feat(types): entity downcasting and fnmut in world creation

1 files changed, 17 insertions, 2 deletions

diff --git a/stockton-types/src/world.rs b/stockton-types/src/world.rs
index f687f5e..18a0edf 100644
--- a/stockton-types/src/world.rs
+++ b/stockton-types/src/world.rs
@@ -1,3 +1,18 @@
+// Copyright (C) Oscar Shrimpton 2019  
+
+// This program is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 //! The thing you play on and all the associated state.
 
 use crate::{EntityStore, Entity};
@@ -19,8 +34,8 @@ impl<'a> World<'a> {
 	/// Returns None if any entities in the map have name conflicts.
 	///
 	/// `mapper` is called for each BSPEntity to map it to a concrete rust type.
-	pub fn new<F>(bsp: Pin<Box<BSPFile<'a>>>, mapper: F) -> Option<World<'a>>
-		where F: Fn(&BSPEntity) -> (Box<Entity>, String) {
+	pub fn new<F>(bsp: Pin<Box<BSPFile<'a>>>, mut mapper: F) -> Option<World<'a>>
+		where F: FnMut(&BSPEntity) -> (Box<Entity>, String) {
 
 		let mut entities: Vec<(Box<Entity>, String)> = Vec::with_capacity(bsp.entities.entities.len());
 		for bsp_ent in bsp.entities.entities.iter() {