mirror of https://github.com/PaperMC/Paper.git
109 lines
5.4 KiB
Diff
109 lines
5.4 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: BillyGalbreath <Blake.Galbreath@GMail.com>
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Date: Sat, 22 Sep 2018 00:33:08 -0500
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Subject: [PATCH] Add LivingEntity#getTargetEntity
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diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
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index 21d2c43a97122025edd91662e39d44cc867593a3..bac78415e34d41e3a5de482b86185f2202ecf068 100644
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--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
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+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
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@@ -121,6 +121,7 @@ import net.minecraft.world.level.storage.loot.LootTable;
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import net.minecraft.world.level.storage.loot.parameters.LootContextParamSets;
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import net.minecraft.world.level.storage.loot.parameters.LootContextParams;
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import net.minecraft.world.phys.AABB;
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+import net.minecraft.world.phys.EntityHitResult;
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import net.minecraft.world.phys.HitResult;
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import net.minecraft.world.phys.Vec3;
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import net.minecraft.world.scores.PlayerTeam;
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@@ -4002,6 +4003,38 @@ public abstract class LivingEntity extends Entity implements Attackable {
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return this.level().clip(raytrace);
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}
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+ public @Nullable EntityHitResult getTargetEntity(int maxDistance) {
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+ if (maxDistance < 1 || maxDistance > 120) {
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+ throw new IllegalArgumentException("maxDistance must be between 1-120");
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+ }
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+
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+ Vec3 start = this.getEyePosition(1.0F);
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+ Vec3 direction = this.getLookAngle();
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+ Vec3 end = start.add(direction.x * maxDistance, direction.y * maxDistance, direction.z * maxDistance);
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+
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+ List<Entity> entityList = this.level().getEntities(this, getBoundingBox().expandTowards(direction.x * maxDistance, direction.y * maxDistance, direction.z * maxDistance).inflate(1.0D, 1.0D, 1.0D), EntitySelector.NO_SPECTATORS.and(Entity::isPickable));
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+
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+ double distance = 0.0D;
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+ EntityHitResult result = null;
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+
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+ for (Entity entity : entityList) {
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+ final double inflationAmount = (double) entity.getPickRadius();
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+ AABB aabb = entity.getBoundingBox().inflate(inflationAmount, inflationAmount, inflationAmount);
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+ Optional<Vec3> rayTraceResult = aabb.clip(start, end);
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+
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+ if (rayTraceResult.isPresent()) {
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+ Vec3 rayTrace = rayTraceResult.get();
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+ double distanceTo = start.distanceToSqr(rayTrace);
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+ if (distanceTo < distance || distance == 0.0D) {
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+ result = new EntityHitResult(entity, rayTrace);
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+ distance = distanceTo;
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+ }
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+ }
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+ }
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+
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+ return result;
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+ }
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+
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public int shieldBlockingDelay = this.level().paperConfig().misc.shieldBlockingDelay;
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public int getShieldBlockingDelay() {
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
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index fa2cb4820698d4f0f317d7abd14216bdd54143a7..b2172a8c70ab77ba7c98b6b2b27595765d7eba11 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
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@@ -1,5 +1,6 @@
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package org.bukkit.craftbukkit.entity;
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+import com.destroystokyo.paper.entity.TargetEntityInfo;
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import com.google.common.base.Preconditions;
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import com.google.common.collect.Sets;
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import java.util.ArrayList;
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@@ -225,6 +226,39 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
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}
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return null;
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}
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+
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+ public Entity getTargetEntity(int maxDistance, boolean ignoreBlocks) {
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+ net.minecraft.world.phys.EntityHitResult rayTrace = rayTraceEntity(maxDistance, ignoreBlocks);
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+ return rayTrace == null ? null : rayTrace.getEntity().getBukkitEntity();
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+ }
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+
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+ public TargetEntityInfo getTargetEntityInfo(int maxDistance, boolean ignoreBlocks) {
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+ net.minecraft.world.phys.EntityHitResult rayTrace = rayTraceEntity(maxDistance, ignoreBlocks);
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+ return rayTrace == null ? null : new TargetEntityInfo(rayTrace.getEntity().getBukkitEntity(), new org.bukkit.util.Vector(rayTrace.getLocation().x, rayTrace.getLocation().y, rayTrace.getLocation().z));
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+ }
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+
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+ @Override
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+ public RayTraceResult rayTraceEntities(int maxDistance, boolean ignoreBlocks) {
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+ net.minecraft.world.phys.EntityHitResult rayTrace = this.rayTraceEntity(maxDistance, ignoreBlocks);
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+ return rayTrace == null ? null : new org.bukkit.util.RayTraceResult(org.bukkit.craftbukkit.util.CraftVector.toBukkit(rayTrace.getLocation()), rayTrace.getEntity().getBukkitEntity());
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+ }
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+
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+ public net.minecraft.world.phys.EntityHitResult rayTraceEntity(int maxDistance, boolean ignoreBlocks) {
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+ net.minecraft.world.phys.EntityHitResult rayTrace = getHandle().getTargetEntity(maxDistance);
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+ if (rayTrace == null) {
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+ return null;
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+ }
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+ if (!ignoreBlocks) {
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+ net.minecraft.world.phys.HitResult rayTraceBlocks = getHandle().getRayTrace(maxDistance, net.minecraft.world.level.ClipContext.Fluid.NONE);
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+ if (rayTraceBlocks != null) {
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+ net.minecraft.world.phys.Vec3 eye = getHandle().getEyePosition(1.0F);
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+ if (eye.distanceToSqr(rayTraceBlocks.getLocation()) <= eye.distanceToSqr(rayTrace.getLocation())) {
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+ return null;
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+ }
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+ }
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+ }
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+ return rayTrace;
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+ }
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// Paper end
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@Override
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