Add transient modifiers (#9244)

This allows adding modifiers as transient. Transient modifiers don't get saved with the NBT data.
Vanilla itself uses transient modifiers for speed modifications like sprinting or powder snow. This just exposes it in the API.
This commit is contained in:
Malfrador 2023-06-05 19:15:18 +02:00
parent e36eed4507
commit c137b5dc31
2 changed files with 68 additions and 0 deletions

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@ -0,0 +1,27 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Malfrador <malfrador@gmail.com>
Date: Wed, 31 May 2023 21:25:01 +0200
Subject: [PATCH] Add transient modifier API
diff --git a/src/main/java/org/bukkit/attribute/AttributeInstance.java b/src/main/java/org/bukkit/attribute/AttributeInstance.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/attribute/AttributeInstance.java
+++ b/src/main/java/org/bukkit/attribute/AttributeInstance.java
@@ -0,0 +0,0 @@ public interface AttributeInstance {
*/
void addModifier(@NotNull AttributeModifier modifier);
+ // Paper start - Transient modifier API
+ /**
+ * Add a transient modifier to this instance.
+ * Transient modifiers are not persisted (saved with the NBT data)
+ *
+ * @param modifier to add
+ */
+ void addTransientModifier(@NotNull AttributeModifier modifier);
+ // Paper end
+
/**
* Remove a modifier from this instance.
*

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@ -0,0 +1,41 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Malfrador <malfrador@gmail.com>
Date: Wed, 31 May 2023 23:30:00 +0200
Subject: [PATCH] Add transient modifier API
diff --git a/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeInstance.java b/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeInstance.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeInstance.java
+++ b/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeInstance.java
@@ -0,0 +0,0 @@ public class UnmodifiableAttributeInstance extends CraftAttributeInstance {
throw new UnsupportedOperationException("Cannot modify default attributes");
}
+ @Override
+ public void addTransientModifier(AttributeModifier modifier) {
+ throw new UnsupportedOperationException("Cannot modify default attributes");
+ }
+
@Override
public void removeModifier(AttributeModifier modifier) {
throw new UnsupportedOperationException("Cannot modify default attributes");
diff --git a/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeInstance.java b/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeInstance.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeInstance.java
+++ b/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeInstance.java
@@ -0,0 +0,0 @@ public class CraftAttributeInstance implements AttributeInstance {
this.handle.addPermanentModifier(CraftAttributeInstance.convert(modifier));
}
+ // Paper start - Transient modifier API
+ @Override
+ public void addTransientModifier(AttributeModifier modifier) {
+ Preconditions.checkArgument(modifier != null, "modifier");
+ this.handle.addTransientModifier(CraftAttributeInstance.convert(modifier));
+ }
+ // Paper end
+
@Override
public void removeModifier(AttributeModifier modifier) {
Preconditions.checkArgument(modifier != null, "modifier");