bit map: implement std::fmt::Debug

protocol/src/types/bit/map.rs

@@ -116,3 +116,15 @@ impl Map {
         }
     }
 }
+
+use std::fmt;
+
+impl fmt::Debug for Map {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "BitMap({})=<", self.bit_size)?;
+        for i in 0..self.bit_size {
+            write!(f, "{}", self.get(i))?;
+        }
+        write!(f, ">")
+    }
+}

src/world/mod.rs

@@ -1078,8 +1078,10 @@ impl World {
                 }
 
                 let bits = LenPrefixed::<VarInt, u64>::read_from(&mut data)?.data;
+                println!("bits = {:?}", bits);
                 let padded = self.protocol_version >= 736;
                 let m = bit::Map::from_raw(bits, bit_size as usize, padded);
+                println!("m = {:?}", m);
 
                 for bi in 0..4096 {
                     let id = m.get(bi);