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Document placement modifier (#2863) 

* Document placement modifier

* Update position calculation javadoc
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enbrain 2021-11-22 20:52:25 +09:00 committed by GitHub
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6
mappings/net/minecraft/world/gen/decorator/PlacementModifier.mapping
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@ -1,6 +1,12 @@
CLASS net/minecraft/class_6797 net/minecraft/world/gen/decorator/PlacementModifier
COMMENT A placement modifier is a one-to-many position transformation, which
COMMENT takes a position with some context and returns zero or more positions.
COMMENT It's used to determine where to generate configured features.
COMMENT
COMMENT @see net.minecraft.world.gen.feature.ConfiguredFeature#withPlacement
FIELD field_35736 CODEC Lcom/mojang/serialization/Codec;
METHOD method_14452 getPositions (Lnet/minecraft/class_5444;Ljava/util/Random;Lnet/minecraft/class_2338;)Ljava/util/stream/Stream;
COMMENT Applies this placement modifier to the given position.
ARG 1 context
ARG 2 random
ARG 3 pos

12
mappings/net/minecraft/world/gen/feature/ConfiguredFeature.mapping
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@ -21,7 +21,19 @@ CLASS net/minecraft/class_2975 net/minecraft/world/gen/feature/ConfiguredFeature
METHOD method_39592 withBlockPredicateFilter (Lnet/minecraft/class_6646;)Lnet/minecraft/class_6796;
ARG 1 predicate
METHOD method_39593 withPlacement (Ljava/util/List;)Lnet/minecraft/class_6796;
COMMENT Attaches placement modifiers to this configured feature. Attached
COMMENT placement modifiers will be applied before this configured feature is
COMMENT generated.
COMMENT
COMMENT @see #withPlacement(PlacementModifier...)
COMMENT @see PlacedFeature#generate(StructureWorldAccess, ChunkGenerator, Random, BlockPos)
ARG 1 modifiers
METHOD method_39594 withPlacement ([Lnet/minecraft/class_6797;)Lnet/minecraft/class_6796;
COMMENT Attaches placement modifiers to this configured feature. Attached
COMMENT placement modifiers will be applied before this configured feature is
COMMENT generated.
COMMENT
COMMENT @see #withPlacement(List)
COMMENT @see PlacedFeature#generate(StructureWorldAccess, ChunkGenerator, Random, BlockPos)
ARG 1 modifiers
METHOD method_39595 withInAirFilter ()Lnet/minecraft/class_6796;

6
mappings/net/minecraft/world/gen/feature/PlacedFeature.mapping
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@ -18,6 +18,12 @@ CLASS net/minecraft/class_6796 net/minecraft/world/gen/feature/PlacedFeature
ARG 2 random
ARG 3 pos
METHOD method_39650 generate (Lnet/minecraft/class_5281;Lnet/minecraft/class_2794;Ljava/util/Random;Lnet/minecraft/class_2338;)Z
COMMENT Generates a configured feature at the positions obtained by applying
COMMENT placement modifiers to the given position.
COMMENT
COMMENT <p>To calculate positions, it first creates a singleton stream of the
COMMENT given position, then it applies placement modifiers with {@linkplain
COMMENT Stream#flatMap flatMap} in order they appear in the list.
ARG 1 world
ARG 2 generator
ARG 3 random