CopperLicht 入门（二）运动与键盘输入
【专业web 3d、webGL、flash 3d程序开发：北京贝武易科技公司】
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本课程是学习通过键盘移动物体，效果如下图：
在上一个课程的基础上，我们掌握了在CopperCube里，如何建立基本的场景和物体。
在CopperCube中，建立一个平面、箱体、球体，保证箱体名为'cubeMesh1'，球体名为'sphereMesh1'，建立好的场景如下：
编写CopperLicht代码
像上一节教材那样，输出一个.ccbjs文件到CopperLicht，保存Coppercube文件，发布场景为WebGL：Tools -> Test as JavaScript/WebGL，用网页编辑器打开新生成的.html文件，代码如下：
<html><head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <script type="text/javascript" src="copperlichtdata/copperlicht.js"></script></head><body> <div align="center"> <canvas id="3darea" width="640" height="480" style="background-color:#000000"> </canvas> </div> <script type="text/javascript"> <!-- startCopperLichtFromFile('3darea', 'copperlichtdata/tutorial-2.ccbjs'); --> </script></body></html><script type="text/javascript"> <!-- var engine = startCopperLichtFromFile('3darea', 'copperlichtdata/tutorial-2.ccbjs'); var cubeSceneNode = null; // this is called when loading the 3d scene has finished engine.OnLoadingComplete = function() { var scene = engine.getScene(); if (scene) { // find the cube scene node cubeSceneNode = scene.getSceneNodeFromName('cubeMesh1'); // also, force the 3d engine to update the scene every frame scene.setRedrawMode(CL3D.Scene.REDRAW_EVERY_FRAME); // additional, let the sphere constantly rotate var sphereSceneNode = scene.getSceneNodeFromName('sphereMesh1'); if (sphereSceneNode) sphereSceneNode.addAnimator(new CL3D.AnimatorRotation(new CL3D.Vect3d(0, 1.6, 0.8))); } } document.onkeydown = function(event) { var key = String.fromCharCode(event.keyCode); // when pressed 'L', move the cube scene node a bit up if (key == 'F' && cubeSceneNode) cubeSceneNode.Pos.Y += 5; // when pressed 'G', move the cube scene node a bit down if (key == 'G' && cubeSceneNode) cubeSceneNode.Pos.Y -= 5; // we need to call the key handler of the 3d engine as well, so that the user is // able to move the camera using the keys engine.handleKeyDown(event); }; --> </script>var engine = startCopperLichtFromFile('3darea', 'copperlichtdata/tutorial-2.ccbjs');// this is called when loading the 3d scene has finished engine.OnLoadingComplete = function() { var scene = engine.getScene();if (scene){ // find the cube scene node cubeSceneNode = scene.getSceneNodeFromName('cubeMesh1');// also, force the 3d engine to update the scene every framescene.setRedrawMode(Scene.REDRAW_EVERY_FRAME);
// additional, let the sphere constantly rotatevar sphereSceneNode = scene.getSceneNodeFromName('sphereMesh1');if (sphereSceneNode) sphereSceneNode.addAnimator(new AnimatorRotation(new Vect3d(0, 1.6, 0.8)));document.onkeydown = function(event){// we need to call the key handler of the 3d engine as well, so that the user is// able to move the camera using the keysengine.handleKeyDown(event);
var key = String.fromCharCode(event.keyCode); // when pressed 'L', move the cube scene node a bit upif (key == 'F' && cubeSceneNode) cubeSceneNode.Pos.Y += 5; // when pressed 'G', move the cube scene node a bit downif (key == 'G' && cubeSceneNode) cubeSceneNode.Pos.Y -= 5;