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Paper/Spigot-Server-Patches/0334-Add-LivingEntity-getTargetEntity.patch
Aikar a70924789b
[Auto] Updated Upstream (CraftBukkit) 
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

CraftBukkit Changes:
6917945f0 SPIGOT-6289: Fix setting entity equipment
2020-12-22 16:02:19 -05:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: BillyGalbreath <Blake.Galbreath@GMail.com>
Date: Sat, 22 Sep 2018 00:33:08 -0500
Subject: [PATCH] Add LivingEntity#getTargetEntity
diff --git a/src/main/java/net/minecraft/server/AxisAlignedBB.java b/src/main/java/net/minecraft/server/AxisAlignedBB.java
index 02c09f39848399a86d46bd17569b4f01a7b5ab1f..ed9b2f9adfecdc6d1b9925579ec510657adde11f 100644
--- a/src/main/java/net/minecraft/server/AxisAlignedBB.java
+++ b/src/main/java/net/minecraft/server/AxisAlignedBB.java
@@ -112,6 +112,7 @@ public class AxisAlignedBB {
return this.b(vec3d.x, vec3d.y, vec3d.z);
}
+ public final AxisAlignedBB expand(double x, double y, double z) { return b(x, y, z); } // Paper - OBFHELPER
public AxisAlignedBB b(double d0, double d1, double d2) {
double d3 = this.minX;
double d4 = this.minY;
@@ -141,6 +142,12 @@ public class AxisAlignedBB {
return new AxisAlignedBB(d3, d4, d5, d6, d7, d8);
}
+ // Paper start
+ public AxisAlignedBB grow(double d0) {
+ return grow(d0, d0, d0);
+ }
+ // Paper end
+
public AxisAlignedBB grow(double d0, double d1, double d2) {
double d3 = this.minX - d0;
double d4 = this.minY - d1;
@@ -200,6 +207,7 @@ public class AxisAlignedBB {
return this.minX < d3 && this.maxX > d0 && this.minY < d4 && this.maxY > d1 && this.minZ < d5 && this.maxZ > d2;
}
+ public final boolean contains(Vec3D vec3d) { return d(vec3d); } // Paper - OBFHELPER
public boolean d(Vec3D vec3d) {
return this.e(vec3d.x, vec3d.y, vec3d.z);
}
@@ -233,6 +241,7 @@ public class AxisAlignedBB {
return this.g(-d0);
}
+ public final Optional<Vec3D> calculateIntercept(Vec3D vec3d, Vec3D vec3d1) { return b(vec3d, vec3d1); } // Paper - OBFHELPER
public Optional<Vec3D> b(Vec3D vec3d, Vec3D vec3d1) {
double[] adouble = new double[]{1.0D};
double d0 = vec3d1.x - vec3d.x;
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index ea0525ca0b52b3270b868cc8a526c7139baa4db8..f999920fcc61109d2359ada18fb4272e25c2fcc7 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -1418,6 +1418,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
return this.c(f - 90.0F, f1);
}
+ public final Vec3D getEyePosition(float partialTicks) { return j(partialTicks); } // Paper - OBFHELPER
public final Vec3D j(float f) {
if (f == 1.0F) {
return new Vec3D(this.locX(), this.getHeadY(), this.locZ());
@@ -2063,6 +2064,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
return this.getPassengers().size() < 1;
}
+ public final float getCollisionBorderSize() { return bg(); } // Paper - OBFHELPER
public float bg() {
return 0.0F;
}
diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
index c0703015ce72c65006e212ca1a6dbd3ce3c6a782..a68d9d709a7413f40f927c20bd53311b558d9541 100644
--- a/src/main/java/net/minecraft/server/EntityLiving.java
+++ b/src/main/java/net/minecraft/server/EntityLiving.java
@@ -3538,6 +3538,37 @@ public abstract class EntityLiving extends Entity {
return world.rayTrace(raytrace);
}
+ public MovingObjectPositionEntity getTargetEntity(int maxDistance) {
+ if (maxDistance < 1 || maxDistance > 120) {
+ throw new IllegalArgumentException("maxDistance must be between 1-120");
+ }
+
+ Vec3D start = this.getEyePosition(1.0F);
+ Vec3D direction = this.getLookDirection();
+ Vec3D end = start.add(direction.x * maxDistance, direction.y * maxDistance, direction.z * maxDistance);
+
