diff --git a/src/fot/esh.rs b/src/fot/esh.rs
index 087d9f4..501c5e7 100644
--- a/src/fot/esh.rs
+++ b/src/fot/esh.rs
@@ -6,6 +6,12 @@ use super::stream::{ReadStream, WriteStream};
 use anyhow::Result;
 use indexmap::IndexMap;
 
+#[derive(Debug)]
+pub struct ESHUnknown {
+    pub data_type: u32,
+    pub data: Vec<u8>
+}
+
 #[derive(Debug)]
 pub struct ESHEntityFlags {
     pub entity_id: u16,
@@ -30,6 +36,7 @@ pub struct ESHRect {
 
 #[derive(Debug)]
 pub enum ESHValue {
+    Unknown(ESHUnknown),
     Bool(bool),
     Float(f32),
     Int(i32),
@@ -41,6 +48,18 @@ pub enum ESHValue {
     Rect(ESHRect)
 }
 
+impl ESHValue {
+    const TYPE_BOOL: u32 = 1;
+    const TYPE_FLOAT: u32 = 2;
+    const TYPE_INT: u32 = 3;
+    const TYPE_STRING: u32 = 4;
+    const TYPE_SPRITE: u32 = 8;
+    const TYPE_ESBIN: u32 = 11;
+    const TYPE_ENTTITYFLAGS: u32 = 12;
+    const TYPE_FRAME: u32 = 13;
+    const TYPE_RECT: u32 = 14;
+}
+
 #[derive(Debug)]
 pub struct ESH {
     pub tag: Tag,
diff --git a/src/fot/stream.rs b/src/fot/stream.rs
index d47c27e..59b205a 100644
--- a/src/fot/stream.rs
+++ b/src/fot/stream.rs
@@ -52,9 +52,17 @@ impl<'a> ReadStream<'a> {
         Ok(self.rdr.read_u16::<LittleEndian>()?)
     }
 
+    pub fn read_i32(&mut self) -> Result<i32> {
+        Ok(self.rdr.read_i32::<LittleEndian>()?)
+    }
+
     pub fn read_u32(&mut self) -> Result<u32> {
         Ok(self.rdr.read_u32::<LittleEndian>()?)
     }
+
+    pub fn read_f32(&mut self) -> Result<f32> {
+        Ok(self.rdr.read_f32::<LittleEndian>()?)
+    }
 }
 
 pub struct WriteStream {
@@ -95,7 +103,15 @@ impl WriteStream {
         Ok(self.buf.write_u16::<LittleEndian>(val)?)
     }
 
+    pub fn write_i32(&mut self, val: i32) -> Result<()> {
+        Ok(self.buf.write_i32::<LittleEndian>(val)?)
+    }
+
     pub fn write_u32(&mut self, val: u32) -> Result<()> {
         Ok(self.buf.write_u32::<LittleEndian>(val)?)
     }
+
+    pub fn write_f32(&mut self, val: f32) -> Result<()> {
+        Ok(self.buf.write_f32::<LittleEndian>(val)?)
+    }
 }