382 lines
16 KiB
Diff
382 lines
16 KiB
Diff
From da4488dbd8e31eac4c10fd45a7689dccd26f6b5a Mon Sep 17 00:00:00 2001
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From: md_5 <md_5@live.com.au>
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Date: Thu, 16 May 2013 18:51:05 +1000
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Subject: [PATCH] Orebfuscator
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diff --git a/src/main/java/net/minecraft/server/EntityFallingBlock.java b/src/main/java/net/minecraft/server/EntityFallingBlock.java
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index 991a765..e15840b 100644
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--- a/src/main/java/net/minecraft/server/EntityFallingBlock.java
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+++ b/src/main/java/net/minecraft/server/EntityFallingBlock.java
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@@ -86,6 +86,7 @@ public class EntityFallingBlock extends Entity {
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}
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this.world.setAir(i, j, k);
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+ world.spigotConfig.antiXrayInstance.updateNearbyBlocks(world, i, j, k); // Spigot
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}
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if (this.onGround) {
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@@ -101,6 +102,7 @@ public class EntityFallingBlock extends Entity {
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}
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this.world.setTypeAndData(i, j, k, this.id, this.data, 3);
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// CraftBukkit end
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+ world.spigotConfig.antiXrayInstance.updateNearbyBlocks(world, i, j, k); // Spigot
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if (this.id instanceof BlockFalling) {
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((BlockFalling) this.id).a(this.world, i, j, k, this.data);
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diff --git a/src/main/java/net/minecraft/server/Explosion.java b/src/main/java/net/minecraft/server/Explosion.java
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index 39e5b5b..d2587c1 100644
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--- a/src/main/java/net/minecraft/server/Explosion.java
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+++ b/src/main/java/net/minecraft/server/Explosion.java
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@@ -239,6 +239,7 @@ public class Explosion {
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j = chunkposition.y;
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k = chunkposition.z;
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block = this.world.getType(i, j, k);
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+ world.spigotConfig.antiXrayInstance.updateNearbyBlocks(world, i, j, k); // Spigot
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if (flag) {
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double d0 = (double) ((float) i + this.world.random.nextFloat());
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double d1 = (double) ((float) j + this.world.random.nextFloat());
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diff --git a/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java b/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java
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index 856e825..7169ec8 100644
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--- a/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java
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+++ b/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java
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@@ -28,6 +28,7 @@ public class PacketPlayOutMapChunk extends Packet {
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this.d = chunkmap.c;
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this.c = chunkmap.b;
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+ chunk.world.spigotConfig.antiXrayInstance.obfuscateSync(chunk.locX, chunk.locZ, i, chunkmap.a, chunk.world); // Spigot
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try {
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this.buffer = chunkmap.a;
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diff --git a/src/main/java/net/minecraft/server/PacketPlayOutMapChunkBulk.java b/src/main/java/net/minecraft/server/PacketPlayOutMapChunkBulk.java
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index 3eac231..c3cfdc7 100644
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--- a/src/main/java/net/minecraft/server/PacketPlayOutMapChunkBulk.java
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+++ b/src/main/java/net/minecraft/server/PacketPlayOutMapChunkBulk.java
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@@ -26,6 +26,7 @@ public class PacketPlayOutMapChunkBulk extends Packet {
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}
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};
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// CraftBukkit end
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+ private World world; // Spigot
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public PacketPlayOutMapChunkBulk() {}
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@@ -44,6 +45,9 @@ public class PacketPlayOutMapChunkBulk extends Packet {
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Chunk chunk = (Chunk) list.get(k);
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ChunkMap chunkmap = PacketPlayOutMapChunk.a(chunk, true, '\uffff');
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+ // Spigot start
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+ world = chunk.world;
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+ /*
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if (buildBuffer.length < j + chunkmap.a.length) {
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byte[] abyte = new byte[j + chunkmap.a.length];
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@@ -52,6 +56,8 @@ public class PacketPlayOutMapChunkBulk extends Packet {
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}
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System.arraycopy(chunkmap.a, 0, buildBuffer, j, chunkmap.a.length);
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+ */
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+ // Spigot end
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j += chunkmap.a.length;
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this.a[k] = chunk.locX;
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this.b[k] = chunk.locZ;
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@@ -79,6 +85,22 @@ public class PacketPlayOutMapChunkBulk extends Packet {
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if (this.buffer != null) {
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return;
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}
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+ // Spigot start
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+ int finalBufferSize = 0;
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+ // Obfuscate all sections
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+ for (int i = 0; i < a.length; i++) {
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+ world.spigotConfig.antiXrayInstance.obfuscate(c[i], d[i], a[i], inflatedBuffers[i], world);
