Kotlin Programming By Example

Understanding Tetris

Before attempting to develop the Tetris game as an Android application, we need to understand the game, its rules, and its constraints.

Tetris is a matching puzzle video game that makes use of tiles. The name Tetris is derived from the words tetra – the Greek numerical prefix for four – and tennis. The tiles in Tetris combine to make up tetrominoes which are geometric shapes composed of four squares connected orthogonally:

Tetris tetrominoes

In Tetris, a random sequence of tetrominoes fall down upon a playing field. These tetrominoes can be manipulated by the player. A number of motions can be performed on each tetromino ...