mirror of
https://github.com/PaperMC/Paper.git
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89d51d5f29
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable. It should be noted that this decision does not promise all future exploits will be configurable.
209 lines
8.4 KiB
Diff
209 lines
8.4 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: vicisacat <victor.branchu@gmail.com>
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Date: Fri, 17 Nov 2023 20:22:43 +0100
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Subject: [PATCH] Add FluidState API
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diff --git a/src/main/java/io/papermc/paper/block/fluid/PaperFluidData.java b/src/main/java/io/papermc/paper/block/fluid/PaperFluidData.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..479bc32241ebadf8bbc1080b601f61391ad37fa4
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--- /dev/null
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+++ b/src/main/java/io/papermc/paper/block/fluid/PaperFluidData.java
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@@ -0,0 +1,110 @@
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+package io.papermc.paper.block.fluid;
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+
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+import com.google.common.base.Preconditions;
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+import io.papermc.paper.block.fluid.type.PaperFallingFluidData;
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+import io.papermc.paper.block.fluid.type.PaperFlowingFluidData;
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+import io.papermc.paper.util.MCUtil;
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+import java.util.HashMap;
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+import java.util.Map;
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+import java.util.function.Function;
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+import net.minecraft.world.level.material.FluidState;
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+import net.minecraft.world.level.material.LavaFluid;
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+import net.minecraft.world.level.material.WaterFluid;
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+import org.bukkit.Fluid;
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+import org.bukkit.Location;
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+import org.bukkit.craftbukkit.CraftFluid;
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+import org.bukkit.craftbukkit.CraftWorld;
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+import org.bukkit.craftbukkit.util.CraftVector;
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+import org.bukkit.util.Vector;
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+import org.jetbrains.annotations.NotNull;
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+
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+public class PaperFluidData implements FluidData {
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+
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+ private final FluidState state;
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+
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+ protected PaperFluidData(final FluidState state) {
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+ this.state = state;
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+ }
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+
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+ /**
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+ * Provides the internal server representation of this fluid data.
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+ * @return the fluid state.
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+ */
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+ public FluidState getState() {
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+ return this.state;
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+ }
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+
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+ @Override
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+ public final @NotNull Fluid getFluidType() {
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+ return CraftFluid.minecraftToBukkit(this.state.getType());
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+ }
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+
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+ @Override
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+ public @NotNull PaperFluidData clone() {
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+ try {
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+ return (PaperFluidData) super.clone();
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+ } catch (final CloneNotSupportedException ex) {
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+ throw new AssertionError("Clone not supported", ex);
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+ }
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+ }
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+
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+ @Override
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+ public @NotNull Vector computeFlowDirection(final Location location) {
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+ Preconditions.checkArgument(location.getWorld() != null, "Cannot compute flow direction on world-less location");
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+ return CraftVector.toBukkit(this.state.getFlow(
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+ ((CraftWorld) location.getWorld()).getHandle(),
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+ MCUtil.toBlockPosition(location)
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+ ));
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+ }
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+
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+ @Override
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+ public int getLevel() {
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+ return this.state.getAmount();
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+ }
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+
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+ @Override
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+ public float computeHeight(@NotNull final Location location) {
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+ Preconditions.checkArgument(location.getWorld() != null, "Cannot compute height on world-less location");
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+ return this.state.getHeight(((CraftWorld) location.getWorld()).getHandle(), MCUtil.toBlockPos(location));
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+ }
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+
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+ @Override
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+ public boolean isSource() {
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+ return this.state.isSource();
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+ }
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+
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+ @Override
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+ public int hashCode() {
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+ return this.state.hashCode();
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+ }
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+
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+ @Override
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+ public boolean equals(final Object obj) {
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+ return obj instanceof final PaperFluidData paperFluidData && this.state.equals(paperFluidData.state);
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+ }
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+
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+ @Override
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+ public String toString() {
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+ return "PaperFluidData{" + this.state + "}";
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+ }
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+
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+ /* Registry */
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+ private static final Map<Class<? extends net.minecraft.world.level.material.Fluid>, Function<FluidState, PaperFluidData>> MAP = new HashMap<>();
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+ static {
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+ //<editor-fold desc="PaperFluidData Registration" defaultstate="collapsed">
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+ register(LavaFluid.Source.class, PaperFallingFluidData::new);
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+ register(WaterFluid.Source.class, PaperFallingFluidData::new);
