Fix incorrect connecting block handling (legacy versions)

GrimAnticheat · Dec 10, 2023 · d91b920 · d91b920
1 parent 2a534bf
commit d91b920
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Showing 6 changed files with 45 additions and 12 deletions.
diff --git a/src/main/java/ac/grim/grimac/utils/collisions/blocks/connecting/DynamicConnecting.java b/src/main/java/ac/grim/grimac/utils/collisions/blocks/connecting/DynamicConnecting.java
@@ -1,7 +1,11 @@
 package ac.grim.grimac.utils.collisions.blocks.connecting;
 
 import ac.grim.grimac.player.GrimPlayer;
-import ac.grim.grimac.utils.collisions.datatypes.*;
+import ac.grim.grimac.utils.collisions.datatypes.CollisionBox;
+import ac.grim.grimac.utils.collisions.datatypes.ComplexCollisionBox;
+import ac.grim.grimac.utils.collisions.datatypes.HexCollisionBox;
+import ac.grim.grimac.utils.collisions.datatypes.NoCollisionBox;
+import ac.grim.grimac.utils.collisions.datatypes.SimpleCollisionBox;
 import ac.grim.grimac.utils.nmsutil.Materials;
 import com.github.retrooper.packetevents.PacketEvents;
 import com.github.retrooper.packetevents.manager.server.ServerVersion;
@@ -76,7 +80,7 @@ public boolean connectsTo(GrimPlayer player, ClientVersion v, int currX, int cur
         } else {
             if (fence == target) return true;
 
-            return checkCanConnect(player, targetBlock, target, fence);
+            return checkCanConnect(player, targetBlock, target, fence, direction);
         }
     }
 
@@ -85,7 +89,7 @@ boolean isBlacklisted(StateType m, StateType fence, ClientVersion clientVersion)
         if (BlockTags.SHULKER_BOXES.contains(m)) return true;
         if (BlockTags.TRAPDOORS.contains(m)) return true;
 
-        return m == StateTypes.CARVED_PUMPKIN || m == StateTypes.JACK_O_LANTERN || m == StateTypes.PUMPKIN || m == StateTypes.MELON ||
+        return m == StateTypes.ENCHANTING_TABLE || m == StateTypes.CARVED_PUMPKIN || m == StateTypes.JACK_O_LANTERN || m == StateTypes.PUMPKIN || m == StateTypes.MELON ||
                 m == StateTypes.BEACON || BlockTags.CAULDRONS.contains(m) || m == StateTypes.GLOWSTONE || m == StateTypes.SEA_LANTERN || m == StateTypes.ICE
                 || m == StateTypes.PISTON || m == StateTypes.STICKY_PISTON || m == StateTypes.PISTON_HEAD || (!canConnectToGlassBlock()
                 && BlockTags.GLASS_BLOCKS.contains(m));
@@ -113,7 +117,7 @@ protected int getAABBIndex(boolean north, boolean east, boolean south, boolean w
         return i;
     }
 
-    public boolean checkCanConnect(GrimPlayer player, WrappedBlockState state, StateType one, StateType two) {
+    public boolean checkCanConnect(GrimPlayer player, WrappedBlockState state, StateType one, StateType two, BlockFace direction) {
         return false;
     }
 

diff --git a/src/main/java/ac/grim/grimac/utils/collisions/blocks/connecting/DynamicFence.java b/src/main/java/ac/grim/grimac/utils/collisions/blocks/connecting/DynamicFence.java
@@ -23,7 +23,6 @@ public class DynamicFence extends DynamicConnecting implements CollisionFactory
 
