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73 lines
3.1 KiB
Diff
73 lines
3.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Noah van der Aa <ndvdaa@gmail.com>
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Date: Wed, 15 Sep 2021 20:40:51 +0200
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Subject: [PATCH] Friction API
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diff --git a/src/main/java/io/papermc/paper/entity/Frictional.java b/src/main/java/io/papermc/paper/entity/Frictional.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..315558d8a592f7238f45fd1e68b70476e721be92
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--- /dev/null
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+++ b/src/main/java/io/papermc/paper/entity/Frictional.java
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@@ -0,0 +1,35 @@
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+package io.papermc.paper.entity;
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+
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+import net.kyori.adventure.util.TriState;
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+import org.bukkit.entity.Entity;
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+import org.jspecify.annotations.NullMarked;
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+
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+/**
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+ * Represents an {@link Entity} that can experience friction with the air and ground.
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+ */
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+@NullMarked
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+public interface Frictional {
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+
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+ /**
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+ * Gets the friction state of this entity.
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+ * When set to {@link TriState#TRUE}, the entity will always experience friction.
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+ * When set to {@link TriState#FALSE}, the entity will never experience friction.
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+ * When set to {@link TriState#NOT_SET}, the entity will fall back to Minecraft's default behaviour.
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+ *
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+ * @return the entity's friction state
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+ */
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+ TriState getFrictionState();
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+
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+ /**
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+ * Sets the friction state of this entity.
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+ * When set to {@link TriState#TRUE}, the entity will always experience friction.
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+ * When set to {@link TriState#FALSE}, the entity will never experience friction.
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+ * When set to {@link TriState#NOT_SET}, the entity will fall back to Minecraft's default behaviour.
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+ * <p>
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+ * Please note that changing this value will do nothing for a player.
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+ *
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+ * @param state the new friction state to set for the entity
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+ */
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+ void setFrictionState(TriState state);
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+
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+}
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diff --git a/src/main/java/org/bukkit/entity/Item.java b/src/main/java/org/bukkit/entity/Item.java
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index ced419f8655bff72f0257b639d5f7d73afe3c2e2..bcc6ba95bd21c7972865838c636a03f50b6c1f1a 100644
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--- a/src/main/java/org/bukkit/entity/Item.java
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+++ b/src/main/java/org/bukkit/entity/Item.java
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@@ -8,7 +8,7 @@ import org.jetbrains.annotations.Nullable;
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/**
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* Represents a dropped item.
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*/
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-public interface Item extends Entity {
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+public interface Item extends Entity, io.papermc.paper.entity.Frictional { // Paper
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/**
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* Gets the item stack associated with this item drop.
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diff --git a/src/main/java/org/bukkit/entity/LivingEntity.java b/src/main/java/org/bukkit/entity/LivingEntity.java
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index 9f3e2903c955f2a5d1b25825c49188df62d20cef..016529563381a674db8050cb328f9e8f16e72e93 100644
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--- a/src/main/java/org/bukkit/entity/LivingEntity.java
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+++ b/src/main/java/org/bukkit/entity/LivingEntity.java
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@@ -27,7 +27,7 @@ import org.jetbrains.annotations.Nullable;
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/**
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* Represents a living entity, such as a monster or player
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*/
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-public interface LivingEntity extends Attributable, Damageable, ProjectileSource {
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+public interface LivingEntity extends Attributable, Damageable, ProjectileSource, io.papermc.paper.entity.Frictional { // Paper
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/**
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* Gets the height of the living entity's eyes above its Location.
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