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HTML5 Game Development Hotshot

You're reading from   HTML5 Game Development Hotshot Build interactive games with HTML, DOM, and the CreateJS Game library.

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Product type Paperback
Published in Jul 2014
Publisher
ISBN-13 9781849695466
Length 366 pages
Edition 1st Edition
Languages
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Authors (2):
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Makzan Makzan (Mak Seng Hin) Makzan Makzan (Mak Seng Hin)
Author Profile Icon Makzan Makzan (Mak Seng Hin)
Makzan Makzan (Mak Seng Hin)
Seng Hin Mak Seng Hin Mak
Author Profile Icon Seng Hin Mak
Seng Hin Mak
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Toc

Table of Contents (10) Chapters Close

Preface 1. Building a CSS Quest Game FREE CHAPTER 2. Card Battle! 3. Space Runner 4. Multiply Defense 5. Building an Isometric City Game 6. Space Defenders 7. A Ball-shooting Machine with Physics Engine 8. Creating a Sushi Shop Game with Device Scaling Index

Defining levels


In this task, we define multiple levels that contain different combinations of obstacles.

Prepare for lift off

We have successfully put bodies in the physics world in the previous tasks. In this task, we would like to extract the body placement into an easier definition, so that we can massively define a series of levels.

In these levels, we define the position of the hoop and ball. We also define how obstacles are placed in each level.

We define the levels in a new file called level.js. Let's include it in HTML:

<script src="scripts/level.js"></script>

Engage thrusters

We will now work on the newly created level.js file:

  1. In the level.js file, we define the balls and levels data. Most of the data defines the physics properties:

    game.balls = {
      'slow ball': {
        className: 'SlowBall',
        radius: 13,
        density: 0.6,
        friction: 0.8,
        restitution: 0.1
      },
      'bouncy ball': {
        className: 'BouncyBall',
        radius: 10,
        density: 1.1,
        friction: 0.8,
        restitution...
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