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  • Building Android Games with Cocos2d-x
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Building Android Games with Cocos2d-x

Building Android Games with Cocos2d-x

By : Hernandez
4.3 (8)
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Building Android Games with Cocos2d-x

Building Android Games with Cocos2d-x

4.3 (8)
By: Hernandez

Overview of this book

If you have a basic understanding of the C++ programming language and want to create videogames for the Android platform, then this technology and book is ideal for you.
Table of Contents (10 chapters)
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Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Setting Up Your Development Environment
1. Setting Up Your Development Environment
Cocos2d-x overview
Setting up Java
Setting up the Android SDK
Setting up the Android Native Development Kit
Setting up Apache Ant
Setting up Python
Setting up Cocos2d-x
Template code walk-through
Summary
2
2. Graphics
2. Graphics
Creating scenes
Pausing the game
Understanding nodes
Understanding sprites
Understanding actions
Animating sprites
Game menus
Putting everything together
Summary
3
3. Understanding Game Physics
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3. Understanding Game Physics
Setting up the physics world
Collision detection
Handling gravity
Putting everything together
Summary
4
4. User Input
4. User Input
Understanding the Event Dispatcher mechanism
Handling the touch event
Handling accelerometer events
Keeping the screen alive
Handling the Android back key pressed event
Putting everything together
Summary
5
5. Handling Text and Fonts
5. Handling Text and Fonts
Creating TrueType font labels
Creating system fonts
Creating bitmap font labels
Putting everything together
Summary
6
6. Audio
6. Audio
Playing background music and sound effects
Modifying audio properties
The new audio engine
Adding a mute button to our game
Putting everything together
Summary
7
7. Creating Particle Systems
7. Creating Particle Systems
Creating collections of the Cocos2d-x objects
Adding particle systems to our game
Configuring the particle systems
Creating customized particle systems
Putting everything together
Summary
8
8. Adding Native Java Code
8. Adding Native Java Code
Understanding the Cocos2d-x structure for the Android platform
Understanding the JNI capabilities
Adding Java code to the Cocos2d-x game
Adding ads to the game by inserting Java code
Configuring the environment
Modifying the Android manifest
Putting everything together
Summary
9
Index
Index

Handling gravity

Now that we have successfully used the built-in physics engine to detect the collision, let us play a little bit with gravity. Go to the createScene method and modify the parameters that we have sent to the constructor. In our game, we have used the (0,0) value, since we did not want our world to have any gravity force that moves our bodies on either the x or the y axis.

Now, give it a try, change the values to positive or negative. When we use a negative value on the x axis, it will attract the body toward the left, and when we use the negative value on the y axis, it will attract the body toward the bottom.

Note

Changing these values and understanding the physics added to our game might give you some ideas for your next games.

Handling physics properties

Now that we have created our scene, which corresponds to the physics world, we now have the ability to change the physics properties, such as the velocity, linear damping, force, impulse, and torque for each body.

Applying...

End of Section 4
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