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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: ab8ace685 SPIGOT-7236: Bone meal doesn't increase use statistic 7dcb59b8e Avoid switch on material in previous commit Spigot Changes: 19641c75 SPIGOT-7235: World.Spigot#strikeLightningEffect doesn't do anything
93 lines
6.4 KiB
Diff
93 lines
6.4 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: Sun, 17 May 2020 23:47:33 -0700
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Subject: [PATCH] Fix for large move vectors crashing server
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Check movement distance also based on current position.
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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 15b16d37928eca9f8da026df0c76a1f7cd43ba70..ebce5372a4961b8518b3c5ee1f727705c8b68152 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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@@ -563,9 +563,9 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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if (entity != this.player && entity.getControllingPassenger() == this.player && entity == this.lastVehicle) {
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ServerLevel worldserver = this.player.getLevel();
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- double d0 = entity.getX();
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- double d1 = entity.getY();
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- double d2 = entity.getZ();
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+ double d0 = entity.getX();final double fromX = d0; // Paper - OBFHELPER
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+ double d1 = entity.getY();final double fromY = d1; // Paper - OBFHELPER
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+ double d2 = entity.getZ();final double fromZ = d2; // Paper - OBFHELPER
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double d3 = ServerGamePacketListenerImpl.clampHorizontal(packet.getX()); final double toX = d3; // Paper - OBFHELPER
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double d4 = ServerGamePacketListenerImpl.clampVertical(packet.getY()); final double toY = d4; // Paper - OBFHELPER
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double d5 = ServerGamePacketListenerImpl.clampHorizontal(packet.getZ()); final double toZ = d5; // Paper - OBFHELPER
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@@ -575,8 +575,19 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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double d7 = d4 - this.vehicleFirstGoodY;
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double d8 = d5 - this.vehicleFirstGoodZ;
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double d9 = entity.getDeltaMovement().lengthSqr();
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- double d10 = d6 * d6 + d7 * d7 + d8 * d8;
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-
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+ // Paper start - fix large move vectors killing the server
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+ double currDeltaX = toX - fromX;
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+ double currDeltaY = toY - fromY;
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+ double currDeltaZ = toZ - fromZ;
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+ double d10 = Math.max(d6 * d6 + d7 * d7 + d8 * d8, (currDeltaX * currDeltaX + currDeltaY * currDeltaY + currDeltaZ * currDeltaZ) - 1);
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+ // Paper end - fix large move vectors killing the server
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+
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+ // Paper start - fix large move vectors killing the server
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+ double otherFieldX = d3 - this.vehicleLastGoodX;
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+ double otherFieldY = d4 - this.vehicleLastGoodY - 1.0E-6D;
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+ double otherFieldZ = d5 - this.vehicleLastGoodZ;
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+ d10 = Math.max(d10, (otherFieldX * otherFieldX + otherFieldY * otherFieldY + otherFieldZ * otherFieldZ) - 1);
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+ // Paper end - fix large move vectors killing the server
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// CraftBukkit start - handle custom speeds and skipped ticks
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this.allowedPlayerTicks += (System.currentTimeMillis() / 50) - this.lastTick;
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@@ -622,9 +633,9 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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boolean flag = worldserver.noCollision(entity, entity.getBoundingBox().deflate(0.0625D));
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- d6 = d3 - this.vehicleLastGoodX;
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- d7 = d4 - this.vehicleLastGoodY - 1.0E-6D;
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- d8 = d5 - this.vehicleLastGoodZ;
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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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+ d8 = d5 - this.vehicleLastGoodZ; // Paper - diff on change, used for checking large move vectors above
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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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@@ -1344,7 +1355,18 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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double d8 = d1 - this.firstGoodY;
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double d9 = d2 - this.firstGoodZ;
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double d10 = this.player.getDeltaMovement().lengthSqr();
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- double d11 = d7 * d7 + d8 * d8 + d9 * d9;
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+ // Paper start - fix large move vectors killing the server
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+ double currDeltaX = toX - prevX;
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+ double currDeltaY = toY - prevY;
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+ double currDeltaZ = toZ - prevZ;
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+ double d11 = Math.max(d7 * d7 + d8 * d8 + d9 * d9, (currDeltaX * currDeltaX + currDeltaY * currDeltaY + currDeltaZ * currDeltaZ) - 1);
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+ // Paper end - fix large move vectors killing the server
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+ // Paper start - fix large move vectors killing the server
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+ double otherFieldX = d0 - this.lastGoodX;
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+ double otherFieldY = d1 - this.lastGoodY;
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+ double otherFieldZ = d2 - this.lastGoodZ;
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+ d11 = Math.max(d11, (otherFieldX * otherFieldX + otherFieldY * otherFieldY + otherFieldZ * otherFieldZ) - 1);
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+ // Paper end - fix large move vectors killing the server
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if (this.player.isSleeping()) {
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if (d11 > 1.0D) {
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@@ -1396,9 +1418,9 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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AABB axisalignedbb = this.player.getBoundingBox();
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- d7 = d0 - this.lastGoodX;
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- d8 = d1 - this.lastGoodY;
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- d9 = d2 - this.lastGoodZ;
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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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+ d9 = d2 - this.lastGoodZ; // Paper - diff on change, used for checking large move vectors above
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boolean flag = d8 > 0.0D;
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if (this.player.isOnGround() && !packet.isOnGround() && flag) {
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