mirror of
https://github.com/Viglino/ol-games.git
synced 2026-01-18 15:17:17 +00:00
131 lines
4.1 KiB
HTML
131 lines
4.1 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<!--
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Copyright (c) 2016 Jean-Marc VIGLINO,
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released under CeCILL-B (french BSD like) licence: http://www.cecill.info/
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-->
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<title>ol-games: Game loop</title>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="description" content="Game control to show frame rate with ol-games" />
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<meta name="keywords" content="ol, game, gameloop, frame, framerate" />
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<link rel="stylesheet" href="style.css" />
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<!-- jQuery -->
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<script type="text/javascript" src="https://code.jquery.com/jquery-1.11.0.min.js"></script>
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<!-- FontAwesome -->
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
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<!-- OpenLayers -->
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/ol@latest/ol.css" />
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<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ol@latest/dist/ol.js"></script>
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<!-- ol-ext -->
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<link rel="stylesheet" href="https://rawgit.com/Viglino/ol-ext/master/dist/ol-ext.css" />
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<script type="text/javascript" src="https://rawgit.com/Viglino/ol-ext/master/dist/ol-ext.js"></script>
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<!-- ol-games -->
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<link rel="stylesheet" href="../dist/ol-games.css" />
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<script type="text/javascript" src="../dist/ol-games.js"></script>
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<style>
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#map {
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width:800px;
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height:600px;
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float: left;
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}
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.ol-control.ol-framerate {
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top:0.5em;
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left: 0.5em;
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}
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</style>
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</head>
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<body >
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<a href="https://github.com/Viglino/ol-games" class="icss-github-corner"><i></i></a>
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<a href="../index.html">
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<h1>ol-games: Game loop</h1>
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</a>
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<div class="info">
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<p>
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<i>ol.control.FrameRat</i> add a control to show graphically the framerate.
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</p>
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</div>
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<!-- Map div -->
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<div id="map"></div>
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<div class="options" >
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<h2>Options:</h2>
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Speed: <input type="range" min="0.1" max="0.5" step="0.01" value="0.2" onchange="speed = parseFloat(this.value)" />
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<br/>
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Click on the map to change flying direction.
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</div>
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<script type="text/javascript">
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// Layers
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var layer = new ol.layer.Tile({ preload:Infinity, source: new ol.source.StadiaMaps({ layer: 'stamen_watercolor' }) });
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// Overlay to add features on it
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var overlay = new ol.layer.Vector({ source: new ol.source.Vector() });
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// Angle, position and speed of the plane
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var a = 0;
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var center = [260064, 6250762];
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var speed = 0.2;
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// Add a plane to the overlay
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var plane = new ol.Feature(new ol.geom.Point(center));
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plane.setStyle ( new ol.style.Style({ image: new ol.style.Icon({ src: "img/Biploar_type4_1.png", scale:0.45 }), zIndex:1 }) );
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var shadow = new ol.Feature(new ol.geom.Point(center));
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shadow.setStyle ( new ol.style.Style({ image: new ol.style.Icon({ src: "img/Biploar_shadow.png", scale:0.3, opacity:0.4 }), zIndex:0 }) );
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overlay.getSource().addFeatures([plane, shadow]);
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// Calculate a new direction
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function getDirection(pt) {
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if (pt) a = Math.atan2 ( pt[0]-center[0], pt[1]-center[1] ) - Math.PI/2;
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else a = Math.random()*2*Math.PI;
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plane.getStyle().getImage().setRotation(a + Math.PI/2);
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shadow.getStyle().getImage().setRotation(a + Math.PI/2);
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}
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// New Game
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var game = new ol.Game({
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target: 'map',
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zoom: 16,
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center: center,
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layers: [layer, overlay],
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});
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getDirection();
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// Add frame rate control
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game.addControl(new ol.control.FrameRate());
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// Click on the map => calculate a new direction
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game.getMap().on("click", function(e){
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getDirection(e.coordinate);
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})
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// Game loop
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game.on ("render", function(e) {
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center[0] += speed * e.dt * Math.cos(a);
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center[1] -= speed * e.dt * Math.sin(a);
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game.getView().setCenter(center);
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plane.getGeometry().setCoordinates(center);
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shadow.getGeometry().setCoordinates([center[0]+60, center[1]-80]);
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});
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// start game!
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game.start();
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</script>
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</body>
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</html> |