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+ finalBufferSize += inflatedBuffers[i].length;
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+ }
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+
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+ // Now it's time to efficiently copy the chunk to the build buffer
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+ buildBuffer = new byte[finalBufferSize];
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+ int bufferLocation = 0;
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+ for (int i = 0; i < a.length; i++) {
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+ System.arraycopy(inflatedBuffers[i], 0, buildBuffer, bufferLocation, inflatedBuffers[i].length);
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+ bufferLocation += inflatedBuffers[i].length;
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+ }
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+ // Spigot end
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Deflater deflater = localDeflater.get();
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deflater.reset();
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diff --git a/src/main/java/net/minecraft/server/PlayerInteractManager.java b/src/main/java/net/minecraft/server/PlayerInteractManager.java
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index 3028404..e24d4b5 100644
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--- a/src/main/java/net/minecraft/server/PlayerInteractManager.java
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+++ b/src/main/java/net/minecraft/server/PlayerInteractManager.java
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@@ -173,6 +173,7 @@ public class PlayerInteractManager {
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this.o = i1;
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}
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}
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+ world.spigotConfig.antiXrayInstance.updateNearbyBlocks(world, i, j, k); // Spigot
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}
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}
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index 4a9d48b..7f8d224 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -464,6 +464,7 @@ public abstract class World implements IBlockAccess {
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this.e(i, j + 1, k, block);
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this.e(i, j, k - 1, block);
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this.e(i, j, k + 1, block);
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+ spigotConfig.antiXrayInstance.updateNearbyBlocks(this, i, j, k); // Spigot
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}
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public void b(int i, int j, int k, Block block, int l) {
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diff --git a/src/main/java/org/spigotmc/AntiXray.java b/src/main/java/org/spigotmc/AntiXray.java
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new file mode 100644
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index 0000000..6413ac0
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--- /dev/null
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+++ b/src/main/java/org/spigotmc/AntiXray.java
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@@ -0,0 +1,204 @@
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+package org.spigotmc;
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+
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+import gnu.trove.set.TByteSet;
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+import gnu.trove.set.hash.TByteHashSet;
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+import net.minecraft.server.Block;
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+import net.minecraft.server.World;
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+
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+public class AntiXray
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+{
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+
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+ private static final CustomTimingsHandler update = new CustomTimingsHandler( "xray - update" );
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+ private static final CustomTimingsHandler obfuscate = new CustomTimingsHandler( "xray - obfuscate" );
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+ /*========================================================================*/
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+ // Used to keep track of which blocks to obfuscate
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+ private final boolean[] obfuscateBlocks = new boolean[ Short.MAX_VALUE ];
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+ // Used to select a random replacement ore
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+ private byte[] replacementOres;
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+
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+ public AntiXray(SpigotWorldConfig config)
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+ {
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+ // Set all listed blocks as true to be obfuscated
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+ for ( int id : config.blocks )
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+ {
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+ obfuscateBlocks[id] = true;
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+ }
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+
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+ // For every block
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+ TByteSet blocks = new TByteHashSet();
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+ for ( int i = 0; i < obfuscateBlocks.length; i++ )
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+ {
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+ // If we are obfuscating it
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+ if ( obfuscateBlocks[i] )
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+ {
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+ Block block = Block.e(i);
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+ // Check it exists and is not a tile entity
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+ if ( block != null && !block.isTileEntity() )
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+ {
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+ // Add it to the set of replacement blocks
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+ blocks.add( (byte) i );
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+ }
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+ }
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+ }
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+ // Bake it to a flat array of replacements
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+ replacementOres = blocks.toArray();
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+ }
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+
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+ /**
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+ * Starts the timings handler, then updates all blocks within the set radius
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+ * of the given coordinate, revealing them if they are hidden ores.
