Enabling direct import of Sprite and SpriteAnimation (#652)

* Enabling direct import of Sprite and SpriteAnimation

* Renan follow up

* Fixing spritesheet exmaple

Co-authored-by: Erick Zanardo <erickzanardoo@gmail.com>

CHANGELOG.md

@@ -5,6 +5,7 @@
  - Moving render functions from `util.dart` to `extensions/canvas.dart`
  - Adapting ParallaxComponent contructors to match the pattern followed on other components
  - Adapting SpriteBatchComponent constructors to match the pattern used on other components
+ - Enabling direct import of Sprite and SpriteAnimation
  - Renamed `Composition` to `ImageComposition` to prevent confusion with the composition component
  - Added `rotation` and `anchor` arguments to `ImageComposition.add`
 

doc/examples/isometric/lib/main.dart

@@ -1,7 +1,7 @@
 import 'package:flame/components.dart';
 import 'package:flame/game.dart';
 import 'package:flame/gestures.dart';
-import 'package:flame/spritesheet.dart';
+import 'package:flame/sprite.dart';
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart' hide Image;
 

doc/examples/particles/lib/main.dart

@@ -6,7 +6,7 @@ import 'package:flame/components.dart' hide Timer;
 import 'package:flame/timer.dart' as flame_timer;
 import 'package:flame/game.dart';
 import 'package:flame/particles.dart';
-import 'package:flame/spritesheet.dart';
+import 'package:flame/sprite.dart';
 import 'package:flutter/material.dart' hide Image;
 
 void main() async {

doc/examples/sprite_batch/lib/main.dart

@@ -3,7 +3,7 @@ import 'dart:math';
 import 'package:flame/components.dart';
 import 'package:flutter/material.dart';
 import 'package:flame/game.dart';
-import 'package:flame/sprite_batch.dart';
+import 'package:flame/sprite.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();

doc/examples/sprite_batch/lib/main_auto_loading.dart

@@ -1,6 +1,6 @@
 import 'dart:math';
 
-import 'package:flame/sprite_batch.dart';
+import 'package:flame/sprite.dart';
 import 'package:flame/components.dart';
 import 'package:flutter/material.dart';
 import 'package:flame/game.dart';

doc/examples/spritesheet/lib/main.dart

@@ -1,6 +1,6 @@
 import 'package:flame/components.dart';
 import 'package:flame/game.dart';
-import 'package:flame/spritesheet.dart';
+import 'package:flame/sprite.dart';
 import 'package:flutter/material.dart';
 
 void main() async {

doc/examples/widgets/lib/main.dart

@@ -2,7 +2,7 @@ import 'package:flame/extensions.dart';
 import 'package:flame/widgets.dart';
 import 'package:flutter/material.dart' hide Animation;
 import 'package:flame/flame.dart';
-import 'package:flame/spritesheet.dart';
+import 'package:flame/sprite.dart';
 import 'package:dashbook/dashbook.dart';
 
 Anchor parseAnchor(String name) {

doc/images.md

@@ -45,6 +45,7 @@ Example:
 
 ```dart
 import 'package:flame/flame.dart';
+import 'package:flame/sprite.dart';
 
 // inside an async context
 Image image = await Flame.images.load('player.png');
@@ -314,7 +315,7 @@ You can see a full example of the SpriteSheet class [here](https://github.com/fl
 Sprite sheets are big images with several frames of the same sprite on it and is a very good way to organize and keep your animations stored. Flame provides a very simple utility class to deal with SpriteSheets, with it you can load your sprite sheet image and extract animations from it. Below is a very simple example of how to use it:
 
 ```dart
-import 'package:flame/spritesheet.dart';
+import 'package:flame/sprite.dart';
 
 final spritesheet = SpriteSheet(
   image: imageInstance,

lib/sprite.dart

@@ -0,0 +1,4 @@
+export 'src/sprite.dart';
+export 'src/sprite_animation.dart';
+export 'src/sprite_batch.dart';
+export 'src/spritesheet.dart';

lib/sprite_batch.dart

@@ -1 +0,0 @@
-export 'src/sprite_batch.dart';

lib/spritesheet.dart

@@ -1 +0,0 @@
-export 'src/spritesheet.dart';