From aa50c4466e5885b2165046a1631d71bb2bd9f44d Mon Sep 17 00:00:00 2001
From: embeddedt <42941056+embeddedt@users.noreply.github.com>
Date: Sun, 23 Jul 2023 19:28:16 -0400
Subject: [PATCH] Fix memory leak in Blueprint

Implements https://github.com/team-abnormals/blueprint/pull/195, which
is still not released on 1.19.2, and may never be released on 1.18.2
---
 forge/build.gradle                            |  2 ++
 .../ObjectModificationManagerMixin.java       | 27 +++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/blueprint_modif_memory_leak/ObjectModificationManagerMixin.java

diff --git a/forge/build.gradle b/forge/build.gradle
index e58467d6..9f1b9b6f 100644
--- a/forge/build.gradle
+++ b/forge/build.gradle
@@ -45,6 +45,8 @@ dependencies {
     modCompileOnly("vazkii.patchouli:Patchouli:1.18.2-71.1")
     modCompileOnly("curse.maven:twilightforest-227639:4337390")
 
+    modCompileOnly("curse.maven:blueprint-382216:3991478")
+
     common(project(path: ":common", configuration: "namedElements")) { transitive false }
     shadowCommon(project(path: ":common", configuration: "transformProductionForge")) { transitive = false }
 }
diff --git a/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/blueprint_modif_memory_leak/ObjectModificationManagerMixin.java b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/blueprint_modif_memory_leak/ObjectModificationManagerMixin.java
new file mode 100644
index 00000000..1c5f1961
--- /dev/null
+++ b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/blueprint_modif_memory_leak/ObjectModificationManagerMixin.java
@@ -0,0 +1,27 @@
+package org.embeddedt.modernfix.forge.mixin.bugfix.blueprint_modif_memory_leak;
+
+import com.google.gson.Gson;
+import com.teamabnormals.blueprint.core.util.modification.ObjectModificationManager;
+import com.teamabnormals.blueprint.core.util.modification.selection.SelectionSpace;
+import net.minecraft.server.packs.resources.SimpleJsonResourceReloadListener;
+import org.embeddedt.modernfix.annotation.RequiresMod;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(ObjectModificationManager.class)
+@RequiresMod("blueprint")
+public abstract class ObjectModificationManagerMixin extends SimpleJsonResourceReloadListener {
+    @Shadow protected SelectionSpace selectionSpace;
+
+    public ObjectModificationManagerMixin(Gson gson, String string) {
+        super(gson, string);
+    }
+
+    @Inject(method = "apply(Ljava/util/Map;Lnet/minecraft/server/packs/resources/ResourceManager;Lnet/minecraft/util/profiling/ProfilerFiller;)V", at = @At("RETURN"), remap = false)
+    private void clearSelectionSpace(CallbackInfo ci) {
+        this.selectionSpace = consumer -> {};
+    }
+}