244 lines
10 KiB
Diff
244 lines
10 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: SuperCoder7979 <25208576+SuperCoder7979@users.noreply.github.com>
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Date: Fri, 22 Jan 2021 16:38:19 -0500
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Subject: [PATCH] lithium: gen
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Original code by CaffeineMC, licensed under GNU Lesser General Public License v3.0
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You can find the original code on https://github.com/CaffeineMC/lithium-fabric (Yarn mappings)
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diff --git a/src/main/java/me/jellysquid/mods/lithium/common/util/Pos.java b/src/main/java/me/jellysquid/mods/lithium/common/util/Pos.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..c99eff34c1be07508c88fe9525c3ae1a087fdef7
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--- /dev/null
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+++ b/src/main/java/me/jellysquid/mods/lithium/common/util/Pos.java
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@@ -0,0 +1,92 @@
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+package me.jellysquid.mods.lithium.common.util;
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+
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+import net.minecraft.core.SectionPos;
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+import net.minecraft.world.level.LevelHeightAccessor;
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+
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+public class Pos {
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+
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+ public static class BlockCoord {
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+ public static int getYSize(LevelHeightAccessor view) {
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+ return view.getHeight();
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+ }
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+ public static int getMinY(LevelHeightAccessor view) {
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+ return view.getMinBuildHeight();
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+ }
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+ public static int getMaxYInclusive(LevelHeightAccessor view) {
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+ return view.getMaxBuildHeight() - 1;
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+ }
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+ public static int getMaxYExclusive(LevelHeightAccessor view) {
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+ return view.getMaxBuildHeight();
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+ }
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+
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+ public static int getMaxInSectionCoord(int sectionCoord) {
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+ return 15 + getMinInSectionCoord(sectionCoord);
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+ }
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+
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+ public static int getMaxYInSectionIndex(LevelHeightAccessor view, int sectionIndex){
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+ return getMaxInSectionCoord(SectionYCoord.fromSectionIndex(view, sectionIndex));
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+ }
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+
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+ public static int getMinInSectionCoord(int sectionCoord) {
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+ return SectionPos.sectionToBlockCoord(sectionCoord);
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+ }
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+
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+ public static int getMinYInSectionIndex(LevelHeightAccessor view, int sectionIndex) {
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+ return getMinInSectionCoord(SectionYCoord.fromSectionIndex(view, sectionIndex));
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+ }
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+ }
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+
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+ public static class ChunkCoord {
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+ public static int fromBlockCoord(int blockCoord) {
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+ return SectionPos.blockToSectionCoord(blockCoord);
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+ }
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+
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+ public static int fromBlockSize(int i) {
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+ return i >> 4; //same method as fromBlockCoord, just be clear about coord/size semantic difference
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+ }
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+ }
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+
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+ public static class SectionYCoord {
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+ public static int getNumYSections(LevelHeightAccessor view) {
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+ return view.getSectionsCount();
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+ }
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+ public static int getMinYSection(LevelHeightAccessor view) {
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+ return view.getMinSection();
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+ }
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+ public static int getMaxYSectionInclusive(LevelHeightAccessor view) {
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+ return view.getMaxSection() - 1;
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+ }
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+ public static int getMaxYSectionExclusive(LevelHeightAccessor view) {
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+ return view.getMaxSection();
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+ }
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+
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+ public static int fromSectionIndex(LevelHeightAccessor view, int sectionCoord) {
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+ return sectionCoord + SectionYCoord.getMinYSection(view);
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+ }
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+ public static int fromBlockCoord(int blockCoord) {
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+ return SectionPos.blockToSectionCoord(blockCoord);
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+ }
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+ }
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+
