#519: Add ArrowBodyCountChangeEvent

By: Martoph <sager1018@gmail.com>

paper-api/src/main/java/org/bukkit/entity/LivingEntity.java

@@ -192,6 +192,34 @@ public interface LivingEntity extends Attributable, Damageable, ProjectileSource
      */
     public void setMaximumAir(int ticks);
 
+    /**
+     * Gets the time in ticks until the next arrow leaves the entity's body.
+     *
+     * @return ticks until arrow leaves
+     */
+    public int getArrowCooldown();
+
+    /**
+     * Sets the time in ticks until the next arrow leaves the entity's body.
+     *
+     * @param ticks time until arrow leaves
+     */
+    public void setArrowCooldown(int ticks);
+
+    /**
+     * Gets the amount of arrows in an entity's body.
+     *
+     * @return amount of arrows in body
+     */
+    public int getArrowsInBody();
+
+    /**
+     * Set the amount of arrows in the entity's body.
+     *
+     * @param count amount of arrows in entity's body
+     */
+    public void setArrowsInBody(int count);
+
     /**
      * Returns the living entity's current maximum no damage ticks.
      * <p>

paper-api/src/main/java/org/bukkit/event/entity/ArrowBodyCountChangeEvent.java

@@ -0,0 +1,87 @@
+package org.bukkit.event.entity;
+
+import com.google.common.base.Preconditions;
+import org.bukkit.entity.LivingEntity;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Called when an arrow enters or exists an entity's body.
+ */
+public class ArrowBodyCountChangeEvent extends EntityEvent implements Cancellable {
+
+    private static final HandlerList handlers = new HandlerList();
+    //
+    private boolean cancelled;
+    private final boolean isReset;
+    private final int oldAmount;
+    private int newAmount;
+
+    public ArrowBodyCountChangeEvent(@NotNull LivingEntity entity, int oldAmount, int newAmount, boolean isReset) {
+        super(entity);
+
+        this.oldAmount = oldAmount;
+        this.newAmount = newAmount;
+        this.isReset = isReset;
+    }
+
+    /**
+     * Whether the event was called because the entity was reset.
+     *
+     * @return was reset
+     */
+    public boolean isReset() {
+        return isReset;
+    }
+
+    /**
+     * Gets the old amount of arrows in the entity's body.
+     *
+     * @return amount of arrows
+     */
+    public int getOldAmount() {
+        return oldAmount;
+    }
+
+    /**
+     * Get the new amount of arrows in the entity's body.
+     *
+     * @return amount of arrows
+     */
+    public int getNewAmount() {
+        return newAmount;
+    }
+
+    /**
+     * Sets the final amount of arrows in the entity's body.
+     *
+     * @param newAmount amount of arrows
+     */
+    public void setNewAmount(int newAmount) {
+        Preconditions.checkArgument(newAmount >= 0, "New arrow amount must be >= 0");
+        this.newAmount = newAmount;
+    }
+
+    @Override
+    @NotNull
+    public LivingEntity getEntity() {
+        return (LivingEntity) entity;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    @Override
+    public void setCancelled(boolean cancel) {
+        this.cancelled = cancel;
+    }
+
+    @Override
+    @NotNull
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+}