diff --git a/src/physics.rs b/src/physics.rs
index c5d78bb..1da6608 100644
--- a/src/physics.rs
+++ b/src/physics.rs
@@ -103,7 +103,7 @@ impl InputState{
 		&self.next_mouse
 	}
 	fn set_next_mouse(&mut self,next_mouse:MouseState){
-		(self.next_mouse,self.mouse)=(next_mouse,self.next_mouse);
+		(self.next_mouse,self.mouse)=(next_mouse,self.next_mouse.clone());
 	}
 	fn replace_mouse(&mut self,mouse:MouseState,next_mouse:MouseState){
 		(self.next_mouse,self.mouse)=(next_mouse,mouse);
@@ -111,13 +111,13 @@ impl InputState{
 	fn set_control(&mut self,control:Controls,state:bool){
 		self.controls.set(control,state)
 	}
-	const fn time_delta(&self)->Time{
+	fn time_delta(&self)->Time{
 		self.next_mouse.time-self.mouse.time
 	}
-	const fn mouse_delta(&self)->glam::IVec2{
+	fn mouse_delta(&self)->glam::IVec2{
 		self.next_mouse.pos-self.mouse.pos
 	}
-	const fn lerp_delta(&self,time:Time)->glam::IVec2{
+	fn lerp_delta(&self,time:Time)->glam::IVec2{
 		//these are deltas
 		let dm=self.mouse_delta().as_i64vec2();
 		let t=(time-self.mouse.time).nanos();