From 708281661fb44bffbdff5960af0c5a727770f93d Mon Sep 17 00:00:00 2001
From: Aron Granberg <aron.granberg@gmail.com>
Date: Sat, 20 Jan 2018 17:01:32 +0100
Subject: [PATCH] Make rocket research reduce travel time, not increase it

---
 battlecode-engine/src/world.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/battlecode-engine/src/world.rs b/battlecode-engine/src/world.rs
index e940672..b090eff 100644
--- a/battlecode-engine/src/world.rs
+++ b/battlecode-engine/src/world.rs
@@ -1974,7 +1974,7 @@ impl GameWorld {
         self.my_unit_mut(rocket_id)?.launch_rocket();
 
         let landing_round = self.round + self.orbit.duration(self.round)
-            + self.my_unit(rocket_id)?.rocket_travel_time_decrease().unwrap();
+            - self.my_unit(rocket_id)?.rocket_travel_time_decrease().unwrap();
         self.my_team_mut().rocket_landings.add_landing(
             landing_round, RocketLanding::new(rocket_id, destination)
         );