From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: MiniDigger Date: Fri, 3 Jan 2020 16:24:46 +0100 Subject: [PATCH] Add Mob Goal API diff --git a/src/main/java/com/destroystokyo/paper/entity/ai/Goal.java b/src/main/java/com/destroystokyo/paper/entity/ai/Goal.java new file mode 100644 index 0000000000000000000000000000000000000000..88f64a84c6b81246a4936e37c9f0410eefc847fd --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/entity/ai/Goal.java @@ -0,0 +1,63 @@ +package com.destroystokyo.paper.entity.ai; + +import java.util.EnumSet; +import org.bukkit.entity.Mob; +import org.jspecify.annotations.NullMarked; + +/** + * Represents an AI goal of an entity + */ +@NullMarked +public interface Goal { + + /** + * Checks if this goal should be activated + * + * @return if this goal should be activated + */ + boolean shouldActivate(); + + /** + * Checks if this goal should stay active, defaults to {@link Goal#shouldActivate()} + * + * @return if this goal should stay active + */ + default boolean shouldStayActive() { + return this.shouldActivate(); + } + + /** + * Called when this goal gets activated + */ + default void start() { + } + + /** + * Called when this goal gets stopped + */ + default void stop() { + } + + /** + * Called each tick the goal is activated + */ + default void tick() { + } + + /** + * A unique key that identifies this type of goal. Plugins should use their own namespace, not the minecraft + * namespace. Additionally, this key also specifies to what mobs this goal can be applied to + * + * @return the goal key + */ + GoalKey getKey(); + + /** + * Returns a list of all applicable flags for this goal.
+ *

+ * This method is only called on construction. + * + * @return the subtypes. + */ + EnumSet getTypes(); +} diff --git a/src/main/java/com/destroystokyo/paper/entity/ai/GoalKey.java b/src/main/java/com/destroystokyo/paper/entity/ai/GoalKey.java new file mode 100644 index 0000000000000000000000000000000000000000..fb626065c642a3f43075f2ae751419e23431763c --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/entity/ai/GoalKey.java @@ -0,0 +1,59 @@ +package com.destroystokyo.paper.entity.ai; + +import com.google.common.base.Objects; +import java.util.StringJoiner; +import org.bukkit.NamespacedKey; +import org.bukkit.entity.Mob; +import org.jspecify.annotations.NullMarked; +import org.jspecify.annotations.Nullable; + +/** + * Used to identify a Goal. Consists of a {@link NamespacedKey} and the type of mob the goal can be applied to + * + * @param the type of mob the goal can be applied to + */ +@NullMarked +public final class GoalKey { + + private final Class entityClass; + private final NamespacedKey namespacedKey; + + private GoalKey(Class entityClass, NamespacedKey namespacedKey) { + this.entityClass = entityClass; + this.namespacedKey = namespacedKey; + } + + public Class getEntityClass() { + return this.entityClass; + } + + public NamespacedKey getNamespacedKey() { + return this.namespacedKey; + } + + @Override + public boolean equals(@Nullable Object o) { + if (this == o) return true; + if (o == null || this.getClass() != o.getClass()) return false; + GoalKey goalKey = (GoalKey) o; + return Objects.equal(this.entityClass, goalKey.entityClass) && + Objects.equal(this.namespacedKey, goalKey.namespacedKey); + } + + @Override + public int hashCode() { + return Objects.hashCode(this.entityClass, this.namespacedKey); + } + + @Override + public String toString() { + return new StringJoiner(", ", GoalKey.class.getSimpleName() + "[", "]") + .add("entityClass=" + this.entityClass) + .add("namespacedKey=" + this.namespacedKey) + .toString(); + } + + public static GoalKey of(Class entityClass, NamespacedKey namespacedKey) { + return new GoalKey<>(entityClass, namespacedKey); + } +} diff --git a/src/main/java/com/destroystokyo/paper/entity/ai/GoalType.java b/src/main/java/com/destroystokyo/paper/entity/ai/GoalType.java new file mode 100644 index 0000000000000000000000000000000000000000..7024c8f484d2460abf3abfe65a29771d814105ec --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/entity/ai/GoalType.java @@ -0,0 +1,17 @@ +package com.destroystokyo.paper.entity.ai; + +/** + * Represents the subtype of a goal. Used by minecraft to disable certain types of goals if needed. + */ +public enum GoalType { + + MOVE, + LOOK, + JUMP, + TARGET, + /** + * Used to map vanilla goals, that are a behavior goal but don't have a type set... + */ + UNKNOWN_BEHAVIOR, + +} diff --git a/src/main/java/com/destroystokyo/paper/entity/ai/MobGoals.java b/src/main/java/com/destroystokyo/paper/entity/ai/MobGoals.java new file mode 100644 index 0000000000000000000000000000000000000000..0203e7efbb8c729ed378c53c2630a523b697314f --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/entity/ai/MobGoals.java @@ -0,0 +1,42 @@ +package com.destroystokyo.paper.entity.ai; + + +import java.util.Collection; +import org.bukkit.entity.Mob; +import org.jspecify.annotations.NullMarked; +import org.jspecify.annotations.Nullable; + +/** + * Represents a part of the "brain" of a mob. It tracks all tasks (running or not), allows adding and removing goals + */ +@NullMarked +public interface MobGoals { + + void addGoal(T mob, int priority, Goal goal); + + void removeGoal(T mob, Goal goal); + + void removeAllGoals(T mob); + + void removeAllGoals(T mob, GoalType type); + + void removeGoal(T mob, GoalKey key); + + boolean hasGoal(T mob, GoalKey key); + + @Nullable Goal getGoal(T mob, GoalKey key); + + Collection> getGoals(T mob, GoalKey key); + + Collection> getAllGoals(T mob); + + Collection> getAllGoals(T mob, GoalType type); + + Collection> getAllGoalsWithout(T mob, GoalType type); + + Collection> getRunningGoals(T mob); + + Collection> getRunningGoals(T mob, GoalType type); + + Collection> getRunningGoalsWithout(T mob, GoalType type); +} diff --git a/src/main/java/org/bukkit/Bukkit.java b/src/main/java/org/bukkit/Bukkit.java index 40d04b4ebecaa0cff8937451568d998a0dfae088..aca049c29cc7397a830883a45b4b24a33863e533 100644 --- a/src/main/java/org/bukkit/Bukkit.java +++ b/src/main/java/org/bukkit/Bukkit.java @@ -2584,6 +2584,16 @@ public final class Bukkit { public static boolean isStopping() { return server.isStopping(); } + + /** + * Returns the {@link com.destroystokyo.paper.entity.ai.MobGoals} manager + * + * @return the mob goals manager + */ + @NotNull + public static com.destroystokyo.paper.entity.ai.MobGoals getMobGoals() { + return server.getMobGoals(); + } // Paper end @NotNull diff --git a/src/main/java/org/bukkit/Server.java b/src/main/java/org/bukkit/Server.java index 90509d2e4c61de29611312c0864ef7622072d540..89208165cc6b864a9273c364ba4b2d6d86e3c31f 100644 --- a/src/main/java/org/bukkit/Server.java +++ b/src/main/java/org/bukkit/Server.java @@ -2250,5 +2250,13 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi * @return true if server is in the process of being shutdown */ boolean isStopping(); + + /** + * Returns the {@link com.destroystokyo.paper.entity.ai.MobGoals} manager + * + * @return the mob goals manager + */ + @NotNull + com.destroystokyo.paper.entity.ai.MobGoals getMobGoals(); // Paper end }