feat: adjusted camera (#294)

packages/trashy_road/lib/src/game/game.dart

@@ -5,6 +5,7 @@ import 'package:flame/cache.dart';
 import 'package:flame/camera.dart';
 import 'package:flame/components.dart';
 import 'package:flame/events.dart';
+import 'package:flame/experimental.dart';
 import 'package:flame/game.dart';
 import 'package:flame_bloc/flame_bloc.dart';
 import 'package:flame_tiled/flame_tiled.dart';
@@ -54,11 +55,20 @@ class TrashyRoadGame extends FlameGame
 
   late final Player _player;
 
+  TrashyRoadWorld? _trashyRoadWorld;
+
   @override
   Color backgroundColor() {
     return Colors.transparent;
   }
 
+  @override
+  void onGameResize(Vector2 size) {
+    super.onGameResize(size);
+    _updateBounds();
+    _updateZoom();
+  }
+
   @override
   FutureOr<void> onLoad() async {
     await super.onLoad();
@@ -68,7 +78,8 @@ class TrashyRoadGame extends FlameGame
       GameSettings.gridDimensions,
     );
     final tiled = TiledComponent(renderableTiledMap);
-    final trashyRoadWorld = TrashyRoadWorld.create(tiled: tiled);
+    final trashyRoadWorld =
+        _trashyRoadWorld = TrashyRoadWorld.create(tiled: tiled);
     children.register<TrashyRoadWorld>();
 
     final blocProvider = FlameBlocProvider<GameBloc, GameState>(
@@ -85,15 +96,33 @@ class TrashyRoadGame extends FlameGame
     world.add(blocProvider);
 
     _player = trashyRoadWorld.tiled.children.whereType<Player>().first;
-    _player.children.register<PlayerDragMovingBehavior>();
-
     camera.follow(_player);
+    _updateBounds();
   }
 
-  @override
-  void onGameResize(Vector2 size) {
-    super.onGameResize(size);
+  void _updateBounds() {
+    final worldBounds = _trashyRoadWorld?.bounds;
+    if (worldBounds == null) return;
+
+    final viewportHalf = camera.viewport.size / 2;
+
+    final cameraBounds = Rectangle.fromPoints(
+      worldBounds.topLeft + viewportHalf,
+      worldBounds.bottomRight - viewportHalf,
+    );
+    camera.setBounds(cameraBounds);
+  }
+
+  void _updateZoom() {
+    final size = camera.viewport.size;
     camera.viewfinder.zoom = (size.x / resolution.width) + 0.2;
+
+    final isPortrait = size.y > size.x;
+    if (isPortrait) {
+      // Increase the zoom on those mobile devices with a portrait aspect ratio
+      // to make the game look better, rather than too zoomed out.
+      camera.viewfinder.zoom += 0.4;
+    }
   }
 
   @override