Mobile game developers can understand the different touch gestures like swipe, pinch and flick used for RTS games
Detecting and Using Touch Gestures in Unity
Taps, swipes, pinches, and flicks are all ways that players can interact with mobile games. Unity 3D games built for mobile devices should take these unique ways of playing that go beyond the standard "controller."

Making sense of raw finger position vectors every frame might prove to be more involved than it looks. In this course, you’ll be introduced to the concept of touch input processing in Unity games.

Each lecture will introduce the theory commonly used finger gestures, such as taps, drags, swipes, pinches, and rotates. The goal of the course will be to put that theory into practice to create a simple point-and-click game.

The characteristics of each gesture will be explained, and the relevant code to detect and use it in the example game will be shown step-by-step.

By the end of the course, you’ll have built a script that can process touch input and report what gesture has happened or is happening, and this script will be modular: ready to use in any of your other projects.

Before starting this course, you should be familiar with C# programming in Unity and the concept of 3D transforms as it is used in the engine. A touch of basic trigonometry also wouldn’t hurt.