From e811159df149fa177058864e2f1639d13496998e 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/server/AxisAlignedBB.java b/src/main/java/net/minecraft/server/AxisAlignedBB.java index 4f60b931a1..c950139c0f 100644 --- a/src/main/java/net/minecraft/server/AxisAlignedBB.java +++ b/src/main/java/net/minecraft/server/AxisAlignedBB.java @@ -108,6 +108,7 @@ 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; @@ -137,6 +138,12 @@ 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; @@ -194,6 +201,7 @@ 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 c(vec3d); } // Paper - OBFHELPER public boolean c(Vec3D vec3d) { return this.e(vec3d.x, vec3d.y, vec3d.z); } @@ -226,6 +234,7 @@ 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/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java index 0f24805210..2e8aedf5fb 100644 --- a/src/main/java/net/minecraft/server/Entity.java +++ b/src/main/java/net/minecraft/server/Entity.java @@ -1475,6 +1475,7 @@ 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()); @@ -2126,6 +2127,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke return this.getPassengers().size() < 1; } + public final float getCollisionBorderSize() { return aV(); } // Paper - OBFHELPER public float aV() { return 0.0F; } diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java index a63edeeb95..43b8a722d0 100644 --- a/src/main/java/net/minecraft/server/EntityLiving.java +++ b/src/main/java/net/minecraft/server/EntityLiving.java @@ -3305,6 +3305,37 @@ 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.notSpectator().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/server/IEntitySelector.java b/src/main/java/net/minecraft/server/IEntitySelector.java index c1f462d9d3..498f381099 100644 --- a/src/main/java/net/minecraft/server/IEntitySelector.java +++ b/src/main/java/net/minecraft/server/IEntitySelector.java @@ -18,6 +18,7 @@ public final class IEntitySelector { public static final Predicate e = (entity) -> { return !(entity instanceof EntityHuman) || !entity.isSpectator() && !((EntityHuman) entity).isCreative(); }; + public static Predicate notSpectator() { return f; } // Paper - OBFHELPER public static final Predicate f = (entity) -> { return !entity.isSpectator(); }; diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java index 6f4c6c5891..b27fd44dcd 100644 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java @@ -215,6 +215,33 @@ 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 -- 2.24.1