aboutsummaryrefslogtreecommitdiffhomepage
path: root/patches/server/0651-Allow-delegation-to-vanilla-chunk-gen.patch
blob: 8c6c32dac2ed1ecd91676e192f8f72dcd8021b06 (plain)
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
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MiniDigger <admin@benndorf.dev>
Date: Wed, 29 Apr 2020 02:10:32 +0200
Subject: [PATCH] Allow delegation to vanilla chunk gen


diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index e85e866994247b77772937ef81507041db303071..b1a75994eba329c3171a005815dd7d363006fb34 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -2482,6 +2482,90 @@ public final class CraftServer implements Server {
         return new OldCraftChunkData(world.getMinHeight(), world.getMaxHeight(), handle.registryAccess().registryOrThrow(Registries.BIOME));
     }
 
+    // Paper start - Allow delegation to vanilla chunk gen
+    private static final List<net.minecraft.world.level.chunk.status.ChunkStatus> VANILLA_GEN_STATUSES = List.of(
+        net.minecraft.world.level.chunk.status.ChunkStatus.EMPTY,
+        net.minecraft.world.level.chunk.status.ChunkStatus.STRUCTURE_STARTS,
+        net.minecraft.world.level.chunk.status.ChunkStatus.STRUCTURE_REFERENCES,
+        net.minecraft.world.level.chunk.status.ChunkStatus.BIOMES,
+        net.minecraft.world.level.chunk.status.ChunkStatus.NOISE,
+        net.minecraft.world.level.chunk.status.ChunkStatus.SURFACE,
+        net.minecraft.world.level.chunk.status.ChunkStatus.CARVERS,
+        net.minecraft.world.level.chunk.status.ChunkStatus.FEATURES,
+        net.minecraft.world.level.chunk.status.ChunkStatus.INITIALIZE_LIGHT,
+        net.minecraft.world.level.chunk.status.ChunkStatus.LIGHT
+    );
+
+    @Override
+    @Deprecated(forRemoval = true)
+    public ChunkGenerator.ChunkData createVanillaChunkData(World world, int x, int z) {
+        // do bunch of vanilla shit
+        final net.minecraft.server.level.ServerLevel serverLevel = ((CraftWorld) world).getHandle();
+        final net.minecraft.core.Registry<net.minecraft.world.level.biome.Biome> biomeRegistry = serverLevel.getServer().registryAccess().registryOrThrow(net.minecraft.core.registries.Registries.BIOME);
+        final net.minecraft.world.level.chunk.ProtoChunk protoChunk = new net.minecraft.world.level.chunk.ProtoChunk(
+            new net.minecraft.world.level.ChunkPos(x, z),
+            net.minecraft.world.level.chunk.UpgradeData.EMPTY,
+            serverLevel,
+            biomeRegistry,
+            null
+        );
+
+        final net.minecraft.world.level.chunk.ChunkGenerator chunkGenerator;
+        if (serverLevel.chunkSource.getGenerator() instanceof org.bukkit.craftbukkit.generator.CustomChunkGenerator bukkit) {
+            chunkGenerator = bukkit.getDelegate();
+        } else {
+            chunkGenerator = serverLevel.chunkSource.getGenerator();
+        }
+
+        final net.minecraft.world.level.ChunkPos chunkPos = new net.minecraft.world.level.ChunkPos(x, z);
+        final net.minecraft.util.thread.ProcessorMailbox<Runnable> mailbox = net.minecraft.util.thread.ProcessorMailbox.create(
+            net.minecraft.Util.backgroundExecutor(),
+            "CraftServer#createVanillaChunkData(worldName='" + world.getName() + "', x='" + x + "', z='" + z + "')"
+        );
+        for (final net.minecraft.world.level.chunk.status.ChunkStatus chunkStatus : VANILLA_GEN_STATUSES) {
+            final List<net.minecraft.world.level.chunk.ChunkAccess> chunks = Lists.newArrayList();
+            final int statusRange = Math.max(1, chunkStatus.getRange());
+
+            for (int zz = chunkPos.z - statusRange; zz <= chunkPos.z + statusRange; ++zz) {
