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/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java index 1e5930f5ae75b82abf6ea2a50558449fb667016f..e9b535622d6c33083c575ee4691598014dba0e2c 100644 --- a/src/main/java/net/minecraft/world/entity/Entity.java +++ b/src/main/java/net/minecraft/world/entity/Entity.java @@ -1504,6 +1504,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, ne 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()); @@ -2149,6 +2150,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, ne 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/world/entity/EntityLiving.java b/src/main/java/net/minecraft/world/entity/EntityLiving.java index 6ada2fe58966553b52a8a890088c78d5ea0dfd73..c98562980ca02c85f2f777a31983c164f2dd5e1e 100644 --- a/src/main/java/net/minecraft/world/entity/EntityLiving.java +++ b/src/main/java/net/minecraft/world/entity/EntityLiving.java @@ -108,6 +108,7 @@ import net.minecraft.world.level.storage.loot.parameters.LootContextParameterSet import net.minecraft.world.level.storage.loot.parameters.LootContextParameters; import net.minecraft.world.phys.AxisAlignedBB; import net.minecraft.world.phys.MovingObjectPosition; +import net.minecraft.world.phys.MovingObjectPositionEntity; import net.minecraft.world.phys.Vec3D; import net.minecraft.world.scores.ScoreboardTeam; import org.apache.logging.log4j.Logger; @@ -3637,6 +3638,37 @@ 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 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 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/world/entity/IEntitySelector.java b/src/main/java/net/minecraft/world/entity/IEntitySelector.java index 4776a47566aac487dc77fd6b4b9b42b95974e31a..cb5cda5e6497edeb801ef712f9bd8823cb055750 100644 --- a/src/main/java/net/minecraft/world/entity/IEntitySelector.java +++ b/src/main/java/net/minecraft/world/entity/IEntitySelector.java @@ -22,6 +22,7 @@ public final class IEntitySelector { public static final Predicate e = (entity) -> { return !(entity instanceof EntityHuman) || !entity.isSpectator() && !((EntityHuman) entity).isCreative(); }; + public static Predicate canAITarget() { return f; } // Paper - OBFHELPER public static final Predicate f = (entity) -> { return !(entity instanceof EntityHuman) || !entity.isSpectator() && !((EntityHuman) entity).isCreative() && entity.world.getDifficulty() != EnumDifficulty.PEACEFUL; }; diff --git a/src/main/java/net/minecraft/world/phys/AxisAlignedBB.java b/src/main/java/net/minecraft/world/phys/AxisAlignedBB.java index 3941dd33da4b5c09d0087143f1d8a2d76fc18792..62513c812b497bb9d8dafe1d9c2f574059aebf15 100644 --- a/src/main/java/net/minecraft/world/phys/AxisAlignedBB.java +++ b/src/main/java/net/minecraft/world/phys/AxisAlignedBB.java @@ -116,6 +116,7 @@ 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; @@ -145,6 +146,12 @@ 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; @@ -204,6 +211,7 @@ 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); } @@ -237,6 +245,7 @@ public class AxisAlignedBB { return this.g(-d0); } + public final Optional calculateIntercept(Vec3D vec3d, Vec3D vec3d1) { return b(vec3d, vec3d1); } // Paper - OBFHELPER public Optional b(Vec3D vec3d, Vec3D vec3d1) { double[] adouble = new double[]{1.0D}; double d0 = vec3d1.x - vec3d.x; diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java index c692626b747008a5418ecabf550fc67e3b676f5b..ff586b8366a6298f1906551b068e8abb26fcabc7 100644 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java @@ -1,6 +1,7 @@ package org.bukkit.craftbukkit.entity; import com.destroystokyo.paper.block.TargetBlockInfo; +import com.destroystokyo.paper.entity.TargetEntityInfo; import com.google.common.base.Preconditions; import com.google.common.collect.Sets; import java.util.ArrayList; @@ -42,8 +43,11 @@ import net.minecraft.world.entity.projectile.EntityThrownExpBottle; import net.minecraft.world.entity.projectile.EntityThrownTrident; import net.minecraft.world.entity.projectile.EntityTippedArrow; import net.minecraft.world.entity.projectile.EntityWitherSkull; +import net.minecraft.world.level.RayTrace; import net.minecraft.world.phys.MovingObjectPosition; import net.minecraft.world.phys.MovingObjectPositionBlock; +import net.minecraft.world.phys.MovingObjectPositionEntity; +import net.minecraft.world.phys.Vec3D; import org.apache.commons.lang.Validate; import org.bukkit.FluidCollisionMode; import org.bukkit.Location; @@ -227,6 +231,33 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity { new TargetBlockInfo(CraftBlock.at(getHandle().world, ((MovingObjectPositionBlock)rayTrace).getBlockPosition()), MCUtil.toBukkitBlockFace(((MovingObjectPositionBlock)rayTrace).getDirection())); } + + public Entity getTargetEntity(int maxDistance, boolean ignoreBlocks) { + MovingObjectPositionEntity rayTrace = rayTraceEntity(maxDistance, ignoreBlocks); + return rayTrace == null ? null : rayTrace.getEntity().getBukkitEntity(); + } + + public TargetEntityInfo getTargetEntityInfo(int maxDistance, boolean ignoreBlocks) { + MovingObjectPositionEntity rayTrace = rayTraceEntity(maxDistance, ignoreBlocks); + return rayTrace == null ? null : new TargetEntityInfo(rayTrace.getEntity().getBukkitEntity(), new org.bukkit.util.Vector(rayTrace.getPos().x, rayTrace.getPos().y, rayTrace.getPos().z)); + } + + public MovingObjectPositionEntity rayTraceEntity(int maxDistance, boolean ignoreBlocks) { + MovingObjectPositionEntity rayTrace = getHandle().getTargetEntity(maxDistance); + if (rayTrace == null) { + return null; + } + if (!ignoreBlocks) { + MovingObjectPosition rayTraceBlocks = getHandle().getRayTrace(maxDistance, RayTrace.FluidCollisionOption.NONE); + if (rayTraceBlocks != null) { + Vec3D eye = getHandle().getEyePosition(1.0F); + if (eye.distanceSquared(rayTraceBlocks.getPos()) <= eye.distanceSquared(rayTrace.getPos())) { + return null; + } + } + } + return rayTrace; + } // Paper end @Override