From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: William Blake Galbreath Date: Tue, 11 Feb 2020 21:56:38 -0600 Subject: [PATCH] EntityMoveEvent diff --git a/src/main/java/io/papermc/paper/event/entity/EntityMoveEvent.java b/src/main/java/io/papermc/paper/event/entity/EntityMoveEvent.java new file mode 100644 index 0000000000000000000000000000000000000000..a5c017dc0392a4bbdccf33d9e963f96cbfbc0d9a --- /dev/null +++ b/src/main/java/io/papermc/paper/event/entity/EntityMoveEvent.java @@ -0,0 +1,140 @@ +package io.papermc.paper.event.entity; + +import com.google.common.base.Preconditions; +import org.bukkit.Location; +import org.bukkit.entity.LivingEntity; +import org.bukkit.event.Cancellable; +import org.bukkit.event.HandlerList; +import org.bukkit.event.entity.EntityEvent; +import org.jetbrains.annotations.NotNull; + +/** + * Holds information for living entity movement events + */ +public class EntityMoveEvent extends EntityEvent implements Cancellable { + private static final HandlerList handlers = new HandlerList(); + private boolean canceled; + private Location from; + private Location to; + + public EntityMoveEvent(@NotNull LivingEntity entity, @NotNull Location from, @NotNull Location to) { + super(entity); + this.from = from; + this.to = to; + } + + @Override + @NotNull + public LivingEntity getEntity() { + return (LivingEntity) entity; + } + + public boolean isCancelled() { + return canceled; + } + + public void setCancelled(boolean cancel) { + canceled = cancel; + } + + /** + * Gets the location this entity moved from + * + * @return Location the entity moved from + */ + @NotNull + public Location getFrom() { + return from; + } + + /** + * Sets the location to mark as where the entity moved from + * + * @param from New location to mark as the entity's previous location + */ + public void setFrom(@NotNull Location from) { + validateLocation(from); + this.from = from; + } + + /** + * Gets the location this entity moved to + * + * @return Location the entity moved to + */ + @NotNull + public Location getTo() { + return to; + } + + /** + * Sets the location that this entity will move to + * + * @param to New Location this entity will move to + */ + public void setTo(@NotNull Location to) { + validateLocation(to); + this.to = to; + } + + /** + * Check if the entity has changed position (even within the same block) in the event + * + * @return whether the entity has changed position or not + */ + public boolean hasChangedPosition() { + return hasExplicitlyChangedPosition() || !from.getWorld().equals(to.getWorld()); + } + + /** + * Check if the entity has changed position (even within the same block) in the event, disregarding a possible world change + * + * @return whether the entity has changed position or not + */ + public boolean hasExplicitlyChangedPosition() { + return from.getX() != to.getX() || from.getY() != to.getY() || from.getZ() != to.getZ(); + } + + /** + * Check if the entity has moved to a new block in the event + * + * @return whether the entity has moved to a new block or not + */ + public boolean hasChangedBlock() { + return hasExplicitlyChangedBlock() || !from.getWorld().equals(to.getWorld()); + } + + /** + * Check if the entity has moved to a new block in the event, disregarding a possible world change + * + * @return whether the entity has moved to a new block or not + */ + public boolean hasExplicitlyChangedBlock() { + return from.getBlockX() != to.getBlockX() || from.getBlockY() != to.getBlockY() || from.getBlockZ() != to.getBlockZ(); + } + + /** + * Check if the entity has changed orientation in the event + * + * @return whether the entity has changed orientation or not + */ + public boolean hasChangedOrientation() { + return from.getPitch() != to.getPitch() || from.getYaw() != to.getYaw(); + } + + private void validateLocation(@NotNull Location loc) { + Preconditions.checkArgument(loc != null, "Cannot use null location!"); + Preconditions.checkArgument(loc.getWorld() != null, "Cannot use null location with null world!"); + } + + @Override + @NotNull + public HandlerList getHandlers() { + return handlers; + } + + @NotNull + public static HandlerList getHandlerList() { + return handlers; + } +}