diff options
Diffstat (limited to 'patches/server/0420-Fix-for-large-move-vectors-crashing-server.patch')
| -rw-r--r-- | patches/server/0420-Fix-for-large-move-vectors-crashing-server.patch | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/patches/server/0420-Fix-for-large-move-vectors-crashing-server.patch b/patches/server/0420-Fix-for-large-move-vectors-crashing-server.patch new file mode 100644 index 0000000000..e987725d68 --- /dev/null +++ b/patches/server/0420-Fix-for-large-move-vectors-crashing-server.patch @@ -0,0 +1,86 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Spottedleaf <[email protected]> +Date: Sun, 17 May 2020 23:47:33 -0700 +Subject: [PATCH] Fix for large move vectors crashing server + +Check movement distance also based on current position. + +diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java +index d97b1040ecec1d30fdd1bf309a8215955642fb93..7a743d81c387179218c519a7e27702605069caeb 100644 +--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java ++++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java +@@ -492,9 +492,9 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl + float prevYaw = this.player.getYRot(); + float prevPitch = this.player.getXRot(); + // CraftBukkit end +- double d0 = entity.getX(); +- double d1 = entity.getY(); +- double d2 = entity.getZ(); ++ double d0 = entity.getX();final double fromX = d0; // Paper - OBFHELPER ++ double d1 = entity.getY();final double fromY = d1; // Paper - OBFHELPER ++ double d2 = entity.getZ();final double fromZ = d2; // Paper - OBFHELPER + double d3 = ServerGamePacketListenerImpl.clampHorizontal(packet.getX()); final double toX = d3; // Paper - OBFHELPER + double d4 = ServerGamePacketListenerImpl.clampVertical(packet.getY()); final double toY = d4; // Paper - OBFHELPER + double d5 = ServerGamePacketListenerImpl.clampHorizontal(packet.getZ()); final double toZ = d5; // Paper - OBFHELPER +@@ -504,7 +504,16 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl + double d7 = d4 - this.vehicleFirstGoodY; + double d8 = d5 - this.vehicleFirstGoodZ; + double d9 = entity.getDeltaMovement().lengthSqr(); +- double d10 = d6 * d6 + d7 * d7 + d8 * d8; ++ // Paper start - fix large move vectors killing the server ++ double currDeltaX = toX - fromX; ++ double currDeltaY = toY - fromY; ++ double currDeltaZ = toZ - fromZ; ++ double d10 = Math.max(d6 * d6 + d7 * d7 + d8 * d8, (currDeltaX * currDeltaX + currDeltaY * currDeltaY + currDeltaZ * currDeltaZ) - 1); ++ double otherFieldX = d3 - this.vehicleLastGoodX; ++ double otherFieldY = d4 - this.vehicleLastGoodY - 1.0E-6D; ++ double otherFieldZ = d5 - this.vehicleLastGoodZ; ++ d10 = Math.max(d10, (otherFieldX * otherFieldX + otherFieldY * otherFieldY + otherFieldZ * otherFieldZ) - 1); ++ // Paper end - fix large move vectors killing the server + + // CraftBukkit start - handle custom speeds and skipped ticks + this.allowedPlayerTicks += (System.currentTimeMillis() / 50) - this.lastTick; +@@ -550,9 +559,9 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl + + boolean flag = worldserver.noCollision(entity, entity.getBoundingBox().deflate(0.0625D)); + +- d6 = d3 - this.vehicleLastGoodX; +- d7 = d4 - this.vehicleLastGoodY - 1.0E-6D; +- d8 = d5 - this.vehicleLastGoodZ; ++ d6 = d3 - this.vehicleLastGoodX; // Paper - diff on change, used for checking large move vectors above ++ d7 = d4 - this.vehicleLastGoodY - 1.0E-6D; // Paper - diff on change, used for checking large move vectors above ++ d8 = d5 - this.vehicleLastGoodZ; // Paper - diff on change, used for checking large move vectors above + boolean flag1 = entity.verticalCollisionBelow; + + if (entity instanceof LivingEntity) { +@@ -1254,7 +1263,16 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl + double d7 = d1 - this.firstGoodY; + double d8 = d2 - this.firstGoodZ; + double d9 = this.player.getDeltaMovement().lengthSqr(); +- double d10 = d6 * d6 + d7 * d7 + d8 * d8; ++ // Paper start - fix large move vectors killing the server ++ double currDeltaX = toX - prevX; ++ double currDeltaY = toY - prevY; ++ double currDeltaZ = toZ - prevZ; ++ double d10 = Math.max(d6 * d6 + d7 * d7 + d8 * d8, (currDeltaX * currDeltaX + currDeltaY * currDeltaY + currDeltaZ * currDeltaZ) - 1); ++ double otherFieldX = d0 - this.lastGoodX; ++ double otherFieldY = d1 - this.lastGoodY; ++ double otherFieldZ = d2 - this.lastGoodZ; ++ d10 = Math.max(d10, (otherFieldX * otherFieldX + otherFieldY * otherFieldY + otherFieldZ * otherFieldZ) - 1); ++ // Paper end - fix large move vectors killing the server + + if (this.player.isSleeping()) { + if (d10 > 1.0D) { +@@ -1310,9 +1328,9 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl + + AABB axisalignedbb = this.player.getBoundingBox(); + +- d6 = d0 - this.lastGoodX; +- d7 = d1 - this.lastGoodY; +- d8 = d2 - this.lastGoodZ; ++ d6 = d0 - this.lastGoodX; // Paper - diff on change, used for checking large move vectors above ++ d7 = d1 - this.lastGoodY; // Paper - diff on change, used for checking large move vectors above ++ d8 = d2 - this.lastGoodZ; // Paper - diff on change, used for checking large move vectors above + boolean flag1 = d7 > 0.0D; + + if (this.player.onGround() && !packet.isOnGround() && flag1) { |