38 lines
869 B
Dart
38 lines
869 B
Dart
import 'dart:html';
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import 'package:browserloop/game/Game.dart';
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import 'package:browserloop/game/LoopExample.dart';
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/// The Variable Timestep Loop.
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///
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/// Perhaps one of the most widely used loops
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/// in games for many years. Many game frameworks
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/// make use of a loop similar to this.
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class VariableTimestep implements LoopExample {
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Game game;
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num id;
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Stopwatch elapsed = new Stopwatch();
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VariableTimestep(Game this.game);
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void eventloop(num time) {
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int dt = elapsed.elapsedMilliseconds;
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game.update(dt);
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game.draw();
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elapsed.reset();
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id = window.requestAnimationFrame(eventloop);
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}
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// Starting and stopping the loop for the example page
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void stop() {
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elapsed.stop();
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window.cancelAnimationFrame(id);
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}
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void start() {
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elapsed.start();
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elapsed.reset();
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window.requestAnimationFrame(eventloop);
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}
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}
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