250 lines
7.9 KiB
Diff
250 lines
7.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: MiniDigger <admin@benndorf.dev>
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Date: Fri, 3 Jan 2020 16:24:46 +0100
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Subject: [PATCH] Add Mob Goal API
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diff --git a/src/main/java/com/destroystokyo/paper/entity/ai/Goal.java b/src/main/java/com/destroystokyo/paper/entity/ai/Goal.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..88f64a84c6b81246a4936e37c9f0410eefc847fd
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--- /dev/null
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+++ b/src/main/java/com/destroystokyo/paper/entity/ai/Goal.java
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@@ -0,0 +1,63 @@
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+package com.destroystokyo.paper.entity.ai;
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+
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+import java.util.EnumSet;
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+import org.bukkit.entity.Mob;
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+import org.jspecify.annotations.NullMarked;
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+
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+/**
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+ * Represents an AI goal of an entity
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+ */
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+@NullMarked
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+public interface Goal<T extends Mob> {
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+
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+ /**
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+ * Checks if this goal should be activated
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+ *
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+ * @return if this goal should be activated
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+ */
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+ boolean shouldActivate();
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+
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+ /**
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+ * Checks if this goal should stay active, defaults to {@link Goal#shouldActivate()}
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+ *
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+ * @return if this goal should stay active
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+ */
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+ default boolean shouldStayActive() {
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+ return this.shouldActivate();
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+ }
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+
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+ /**
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+ * Called when this goal gets activated
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+ */
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+ default void start() {
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+ }
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+
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+ /**
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+ * Called when this goal gets stopped
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+ */
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+ default void stop() {
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+ }
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+
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+ /**
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+ * Called each tick the goal is activated
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+ */
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+ default void tick() {
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+ }
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+
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+ /**
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+ * A unique key that identifies this type of goal. Plugins should use their own namespace, not the minecraft
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+ * namespace. Additionally, this key also specifies to what mobs this goal can be applied to
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+ *
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+ * @return the goal key
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+ */
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+ GoalKey<T> getKey();
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+
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+ /**
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+ * Returns a list of all applicable flags for this goal.<br>
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+ * <p>
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+ * This method is only called on construction.
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+ *
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+ * @return the subtypes.
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+ */
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+ EnumSet<GoalType> getTypes();
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+}
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diff --git a/src/main/java/com/destroystokyo/paper/entity/ai/GoalKey.java b/src/main/java/com/destroystokyo/paper/entity/ai/GoalKey.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..fb626065c642a3f43075f2ae751419e23431763c
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--- /dev/null
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+++ b/src/main/java/com/destroystokyo/paper/entity/ai/GoalKey.java
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@@ -0,0 +1,59 @@
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+package com.destroystokyo.paper.entity.ai;
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+
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+import com.google.common.base.Objects;
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+import java.util.StringJoiner;
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+import org.bukkit.NamespacedKey;
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+import org.bukkit.entity.Mob;
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+import org.jspecify.annotations.NullMarked;
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+import org.jspecify.annotations.Nullable;
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+
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+/**
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+ * Used to identify a Goal. Consists of a {@link NamespacedKey} and the type of mob the goal can be applied to
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+ *
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+ * @param <T> the type of mob the goal can be applied to
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+ */
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+@NullMarked
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+public final class GoalKey<T extends Mob> {
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+
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+ private final Class<T> entityClass;
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+ private final NamespacedKey namespacedKey;
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+
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+ private GoalKey(Class<T> entityClass, NamespacedKey namespacedKey) {
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+ this.entityClass = entityClass;
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+ this.namespacedKey = namespacedKey;
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+ }
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+
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+ public Class<T> getEntityClass() {
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+ return this.entityClass;
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+ }
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+
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+ public NamespacedKey getNamespacedKey() {
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+ return this.namespacedKey;
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+ }
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+
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+ @Override
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+ public boolean equals(@Nullable Object o) {
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+ if (this == o) return true;
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+ if (o == null || this.getClass() != o.getClass()) return false;
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+ GoalKey<?> goalKey = (GoalKey<?>) o;
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+ return Objects.equal(this.entityClass, goalKey.entityClass) &&
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+ Objects.equal(this.namespacedKey, goalKey.namespacedKey);
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+ }
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+
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+ @Override
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+ public int hashCode() {
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+ return Objects.hashCode(this.entityClass, this.namespacedKey);
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+ }
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+
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+ @Override
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+ public String toString() {
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+ return new StringJoiner(", ", GoalKey.class.getSimpleName() + "[", "]")
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+ .add("entityClass=" + this.entityClass)
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+ .add("namespacedKey=" + this.namespacedKey)
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+ .toString();
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+ }
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+
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+ public static <A extends Mob> GoalKey<A> of(Class<A> entityClass, NamespacedKey namespacedKey) {
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+ return new GoalKey<>(entityClass, namespacedKey);
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+ }
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+}
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diff --git a/src/main/java/com/destroystokyo/paper/entity/ai/GoalType.java b/src/main/java/com/destroystokyo/paper/entity/ai/GoalType.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..7024c8f484d2460abf3abfe65a29771d814105ec
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--- /dev/null
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+++ b/src/main/java/com/destroystokyo/paper/entity/ai/GoalType.java
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@@ -0,0 +1,17 @@
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+package com.destroystokyo.paper.entity.ai;
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+
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+/**
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+ * Represents the subtype of a goal. Used by minecraft to disable certain types of goals if needed.
