71 lines
4.6 KiB
Diff
71 lines
4.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Phoenix616 <mail@moep.tv>
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Date: Mon, 13 Jan 2020 15:40:32 +0100
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Subject: [PATCH] Seed based feature search
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This tries to work around the issue where the server will load
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surrounding chunks up to a radius of 100 chunks in order to search for
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features e.g. when running the /locate command or for treasure maps
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(issue #2312).
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This is done by backporting Mojang's change in 1.17 which makes it so
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that the biome (generated by the seed) is checked first if the feature
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can be generated before actually to load the chunk.
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Additionally to that the center location of the target chunk is simply
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returned if the chunk is not loaded to avoid the sync chunk load.
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As this can lead to less precise locations a toggle is provided to
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enable the sync loading of the target chunk again.
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The main downside of this is that it breaks once the seed or generator
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changes but this should usually not happen. A config option to disable
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this completely is added though in case that should ever be necessary.
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diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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index d985472c7982130cfa3a7d85694fd692717fa295..52c2373e1277e3f98bdfeafae0ef79158622b753 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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@@ -400,6 +400,14 @@ public class PaperWorldConfig {
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}
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}
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+ public boolean seedBasedFeatureSearch = true;
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+ public boolean seedBasedFeatureSearchLoadsChunks = true;
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+ private void seedBasedFeatureSearch() {
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+ seedBasedFeatureSearch = getBoolean("seed-based-feature-search", seedBasedFeatureSearch);
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+ seedBasedFeatureSearchLoadsChunks = getBoolean("seed-based-feature-search-loads-chunks", seedBasedFeatureSearchLoadsChunks);
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+ log("Feature search is based on seed: " + seedBasedFeatureSearch + ", loads chunks:" + seedBasedFeatureSearchLoadsChunks);
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+ }
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+
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public int maxCollisionsPerEntity;
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private void maxEntityCollision() {
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maxCollisionsPerEntity = getInt( "max-entity-collisions", this.spigotConfig.getInt("max-entity-collisions", 8) );
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diff --git a/src/main/java/net/minecraft/world/level/levelgen/feature/StructureFeature.java b/src/main/java/net/minecraft/world/level/levelgen/feature/StructureFeature.java
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index 0670c1f72d9d0c4f8ea32ed314f75a106b2e2b09..6389e94abf3bae3e3cbeac11e0c99b1e50964563 100644
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--- a/src/main/java/net/minecraft/world/level/levelgen/feature/StructureFeature.java
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+++ b/src/main/java/net/minecraft/world/level/levelgen/feature/StructureFeature.java
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@@ -175,7 +175,24 @@ public class StructureFeature<C extends FeatureConfiguration> {
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return this.getLocatePos(chunkPos);
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}
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- ChunkAccess chunkAccess = levelReader.getChunk(chunkPos.x, chunkPos.z, ChunkStatus.STRUCTURE_STARTS);
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+ // Paper start - seed based feature search
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+ ChunkAccess chunkAccess = null;
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+ if (structureAccessor.getWorld().paperConfig.seedBasedFeatureSearch) {
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+ Biome biomeBase = structureAccessor.getWorld().getBiomeManager().getBiome(new BlockPos(chunkPos.getMinBlockX() + 9, 0, chunkPos.getMinBlockZ() + 9));
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+ if (!biomeBase.getGenerationSettings().isValidStart(this)) {
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+ continue;
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+ }
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+ if (!structureAccessor.getWorld().paperConfig.seedBasedFeatureSearchLoadsChunks) {
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+ chunkAccess = structureAccessor.getWorld().getChunkIfLoaded(chunkPos.x, chunkPos.z);
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+ if (chunkAccess == null) {
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+ return chunkPos.getWorldPosition().offset(8, searchStartPos.getY(), 8);
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+ }
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+ }
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+ }
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+ if (chunkAccess == null) {
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+ chunkAccess = levelReader.getChunk(chunkPos.x, chunkPos.z, ChunkStatus.STRUCTURE_STARTS);
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+ }
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+ // Paper end
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StructureStart<?> structureStart = structureAccessor.getStartForFeature(SectionPos.bottomOf(chunkAccess), this, chunkAccess);
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if (structureStart != null && structureStart.isValid()) {
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if (skipExistingChunks && structureStart.canBeReferenced()) {
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