Initial block model support

protocol/src/types/blockpos.rs

@@ -17,7 +17,7 @@ extern crate byteorder;
 use std::fmt;
 use protocol::Serializable;
 use std::io;
-use std::io::{Read, Write};
+use std::io::Write;
 use self::byteorder::{BigEndian, WriteBytesExt, ReadBytesExt};
 
 #[derive(Clone, Copy)]

protocol/src/types/hash.rs

@@ -0,0 +1,24 @@
+
+
+use std::hash::Hasher;
+
+pub struct FNVHash(u64);
+
+impl Hasher for FNVHash {
+    fn write(&mut self, bytes: &[u8]) {
+        for b in bytes {
+            self.0 = self.0.wrapping_mul(0x100000001b3);
+            self.0 ^= *b as u64
+        }
+    }
+
+    fn finish(&self) -> u64 {
+        self.0
+    }
+}
+
+impl Default for FNVHash {
+    fn default() -> Self {
+        FNVHash(0xcbf29ce484222325)
+    }
+}

protocol/src/types/mod.rs

@@ -20,3 +20,4 @@ pub use self::metadata::*;
 
 pub mod bit;
 pub mod nibble;
+pub mod hash;