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+ */
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+public enum GoalType {
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+
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+ MOVE,
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+ LOOK,
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+ JUMP,
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+ TARGET,
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+ /**
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+ * Used to map vanilla goals, that are a behavior goal but don't have a type set...
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+ */
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+ UNKNOWN_BEHAVIOR,
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+
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+}
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diff --git a/src/main/java/com/destroystokyo/paper/entity/ai/MobGoals.java b/src/main/java/com/destroystokyo/paper/entity/ai/MobGoals.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..0203e7efbb8c729ed378c53c2630a523b697314f
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--- /dev/null
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+++ b/src/main/java/com/destroystokyo/paper/entity/ai/MobGoals.java
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@@ -0,0 +1,42 @@
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+package com.destroystokyo.paper.entity.ai;
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+
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+
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+import java.util.Collection;
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+import org.bukkit.entity.Mob;
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+import org.jspecify.annotations.NullMarked;
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+import org.jspecify.annotations.Nullable;
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+
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+/**
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+ * Represents a part of the "brain" of a mob. It tracks all tasks (running or not), allows adding and removing goals
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+ */
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+@NullMarked
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+public interface MobGoals {
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+
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+ <T extends Mob> void addGoal(T mob, int priority, Goal<T> goal);
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+
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+ <T extends Mob> void removeGoal(T mob, Goal<T> goal);
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+
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+ <T extends Mob> void removeAllGoals(T mob);
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+
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+ <T extends Mob> void removeAllGoals(T mob, GoalType type);
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+
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+ <T extends Mob> void removeGoal(T mob, GoalKey<T> key);
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+
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+ <T extends Mob> boolean hasGoal(T mob, GoalKey<T> key);
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+
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+ <T extends Mob> @Nullable Goal<T> getGoal(T mob, GoalKey<T> key);
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+
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+ <T extends Mob> Collection<Goal<T>> getGoals(T mob, GoalKey<T> key);
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+
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+ <T extends Mob> Collection<Goal<T>> getAllGoals(T mob);
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+
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+ <T extends Mob> Collection<Goal<T>> getAllGoals(T mob, GoalType type);
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+
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+ <T extends Mob> Collection<Goal<T>> getAllGoalsWithout(T mob, GoalType type);
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+
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+ <T extends Mob> Collection<Goal<T>> getRunningGoals(T mob);
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+
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+ <T extends Mob> Collection<Goal<T>> getRunningGoals(T mob, GoalType type);
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+
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+ <T extends Mob> Collection<Goal<T>> getRunningGoalsWithout(T mob, GoalType type);
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+}
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diff --git a/src/main/java/org/bukkit/Bukkit.java b/src/main/java/org/bukkit/Bukkit.java
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index 54626b927444ab3fc6b7d9ac9e326ff368b0cd25..1a671331ec4ab21430d7d52e9a4f45510ef39944 100644
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--- a/src/main/java/org/bukkit/Bukkit.java
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+++ b/src/main/java/org/bukkit/Bukkit.java
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@@ -2560,6 +2560,16 @@ public final class Bukkit {
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public static boolean isStopping() {
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return server.isStopping();
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}
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+
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+ /**
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+ * Returns the {@link com.destroystokyo.paper.entity.ai.MobGoals} manager
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+ *
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+ * @return the mob goals manager
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+ */
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+ @NotNull
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+ public static com.destroystokyo.paper.entity.ai.MobGoals getMobGoals() {
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+ return server.getMobGoals();
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+ }
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// Paper end
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@NotNull
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diff --git a/src/main/java/org/bukkit/Server.java b/src/main/java/org/bukkit/Server.java
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index 0fa9510db6c81e2c712090e1fc7fc56305af8892..7dbd9b32e96c015e3ed757ea0fa7e2bfcf4af85e 100644
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--- a/src/main/java/org/bukkit/Server.java
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+++ b/src/main/java/org/bukkit/Server.java
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@@ -2232,5 +2232,13 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
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* @return true if server is in the process of being shutdown
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*/
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boolean isStopping();
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+
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+ /**
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+ * Returns the {@link com.destroystokyo.paper.entity.ai.MobGoals} manager
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+ *
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+ * @return the mob goals manager
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+ */
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+ @NotNull
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+ com.destroystokyo.paper.entity.ai.MobGoals getMobGoals();
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// Paper end
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}
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