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tetrominos.js
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const TETROMINOS = [
//O
{
shape: [
[1, 1],
[1, 1],
],
position: {row: 0, col: 2},
nextPosition: {row: 1, col: 2},
},
//J
{
shape: [
[0, 1],
[0, 1],
[1, 1],
],
rotations: [
[[0,1],
[0,1],
[1,1]],
[[1,0,0],
[1,1,1]],
[[1,1],
[1,0],
[1,0]],
[[1,1,1],
[0,0,1]]
],
position: {row: 0, col: 2},
nextPosition: {row: 1, col: 2},
},
//I
{
shape: [
[0, 1, 0, 0],
[0, 1, 0, 0],
[0, 1, 0, 0],
[0, 1, 0, 0]
],
rotations: [
[[0, 0, 0, 0],
[1, 1, 1, 1],
[0, 0, 0, 0],
[0, 0, 0, 0]],
[[0, 1, 0, 0],
[0, 1, 0, 0],
[0, 1, 0, 0],
[0, 1, 0, 0]]
],
position: {row: 0, col: 2},
nextPosition: {row: 1, col: 2},
},
//T
{
shape: [
[1, 1, 1],
[0, 1, 0],
[0, 0, 0],
],
rotations: [
[[0, 1, 0],
[1, 1, 1],
[0, 0, 0]],
[[0, 1, 0],
[0, 1, 1],
[0, 1, 0]],
[[0, 1, 0],
[1, 1, 0],
[0, 1, 0]],
[[1, 1, 1],
[0, 1, 0],
[0, 0, 0]],
],
position: {row: 0, col: 2},
nextPosition: {row: 1, col: 2},
},
//S
{
shape: [
[1, 0, 0],
[1, 1, 0],
[0, 1, 0],
],
rotations: [
[[1, 1, 0],
[0, 1, 1],
[0, 0, 0]],
[[1, 0, 0],
[1, 1, 0],
[0, 1, 0]],
],
position: {row: 0, col: 2},
nextPosition: {row: 1, col: 2},
},
]
function getTetromino() {
return JSON.parse(JSON.stringify(TETROMINOS[Math.floor(Math.random() * TETROMINOS.length)]));
}