+                for (int xx = chunkPos.x - statusRange; xx <= chunkPos.x + statusRange; ++xx) {
+                    if (xx == chunkPos.x && zz == chunkPos.z) {
+                        chunks.add(protoChunk);
+                    } else {
+                        final net.minecraft.core.Holder<net.minecraft.world.level.biome.Biome> biomeHolder = serverLevel.registryAccess().registryOrThrow(net.minecraft.core.registries.Registries.BIOME).getHolderOrThrow(net.minecraft.world.level.biome.Biomes.PLAINS);
+                        final net.minecraft.world.level.chunk.ChunkAccess chunk = new net.minecraft.world.level.chunk.EmptyLevelChunk(serverLevel, new net.minecraft.world.level.ChunkPos(xx, zz), biomeHolder);
+                        chunks.add(chunk);
+                    }
+                }
+            }
+
+            chunkStatus.generate(
+                new net.minecraft.world.level.chunk.status.WorldGenContext(
+                    serverLevel,
+                    chunkGenerator,
+                    serverLevel.getStructureManager(),
+                    serverLevel.chunkSource.getLightEngine()
+                ),
+                mailbox::tell,
+                chunk -> {
+                    throw new UnsupportedOperationException("Not creating full chunks here");
+                },
+                chunks
+            ).thenAccept(chunk -> {
+                if (chunk != null && chunkStatus == net.minecraft.world.level.chunk.status.ChunkStatus.NOISE) {
+                    net.minecraft.world.level.levelgen.Heightmap.primeHeightmaps(chunk, net.minecraft.world.level.chunk.status.ChunkStatus.POST_FEATURES);
+                }
+            }).join();
+        }
+
+        // get empty object
+        OldCraftChunkData data = (OldCraftChunkData) this.createChunkData(world);
+        // copy over generated sections
+        data.setRawChunkData(protoChunk.getSections());
+        // hooray!
+        return data;
+    }
+    // Paper end - Allow delegation to vanilla chunk gen
+
     @Override
     public BossBar createBossBar(String title, BarColor color, BarStyle style, BarFlag... flags) {
         return new CraftBossBar(title, color, style, flags);
diff --git a/src/main/java/org/bukkit/craftbukkit/generator/OldCraftChunkData.java b/src/main/java/org/bukkit/craftbukkit/generator/OldCraftChunkData.java
index e7f7a246e9c03e676dadfee59de87b8b2ac55ba3..9b640705f2c810160aa7fea5006429ec41d0c858 100644
--- a/src/main/java/org/bukkit/craftbukkit/generator/OldCraftChunkData.java
+++ b/src/main/java/org/bukkit/craftbukkit/generator/OldCraftChunkData.java
@@ -23,7 +23,7 @@ import org.bukkit.material.MaterialData;
 public final class OldCraftChunkData implements ChunkGenerator.ChunkData {
     private final int minHeight;
     private final int maxHeight;
-    private final LevelChunkSection[] sections;
+    private LevelChunkSection[] sections; // Paper - Allow delegation to vanilla chunk gen
     private final Registry<net.minecraft.world.level.biome.Biome> biomes;
     private Set<BlockPos> tiles;
     private final Set<BlockPos> lights = new HashSet<>();
@@ -189,7 +189,13 @@ public final class OldCraftChunkData implements ChunkGenerator.ChunkData {
         return this.tiles;
     }
 
-    Set<BlockPos> getLights() {
+    public Set<BlockPos> getLights() { // Paper - Allow delegation to vanilla chunk gen
         return this.lights;
     }
+
+    // Paper start - Allow delegation to vanilla chunk gen
+    public void setRawChunkData(LevelChunkSection[] sections) {
+        this.sections = sections;
+    }
+    // Paper end - Allow delegation to vanilla chunk gen
 }