LeavesMC/patches/server/0070-Store-mob-counts-in-an-array.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: violetc <58360096+s-yh-china@users.noreply.github.com>
Date: Tue, 18 Jul 2023 14:54:36 +0800
Subject: [PATCH] Store mob counts in an array

This patch is Powered by Gale(https://github.com/GaleMC/Gale)

diff --git a/src/main/java/net/minecraft/world/level/LocalMobCapCalculator.java b/src/main/java/net/minecraft/world/level/LocalMobCapCalculator.java
index 2039b16e5e9bc0797b3f31081d221bb8b34a4dc7..973331b29f2fd672c18c2dea858f473009d59637 100644
--- a/src/main/java/net/minecraft/world/level/LocalMobCapCalculator.java
+++ b/src/main/java/net/minecraft/world/level/LocalMobCapCalculator.java
@@ -43,13 +43,26 @@ public class LocalMobCapCalculator {
 
     static class MobCounts {
         private final Object2IntMap<MobCategory> counts = new Object2IntOpenHashMap<>(MobCategory.values().length);
+        public final int[] arrCounts = new int[MobCategory.values().length]; // Leaves - store mob counts in an array
 
         public void add(MobCategory spawnGroup) {
-            this.counts.computeInt(spawnGroup, (group, density) -> density == null ? 1 : density + 1);
+            // Leaves start - store mob counts in an array
+            if (!org.leavesmc.leaves.LeavesConfig.performance.storeMobCountsInArray) {
+                this.counts.computeInt(spawnGroup, (group, density) -> density == null ? 1 : density + 1);
+            } else {
+                this.arrCounts[spawnGroup.ordinal()]++;
+            }
+            // Leaves end - store mob counts in an array
         }
 
         public boolean canSpawn(MobCategory spawnGroup) {
-            return this.counts.getOrDefault(spawnGroup, 0) < spawnGroup.getMaxInstancesPerChunk();
+            // Leaves start - store mob counts in an array
+            if (!org.leavesmc.leaves.LeavesConfig.performance.storeMobCountsInArray) {
+                return this.counts.getOrDefault(spawnGroup, 0) < spawnGroup.getMaxInstancesPerChunk();
+            } else {
+                return this.arrCounts[spawnGroup.ordinal()] < spawnGroup.getMaxInstancesPerChunk();
+            }
+            // Leaves end - store mob counts in an array
         }
     }
 }