+ List<Entity> entityList = world.getEntities(this, getBoundingBox().expand(direction.x * maxDistance, direction.y * maxDistance, direction.z * maxDistance).grow(1.0D, 1.0D, 1.0D), IEntitySelector.canAITarget().and(Entity::isInteractable));
+
+ double distance = 0.0D;
+ MovingObjectPositionEntity result = null;
+
+ for (Entity entity : entityList) {
+ AxisAlignedBB aabb = entity.getBoundingBox().grow((double) entity.getCollisionBorderSize());
+ Optional<Vec3D> rayTraceResult = aabb.calculateIntercept(start, end);
+
+ if (rayTraceResult.isPresent()) {
+ Vec3D rayTrace = rayTraceResult.get();
+ double distanceTo = start.distanceSquared(rayTrace);
+ if (distanceTo < distance || distance == 0.0D) {
+ result = new MovingObjectPositionEntity(entity, rayTrace);
+ distance = distanceTo;
+ }
+ }
+ }
+
+ return result;
+ }
+
public int shieldBlockingDelay = world.paperConfig.shieldBlockingDelay;
public int getShieldBlockingDelay() {
diff --git a/src/main/java/net/minecraft/server/IEntitySelector.java b/src/main/java/net/minecraft/server/IEntitySelector.java
index 863f4464c688912b3e0ce61cbbbf263e38a3af4b..3d54b7a4bf102dfc568e782706f67e4b5269eaf1 100644
--- a/src/main/java/net/minecraft/server/IEntitySelector.java
+++ b/src/main/java/net/minecraft/server/IEntitySelector.java
@@ -17,6 +17,7 @@ public final class IEntitySelector {
public static final Predicate<Entity> e = (entity) -> {
return !(entity instanceof EntityHuman) || !entity.isSpectator() && !((EntityHuman) entity).isCreative();
};
+ public static Predicate<Entity> canAITarget() { return f; } // Paper - OBFHELPER
public static final Predicate<Entity> f = (entity) -> {
return !(entity instanceof EntityHuman) || !entity.isSpectator() && !((EntityHuman) entity).isCreative() && entity.world.getDifficulty() != EnumDifficulty.PEACEFUL;
};
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
index 3ec331f51bb305a82d2a12423c28d1f2e8ab8365..2fccc6a8a3dcf96e8ec714c2f7fa2f62af60cb76 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
@@ -221,6 +221,33 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
new com.destroystokyo.paper.block.TargetBlockInfo(org.bukkit.craftbukkit.block.CraftBlock.at(getHandle().world, ((net.minecraft.server.MovingObjectPositionBlock)rayTrace).getBlockPosition()),
net.minecraft.server.MCUtil.toBukkitBlockFace(((net.minecraft.server.MovingObjectPositionBlock)rayTrace).getDirection()));
}
+
+ public Entity getTargetEntity(int maxDistance, boolean ignoreBlocks) {
+ net.minecraft.server.MovingObjectPositionEntity rayTrace = rayTraceEntity(maxDistance, ignoreBlocks);
+ return rayTrace == null ? null : rayTrace.getEntity().getBukkitEntity();
+ }
+
+ public com.destroystokyo.paper.entity.TargetEntityInfo getTargetEntityInfo(int maxDistance, boolean ignoreBlocks) {
+ net.minecraft.server.MovingObjectPositionEntity rayTrace = rayTraceEntity(maxDistance, ignoreBlocks);
+ return rayTrace == null ? null : new com.destroystokyo.paper.entity.TargetEntityInfo(rayTrace.getEntity().getBukkitEntity(), new org.bukkit.util.Vector(rayTrace.getPos().x, rayTrace.getPos().y, rayTrace.getPos().z));
+ }
+
+ public net.minecraft.server.MovingObjectPositionEntity rayTraceEntity(int maxDistance, boolean ignoreBlocks) {
+ net.minecraft.server.MovingObjectPositionEntity rayTrace = getHandle().getTargetEntity(maxDistance);
+ if (rayTrace == null) {
+ return null;
+ }
+ if (!ignoreBlocks) {
+ net.minecraft.server.MovingObjectPosition rayTraceBlocks = getHandle().getRayTrace(maxDistance, net.minecraft.server.RayTrace.FluidCollisionOption.NONE);
+ if (rayTraceBlocks != null) {
+ net.minecraft.server.Vec3D eye = getHandle().getEyePosition(1.0F);
+ if (eye.distanceSquared(rayTraceBlocks.getPos()) <= eye.distanceSquared(rayTrace.getPos())) {
+ return null;
+ }
+ }
+ }
+ return rayTrace;
+ }
// Paper end
@Override
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