     public static SimpleCollisionBox[] LEGACY_BOUNDING_BOXES = new SimpleCollisionBox[] {new SimpleCollisionBox(0.375D, 0.0D, 0.375D, 0.625D, 1.0D, 0.625D), new SimpleCollisionBox(0.375D, 0.0D, 0.375D, 0.625D, 1.0D, 1.0D), new SimpleCollisionBox(0.0D, 0.0D, 0.375D, 0.625D, 1.0D, 0.625D), new SimpleCollisionBox(0.0D, 0.0D, 0.375D, 0.625D, 1.0D, 1.0D), new SimpleCollisionBox(0.375D, 0.0D, 0.0D, 0.625D, 1.0D, 0.625D), new SimpleCollisionBox(0.375D, 0.0D, 0.0D, 0.625D, 1.0D, 1.0D), new SimpleCollisionBox(0.0D, 0.0D, 0.0D, 0.625D, 1.0D, 0.625D), new SimpleCollisionBox(0.0D, 0.0D, 0.0D, 0.625D, 1.0D, 1.0D), new SimpleCollisionBox(0.375D, 0.0D, 0.375D, 1.0D, 1.0D, 0.625D), new SimpleCollisionBox(0.375D, 0.0D, 0.375D, 1.0D, 1.0D, 1.0D), new SimpleCollisionBox(0.0D, 0.0D, 0.375D, 1.0D, 1.0D, 0.625D), new SimpleCollisionBox(0.0D, 0.0D, 0.375D, 1.0D, 1.0D, 1.0D), new SimpleCollisionBox(0.375D, 0.0D, 0.0D, 1.0D, 1.0D, 0.625D), new SimpleCollisionBox(0.375D, 0.0D, 0.0D, 1.0D, 1.0D, 1.0D), new SimpleCollisionBox(0.0D, 0.0D, 0.0D, 1.0D, 1.0D, 0.625D), new SimpleCollisionBox(0.0D, 0.0D, 0.0D, 1.0D, 1.0D, 1.0D)};
 
-
     @Override
     public CollisionBox fetch(GrimPlayer player, ClientVersion version, WrappedBlockState block, int x, int y, int z) {
         boolean east;
@@ -49,10 +48,10 @@ public CollisionBox fetch(GrimPlayer player, ClientVersion version, WrappedBlock
     }
 
     @Override
-    public boolean checkCanConnect(GrimPlayer player, WrappedBlockState state, StateType one, StateType two) {
+    public boolean checkCanConnect(GrimPlayer player, WrappedBlockState state, StateType one, StateType two, BlockFace direction) {
         if (BlockTags.FENCES.contains(one))
             return !(one == StateTypes.NETHER_BRICK_FENCE) && !(two == StateTypes.NETHER_BRICK_FENCE);
         else
-            return BlockTags.FENCES.contains(one) || CollisionData.getData(one).getMovementCollisionBox(player, player.getClientVersion(), state, 0, 0, 0).isFullBlock();
+            return BlockTags.FENCES.contains(one) || CollisionData.getData(one).getMovementCollisionBox(player, player.getClientVersion(), state, 0, 0, 0).isSideFullBlock(direction);
     }
 }
diff --git a/src/main/java/ac/grim/grimac/utils/collisions/blocks/connecting/DynamicPane.java b/src/main/java/ac/grim/grimac/utils/collisions/blocks/connecting/DynamicPane.java
@@ -82,12 +82,11 @@ public boolean canConnectToGlassBlock() {
         return true;
     }
 
-
     @Override
-    public boolean checkCanConnect(GrimPlayer player, WrappedBlockState state, StateType one, StateType two) {
+    public boolean checkCanConnect(GrimPlayer player, WrappedBlockState state, StateType one, StateType two, BlockFace direction) {
         if (BlockTags.GLASS_PANES.contains(one) || one == StateTypes.IRON_BARS)
             return true;
         else
-            return CollisionData.getData(one).getMovementCollisionBox(player, player.getClientVersion(), state, 0, 0, 0).isFullBlock();
+            return CollisionData.getData(one).getMovementCollisionBox(player, player.getClientVersion(), state, 0, 0, 0).isSideFullBlock(direction);
     }
 }
diff --git a/src/main/java/ac/grim/grimac/utils/collisions/blocks/connecting/DynamicWall.java b/src/main/java/ac/grim/grimac/utils/collisions/blocks/connecting/DynamicWall.java
@@ -14,6 +14,7 @@
 import com.github.retrooper.packetevents.protocol.world.states.enums.South;
 import com.github.retrooper.packetevents.protocol.world.states.enums.West;
 import com.github.retrooper.packetevents.protocol.world.states.type.StateType;
+import com.github.retrooper.packetevents.protocol.world.states.type.StateTypes;
 
