91 lines
5.3 KiB
Diff
91 lines
5.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Mon, 10 May 2021 15:46:57 -0700
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Subject: [PATCH] Fix incorrect status dataconverter for pre 1.13 chunks
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Vanilla was setting non-populated OR non-lit chunks to empty, but
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really this is just completely wrong. It should be set to "carved"
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at minmum, because pre 1.13 chunks went through 3 distinct stages
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of generation: carving, population, and lighting - in this order.
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There is no "empty" status, because a chunk was simply carved
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or it didn't exist. So mapping any chunk data to empty is simply
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invalid.
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If the chunk is terrain populated, then obviously it must be at
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minmum "decorated." If the chunk is lit and populated, then it is marked
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"mobs_spawned" (which is what Vanilla is doing, and this is the last
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stage before moving to full so it looks correct).
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So now here is a table representing the new status conversion:
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Chunk is lit Chunk is populated Vanilla
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F F empty
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T F empty
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F T empty
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T T mobs_spawned
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Chunk is lit Chunk is populated Paper
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F F carved
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T F carved
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F T decorated
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T T mobs_spawned
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This should fix some problems converting old data, as the
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changes here are going to prevent the chunk from being regenerated
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incorrectly.
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diff --git a/src/main/java/net/minecraft/util/datafix/fixes/ChunkToProtochunkFix.java b/src/main/java/net/minecraft/util/datafix/fixes/ChunkToProtochunkFix.java
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index 16f6aa39385e2d278d4883a32c11ddd119d0d85d..3d262dcf6db0e395d2fa457f7197f24013037ac1 100644
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--- a/src/main/java/net/minecraft/util/datafix/fixes/ChunkToProtochunkFix.java
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+++ b/src/main/java/net/minecraft/util/datafix/fixes/ChunkToProtochunkFix.java
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@@ -43,13 +43,21 @@ public class ChunkToProtochunkFix extends DataFix {
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return dynamic.asStreamOpt().result();
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});
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Dynamic<?> dynamic = (Dynamic) typed1.get(DSL.remainderFinder());
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- boolean flag = dynamic.get("TerrainPopulated").asBoolean(false) && (!dynamic.get("LightPopulated").asNumber().result().isPresent() || dynamic.get("LightPopulated").asBoolean(false));
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-
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- dynamic = dynamic.set("Status", dynamic.createString(flag ? "mobs_spawned" : "empty"));
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+ // Paper start - fix incorrect status conversion
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+ // Vanilla is setting chunks to incorrect status here, they should be using at minimum carved.
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+ // for populated chunks, it should be at minimum decorated
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+ // and for lit and populated, mobs_spawned is correct (technically mobs_spawned should be for populated,
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+ // but if it's not lit then it can't be set above lit)
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+ final boolean terrainPopulated = dynamic.get("TerrainPopulated").asBoolean(false);
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+ final boolean lightPopulated = dynamic.get("LightPopulated").asBoolean(false) || dynamic.get("LightPopulated").asNumber().result().isPresent();
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+ final String newStatus = !terrainPopulated ? "carved" : (lightPopulated ? "mobs_spawned" : "decorated");
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+
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+ dynamic = dynamic.set("Status", dynamic.createString(newStatus));
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dynamic = dynamic.set("hasLegacyStructureData", dynamic.createBoolean(true));
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- Dynamic dynamic1;
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+ // Paper end - fix incorrect status conversion
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+ Dynamic<?> dynamic1; // Paper - decompile fix
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- if (flag) {
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+ if (true) { // Paper - fix incorrect status conversion
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Optional<ByteBuffer> optional1 = dynamic.get("Biomes").asByteBufferOpt().result();
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if (optional1.isPresent()) {
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@@ -70,7 +78,7 @@ public class ChunkToProtochunkFix extends DataFix {
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}).collect(Collectors.toList());
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if (optional.isPresent()) {
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- ((Stream) optional.get()).forEach((dynamic2) -> {
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+ optional.get().forEach((dynamic2) -> { // Paper - decompile fix
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int j = dynamic2.get("x").asInt(0);
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int k = dynamic2.get("y").asInt(0);
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int l = dynamic2.get("z").asInt(0);
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@@ -78,11 +86,11 @@ public class ChunkToProtochunkFix extends DataFix {
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((ShortList) list.get(k >> 4)).add(short0);
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});
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+ Dynamic<?> finalDynamic = dynamic; // Paper - decompile fix
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dynamic = dynamic.set("ToBeTicked", dynamic.createList(list.stream().map((shortlist) -> {
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- Stream stream = shortlist.stream();
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+ Stream<Short> stream = shortlist.stream(); // Paper - decompile fix
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- dynamic.getClass();
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- return dynamic.createList(stream.map(dynamic::createShort));
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+ return finalDynamic.createList(stream.map(finalDynamic::createShort));
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})));
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}
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