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improve mixins & adds HasGameRef & fixes composedComponent

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This commit is contained in:
Luan Nico
2019-09-21 12:59:32 -04:00
parent 42397bbcc8
commit e2622cde41
13 changed files with 208 additions and 46 deletions
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44
lib/components/composed_component.dart
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@ -1,11 +1,16 @@
import 'dart:ui';
import 'package:flame/components/component.dart';
import 'package:flame/components/resizable.dart';
import 'package:flame/components/mixins/has_game_ref.dart';
import 'package:flame/components/mixins/tapeable.dart';
import 'package:flame/game.dart';
import 'package:ordered_set/comparing.dart';
import 'package:ordered_set/ordered_set.dart';
/// A mixin that helps you to make a `Component` wraps other components. It is useful to group visual components through a hierarchy. When implemented, makes every item in its `components` collection field be updated and rendered with the same conditions.
import 'component.dart';
import 'mixins/resizable.dart';
/// A mixin that helps you to make a `Component` wraps other components. It is useful to group visual components through a hierarchy.
/// When implemented, makes every item in its `components` collection field be updated and rendered with the same conditions.
///
/// Example of usage, where visibility of two components are handled by a wrapper:
///
@ -32,7 +37,7 @@ import 'package:ordered_set/ordered_set.dart';
/// }
/// ```
///
mixin ComposedComponent on Component {
mixin ComposedComponent on Component, HasGameRef, Tapeable {
OrderedSet<Component> components =
OrderedSet(Comparing.on((c) => c.priority()));
@ -56,17 +61,28 @@ mixin ComposedComponent on Component {
}
void add(Component c) {
components.add(c);
if (this is Resizable) {
// first time resize
final Resizable thisResizable = this as Resizable;
if (thisResizable.size != null) {
c.resize(thisResizable.size);
}
if (gameRef is BaseGame) {
(gameRef as BaseGame).preAdd(c);
}
components.add(c);
}
List<Resizable> children() =>
components.where((r) => r is Resizable).cast<Resizable>().toList();
// this is an important override for the Tapeable mixin
@override
Iterable<Tapeable> tapeableChildren() => _findT<Tapeable>();
// this is an important override for the Resizable mixin
Iterable<Resizable> resizableChildren() => _findT<Resizable>();
// Finds all children of type T, recursively
Iterable<T> _findT<T>() => components.expand((c) {
final List<T> r = [];
if (c is T) {
r.add(c as T);
}
if (c is ComposedComponent) {
r.addAll(c._findT<T>());
}
return r;
}).cast();
}