mirror of
https://github.com/PaperMC/Paper.git
synced 2024-11-29 11:42:55 +01:00
39 lines
2.3 KiB
Diff
39 lines
2.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Martijn Muijsers <martijnmuijsers@live.nl>
|
|
Date: Mon, 21 Aug 2023 21:05:09 +0200
|
|
Subject: [PATCH] Optimize nearest structure border iteration
|
|
|
|
Getting the nearest generated structure contains a nested set of loops that
|
|
iterates over all chunks at a specific chessboard distance. It does this by
|
|
iterating over the entire square of chunks within that distance, and checking
|
|
if the coordinates are at exactly the right distance to be on the border.
|
|
|
|
This patch optimizes the iteration by only iterating over the border chunks.
|
|
This evaluated chunks are the same, and in the same order, as before, to
|
|
ensure that the returned found structure (which may for example be a buried
|
|
treasure that will be marked on a treasure map) is the same as in vanilla.
|
|
|
|
diff --git a/src/main/java/net/minecraft/world/level/chunk/ChunkGenerator.java b/src/main/java/net/minecraft/world/level/chunk/ChunkGenerator.java
|
|
index 31c5f54c90d6e35875f762747f8618e58e2eed91..582065b2d4e818c0edec36b2e9847f8ed3266b10 100644
|
|
--- a/src/main/java/net/minecraft/world/level/chunk/ChunkGenerator.java
|
|
+++ b/src/main/java/net/minecraft/world/level/chunk/ChunkGenerator.java
|
|
@@ -265,12 +265,15 @@ public abstract class ChunkGenerator {
|
|
int i1 = placement.spacing();
|
|
|
|
for (int j1 = -radius; j1 <= radius; ++j1) {
|
|
- boolean flag1 = j1 == -radius || j1 == radius;
|
|
+ // Paper start - Perf: iterate over border chunks instead of entire square chunk area
|
|
+ boolean flag1 = j1 == -radius || j1 == radius; final boolean onBorderAlongZAxis = flag1; // Paper - OBFHELPER
|
|
|
|
- for (int k1 = -radius; k1 <= radius; ++k1) {
|
|
- boolean flag2 = k1 == -radius || k1 == radius;
|
|
+ for (int k1 = -radius; k1 <= radius; k1 += onBorderAlongZAxis ? 1 : radius * 2) {
|
|
+ // boolean flag2 = k1 == -radius || k1 == radius;
|
|
|
|
- if (flag1 || flag2) {
|
|
+ // if (flag1 || flag2) {
|
|
+ if (true) {
|
|
+ // Paper end - Perf: iterate over border chunks instead of entire square chunk area
|
|
int l1 = centerChunkX + i1 * j1;
|
|
int i2 = centerChunkZ + i1 * k1;
|
|
ChunkPos chunkcoordintpair = placement.getPotentialStructureChunk(seed, l1, i2);
|