From c5ce275612af6569efd7eb2d9683ca6578178ad3 Mon Sep 17 00:00:00 2001
From: Paul Hameteman <paul.hameteman@ns.nl>
Date: Tue, 14 Oct 2025 23:11:40 +0200
Subject: [PATCH] R: ktlint

---
 TECHDEBT.md                          | 4 ++--
 src/main/kotlin/org/example/Rover.kt | 8 +++++---
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/TECHDEBT.md b/TECHDEBT.md
index ed1a666..555cbb8 100644
--- a/TECHDEBT.md
+++ b/TECHDEBT.md
@@ -8,8 +8,8 @@
 
 # Mikado
 - [ ] Change var to val (immutable)
-  - [ ] Rover.turnLeft use copy() on state
-  - [ ] Rover.turnRight use copy() on state
+  - [x] Rover.turnLeft use copy() on state
+  - [x] Rover.turnRight use copy() on state
   - [x] Rover.move use copy() on state
   - [x] Rover.constructor use copy() on state
     - [x] Change RoverState to Data Class
diff --git a/src/main/kotlin/org/example/Rover.kt b/src/main/kotlin/org/example/Rover.kt
index e88a8f7..4a81f94 100644
--- a/src/main/kotlin/org/example/Rover.kt
+++ b/src/main/kotlin/org/example/Rover.kt
@@ -8,7 +8,9 @@ class Rover {
                 state.copy(
                     positionX = command[ROVER_STARTING_POSITION_X].toInt(),
                     positionY = command[ROVER_STARTING_POSITION_Y].toInt(),
-                    heading = Heading.from(command[ROVER_FACING_DIRECTION][ROVER_COMMANDLIST_DIRECTION]) ?: state.heading,
+                    heading =
+                        Heading.from(command[ROVER_FACING_DIRECTION][ROVER_COMMANDLIST_DIRECTION])
+                            ?: state.heading,
                 )
         }
     }
@@ -29,11 +31,11 @@ class Rover {
     }
 
     private fun turnRight() {
-        state.heading = state.heading.turnRight()
+        state = state.copy(heading = state.heading.turnRight())
     }
 
     private fun turnLeft() {
-        state.heading = state.heading.turnLeft()
+        state = state.copy(heading = state.heading.turnLeft())
     }
 
     val position: String