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Paper-Old/Spigot-API-Patches/0139-Allow-Blocks-to-be-accessed-via-a-long-key.patch
Aikar 17b58d00d8
Unwrap Event Exceptions
This was a useless exception wrapper that ends up making
stack traces harder to read as well as the JVM cutting off
the important parts

Nothing catches this exception, so its safe to just get rid
of it and let the REAL exception bubble down
2019-02-23 12:17:41 -05:00

134 Zeilen
4.3 KiB
Diff

From 52bcd82fc9c739a5d191a3facdefc09304f1c527 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Tue, 14 Aug 2018 21:42:10 -0700
Subject: [PATCH] Allow Blocks to be accessed via a long key
The key can be retrieved via methods Location#toBlockKey() and
Block#getBlockKey()
World provides lookup for blocks by long key via method World#getBlockAtKey(long)
The formatting for the key is as follows:
10 bit y|27 bit z|27 bit x
The y value is considered unsigned while z and x are considered two's complement
Y range: [0, 1023]
X, Z range: [-67 108 864, 67 108 863]
diff --git a/src/main/java/org/bukkit/Location.java b/src/main/java/org/bukkit/Location.java
index 8dcb15fb..7e1ee875 100644
--- a/src/main/java/org/bukkit/Location.java
+++ b/src/main/java/org/bukkit/Location.java
@@ -10,7 +10,6 @@ import org.bukkit.util.Vector;
// Paper start
import java.util.Collection;
-import java.util.Collections;
import java.util.function.Predicate;
import org.bukkit.entity.Entity;
import org.bukkit.entity.LivingEntity;
@@ -558,6 +557,18 @@ public class Location implements Cloneable, ConfigurationSerializable {
blockLoc.setZ(getBlockZ());
return blockLoc;
}
+
+ // Paper Start
+
+ /**
+ * @return The block key for this location's block location.
+ * @see Block#getBlockKey()
+ */
+ public long toBlockKey() {
+ return ((long)getBlockX() & 0x7FFFFFF) | (((long)getBlockZ() & 0x7FFFFFF) << 27) | ((long)getBlockY() << 54);
+ }
+ // Paper End
+
/**
* @return A new location where X/Y/Z are the center of the block
*/
diff --git a/src/main/java/org/bukkit/World.java b/src/main/java/org/bukkit/World.java
index 61f2cd9a..30204b98 100644
--- a/src/main/java/org/bukkit/World.java
+++ b/src/main/java/org/bukkit/World.java
@@ -75,6 +75,37 @@ public interface World extends PluginMessageRecipient, Metadatable {
*/
public Block getBlockAt(Location location);
+ // Paper start
+ /**
+ * Gets the {@link Block} at the given block key
+ *
+ * @param key The block key. See {@link Block#getBlockKey()}
+ * @return Block at the key
+ * @see Location#toBlockKey()
+ * @see Block#getBlockKey()
+ */
+ public default Block getBlockAtKey(long key) {
+ int x = (int) ((key << 37) >> 37);
+ int y = (int) (key >>> 54);
+ int z = (int) ((key << 10) >> 37);
+ return getBlockAt(x, y, z);
+ }
+ /**
+ * Gets the {@link Location} at the given block key
+ *
+ * @param key The block key. See {@link Location#toBlockKey()}
+ * @return Location at the key
+ * @see Location#toBlockKey()
+ * @see Block#getBlockKey()
+ */
+ public default Location getLocationAtKey(long key) {
+ int x = (int) ((key << 37) >> 37);
+ int y = (int) (key >>> 54);
+ int z = (int) ((key << 10) >> 37);
+ return new Location(this, x, y, z);
+ }
+ // Paper end
+
/**
* Gets the y coordinate of the lowest block at this position such that the
* block and all blocks above it are transparent for lighting purposes.
diff --git a/src/main/java/org/bukkit/block/Block.java b/src/main/java/org/bukkit/block/Block.java
index 064acf32..d1a9512a 100644
--- a/src/main/java/org/bukkit/block/Block.java
+++ b/src/main/java/org/bukkit/block/Block.java
@@ -144,6 +144,33 @@ public interface Block extends Metadatable {
*/
int getZ();
+ // Paper Start
+
+ /**
+ * Returns this block's coordinates packed into a long value
+ * <p>
+ * The return value can be computed as follows:
+ * <br>
+ * {@code long value = ((long)getX() & 0x7FFFFFF) | (((long)getZ() & 0x7FFFFFF) << 27) | ((long)getY() << 54);}
+ * </p>
+ *
+ * <p>
+ * And may be unpacked as follows:
+ *<br>
+ * {@code int x = (int) ((packed << 37) >> 37);}
+ * <br>
+ * {@code int y = (int) (packed >>> 54);}
+ * <br>
+ * {@code int z = (int) ((packed << 10) >> 37);}
+ * </p>
+ *
+ * @return This block's x, y, and z coordinates packed into a long value
+ */
+ public default long getBlockKey() {
+ return ((long)getX() & 0x7FFFFFF) | (((long)getZ() & 0x7FFFFFF) << 27) | ((long)getY() << 54);
+ }
+ // Paper End
+
/**
* Gets the Location of the block
*
--
2.20.1