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Add Heightmap API (#1724)
Resolves #1672 This API is intended to expose useful heightmaps found in the server to API. This exposes all of the live world heightmaps currently in the server. If a heightmap becomes impossible to implement, api spec allows the implementation to throw UnsupportedOperationException (far better than returning some weird unexpected value). Tested via: https://gist.github.com/Spottedleaf/5d47f67c55a9fb870251ff344bfeb6b3
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Spottedleaf
Daniel Ennis
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2 changed files with 215 additions and 0 deletions
161
Spigot-API-Patches/0182-Add-Heightmap-API.patch
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161
Spigot-API-Patches/0182-Add-Heightmap-API.patch
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From 61d8f2edbf9a488e035f6308d126794e3fda2d9c Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Sat, 1 Dec 2018 19:00:36 -0800
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Subject: [PATCH] Add Heightmap API
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diff --git a/src/main/java/com/destroystokyo/paper/HeightmapType.java b/src/main/java/com/destroystokyo/paper/HeightmapType.java
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new file mode 100644
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index 00000000..4cd9b5ed
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--- /dev/null
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+++ b/src/main/java/com/destroystokyo/paper/HeightmapType.java
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@@ -0,0 +1,35 @@
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+package com.destroystokyo.paper;
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+
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+import org.bukkit.World;
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+
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+/**
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+ * Enumeration of different heightmap types maintained by the server. Generally using these maps is much faster
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+ * than using an iterative search for a block in a given x, z coordinate.
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+ */
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+public enum HeightmapType {
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+
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+ /**
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+ * The highest block used for lighting in the world. Also the block returned by {@link World#getHighestBlockYAt(int, int)}}
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+ */
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+ LIGHT_BLOCKING,
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+
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+ /**
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+ * References the highest block in the world.
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+ */
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+ ANY,
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+
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+ /**
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+ * References the highest solid block in a world.
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+ */
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+ SOLID,
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+
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+ /**
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+ * References the highest solid or liquid block in a world.
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+ */
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+ SOLID_OR_LIQUID,
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+
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+ /**
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+ * References the highest solid or liquid block in a world, excluding leaves.
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+ */
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+ SOLID_OR_LIQUID_NO_LEAVES;
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+}
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diff --git a/src/main/java/org/bukkit/Location.java b/src/main/java/org/bukkit/Location.java
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index b4f3e8ce..b78b76f3 100644
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--- a/src/main/java/org/bukkit/Location.java
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+++ b/src/main/java/org/bukkit/Location.java
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@@ -612,6 +612,33 @@ public class Location implements Cloneable, ConfigurationSerializable {
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return centerLoc;
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}
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+ // Paper start - Add heightmap api
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+
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+ /**
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+ * Returns a copy of this location except with y = getWorld().getHighestBlockYAt(this.getBlockX(), this.getBlockZ())
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+ * @return A copy of this location except with y = getWorld().getHighestBlockYAt(this.getBlockX(), this.getBlockZ())
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+ * @throws NullPointerException if {{@link #getWorld()}} is {@code null}
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+ */
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+ @NotNull
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+ public Location toHighestLocation() {
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+ return this.toHighestLocation(com.destroystokyo.paper.HeightmapType.LIGHT_BLOCKING);
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+ }
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+
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+ /**
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+ * Returns a copy of this location except with y = getWorld().getHighestBlockYAt(this.getBlockX(), this.getBlockZ(), heightmap)
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+ * @param heightmap The heightmap to use for finding the highest y location.
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+ * @return A copy of this location except with y = getWorld().getHighestBlockYAt(this.getBlockX(), this.getBlockZ(), heightmap)
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+ * @throws NullPointerException if {{@link #getWorld()}} is {@code null}
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+ * @throws UnsupportedOperationException if {@link World#getHighestBlockYAt(int, int, com.destroystokyo.paper.HeightmapType)} does not support the specified heightmap
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+ */
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+ @NotNull
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+ public Location toHighestLocation(@NotNull final com.destroystokyo.paper.HeightmapType heightmap) {
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+ final Location ret = this.clone();
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+ ret.setY(this.getWorld().getHighestBlockYAt(this, heightmap));
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+ return ret;
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+ }
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+ // Paper end
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+
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/**
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* Creates explosion at this location with given power
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*
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diff --git a/src/main/java/org/bukkit/World.java b/src/main/java/org/bukkit/World.java
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index 3d8ff98a..4dc813f3 100644
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--- a/src/main/java/org/bukkit/World.java
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+++ b/src/main/java/org/bukkit/World.java
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@@ -154,6 +154,68 @@ public interface World extends PluginMessageRecipient, Metadatable {
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@NotNull
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public Block getHighestBlockAt(@NotNull Location location);
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+ // Paper start - Add heightmap API
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+ /**
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+ * Returns the highest block's y-coordinate at the specified block coordinates that match the specified heightmap's conditions.
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+ * @param x The block's x-coordinate.
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+ * @param z The block's z-coordinate.
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+ * @param heightmap The specified heightmap to use. See {@link com.destroystokyo.paper.HeightmapType}
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+ * @return The highest block's y-coordinate at (x, z) that matches the specified heightmap's conditions.
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+ * @throws UnsupportedOperationException If the heightmap type is not supported.
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+ * @implNote Implementations are recommended to use an iterative search as a fallback before resorting to
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+ * throwing an {@code UnsupportedOperationException}.
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+ * @see com.destroystokyo.paper.HeightmapType
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+ */
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+ public int getHighestBlockYAt(int x, int z, @NotNull com.destroystokyo.paper.HeightmapType heightmap) throws UnsupportedOperationException;
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+
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+ /**
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+ * Returns the highest block's y-coordinate at the specified block coordinates that match the specified heightmap's conditions.
