FSOSS 2010/processing.js/

Welcome to the Game Development Using Processing.js Workshop!

Intro (me)

• Seneca college BSD student
• Research assistant in CDOT
• Related projects: C3DL and XB PointStream
• Wordpress, Twitter

Goals & Schedule

• Develop a simple 2D or 3D game using in Processing
• 9-11 Examples and exercises
• 11-12 Work, experiment, collaborate

Processing (aka P5)

• Processing.org
• Open source data visualization language
• Developed in Java
• "Sketches" written using Java syntax
• Requires a JVM plug-in
• Uses the <object> tag
• Reference
• Bug tracking

Setting up Processing

• Download it here
• Save the .DMG file to the Desktop
• Double-click to extract file
• Drag the Processing icon to the desktop
• Double-click the icon to start

Processing.js (aka PJS)

• ProcessingJS.org
• Open source JavaScript port of Processing
• Started by John Resig
• Many contributions by Seneca
• Bug Tracking
• Does not require a plug-in
• Uses the <canvas> tag
• Lots of IDEs Processing.js IDE, HasCanvas, SketchPad, Sketch.Processing.org, My IDE

Setting up Minefield

• Why use it?
• Much faster than Firefox
• Has WebGL
• Download a working version of Minefield here
• Instructions to enabled WebGL here

Setting up Processing.js

• 3 Files Required
• Processing.js file
• Sketch file
• HTML file

Examples & Exercises

Basics

size, background, rect Example

setup Example

draw, noStroke, ellipse, fill, mousePressed Example

line, stroke, strokeWeight Example

ArrayList Example

Input

mousePressed, mouseReleased, println, debugging with P5 Example

keyPressed, keyCode, keyReleased Example

Text & Random

text, random Example

Exercise

Animation Timing

Timing Example

Vectors & Transfomations

Vectors

Vector Exercise

Particle System Example

Exercise! Modify the Particle System

transforms

3D

box Example

sphere, sphereDetail Example

Vertex, Texture Example

Debugging

println Example

Checking in P5

Error console

DOM Manipulation/Library Integration

DOM Interaction Example

Integration with jQueryUI - Example

Audio Example, Audio Data API Demos

Physics using Box2DJS - Al MacDonald's Demo, 0.1 PJS Crayon Physics

More demos! My PJS Web IDE (Visualizations, Spatial hierarchies, Image manipulation, Particle Systems!)

Sample Games

Here are some Processing.js games and prototypes to give you an idea what is possible
3D Pong by bmidgley
Tower Defense by Will Larson and Peter Burns
Core by Andor Salga
Light Cycles by Al MacDonald
Game of Life by Al MacDonald
JS Ninja by Al MacDonald
Zelda by Scott Downe

Challenges

Create an empty sketch and try to code a simple game:
Pong!
Concentration
Flying side-scroller
Sokoban

Gotchas

• Integer/Integer division println(5/2) v.s. println(5/2.0)
• NPOT (Non Power of Two) textures will not load in 3D
• color does not use new