fixing build

.gitignore

@@ -34,3 +34,5 @@ lib/generated_plugin_registrant.dart
 
 # Exceptions to above rules.
 !/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
+
+.flutter-plugins-dependencies

lib/game/game.dart

@@ -1,7 +1,7 @@
 import 'dart:ui';
 
 import 'package:flame/game.dart';
-import 'package:trex/game/Horizon/horizon.dart';
+import 'package:trex/game/horizon/horizon.dart';
 import 'package:trex/game/collision/collision_utils.dart';
 import 'package:trex/game/game_config.dart';
 import 'package:trex/game/game_over/game_over.dart';

pubspec.lock

@@ -7,7 +7,7 @@ packages:
       name: archive
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.10"
+    version: "2.0.11"
   args:
     dependency: transitive
     description:
@@ -21,7 +21,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.3.0"
+    version: "2.4.0"
   audioplayers:
     dependency: transitive
     description:
@@ -129,14 +129,14 @@ packages:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.5"
+    version: "0.12.6"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.7"
+    version: "1.1.8"
   ordered_set:
     dependency: transitive
     description:
@@ -253,7 +253,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.5"
+    version: "0.2.11"
   tiled:
     dependency: transitive
     description: