it: fix test

integration-testing/src/test_scenes.rs

@@ -122,10 +122,11 @@ fn press_w(){
 		instruction:strafesnet_common::physics::Instruction::SetControl(strafesnet_common::physics::SetControlInstruction::SetMoveForward(true)),
 	});
 	// wait 10 ms
+	const SAMPLE_TIME:strafesnet_common::physics::Time=Time::from_millis(10);
 	PhysicsContext::run_input_instruction(&mut physics,&physics_data,strafesnet_common::instruction::TimedInstruction{
-		time:Time::from_millis(10),
+		time:SAMPLE_TIME,
 		instruction:strafesnet_common::physics::Instruction::Idle,
 	});
 	// observe current velocity
-	assert_eq!(physics.body().velocity,vec3::raw_xyz(0,-1<<32,-0x2b3333333));
+	assert_eq!(physics.camera_trajectory(&physics_data).extrapolated_velocity(SAMPLE_TIME),vec3::raw_xyz(0,-1<<32,-0x2b3333333));
 }