171 lines
11 KiB
Diff
171 lines
11 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Thu, 2 Jul 2020 12:02:43 -0700
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Subject: [PATCH] Optimise collision checking in player move packet handling
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Move collision logic to just the hasNewCollision call instead of getCubes + hasNewCollision
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diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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index 2db7071d80a2d288d864ae32f250435d63b5ac45..1962550a1d8ca5302025438d95e1e50eeb3e2f68 100644
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--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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@@ -655,7 +655,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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return;
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}
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- boolean flag = worldserver.noCollision(entity, entity.getBoundingBox().deflate(0.0625D));
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+ AABB oldBox = entity.getBoundingBox(); // Paper - copy from player movement packet
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d6 = d3 - this.vehicleLastGoodX; // Paper - diff on change, used for checking large move vectors above
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d7 = d4 - this.vehicleLastGoodY - 1.0E-6D; // Paper - diff on change, used for checking large move vectors above
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@@ -663,6 +663,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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boolean flag1 = entity.verticalCollisionBelow;
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entity.move(MoverType.PLAYER, new Vec3(d6, d7, d8));
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+ boolean didCollide = toX != entity.getX() || toY != entity.getY() || toZ != entity.getZ(); // Paper - needed here as the difference in Y can be reset - also note: this is only a guess at whether collisions took place, floating point errors can make this true when it shouldn't be...
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double d11 = d7;
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d6 = d3 - entity.getX();
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@@ -676,16 +677,24 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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boolean flag2 = false;
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if (d10 > org.spigotmc.SpigotConfig.movedWronglyThreshold) { // Spigot
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- flag2 = true;
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+ flag2 = true; // Paper - diff on change, this should be moved wrongly
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ServerGamePacketListenerImpl.LOGGER.warn("{} (vehicle of {}) moved wrongly! {}", new Object[]{entity.getName().getString(), this.player.getName().getString(), Math.sqrt(d10)});
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}
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Location curPos = this.getCraftPlayer().getLocation(); // Spigot
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entity.absMoveTo(d3, d4, d5, f, f1);
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this.player.absMoveTo(d3, d4, d5, this.player.getYRot(), this.player.getXRot()); // CraftBukkit
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- boolean flag3 = worldserver.noCollision(entity, entity.getBoundingBox().deflate(0.0625D));
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- if (flag && (flag2 || !flag3)) {
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+ // Paper start - optimise out extra getCubes
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+ boolean teleportBack = flag2; // violating this is always a fail
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+ if (!teleportBack) {
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+ // note: only call after setLocation, or else getBoundingBox is wrong
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+ AABB newBox = entity.getBoundingBox();
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+ if (didCollide || !oldBox.equals(newBox)) {
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+ teleportBack = this.hasNewCollision(worldserver, entity, oldBox, newBox);
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+ } // else: no collision at all detected, why do we care?
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+ }
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+ if (teleportBack) { // Paper end - optimise out extra getCubes
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entity.absMoveTo(d0, d1, d2, f, f1);
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this.player.absMoveTo(d0, d1, d2, this.player.getYRot(), this.player.getXRot()); // CraftBukkit
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this.connection.send(new ClientboundMoveVehiclePacket(entity));
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@@ -771,7 +780,32 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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}
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private boolean noBlocksAround(Entity entity) {
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- return entity.level.getBlockStates(entity.getBoundingBox().inflate(0.0625D).expandTowards(0.0D, -0.55D, 0.0D)).allMatch(BlockBehaviour.BlockStateBase::isAir);
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+ // Paper start - stop using streams, this is already a known fixed problem in Entity#move
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+ AABB box = entity.getBoundingBox().inflate(0.0625D).expandTowards(0.0D, -0.55D, 0.0D);
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+ int minX = Mth.floor(box.minX);
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+ int minY = Mth.floor(box.minY);
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+ int minZ = Mth.floor(box.minZ);
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+ int maxX = Mth.floor(box.maxX);
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+ int maxY = Mth.floor(box.maxY);
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+ int maxZ = Mth.floor(box.maxZ);
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+
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+ Level world = entity.level;
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+ BlockPos.MutableBlockPos pos = new BlockPos.MutableBlockPos();
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+
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+ for (int y = minY; y <= maxY; ++y) {
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+ for (int z = minZ; z <= maxZ; ++z) {
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+ for (int x = minX; x <= maxX; ++x) {
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+ pos.set(x, y, z);
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+ BlockState type = world.getBlockStateIfLoaded(pos);
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+ if (type != null && !type.isAir()) {
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+ return false;
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+ }
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+ }
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+ }
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+ }
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+
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+ return true;
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+ // Paper end - stop using streams, this is already a known fixed problem in Entity#move
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}
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@Override
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@@ -1351,7 +1385,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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}
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if (this.awaitingPositionFromClient != null) {
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- if (this.tickCount - this.awaitingTeleportTime > 20) {
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+ if (false && this.tickCount - this.awaitingTeleportTime > 20) { // Paper - this will greatly screw with clients with > 1000ms RTT
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this.awaitingTeleportTime = this.tickCount;
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this.teleport(this.awaitingPositionFromClient.x, this.awaitingPositionFromClient.y, this.awaitingPositionFromClient.z, this.player.getYRot(), this.player.getXRot());
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}
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@@ -1445,7 +1479,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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}
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}
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- AABB axisalignedbb = this.player.getBoundingBox();
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+ AABB axisalignedbb = this.player.getBoundingBox(); // Paper - diff on change, should be old AABB
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d7 = d0 - this.lastGoodX; // Paper - diff on change, used for checking large move vectors above
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d8 = d1 - this.lastGoodY; // Paper - diff on change, used for checking large move vectors above
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@@ -1486,6 +1520,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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boolean flag1 = this.player.verticalCollisionBelow;
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this.player.move(MoverType.PLAYER, new Vec3(d7, d8, d9));
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+ boolean didCollide = toX != this.player.getX() || toY != this.player.getY() || toZ != this.player.getZ(); // Paper - needed here as the difference in Y can be reset - also note: this is only a guess at whether collisions took place, floating point errors can make this true when it shouldn't be...
