Time for action – alternative control using a gyroscope

It will be even more fun to control our hunter using a gyroscope.

Note

A Gyroscope is a device that measures an iPhone's orientation. Using a gyroscope, you can tell how your iPhone is positioned in the world. This way, if you track the gyroscope information, you can track when the user tilts or rotates a device in hands. A gyroscope is often used in racing games, where you can use your iPhone as a steering wheel. We'll use it to control the hunter's aim.

Unfortunately, only happy owners of the iOS devices and participants of the Apple iOS Developer Program can test the code in this part of the chapter, as you cannot test a gyroscope on the simulator.

Note

You can still follow this chapter to learn information on how to use the gyroscope. If you decide to skip this chapter, take the final project for this chapter from the Chapter_05/Cocohunt_05_Final folder as a starter project for the next chapter as we're going to build on it.

To get information...