1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
From 777336e47986d99c007847d7ae72f3db8279da5b 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 4c2a269d..2719eecb 100644
--- a/src/main/java/org/bukkit/Location.java
+++ b/src/main/java/org/bukkit/Location.java
@@ -13,7 +13,6 @@ import org.jetbrains.annotations.Nullable;
// 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;
@@ -578,6 +577,17 @@ 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(int, int, int)
+ */
+ public long toBlockKey() {
+ return Block.getBlockKey(getBlockX(), getBlockY(), getBlockZ());
+ }
+ // 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 1b0744ed..fa736b07 100644
--- a/src/main/java/org/bukkit/World.java
+++ b/src/main/java/org/bukkit/World.java
@@ -80,6 +80,38 @@ public interface World extends PluginMessageRecipient, Metadatable {
@NotNull
public Block getBlockAt(@NotNull 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 Block#getBlockKey(int, int, int)
+ */
+ @NotNull
+ public default Block getBlockAtKey(long key) {
+ int x = Block.getBlockKeyX(key);
+ int y = Block.getBlockKeyY(key);
+ int z = Block.getBlockKeyZ(key);
+ 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 Block#getBlockKey(int, int, int)
+ */
+ @NotNull
+ public default Location getLocationAtKey(long key) {
+ int x = Block.getBlockKeyX(key);
+ int y = Block.getBlockKeyY(key);
+ int z = Block.getBlockKeyZ(key);
+ 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 708288e9..c20f903a 100644
--- a/src/main/java/org/bukkit/block/Block.java
+++ b/src/main/java/org/bukkit/block/Block.java
@@ -153,6 +153,76 @@ public interface Block extends Metadatable {
*/
int getZ();
+ // Paper Start
+ /**
+ * Returns this block's coordinates packed into a long value.
+ * Computed via: {@code Block.getBlockKey(this.getX(), this.getY(), this.getZ())}
+ * @see Block#getBlockKey(int, int, int)
+ * @return This block's x, y, and z coordinates packed into a long value
+ */
+ public default long getBlockKey() {
+ return Block.getBlockKey(this.getX(), this.getY(), this.getZ());
+ }
+
+ /**
+ * Returns the specified block coordinates packed into a long value
+ * <p>
+ * The return value can be computed as follows:
+ * <br>
+ * {@code long value = ((long)x & 0x7FFFFFF) | (((long)z & 0x7FFFFFF) << 27) | ((long)y << 54);}
+ * </br>
+ * </p>
+ *
+ * <p>
+ * And may be unpacked as follows:
+ * <br>
+ * {@code int x = (int) ((packed << 37) >> 37);}
+ * </br>
+ * <br>
+ * {@code int y = (int) (packed >>> 54);}
+ * </br>
+ * <br>
+ * {@code int z = (int) ((packed << 10) >> 37);}
+ * </br>
+ * </p>
+ *
+ * @return This block's x, y, and z coordinates packed into a long value
+ */
+ public static long getBlockKey(int x, int y, int z) {
+ return ((long)x & 0x7FFFFFF) | (((long)z & 0x7FFFFFF) << 27) | ((long)y << 54);
+ }
+
+ /**
+ * Returns the x component from the packed value.
+ * @param packed The packed value, as computed by {@link Block#getBlockKey(int, int, int)}
+ * @see Block#getBlockKey(int, int, int)
+ * @return The x component from the packed value.
+ */
+ public static int getBlockKeyX(long packed) {
+ return (int) ((packed << 37) >> 37);
+ }
+
+ /**
+ * Returns the y component from the packed value.
+ * @param packed The packed value, as computed by {@link Block#getBlockKey(int, int, int)}
+ * @see Block#getBlockKey(int, int, int)
+ * @return The y component from the packed value.
+ */
+ public static int getBlockKeyY(long packed) {
+ return (int) (packed >>> 54);
+ }
+
+ /**
+ * Returns the z component from the packed value.
+ * @param packed The packed value, as computed by {@link Block#getBlockKey(int, int, int)}
+ * @see Block#getBlockKey(int, int, int)
+ * @return The z component from the packed value.
+ */
+ public static int getBlockKeyZ(long packed) {
+ return (int) ((packed << 10) >> 37);
+ }
+ // Paper End
+
/**
* Gets the Location of the block
*
--
2.21.0
|
