June 2015
Beginner
354 pages
8h 23m
English
Content preview from HTML5 Game Development by Example(Second Edition)Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Time for action – connecting the box and two circles with a revolute joint
Carry out the following steps to create a car with the box and wheels:
- We are still working only on the logic part. Open our JavaScript logic file in a text editor.
- Create a function named
createCarAt, which takes the coordinates as arguments. Then, move the body and the wheel creation code in this function. Afterwards, add the following highlighted joint creation code. At last, return the car body:function createCarAt(x, y) { var bodyDef = new b2BodyDef; var fixDef = new b2FixtureDef; // car body bodyDef.type = b2Body.b2_dynamicBody; bodyDef.position.x = 50/pxPerMeter; bodyDef.position.y = 210/pxPerMeter; fixDef.shape = new b2PolygonShape(); fixDef.density = 1.0; fixDef.friction ...
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