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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <spottedleaf@spottedleaf.dev>
Date: Fri, 24 Jul 2020 15:56:05 -0700
Subject: [PATCH] Fix some rails connecting improperly
diff --git a/src/main/java/net/minecraft/world/level/block/BaseRailBlock.java b/src/main/java/net/minecraft/world/level/block/BaseRailBlock.java
index 41c23abf78c2ca95c26633860adb9360139b3ceb..1242eb55996bca8a63bd7b95d01d0299fb36d105 100644
--- a/src/main/java/net/minecraft/world/level/block/BaseRailBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/BaseRailBlock.java
@@ -65,6 +65,7 @@ public abstract class BaseRailBlock extends Block implements SimpleWaterloggedBl
state = this.updateDir(world, pos, state, true);
if (this.isStraight) {
state.neighborChanged(world, pos, this, pos, notify);
+ state = world.getBlockState(pos); // Paper - don't desync, update again
}
return state;
diff --git a/src/main/java/net/minecraft/world/level/block/DetectorRailBlock.java b/src/main/java/net/minecraft/world/level/block/DetectorRailBlock.java
index 2335e7af6bc16a0d65c7818c316f3194c680c69d..63c7f2cf530ac9562960ae5a3cbc6e511a009377 100644
--- a/src/main/java/net/minecraft/world/level/block/DetectorRailBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/DetectorRailBlock.java
@@ -70,6 +70,7 @@ public class DetectorRailBlock extends BaseRailBlock {
private void checkPressed(Level world, BlockPos pos, BlockState state) {
if (this.canSurvive(state, world, pos)) {
+ if (state.getBlock() != this) { return; } // Paper - not our block, don't do anything
boolean flag = (Boolean) state.getValue(DetectorRailBlock.POWERED);
boolean flag1 = false;
List<AbstractMinecart> list = this.getInteractingMinecartOfType(world, pos, AbstractMinecart.class, (entity) -> {
diff --git a/src/main/java/net/minecraft/world/level/block/RailState.java b/src/main/java/net/minecraft/world/level/block/RailState.java
index a205e04bce8706302e4a077646749d05dee98251..2a642275522c1d718dd6052f5ac942579cc31e9e 100644
--- a/src/main/java/net/minecraft/world/level/block/RailState.java
+++ b/src/main/java/net/minecraft/world/level/block/RailState.java
@@ -17,6 +17,12 @@ public class RailState {
private final boolean isStraight;
private final List<BlockPos> connections = Lists.newArrayList();
+ // Paper start - prevent desync
+ public boolean isValid() {
+ return this.level.getBlockState(this.pos).getBlock() == this.state.getBlock();
+ }
+ // Paper end - prevent desync
+
public RailState(Level world, BlockPos pos, BlockState state) {
this.level = world;
this.pos = pos;
@@ -143,6 +149,11 @@ public class RailState {
}
private void connectTo(RailState placementHelper) {
+ // Paper start - prevent desync
+ if (!this.isValid() || !placementHelper.isValid()) {
+ return;
+ }
+ // Paper end - prevent desync
this.connections.add(placementHelper.pos);
BlockPos blockPos = this.pos.north();
BlockPos blockPos2 = this.pos.south();
@@ -333,10 +344,15 @@ public class RailState {
this.state = this.state.setValue(this.block.getShapeProperty(), railShape2);
if (forceUpdate || this.level.getBlockState(this.pos) != this.state) {
this.level.setBlock(this.pos, this.state, 3);
+ // Paper start - prevent desync
+ if (!this.isValid()) {
+ return this;
+ }
+ // Paper end - prevent desync
for(int i = 0; i < this.connections.size(); ++i) {
RailState railState = this.getRail(this.connections.get(i));
- if (railState != null) {
+ if (railState != null && railState.isValid()) { // Paper - prevent desync
railState.removeSoftConnections();
if (railState.canConnectTo(this)) {
railState.connectTo(this);
@@ -349,6 +365,6 @@ public class RailState {
}
public BlockState getState() {
- return this.state;
+ return this.level.getBlockState(this.pos); // Paper - prevent desync
}
}
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