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+ * Note that the y-coordinate of the specified location is ignored.
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+ * @param location The specified block coordinates.
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+ * @param heightmap The specified heightmap to use. See {@link com.destroystokyo.paper.HeightmapType}
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+ * @return The highest block's y-coordinate at {@code location} that matches the specified heightmap's conditions.
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+ * @throws UnsupportedOperationException If the heightmap type is not supported.
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+ * @implNote Implementations are recommended to use an iterative search as a fallback before resorting to
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+ * throwing an {@code UnsupportedOperationException}.
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+ * @see com.destroystokyo.paper.HeightmapType
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+ */
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+ default int getHighestBlockYAt(@NotNull Location location, @NotNull com.destroystokyo.paper.HeightmapType heightmap) throws UnsupportedOperationException {
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+ return this.getHighestBlockYAt(location.getBlockX(), location.getBlockZ(), heightmap);
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+ }
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+
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+ /**
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+ * Returns the highest {@link Block} at the specified block coordinates that match the specified heightmap's conditions.
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+ * @param x The block's x-coordinate.
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+ * @param z The block's z-coordinate.
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+ * @param heightmap The specified heightmap to use. See {@link com.destroystokyo.paper.HeightmapType}
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+ * @return The highest {@link Block} at (x, z) that matches the specified heightmap's conditions.
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+ * @throws UnsupportedOperationException If the heightmap type is not supported.
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+ * @implNote Implementations are recommended to use an iterative search as a fallback before resorting to
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+ * throwing an {@code UnsupportedOperationException}.
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+ * @see com.destroystokyo.paper.HeightmapType
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+ */
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+ @NotNull
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+ default Block getHighestBlockAt(int x, int z, @NotNull com.destroystokyo.paper.HeightmapType heightmap) throws UnsupportedOperationException {
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+ return this.getBlockAt(x, this.getHighestBlockYAt(x, z, heightmap), z);
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+ }
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+
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+ /**
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+ * Returns the highest {@link Block} at the specified block coordinates that match the specified heightmap's conditions.
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+ * Note that the y-coordinate of the specified location is ignored.
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+ * @param location The specified block coordinates.
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+ * @param heightmap The specified heightmap to use. See {@link com.destroystokyo.paper.HeightmapType}
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+ * @return The highest {@link Block} at {@code location} that matches the specified heightmap's conditions.
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+ * @throws UnsupportedOperationException If the heightmap type is not supported.
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+ * @implNote Implementations are recommended to use an iterative search as a fallback before resorting to
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+ * throwing an {@code UnsupportedOperationException}.
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+ * @see com.destroystokyo.paper.HeightmapType
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+ */
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+ @NotNull
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+ default Block getHighestBlockAt(@NotNull Location location, @NotNull com.destroystokyo.paper.HeightmapType heightmap) throws UnsupportedOperationException {
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+ return this.getHighestBlockAt(location.getBlockX(), location.getBlockZ(), heightmap);
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+ }
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+ // Paper end
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+
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/**
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* Gets the {@link Chunk} at the given coordinates
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*
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--
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2.21.0
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54
Spigot-Server-Patches/0437-Add-Heightmap-API.patch
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54
Spigot-Server-Patches/0437-Add-Heightmap-API.patch
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@ -0,0 +1,54 @@
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From aae0b5f4b74ab34bbd6d0f3bcd5c34e78bcffabb Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Tue, 1 Jan 2019 02:22:01 -0800
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Subject: [PATCH] Add Heightmap API
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index b940f95bd..d20f6ac7e 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -720,6 +720,7 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
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}
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}
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+ public final int getHighestBlockY(final HeightMap.Type heightmap, final int x, final int z) { return this.a(heightmap, x, z); } // Paper - OBFHELPER
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public int a(HeightMap.Type heightmap_type, int i, int j) {
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int k;
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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index 40ee34675..457aa5a3f 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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@@ -136,6 +136,28 @@ public class CraftWorld implements World {
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return world.getHighestBlockYAt(HeightMap.Type.LIGHT_BLOCKING, new BlockPosition(x, 0, z)).getY();
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}
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+ // Paper start - Implement heightmap api
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+ @Override
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+ public int getHighestBlockYAt(final int x, final int z, final com.destroystokyo.paper.HeightmapType heightmap) throws UnsupportedOperationException {
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+ this.loadChunk(x >> 4, z >> 4); // heightmap will ret 0 on unloaded areas
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+
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+ switch (heightmap) {
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+ case LIGHT_BLOCKING:
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+ return this.world.getHighestBlockY(HeightMap.Type.LIGHT_BLOCKING, x, z);
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+ case ANY:
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+ return this.world.getHighestBlockY(HeightMap.Type.WORLD_SURFACE, x, z);
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+ case SOLID:
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+ return this.world.getHighestBlockY(HeightMap.Type.OCEAN_FLOOR, x, z);
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+ case SOLID_OR_LIQUID:
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+ return this.world.getHighestBlockY(HeightMap.Type.MOTION_BLOCKING, x, z);
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+ case SOLID_OR_LIQUID_NO_LEAVES:
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+ return this.world.getHighestBlockY(HeightMap.Type.MOTION_BLOCKING_NO_LEAVES, x, z);
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+ default:
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+ throw new UnsupportedOperationException();
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+ }
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+ }
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+ // Paper end
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+
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public Location getSpawnLocation() {
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BlockPosition spawn = world.getSpawn();
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return new Location(this, spawn.getX(), spawn.getY(), spawn.getZ());
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--
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2.21.0
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