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+ register(LavaFluid.Flowing.class, PaperFlowingFluidData::new);
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+ register(WaterFluid.Flowing.class, PaperFlowingFluidData::new);
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+ //</editor-fold>
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+ }
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+
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+ static void register(final Class<? extends net.minecraft.world.level.material.Fluid> fluid, final Function<FluidState, PaperFluidData> creator) {
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+ Preconditions.checkState(MAP.put(fluid, creator) == null, "Duplicate mapping %s->%s", fluid, creator);
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+ MAP.put(fluid, creator);
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+ }
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+
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+ public static PaperFluidData createData(final FluidState state) {
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+ return MAP.getOrDefault(state.getType().getClass(), PaperFluidData::new).apply(state);
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+ }
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+}
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diff --git a/src/main/java/io/papermc/paper/block/fluid/package-info.java b/src/main/java/io/papermc/paper/block/fluid/package-info.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..cfabb814ebd281aab299c6c655266ff357e08806
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--- /dev/null
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+++ b/src/main/java/io/papermc/paper/block/fluid/package-info.java
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@@ -0,0 +1,5 @@
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+@DefaultQualifier(NonNull.class)
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+package io.papermc.paper.block.fluid;
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+
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+import org.checkerframework.checker.nullness.qual.NonNull;
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+import org.checkerframework.framework.qual.DefaultQualifier;
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diff --git a/src/main/java/io/papermc/paper/block/fluid/type/PaperFallingFluidData.java b/src/main/java/io/papermc/paper/block/fluid/type/PaperFallingFluidData.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..655dbd83ff4e632f1168b75e9b402b05aa9d8edf
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--- /dev/null
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+++ b/src/main/java/io/papermc/paper/block/fluid/type/PaperFallingFluidData.java
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@@ -0,0 +1,18 @@
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+
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+package io.papermc.paper.block.fluid.type;
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+
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+import io.papermc.paper.block.fluid.PaperFluidData;
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+import net.minecraft.world.level.material.FlowingFluid;
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+import net.minecraft.world.level.material.FluidState;
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+
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+public class PaperFallingFluidData extends PaperFluidData implements FallingFluidData {
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+
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+ public PaperFallingFluidData(final FluidState state) {
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+ super(state);
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+ }
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+
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+ @Override
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+ public boolean isFalling() {
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+ return this.getState().getValue(FlowingFluid.FALLING);
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+ }
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+}
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diff --git a/src/main/java/io/papermc/paper/block/fluid/type/PaperFlowingFluidData.java b/src/main/java/io/papermc/paper/block/fluid/type/PaperFlowingFluidData.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..c0c2805cb045cdd835b402776a6923fe2ecc2a99
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--- /dev/null
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+++ b/src/main/java/io/papermc/paper/block/fluid/type/PaperFlowingFluidData.java
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@@ -0,0 +1,11 @@
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+package io.papermc.paper.block.fluid.type;
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+
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+import net.minecraft.world.level.material.FluidState;
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+
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+public class PaperFlowingFluidData extends PaperFallingFluidData implements FlowingFluidData {
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+
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+ public PaperFlowingFluidData(final FluidState state) {
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+ super(state);
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+ }
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+
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+}
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java b/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
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index 7c7dbd030ada8d2fab494b6a125664ddc3955639..35f7de6b50d3adae7bdd0da5f779f0a466d25522 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
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@@ -107,6 +107,13 @@ public abstract class CraftRegionAccessor implements RegionAccessor {
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return CraftBlock.at(this.getHandle(), new BlockPos(x, y, z)).getState();
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}
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+ // Paper start - FluidState API
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+ @Override
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+ public io.papermc.paper.block.fluid.FluidData getFluidData(final int x, final int y, final int z) {
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+ return io.papermc.paper.block.fluid.PaperFluidData.createData(getHandle().getFluidState(new BlockPos(x, y, z)));
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+ }
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+ // Paper end
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+
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@Override
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public BlockData getBlockData(Location location) {
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return this.getBlockData(location.getBlockX(), location.getBlockY(), location.getBlockZ());
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diff --git a/src/main/java/org/bukkit/craftbukkit/generator/CraftLimitedRegion.java b/src/main/java/org/bukkit/craftbukkit/generator/CraftLimitedRegion.java
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index ca9bb98ccfc3863c2ba538953470ab9e2b8a2f29..a2edef9739bad941f8e581da126bbfeac7cab5d8 100644
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--- a/src/main/java/org/bukkit/craftbukkit/generator/CraftLimitedRegion.java
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+++ b/src/main/java/org/bukkit/craftbukkit/generator/CraftLimitedRegion.java
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@@ -303,4 +303,11 @@ public class CraftLimitedRegion extends CraftRegionAccessor implements LimitedRe
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return centerChunkZ;
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}
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// Paper end - Add more LimitedRegion API
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+ // Paper start - Fluid API
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+ @Override
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+ public io.papermc.paper.block.fluid.FluidData getFluidData(int x, int y, int z) {
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+ Preconditions.checkArgument(this.isInRegion(x, y, z), "Coordinates %s, %s, %s are not in the region", x, y, z);
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+ return super.getFluidData(x, y, z);
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+ }
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+ // Paper end
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}
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