From 06423b67c8c3f4e827d5fbe6d81b74453723811e Mon Sep 17 00:00:00 2001
From: Nathan Jeffords <njeffords@comtechefdata.com>
Date: Sun, 11 Oct 2020 10:49:13 -0700
Subject: [PATCH] add version of the ecs's `write_world` method that takes a
 pre-boxed world writer

---
 crates/bevy_ecs/src/system/commands.rs | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/crates/bevy_ecs/src/system/commands.rs b/crates/bevy_ecs/src/system/commands.rs
index 04e68b002d88d..90cab955f5e76 100644
--- a/crates/bevy_ecs/src/system/commands.rs
+++ b/crates/bevy_ecs/src/system/commands.rs
@@ -219,8 +219,11 @@ impl CommandsInternal {
     }
 
     pub fn write_world<W: WorldWriter + 'static>(&mut self, world_writer: W) -> &mut Self {
-        self.commands
-            .push(Command::WriteWorld(Box::new(world_writer)));
+        self.write_world_boxed(Box::new(world_writer))
+    }
+
+    pub fn write_world_boxed(&mut self, world_writer: Box<dyn WorldWriter + 'static>) -> &mut Self {
+        self.commands.push(Command::WriteWorld(world_writer));
         self
     }
 
@@ -313,6 +316,11 @@ impl Commands {
         self
     }
 
+    pub fn write_world_boxed(&mut self, world_writer: Box<dyn WorldWriter + 'static>) -> &mut Self {
+        self.commands.lock().write_world_boxed(world_writer);
+        self
+    }
+
     pub fn write_resources<W: ResourcesWriter + 'static>(
         &mut self,
         resources_writer: W,