flutter/flame
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This commit is contained in:
Erick Zanardo
2020-05-25 12:20:58 -03:00
parent cee26870db
commit eb702ae07c
3 changed files with 31 additions and 33 deletions
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31
doc/examples/widgets/lib/main.dart
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@ -87,24 +87,23 @@ void main() async {
rows: 1, rows: 1,
); );
final _animation = _animationSpriteSheet.createAnimation( final _animation = _animationSpriteSheet.createAnimation(
0, 0,
stepTime: 0.2, stepTime: 0.2,
to: 3, to: 3,
loop: true, loop: true,
); );
dashbook.storiesOf('FlameAnimationWidget').decorator(CenterDecorator()) dashbook.storiesOf('FlameAnimationWidget').decorator(CenterDecorator()).add(
.add( 'default',
'default', (ctx) => Container(
(ctx) => Container( width: ctx.numberProperty('container width', 400),
width: ctx.numberProperty('container width', 400), height: ctx.numberProperty('container height', 200),
height: ctx.numberProperty('container height', 200), padding: const EdgeInsets.all(20),
padding: const EdgeInsets.all(20), child: FlameAnimationWidget(
child: FlameAnimationWidget( animation: _animation,
animation: _animation, play: ctx.boolProperty('playing', true),
play: ctx.boolProperty('playing', true), center: ctx.boolProperty('center', true),
center: ctx.boolProperty('center', true),
),
), ),
),
); );
runApp(dashbook); runApp(dashbook);

30
lib/widgets/flame_animation_widget.dart
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@ -14,14 +14,14 @@ class FlameAnimationWidget extends StatefulWidget {
this.animation, this.animation,
this.play = true, this.play = true,
this.center = false, this.center = false,
}): assert(animation.loaded(), 'Animation must be loaded'); }) : assert(animation.loaded(), 'Animation must be loaded');
@override @override
State createState() => _FlameAnimationWidget(); State createState() => _FlameAnimationWidget();
} }
class _FlameAnimationWidget extends State<FlameAnimationWidget> with SingleTickerProviderStateMixin { class _FlameAnimationWidget extends State<FlameAnimationWidget>
with SingleTickerProviderStateMixin {
AnimationController _controller; AnimationController _controller;
int _lastUpdated; int _lastUpdated;
@ -39,19 +39,17 @@ class _FlameAnimationWidget extends State<FlameAnimationWidget> with SingleTicke
void initState() { void initState() {
super.initState(); super.initState();
_controller = AnimationController( _controller = AnimationController(vsync: this)
vsync: this ..addListener(() {
) final now = DateTime.now().millisecond;
..addListener(() {
final now = DateTime.now().millisecond;
final dt = max(0, (now - _lastUpdated) / 1000); final dt = max(0, (now - _lastUpdated) / 1000);
widget.animation.update(dt); widget.animation.update(dt);
setState(() { setState(() {
_lastUpdated = now; _lastUpdated = now;
});
}); });
});
widget.animation.onCompleteAnimation = _pauseAnimation; widget.animation.onCompleteAnimation = _pauseAnimation;
@ -66,8 +64,7 @@ class _FlameAnimationWidget extends State<FlameAnimationWidget> with SingleTicke
_lastUpdated = DateTime.now().millisecond; _lastUpdated = DateTime.now().millisecond;
_controller.repeat( _controller.repeat(
// -/+ 60 fps // -/+ 60 fps
period: Duration(milliseconds: 16) period: Duration(milliseconds: 16));
);
}); });
} }
@ -85,6 +82,7 @@ class _FlameAnimationWidget extends State<FlameAnimationWidget> with SingleTicke
@override @override
Widget build(ctx) { Widget build(ctx) {
return FlameSpriteWidget(sprite: widget.animation.getSprite(), center: widget.center); return FlameSpriteWidget(
sprite: widget.animation.getSprite(), center: widget.center);
} }
} }

3
lib/widgets/flame_sprite_widget.dart
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@ -28,7 +28,8 @@ class _FlameSpritePainer extends CustomPainter {
_FlameSpritePainer(this._sprite, this._center); _FlameSpritePainer(this._sprite, this._center);
@override @override
bool shouldRepaint(_FlameSpritePainer old) => old._sprite != _sprite || old._center != _center; bool shouldRepaint(_FlameSpritePainer old) =>
old._sprite != _sprite || old._center != _center;
@override @override
void paint(Canvas canvas, Size size) { void paint(Canvas canvas, Size size) {