From 382262575decd27c797a9a40531f2c0ff0e8c760 Mon Sep 17 00:00:00 2001
From: fiatcode <fiatcode@posteo.com>
Date: Tue, 24 Feb 2026 10:45:58 +0700
Subject: [PATCH] GREEN: implement turn left

---
 lib/mars_rover.dart | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/mars_rover.dart b/lib/mars_rover.dart
index 2acdf8c..f26f722 100644
--- a/lib/mars_rover.dart
+++ b/lib/mars_rover.dart
@@ -4,4 +4,14 @@ class Rover {
   String direction;
 
   Rover({required this.x, required this.y, required this.direction});
+
+  void turnLeft() {
+    const leftTurns = {
+      'N': 'W',
+      'W': 'S',
+      'S': 'E',
+      'E': 'N',
+    };
+    direction = leftTurns[direction]!;
+  }
 }