From d65a2c783da7cab757e815dccb957420f9dad9ec Mon Sep 17 00:00:00 2001
From: Carter Anderson <mcanders1@gmail.com>
Date: Wed, 3 Jun 2020 11:12:39 -0700
Subject: [PATCH] bytes: impl for Vec<T>

---
 crates/bevy_core/src/bytes.rs | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/crates/bevy_core/src/bytes.rs b/crates/bevy_core/src/bytes.rs
index 6b67049e95..6b217cd5cd 100644
--- a/crates/bevy_core/src/bytes.rs
+++ b/crates/bevy_core/src/bytes.rs
@@ -43,7 +43,7 @@ where
     }
 }
 
-unsafe impl<T> Byteable for [T] where Self: Sized {}
+unsafe impl<T> Byteable for [T] where Self: Sized, T: Byteable {}
 unsafe impl<T> Byteable for [T; 2] where T: Byteable {}
 unsafe impl<T> Byteable for [T; 3] where T: Byteable {}
 unsafe impl<T> Byteable for [T; 4] where T: Byteable {}
@@ -78,7 +78,8 @@ impl Bytes for Vec3 {
         array.write_bytes(buffer);
     }
     fn byte_len(&self) -> usize {
-        std::mem::size_of::<Self>()
+        // cant use self here because Vec3 is a simd type / technically a vec4
+        std::mem::size_of::<[f32;3]>()
     }
 }
 
@@ -115,3 +116,16 @@ where
         self.as_ref().map_or(0, |val| val.byte_len())
     }
 }
+
+impl<T> Bytes for Vec<T>
+where
+    T: Sized + Byteable,
+{
+    fn write_bytes(&self, buffer: &mut [u8]) {
+        let bytes = self.as_slice().as_bytes();
+        buffer[0..self.byte_len()].copy_from_slice(bytes)
+    }
+    fn byte_len(&self) -> usize {
+        self.as_slice().as_bytes().len()
+    }
+}
\ No newline at end of file