159 Zeilen
8.3 KiB
Diff
159 Zeilen
8.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Paul Sauve <paul@technove.co>
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Date: Sat, 31 Oct 2020 18:43:02 -0500
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Subject: [PATCH] Strip raytracing for EntityLiving#hasLineOfSight
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The BlockGetter#clip method is very wasteful in both allocations,
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and in logic. While EntityLiving#hasLineOfSight provides static
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parameters for collisions with blocks and fluids, the method still does
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a lot of dynamic checks for both of these, which result in extra work.
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As well, since the fluid collision option is set to NONE, the entire
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fluid collision system is completely unneeded, yet used anyways.
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Copyright (C) 2020 Technove LLC
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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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 958b25e62b040943c346114ef19d56104ae0a844..56351d5c2b4ea2c1b335253153cedafdf058d9ae 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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@@ -3720,7 +3720,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
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Vec3 vec3d1 = new Vec3(entity.getX(), entity.getEyeY(), entity.getZ());
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// Paper - diff on change - used in CraftLivingEntity#hasLineOfSight(Location) and CraftWorld#lineOfSightExists
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- return vec3d1.distanceToSqr(vec3d) > 128.0D * 128.0D ? false : this.level().clip(new ClipContext(vec3d, vec3d1, ClipContext.Block.COLLIDER, ClipContext.Fluid.NONE, this)).getType() == HitResult.Type.MISS; // Paper - Perf: Use distance squared
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+ return vec3d1.distanceToSqr(vec3d) > 128.0D * 128.0D ? false : this.level().clipDirect(vec3d, vec3d1, net.minecraft.world.phys.shapes.CollisionContext.of(this)) == HitResult.Type.MISS; // Paper - Perf: Use distance squared & strip raytracing
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}
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}
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diff --git a/src/main/java/net/minecraft/world/level/BlockGetter.java b/src/main/java/net/minecraft/world/level/BlockGetter.java
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index bb8e962e63c7a2d931f9bd7f7c002aa35cfa5fd3..0fa131a6c98adb498fc8d534e0e39647e80c6923 100644
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--- a/src/main/java/net/minecraft/world/level/BlockGetter.java
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+++ b/src/main/java/net/minecraft/world/level/BlockGetter.java
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@@ -68,6 +68,18 @@ public interface BlockGetter extends LevelHeightAccessor {
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});
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}
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+ // Paper start - Broken down variant of the method below, used by Level#clipDirect
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+ @Nullable
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+ default BlockHitResult.Type clipDirect(Vec3 start, Vec3 end, BlockPos pos, BlockState state, net.minecraft.world.phys.shapes.CollisionContext collisionContext) {
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+ if (state.isAir()) {
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+ return null;
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+ }
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+
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+ final VoxelShape voxelshape = ClipContext.Block.COLLIDER.get(state, this, pos, collisionContext);
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+ final BlockHitResult hitResult = this.clipWithInteractionOverride(start, end, pos, voxelshape, state);
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+ return hitResult == null ? null : hitResult.getType();
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+ }
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+ // Paper end
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// CraftBukkit start - moved block handling into separate method for use by Block#rayTrace
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default BlockHitResult clip(ClipContext raytrace1, BlockPos blockposition) {
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// Paper start - Add predicate for blocks when raytracing
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diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
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index eb7df68d146f9e841bdf99fa2d85fb4b04e603ce..12ab7097562d49dc466737378046707dc1b36b3b 100644
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--- a/src/main/java/net/minecraft/world/level/Level.java
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+++ b/src/main/java/net/minecraft/world/level/Level.java
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@@ -331,10 +331,87 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
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return null;
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}
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- // Paper start
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+ // Paper start - Broken down method of raytracing for EntityLiving#hasLineOfSight, replaces BlockGetter#clip(CollisionContext)
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public net.minecraft.world.phys.BlockHitResult.Type clipDirect(Vec3 start, Vec3 end, net.minecraft.world.phys.shapes.CollisionContext context) {
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- // To be patched over
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- return this.clip(new ClipContext(start, end, ClipContext.Block.COLLIDER, ClipContext.Fluid.NONE, context)).getType();
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+ // most of this code comes from BlockGetter#clip(CollisionContext, BiFunction, Function), but removes the needless functions
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+ if (start.equals(end)) {
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+ return net.minecraft.world.phys.BlockHitResult.Type.MISS;
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+ }
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+
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+ final double endX = Mth.lerp(-1.0E-7D, end.x, start.x);
