From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: BillyGalbreath Date: Sat, 22 Sep 2018 00:33:08 -0500 Subject: [PATCH] Add LivingEntity#getTargetEntity diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java index 3c7dd373c557f3ceef0173e415d3d6c310fa9e95..5a638da349424a9d3bc5df87d81ba268b8052568 100644 --- a/src/main/java/net/minecraft/world/entity/LivingEntity.java +++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java @@ -116,6 +116,7 @@ import net.minecraft.world.level.storage.loot.LootTable; import net.minecraft.world.level.storage.loot.parameters.LootContextParamSets; import net.minecraft.world.level.storage.loot.parameters.LootContextParams; import net.minecraft.world.phys.AABB; +import net.minecraft.world.phys.EntityHitResult; import net.minecraft.world.phys.HitResult; import net.minecraft.world.phys.Vec3; import net.minecraft.world.scores.PlayerTeam; @@ -3889,6 +3890,38 @@ public abstract class LivingEntity extends Entity implements Attackable { return this.level().clip(raytrace); } + public @Nullable EntityHitResult getTargetEntity(int maxDistance) { + if (maxDistance < 1 || maxDistance > 120) { + throw new IllegalArgumentException("maxDistance must be between 1-120"); + } + + Vec3 start = this.getEyePosition(1.0F); + Vec3 direction = this.getLookAngle(); + Vec3 end = start.add(direction.x * maxDistance, direction.y * maxDistance, direction.z * maxDistance); + + List 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)); + + double distance = 0.0D; + EntityHitResult result = null; + + for (Entity entity : entityList) { + final double inflationAmount = (double) entity.getPickRadius(); + AABB aabb = entity.getBoundingBox().inflate(inflationAmount, inflationAmount, inflationAmount); + Optional rayTraceResult = aabb.clip(start, end); + + if (rayTraceResult.isPresent()) { + Vec3 rayTrace = rayTraceResult.get(); + double distanceTo = start.distanceToSqr(rayTrace); + if (distanceTo < distance || distance == 0.0D) { + result = new EntityHitResult(entity, rayTrace); + distance = distanceTo; + } + } + } + + return result; + } + public int shieldBlockingDelay = this.level().paperConfig().misc.shieldBlockingDelay; public int getShieldBlockingDelay() { diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java index 540422f3148a92a25de8398c8616de307c85d0ae..9e15c5e2adfb46ffa3548b3a2eda225de4c44fb5 100644 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java @@ -1,5 +1,6 @@ package org.bukkit.craftbukkit.entity; +import com.destroystokyo.paper.entity.TargetEntityInfo; import com.google.common.base.Preconditions; import com.google.common.collect.Sets; import java.util.ArrayList; @@ -226,6 +227,39 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity { } return null; } + + public Entity getTargetEntity(int maxDistance, boolean ignoreBlocks) { + net.minecraft.world.phys.EntityHitResult rayTrace = rayTraceEntity(maxDistance, ignoreBlocks); + return rayTrace == null ? null : rayTrace.getEntity().getBukkitEntity(); + } + + public TargetEntityInfo getTargetEntityInfo(int maxDistance, boolean ignoreBlocks) { + net.minecraft.world.phys.EntityHitResult rayTrace = rayTraceEntity(maxDistance, ignoreBlocks); + return rayTrace == null ? null : new TargetEntityInfo(rayTrace.getEntity().getBukkitEntity(), new org.bukkit.util.Vector(rayTrace.getLocation().x, rayTrace.getLocation().y, rayTrace.getLocation().z)); + } + + @Override + public RayTraceResult rayTraceEntities(int maxDistance, boolean ignoreBlocks) { + net.minecraft.world.phys.EntityHitResult rayTrace = this.rayTraceEntity(maxDistance, ignoreBlocks); + return rayTrace == null ? null : new org.bukkit.util.RayTraceResult(org.bukkit.craftbukkit.util.CraftVector.toBukkit(rayTrace.getLocation()), rayTrace.getEntity().getBukkitEntity()); + } + + public net.minecraft.world.phys.EntityHitResult rayTraceEntity(int maxDistance, boolean ignoreBlocks) { + net.minecraft.world.phys.EntityHitResult rayTrace = getHandle().getTargetEntity(maxDistance); + if (rayTrace == null) { + return null; + } + if (!ignoreBlocks) { + net.minecraft.world.phys.HitResult rayTraceBlocks = getHandle().getRayTrace(maxDistance, net.minecraft.world.level.ClipContext.Fluid.NONE); + if (rayTraceBlocks != null) { + net.minecraft.world.phys.Vec3 eye = getHandle().getEyePosition(1.0F); + if (eye.distanceToSqr(rayTraceBlocks.getLocation()) <= eye.distanceToSqr(rayTrace.getLocation())) { + return null; + } + } + } + return rayTrace; + } // Paper end @Override