type parameters
schematic = "foobar.mts",