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tetr - a JavaScript library for building Tetris games

Tetr is a library that implements the model and controller part of a Tetris game. It also includes various complete examples for the view part which you can use unchanged or build off of.

Examples

These examples can be found in the dist/examples directory. The examples include:

(click on the links above or the screenshots to play)

text-based Tetris from 1984 Tetris UI built with React 3D Tetris UI

How to use

The easiest way to get started is to start editing one of the examples that come with this project.

If you want to start building from scratch, here's an overview by example of the data model and controller:

// create a new game
var game = new TetrisGame({width: 10, height: 20});

// on creation there will be a new random shape at the top
// it has a center of rotation and consists of 4 blocks
game.currentShape
-> {center: [5, 1], blocks: [...]}

var firstBlock = game.currentShape.blocks[0]
-> {position: [4, 0], color: '#3f51b5'}

game.score
-> 0

game.level
-> 0

// advance the game by one step; the current shape moves down
game.tick();
game.currentShape.center
-> [5, 2]
// access the first block
game.currentShape.blocks[0]
-> {position: [4, 1], color: '#3f51b5'}

// move the current shape to the right (if possible)
game.moveCurrentShape('r');

// rotate the current shape (clockwise)
game.rotateCurrentShape();

// move the current shape down
game.moveCurrentShape('d');

// advance the game by some more steps:
game.tick();
...
game.tick();
// calling game.tick() will automatically clear full rows

// by now there are some blocks at the bottom of the field
game.existingBlocks
-> [Block(), Block(), Block(), ...]

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A tool for creating in-browser Tetris games

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