Tutorial: Allowing Jump, Sticky Projectiles, Wind Tunnels

Today’s tutorial introduces a few new physics methods for your bag of tricks. We’ll solve the “Can I jump?” issue for 2D side-view games, and also discuss how to handle “sticky projectiles” and basic “wind tunnel” behavior. Three sample projects are available for download in order to study each case.

Using Email Attachments (iOS)

Would you like to open an email attachment with your own custom extension directly in your iOS app? Today’s guest tutorial walks you through the essential steps, including the necessary additions to “build.settings” and the functions required to load an email attachment into your app’s local directory. Read further to learn how!

Tutorial: Basic Shape-Matching App

Educational and children’s apps continue to grow in popularity, as do casual puzzle games on various devices, especially with the new wave of family-oriented tablets. Today’s tutorial walks you through a basic multitouch shape-matching app and it includes the complete project code which you can implement into your own project.

Tutorial: Implementing Pinch-Zoom-Rotate

Many apps have a huge feature set but still function primarily with a single point of input: buttons, touch-drags, individual swipe actions, etc. However, even the most basic interface can benefit from the multitouch capabilities of modern devices; for example, zoom in and out on a background, scale/rotate objects and layers, etc. Today’s tutorial walks you through a full “pinch-zoom-rotate” methodology and includes a working module that you can incorporate into your own app.

Tutorial: Utilizing Time and Dates

Working with “time” in any programming language can be confusing to programmers. Furthermore, it’s not always obvious what the time and date functions mean and how they behave. This week’s tutorial discusses some of these issues and shows you how to work with things like date calculations, time zones, and date formatting.