Book Image

Kotlin Programming By Example

By : Iyanu Adelekan
Book Image

Kotlin Programming By Example

By: Iyanu Adelekan

Overview of this book

Kotlin greatly reduces the verbosity of source code. With Google having announced their support for Kotlin as a first-class language for writing Android apps, now's the time learn how to create apps from scratch with Kotlin Kotlin Programming By Example takes you through the building blocks of Kotlin, such as functions and classes. You’ll explore various features of Kotlin by building three applications of varying complexity. For a quick start to Android development, we look at building a classic game, Tetris, and elaborate on object-oriented programming in Kotlin. Our next application will be a messenger app, a level up in terms of complexity. Before moving onto the third app, we take a look at data persistent methods, helping us learn about the storage and retrieval of useful applications. Our final app is a place reviewer: a web application that will make use of the Google Maps API and Place Picker. By the end of this book, you will have gained experience of of creating and deploying Android applications using Kotlin.
Table of Contents (12 chapters)

Implementing the Tetris gameplay

As we are concerned with implementing gameplay, the activity that we will focus on developing further in this chapter is GameActivity. The following screenshot shows the final product of all the development done in this chapter:

Now that we have an idea of what the final game is going to look like, let's get going with its development.

Under the section Understanding Tetris in Chapter 2, Building an Android Application – Tetris we got to understand that Tetris is a puzzle-matching game that makes use of tiles. These tiles combine to form bigger shapes called tetrominoes. As a reminder, a tetromino is a geometric shape composed of four squares connected orthogonally.

Modeling a tetromino

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