 public class DynamicWall extends DynamicConnecting implements CollisionFactory {
     public static final CollisionBox[] BOXES = makeShapes(4.0F, 3.0F, 16.0F, 0.0F, 16.0F, false);
@@ -181,7 +182,7 @@ public CollisionBox fetch(GrimPlayer player, ClientVersion version, WrappedBlock
     }
 
     @Override
-    public boolean checkCanConnect(GrimPlayer player, WrappedBlockState state, StateType one, StateType two) {
-        return BlockTags.WALLS.contains(one) || CollisionData.getData(one).getMovementCollisionBox(player, player.getClientVersion(), state, 0, 0, 0).isFullBlock();
+    public boolean checkCanConnect(GrimPlayer player, WrappedBlockState state, StateType one, StateType two, BlockFace direction) {
+        return BlockTags.WALLS.contains(one) || CollisionData.getData(one).getMovementCollisionBox(player, player.getClientVersion(), state, 0, 0, 0).isSideFullBlock(direction);
     }
 }
diff --git a/src/main/java/ac/grim/grimac/utils/collisions/datatypes/CollisionBox.java b/src/main/java/ac/grim/grimac/utils/collisions/datatypes/CollisionBox.java
@@ -1,5 +1,7 @@
 package ac.grim.grimac.utils.collisions.datatypes;
 
+import com.github.retrooper.packetevents.protocol.world.BlockFace;
+
 import java.util.List;
 
 public interface CollisionBox {
@@ -16,4 +18,8 @@ public interface CollisionBox {
     boolean isNull();
 
     boolean isFullBlock();
+
+    default boolean isSideFullBlock(BlockFace axis) {
+        return isFullBlock();
+    }
 }
diff --git a/src/main/java/ac/grim/grimac/utils/collisions/datatypes/SimpleCollisionBox.java b/src/main/java/ac/grim/grimac/utils/collisions/datatypes/SimpleCollisionBox.java
@@ -1,6 +1,7 @@
 package ac.grim.grimac.utils.collisions.datatypes;
 
 import ac.grim.grimac.utils.nmsutil.Ray;
+import com.github.retrooper.packetevents.protocol.world.BlockFace;
 import com.github.retrooper.packetevents.util.Vector3d;
 import com.github.retrooper.packetevents.util.Vector3i;
 import org.bukkit.Location;
@@ -240,6 +241,29 @@ public boolean isFullBlock() {
         return isFullBlock;
     }
 
+    @Override
+    public boolean isSideFullBlock(BlockFace axis) {
+        if (isFullBlock) {
+            return true;
+        }
+
+        // Get the direction of block we are trying to connect to -> towards the block that is trying to connect
+        final BlockFace faceToSourceConnector = axis.getOppositeFace();
+        switch (faceToSourceConnector) {
+            case EAST:
+            case WEST:
+                return this.minX == 0 && this.maxX == 1;
+            case UP:
+            case DOWN:
+                return this.minY == 0 && this.maxY == 1;
+            case NORTH:
+            case SOUTH:
+                return this.minZ == 0 && this.maxZ == 1;
+        }
+
+        return false;
+    }
+
     public boolean isFullBlockNoCache() {
         return minX == 0 && minY == 0 && minZ == 0 && maxX == 1 && maxY == 1 && maxZ == 1;
     }