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+ final double endY = Mth.lerp(-1.0E-7D, end.y, start.y);
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+ final double endZ = Mth.lerp(-1.0E-7D, end.z, start.z);
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+
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+ final double startX = Mth.lerp(-1.0E-7D, start.x, end.x);
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+ final double startY = Mth.lerp(-1.0E-7D, start.y, end.y);
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+ final double startZ = Mth.lerp(-1.0E-7D, start.z, end.z);
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+
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+ int currentX = Mth.floor(startX);
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+ int currentY = Mth.floor(startY);
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+ int currentZ = Mth.floor(startZ);
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+
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+ final BlockPos.MutableBlockPos currentBlock = new BlockPos.MutableBlockPos(currentX, currentY, currentZ);
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+
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+ LevelChunk chunk = this.getChunkIfLoaded(currentBlock);
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+ if (chunk == null) {
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+ return net.minecraft.world.phys.BlockHitResult.Type.MISS;
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+ }
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+
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+ final net.minecraft.world.phys.BlockHitResult.Type initialCheck = this.clipDirect(start, end, currentBlock, chunk.getBlockState(currentBlock), context);
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+ if (initialCheck != null) {
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+ return initialCheck;
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+ }
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+
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+ final double diffX = endX - startX;
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+ final double diffY = endY - startY;
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+ final double diffZ = endZ - startZ;
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+
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+ final int xDirection = Mth.sign(diffX);
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+ final int yDirection = Mth.sign(diffY);
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+ final int zDirection = Mth.sign(diffZ);
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+
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+ final double normalizedX = xDirection == 0 ? Double.MAX_VALUE : (double) xDirection / diffX;
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+ final double normalizedY = yDirection == 0 ? Double.MAX_VALUE : (double) yDirection / diffY;
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+ final double normalizedZ = zDirection == 0 ? Double.MAX_VALUE : (double) zDirection / diffZ;
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+
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+ double normalizedXDirection = normalizedX * (xDirection > 0 ? 1.0D - Mth.frac(startX) : Mth.frac(startX));
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+ double normalizedYDirection = normalizedY * (yDirection > 0 ? 1.0D - Mth.frac(startY) : Mth.frac(startY));
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+ double normalizedZDirection = normalizedZ * (zDirection > 0 ? 1.0D - Mth.frac(startZ) : Mth.frac(startZ));
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+
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+ net.minecraft.world.phys.BlockHitResult.Type result;
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+
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+ do {
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+ if (normalizedXDirection > 1.0D && normalizedYDirection > 1.0D && normalizedZDirection > 1.0D) {
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+ return net.minecraft.world.phys.BlockHitResult.Type.MISS;
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+ }
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+
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+ if (normalizedXDirection < normalizedYDirection) {
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+ if (normalizedXDirection < normalizedZDirection) {
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+ currentX += xDirection;
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+ normalizedXDirection += normalizedX;
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+ } else {
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+ currentZ += zDirection;
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+ normalizedZDirection += normalizedZ;
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+ }
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+ } else if (normalizedYDirection < normalizedZDirection) {
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+ currentY += yDirection;
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+ normalizedYDirection += normalizedY;
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+ } else {
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+ currentZ += zDirection;
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+ normalizedZDirection += normalizedZ;
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+ }
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+
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+ currentBlock.set(currentX, currentY, currentZ);
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+ if (chunk.getPos().x != currentBlock.getX() >> 4 || chunk.getPos().z != currentBlock.getZ() >> 4) {
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+ chunk = this.getChunkIfLoaded(currentBlock);
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+ if (chunk == null) {
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+ return net.minecraft.world.phys.BlockHitResult.Type.MISS;
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+ }
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+ }
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+ result = this.clipDirect(start, end, currentBlock, chunk.getBlockState(currentBlock), context);
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+ } while (result == null);
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+
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+ return result;
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}
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// Paper end
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