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this.player.onGround = packet.isOnGround(); // CraftBukkit - SPIGOT-5810, SPIGOT-5835, SPIGOT-6828: reset by this.player.move
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// Paper start - prevent position desync
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if (this.awaitingPositionFromClient != null) {
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@@ -1505,12 +1540,23 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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boolean flag2 = false;
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if (!this.player.isChangingDimension() && d11 > org.spigotmc.SpigotConfig.movedWronglyThreshold && !this.player.isSleeping() && !this.player.gameMode.isCreative() && this.player.gameMode.getGameModeForPlayer() != GameType.SPECTATOR) { // Spigot
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- flag2 = true;
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+ flag2 = true; // Paper - diff on change, this should be moved wrongly
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ServerGamePacketListenerImpl.LOGGER.warn("{} moved wrongly!", this.player.getName().getString());
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}
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this.player.absMoveTo(d0, d1, d2, f, f1);
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- if (!this.player.noPhysics && !this.player.isSleeping() && (flag2 && worldserver.noCollision(this.player, axisalignedbb) || this.isPlayerCollidingWithAnythingNew(worldserver, axisalignedbb))) {
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+ // Paper start - optimise out extra getCubes
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+ // Original for reference:
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+ // boolean teleportBack = flag2 && worldserver.getCubes(this.player, axisalignedbb) || (didCollide && this.a((IWorldReader) worldserver, axisalignedbb));
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+ boolean teleportBack = flag2; // violating this is always a fail
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+ if (!this.player.noPhysics && !this.player.isSleeping() && !teleportBack) {
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+ AABB newBox = this.player.getBoundingBox();
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+ if (didCollide || !axisalignedbb.equals(newBox)) {
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+ // note: only call after setLocation, or else getBoundingBox is wrong
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+ teleportBack = this.hasNewCollision(worldserver, this.player, axisalignedbb, newBox);
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+ } // else: no collision at all detected, why do we care?
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+ }
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+ if (!this.player.noPhysics && !this.player.isSleeping() && teleportBack) { // Paper end - optimise out extra getCubes
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this.internalTeleport(d3, d4, d5, f, f1, Collections.emptySet(), false); // CraftBukkit - SPIGOT-1807: Don't call teleport event, when the client thinks the player is falling, because the chunks are not loaded on the client yet.
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} else {
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// CraftBukkit start - fire PlayerMoveEvent
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@@ -1596,6 +1642,27 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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}
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}
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+ // Paper start - optimise out extra getCubes
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+ private boolean hasNewCollision(final ServerLevel world, final Entity entity, final AABB oldBox, final AABB newBox) {
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+ final List<AABB> collisions = io.papermc.paper.util.CachedLists.getTempCollisionList();
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+ try {
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+ io.papermc.paper.util.CollisionUtil.getCollisions(world, entity, newBox, collisions, false, true,
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+ true, false, null, null);
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+
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+ for (int i = 0, len = collisions.size(); i < len; ++i) {
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+ final AABB box = collisions.get(i);
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+ if (!io.papermc.paper.util.CollisionUtil.voxelShapeIntersect(box, oldBox)) {
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+ return true;
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+ }
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+ }
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+
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+ return false;
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+ } finally {
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+ io.papermc.paper.util.CachedLists.returnTempCollisionList(collisions);
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+ }
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+ }
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+ // Paper end - optimise out extra getCubes
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+
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private boolean isPlayerCollidingWithAnythingNew(LevelReader world, AABB box) {
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Iterable<VoxelShape> iterable = world.getCollisions(this.player, this.player.getBoundingBox().deflate(9.999999747378752E-6D));
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VoxelShape voxelshape = Shapes.create(box.deflate(9.999999747378752E-6D));
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