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+ */
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+ public void updateNearbyBlocks(World world, int x, int y, int z)
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+ {
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+ if ( world.spigotConfig.antiXray )
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+ {
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+ update.startTiming();
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+ updateNearbyBlocks( world, x, y, z, 2, false ); // 2 is the radius, we shouldn't change it as that would make it exponentially slower
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+ update.stopTiming();
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+ }
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+ }
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+
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+ /**
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+ * Starts the timings handler, and then removes all non exposed ores from
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+ * the chunk buffer.
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+ */
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+ public void obfuscateSync(int chunkX, int chunkY, int bitmask, byte[] buffer, World world)
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+ {
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+ if ( world.spigotConfig.antiXray )
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+ {
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+ obfuscate.startTiming();
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+ obfuscate( chunkX, chunkY, bitmask, buffer, world );
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+ obfuscate.stopTiming();
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+ }
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+ }
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+
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+ /**
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+ * Removes all non exposed ores from the chunk buffer.
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+ */
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+ public void obfuscate(int chunkX, int chunkY, int bitmask, byte[] buffer, World world)
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+ {
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+ // If the world is marked as obfuscated
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+ if ( world.spigotConfig.antiXray )
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+ {
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+ // Initial radius to search around for air
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+ int initialRadius = 1;
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+ // Which block in the buffer we are looking at, anywhere from 0 to 16^4
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+ int index = 0;
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+ // The iterator marking which random ore we should use next
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+ int randomOre = 0;
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+
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+ // Chunk corner X and Z blocks
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+ int startX = chunkX << 4;
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+ int startZ = chunkY << 4;
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+
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+ // Chunks can have up to 16 sections
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+ for ( int i = 0; i < 16; i++ )
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+ {
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+ // If the bitmask indicates this chunk is sent...
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+ if ( ( bitmask & 1 << i ) != 0 )
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+ {
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+ // Work through all blocks in the chunk, y,z,x
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+ for ( int y = 0; y < 16; y++ )
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+ {
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+ for ( int z = 0; z < 16; z++ )
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+ {
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+ for ( int x = 0; x < 16; x++ )
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+ {
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+ // For some reason we can get too far ahead of ourselves (concurrent modification on bulk chunks?) so if we do, just abort and move on
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+ if ( index >= buffer.length )
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+ {
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+ continue;
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+ }
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+ // Grab the block ID in the buffer.
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+ // TODO: extended IDs are not yet supported
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+ int blockId = buffer[index] & 0xFF;
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+ // Check if the block should be obfuscated
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+ if ( obfuscateBlocks[blockId] )
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+ {
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+ // TODO: Don't really understand this, but if radius is not 0 and the world isn't loaded, bail out
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+ if ( initialRadius != 0 && !isLoaded( world, startX + x, ( i << 4 ) + y, startZ + z, initialRadius ) )
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+ {
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+ continue;
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+ }
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+ // On the otherhand, if radius is 0, or the nearby blocks are all non air, we can obfuscate
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+ if ( initialRadius == 0 || !hasTransparentBlockAdjacent( world, startX + x, ( i << 4 ) + y, startZ + z, initialRadius ) )
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+ {
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+ switch ( world.spigotConfig.engineMode )
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+ {
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+ case 1:
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+ // Replace with stone
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+ buffer[index] = 1;
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+ break;
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+ case 2:
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+ // Replace with random ore.