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+ public static class SectionYIndex {
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+ public static int getNumYSections(LevelHeightAccessor view) {
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+ return view.getSectionsCount();
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+ }
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+ public static int getMinYSectionIndex(LevelHeightAccessor view) {
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+ return 0;
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+ }
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+ public static int getMaxYSectionIndexInclusive(LevelHeightAccessor view) {
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+ return view.getSectionsCount() - 1;
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+ }
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+ public static int getMaxYSectionIndexExclusive(LevelHeightAccessor view) {
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+ return view.getSectionsCount();
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+ }
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+
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+ public static int fromSectionCoord(LevelHeightAccessor view, int sectionCoord) {
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+ return sectionCoord - SectionYCoord.getMinYSection(view);
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+ }
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+ public static int fromBlockCoord(LevelHeightAccessor view, int blockCoord) {
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+ return fromSectionCoord(view, SectionPos.blockToSectionCoord(blockCoord));
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+ }
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+ }
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+}
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\ No newline at end of file
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diff --git a/src/main/java/net/minecraft/server/level/WorldGenRegion.java b/src/main/java/net/minecraft/server/level/WorldGenRegion.java
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index 4538e459f35d2e08fbacee71cec142a2db4b1371..d9444afba8c65c9e1591726e0e1c7ba7b6749ff0 100644
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--- a/src/main/java/net/minecraft/server/level/WorldGenRegion.java
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+++ b/src/main/java/net/minecraft/server/level/WorldGenRegion.java
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@@ -53,6 +53,7 @@ import net.minecraft.world.phys.Vec3;
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import net.minecraft.world.ticks.LevelTickAccess;
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import net.minecraft.world.ticks.WorldGenTickAccess;
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import org.slf4j.Logger;
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+import me.jellysquid.mods.lithium.common.util.Pos; // Mirai - lithium: gen
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public class WorldGenRegion implements WorldGenLevel {
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@@ -81,6 +82,8 @@ public class WorldGenRegion implements WorldGenLevel {
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private Supplier<String> currentlyGenerating;
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private final AtomicLong subTickCount = new AtomicLong();
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private static final ResourceLocation WORLDGEN_REGION_RANDOM = new ResourceLocation("worldgen_region_random");
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+ private ChunkAccess[] chunksArr; // Mirai - lithium: gen
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+ private int minChunkX, minChunkZ; // Mirai - lithium: gen
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public WorldGenRegion(ServerLevel world, List<ChunkAccess> chunks, ChunkStatus status, int placementRadius) {
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this.generatingStatus = status;
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@@ -103,6 +106,12 @@ public class WorldGenRegion implements WorldGenLevel {
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this.lastPos = ((ChunkAccess) chunks.get(chunks.size() - 1)).getPos();
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this.structureManager = world.structureManager().forWorldGenRegion(this);
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}
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+ // Mirai start - lithium: gen
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+ this.minChunkX = this.firstPos.x;
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+ this.minChunkZ = this.firstPos.z;
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+
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+ this.chunksArr = chunks.toArray(new ChunkAccess[0]);
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+ // Mirai end
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}
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public boolean isOldChunkAround(ChunkPos chunkPos, int checkRadius) {
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@@ -118,11 +127,33 @@ public class WorldGenRegion implements WorldGenLevel {
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this.currentlyGenerating = structureName;
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}
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+ // Mirai start - lithium: gen
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+ /**
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+ * @reason Use the chunk array for faster access
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+ * @author SuperCoder7979, 2No2Name
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+ */
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@Override
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public ChunkAccess getChunk(int chunkX, int chunkZ) {
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- return this.getChunk(chunkX, chunkZ, ChunkStatus.EMPTY);
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+ int x = chunkX - this.minChunkX;
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+ int z = chunkZ - this.minChunkZ;
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+ int w = this.size;
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+
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+ if (x >= 0 && z >= 0 && x < w && z < w) {
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+ return this.chunksArr[x + z * w];
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+ } else {
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+ throw new NullPointerException("No chunk exists at " + new ChunkPos(chunkX, chunkZ));
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+ }
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}
