April 2018
Beginner
476 pages
14h 4m
English
Content preview from Practical Game Design
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Touch screen controls
Some modern touchscreens are capable of tracking as many as 10 individual points of contact. Nevertheless, a simple set of single-finger taps and swipes can usually get you a long way. It's recommended to not rely on more than 4 fingertips as going above that number increases the chances of misinterpreting the input and reduces the number of compatible devices. A touch interface can provide you with:
- A unique ID for each contact point.
- The origin of contact (starting position).
- Current position.
- Change in position and time since last update (used to track movement).
- Status since the last frame (touch started, moved, stationary, released and canceled):
- Cancellation can happen if more than 5 inputs are detected simultaneously ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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