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+ if ( randomOre >= replacementOres.length )
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+ {
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+ randomOre = 0;
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+ }
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+ buffer[index] = replacementOres[randomOre++];
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+ break;
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+ }
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+ }
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+ }
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+
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+ index++;
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+ }
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+ }
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+ }
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+ }
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+ }
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+ }
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+ }
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+
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+ private void updateNearbyBlocks(World world, int x, int y, int z, int radius, boolean updateSelf)
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+ {
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+ // If the block in question is loaded
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+ if ( world.isLoaded( x, y, z ) )
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+ {
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+ // Get block id
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+ Block block = world.getType(x, y, z);
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+
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+ // See if it needs update
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+ if ( updateSelf && obfuscateBlocks[Block.b(block)] )
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+ {
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+ // Send the update
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+ world.notify( x, y, z );
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+ }
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+
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+ // Check other blocks for updates
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+ if ( radius > 0 )
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+ {
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+ updateNearbyBlocks( world, x + 1, y, z, radius - 1, true );
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+ updateNearbyBlocks( world, x - 1, y, z, radius - 1, true );
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+ updateNearbyBlocks( world, x, y + 1, z, radius - 1, true );
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+ updateNearbyBlocks( world, x, y - 1, z, radius - 1, true );
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+ updateNearbyBlocks( world, x, y, z + 1, radius - 1, true );
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+ updateNearbyBlocks( world, x, y, z - 1, radius - 1, true );
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+ }
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+ }
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+ }
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+
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+ private static boolean isLoaded(World world, int x, int y, int z, int radius)
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+ {
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+ return world.isLoaded( x, y, z )
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+ || ( radius > 0
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+ && ( isLoaded( world, x + 1, y, z, radius - 1 )
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+ || isLoaded( world, x - 1, y, z, radius - 1 )
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+ || isLoaded( world, x, y + 1, z, radius - 1 )
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+ || isLoaded( world, x, y - 1, z, radius - 1 )
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+ || isLoaded( world, x, y, z + 1, radius - 1 )
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+ || isLoaded( world, x, y, z - 1, radius - 1 ) ) );
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+ }
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+
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+ private static boolean hasTransparentBlockAdjacent(World world, int x, int y, int z, int radius)
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+ {
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+ return !world.getType(x, y, z).r() /* isSolidBlock */
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+ || ( radius > 0
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+ && ( hasTransparentBlockAdjacent( world, x + 1, y, z, radius - 1 )
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+ || hasTransparentBlockAdjacent( world, x - 1, y, z, radius - 1 )
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+ || hasTransparentBlockAdjacent( world, x, y + 1, z, radius - 1 )
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+ || hasTransparentBlockAdjacent( world, x, y - 1, z, radius - 1 )
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+ || hasTransparentBlockAdjacent( world, x, y, z + 1, radius - 1 )
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+ || hasTransparentBlockAdjacent( world, x, y, z - 1, radius - 1 ) ) );
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+ }
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+}
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diff --git a/src/main/java/org/spigotmc/SpigotWorldConfig.java b/src/main/java/org/spigotmc/SpigotWorldConfig.java
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index 97d56bd..3a4f338 100644
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--- a/src/main/java/org/spigotmc/SpigotWorldConfig.java
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+++ b/src/main/java/org/spigotmc/SpigotWorldConfig.java
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@@ -1,5 +1,6 @@
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package org.spigotmc;
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+import java.util.Arrays;
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import java.util.List;
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import org.bukkit.Bukkit;
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import org.bukkit.configuration.file.YamlConfiguration;
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@@ -127,4 +128,29 @@ public class SpigotWorldConfig
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viewDistance = getInt( "view-distance", Bukkit.getViewDistance() );
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log( "View Distance: " + viewDistance );
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}
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+
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+ public boolean antiXray = true;
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+ public int engineMode = 1;
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+ public List<Integer> blocks = Arrays.asList( new Integer[]
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+ {
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+ 1, 5, 14, 15, 16, 21, 48, 49, 54, 56, 73, 74, 82, 129, 130
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+ } );
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+ public AntiXray antiXrayInstance;
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+ private void antiXray()
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+ {
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+ antiXray = getBoolean( "anti-xray.enabled", antiXray );
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+ log( "Anti X-Ray: " + antiXray );
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+
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+ engineMode = getInt( "anti-xray.engine-mode", engineMode );
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+ log( "\tEngine Mode: " + engineMode );
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+
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+ if ( SpigotConfig.version < 3 )
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+ {
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+ set( "anti-xray.blocks", blocks );
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+ }
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+ blocks = getList( "anti-xray.blocks", blocks );
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+ log( "\tBlocks: " + blocks );
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+
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+ antiXrayInstance = new AntiXray( this );
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+ }
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}
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--
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1.8.3.2
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