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+ /**
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+ * Use our chunk fetch function
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+ */
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+ public ChunkAccess getChunk(BlockPos pos) {
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+ // Skip checking chunk.getStatus().isAtLeast(ChunkStatus.EMPTY) here, because it is always true
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+ return this.getChunk(Pos.ChunkCoord.fromBlockCoord(pos.getX()), Pos.ChunkCoord.fromBlockCoord(pos.getZ()));
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+ }
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+ // Mirai end
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+
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@Nullable
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@Override
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public ChunkAccess getChunk(int chunkX, int chunkZ, ChunkStatus leastStatus, boolean create) {
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@@ -178,10 +209,24 @@ public class WorldGenRegion implements WorldGenLevel {
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}
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// Paper end
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+ // Mirai start - lithium: gen
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+ /**
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+ * @reason Avoid pointer de-referencing, make method easier to inline
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+ * @author JellySquid
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+ */
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@Override
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public BlockState getBlockState(BlockPos pos) {
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- return this.getChunk(SectionPos.blockToSectionCoord(pos.getX()), SectionPos.blockToSectionCoord(pos.getZ())).getBlockState(pos);
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+ int x = (Pos.ChunkCoord.fromBlockCoord(pos.getX())) - this.minChunkX;
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+ int z = (Pos.ChunkCoord.fromBlockCoord(pos.getZ())) - this.minChunkZ;
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+ int w = this.size;
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+
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+ if (x >= 0 && z >= 0 && x < w && z < w) {
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+ return this.chunksArr[x + z * w].getBlockState(pos);
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+ } else {
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+ throw new NullPointerException("No chunk exists at " + new ChunkPos(pos));
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+ }
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}
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+ // Mirai end
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@Override
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public FluidState getFluidState(BlockPos pos) {
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diff --git a/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java b/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
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index df1db87d2dd5076fccea6a1ac9271a9d786729bb..a9be97c61714597dd68fbe196c90b214a4cd9647 100644
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--- a/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
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+++ b/src/main/java/net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator.java
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@@ -67,6 +67,7 @@ public final class NoiseBasedChunkGenerator extends ChunkGenerator {
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public final Registry<NormalNoise.NoiseParameters> noises;
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public final Holder<NoiseGeneratorSettings> settings;
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private final Aquifer.FluidPicker globalFluidPicker;
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+ private int cachedSeaLevel; // Mirai - lithium: gen
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public NoiseBasedChunkGenerator(Registry<StructureSet> structureSetRegistry, Registry<NormalNoise.NoiseParameters> noiseRegistry, BiomeSource populationSource, Holder<NoiseGeneratorSettings> holder) {
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super(structureSetRegistry, Optional.empty(), populationSource);
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@@ -83,6 +84,7 @@ public final class NoiseBasedChunkGenerator extends ChunkGenerator {
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this.globalFluidPicker = (j, k, l) -> {
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return k < Math.min(-54, i) ? aquifer_b : aquifer_b1;
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};
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+ this.cachedSeaLevel = ((NoiseGeneratorSettings) this.settings.value()).seaLevel(); // Mirai - lithium: gen
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}
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@Override
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@@ -398,10 +400,19 @@ public final class NoiseBasedChunkGenerator extends ChunkGenerator {
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return ((NoiseGeneratorSettings) this.settings.value()).noiseSettings().height();
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}
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+ // Mirai start - lithium: gen
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+ /**
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+ * Use cached sea level instead of retrieving from the registry every time.
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+ * This method is called for every block in the chunk so this will save a lot of registry lookups.
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+ *
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+ * @author SuperCoder79
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+ * @reason avoid registry lookup
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+ */
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@Override
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public int getSeaLevel() {
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- return ((NoiseGeneratorSettings) this.settings.value()).seaLevel();
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+ return this.cachedSeaLevel;
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}
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+ // Mirai end
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@Override
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public int getMinY() {
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