demo.js

function debug(){
    paused = true;
    grid = [
        [ 0, 0, 0, 0, 0, 0, 0, 0],
        [ 0, 0, 1, 1, 1, 1, 0, 0],
        [ 0, 2, 2, 2, 2, 2, 0, 0],
        [ 0, 3, 3, 0, 0, 0, 0, 0],
        [ 0, 4, 4, 0, 0, 0, 0, 0],
        [ 0, 5, 5, 0, 0, 0, 0, 0],
        [ 0, 0, 6, 6, 6, 6, 0, 0],
        [ 0, 0, 0, 7, 7, 7, 0, 0],
        [ 0, 0, 0, 0, 0, 0, 0, 0],
        [ 0, 1, 1, 1, 1, 0, 0, 0],
        [ 0, 2, 2, 0, 2, 2, 0, 0],
        [ 0, 3, 0, 0, 3, 3, 0, 0],
        [ 0, 5, 5, 5, 5, 0, 0, 0],
        [ 0, 6, 6, 0, 0, 0, 0, 0],
        [ 0, 7, 7, 0, 0, 0, 0, 0],
        [ 0, 1, 1, 0, 0, 0, 0, 0],
    ];
    grid = [
        [ 0, 0, 0, 0, 0, 0, 0, 0],
        [ 0, 0, 2, 3, 4, 5, 0, 0],
        [ 0, 1, 2, 3, 4, 5, 0, 0],
        [ 0, 1, 2, 0, 0, 0, 0, 0],
        [ 0, 1, 2, 0, 0, 0, 0, 0],
        [ 0, 1, 2, 0, 0, 0, 0, 0],
        [ 0, 0, 2, 3, 4, 5, 0, 0],
        [ 0, 0, 0, 3, 4, 5, 0, 0],
        [ 0, 0, 0, 0, 0, 0, 0, 0],
        [ 0, 1, 2, 3, 4, 0, 0, 0],
        [ 0, 1, 2, 0, 4, 5, 0, 0],
        [ 0, 1, 0, 0, 4, 5, 0, 0],
        [ 0, 1, 2, 3, 4, 0, 0, 0],
        [ 0, 1, 2, 0, 0, 0, 0, 0],
        [ 0, 1, 2, 0, 0, 0, 0, 0],
        [ 0, 1, 2, 0, 0, 0, 0, 0],
    ];
    for (let r = 0; r < rows; r++) {
        grid.push([]);
        for (let c = 0; c < columns; c++) {
            grid[r][c] = ((r + c)%7 + 1);
        }
    }
    current.y = -50;

}
// debug()