epicer cached bedrock level pathing

src/main/java/baritone/cache/CachedChunk.java

@@ -26,7 +26,10 @@ import net.minecraft.block.state.IBlockState;
 import net.minecraft.init.Blocks;
 import net.minecraft.util.math.BlockPos;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.BitSet;
+import java.util.List;
+import java.util.Map;
 
 /**
  * @author Brady
@@ -179,9 +182,18 @@ public final class CachedChunk {
             }
         }
 
-        if (type == PathingBlockType.SOLID && y == 127 && dimension == -1) {
+        if (type == PathingBlockType.SOLID) {
+            if (y == 127 && dimension == -1) {
+                // nether roof is always unbreakable
                 return Blocks.BEDROCK.getDefaultState();
             }
+            if (y < 5 && dimension == 0) {
+                // solid blocks below 5 are commonly bedrock
+                // however, returning bedrock always would be a little yikes
+                // discourage paths that include breaking blocks below 5 a little more heavily just so that it takes paths breaking what's known to be stone (at 5 or above) instead of what could maybe be bedrock (below 5)
+                return Blocks.OBSIDIAN.getDefaultState();
+            }
+        }
         return ChunkPacker.pathingTypeToBlock(type, dimension);
     }