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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

Shooting the ball


In this task, we create a hoop and allow the player to throw the ball by clicking the mouse button. The ball may or may not pass through the hoop based on the throwing angle and power.

Prepare for lift off

We remove the two bodies that were created in the first task. Those two bodies were just an experiment and we don't need them anymore.

Engage thrusters

In the following steps, we will create the core part of this project—shooting the ball:

  1. We will create a hoop and spawn a ball in the physics world. We create a function for these two tasks:

    physics.createLevel = function() {
      this.createHoop();
    
      // the first ball
      this.spawnBall();
    };
  2. We are going to spawn many balls. We define the following method for this task. In this task, we hardcode the position, ball size, and fixture properties. The ball is spawned as a static object until the player throws the ball out:

    physics.spawnBall = function() {
      var positionX = 300;
      var positionY = 200;
      var radius = 13;
    
      var bodyDef...
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