let ghostMode = false;

​

const width = 10;

const height = 20;

​

​

const piecesOrder= ['O', 'S', 'J', 'L', 'J', 'I', 'T', 'L', 'I', 'J', 'Z', 'S', 'I', 'L', 'O', 'T', 'L', 'Z', 'I', 'S', 'J', 'O', 'T',  'Z','I', 'O', 'L', 'I', 'T', 'L', 'S', 'Z' ]

var currIndex=0;  

​

function setup() {

    playfield = new Playfield(width, height);

    let totalWidth = playfield.cellSize * width + playfield.borderSize*2;

    let totalHeight = playfield.cellSize * height + playfield.borderSize*2;

​

    createCanvas(totalWidth, totalHeight);

​

    spawnNewPiece();

}

​

​

let prev = 0;

function draw() {

    //============================

    // Get time passed since last frame

    //============================

    let curr = millis();

    let delta = curr - prev;

    prev = curr;

​

    //============================

    // Update

    //============================

    if (!paused)

        fallingPiece.update(delta);

    // move down piece and spawn a new one

    // if necessary

    if (fallingPiece.timeToFall()) {

        fallingPiece.resetBuffer();

        fallingPiece.moveDown();

        if (!playfield.isValid(fallingPiece)) {

            fallingPiece.moveUp();

            spawnNewPiece();

        }

    }

​

    // copy falligPiece's location and

    // orientation, then hardDrop() it

    // if ghostMode is on

​

    ghostPiece.copy(fallingPiece)

    hardDrop(ghostPiece, playfield);

​

    playfield.clearLines();

    //============================

    // Draw

    //============================

    background('#000000');

    playfield.show();

    if (ghostMode) ghostPiece.show();

    fallingPiece.show();

}

​

​

function spawnNewPiece() {

    if (fallingPiece) {

        playfield.addToGrid(fallingPiece);

    }

    //const pieces = ['O', 'J', 'L', 'S', 'Z', 'T', 'I']

    //const choice = random(pieces);    

    const choice = piecesOrder[currIndex];

    currIndex=(currIndex+1);   

  //    currIndex=(currIndex+1)%piecesOrder.length;

    fallingPiece = new Piece(choice, playfield);

    ghostPiece = new Piece(choice, playfield);

    ghostPiece.isghost = true;

    ghostPiece.cells = fallingPiece.cells;

​

    redraw();

​

}

​

function hardDrop(piece, playfield) {

    // move down as long as current position is valid

    while (playfield.isValid(piece)) {

        piece.moveDown();

    }

    // in the last iteration the position isn't valid,

    // so move up

    piece.moveUp();

}

​

​

function toggleGhost() {

    ghostMode = !ghostMode;

}

​

​

function keyPressed() {

​

    // for alphabet keys

    switch (key.toLowerCase()) {

        case ' ':

            hardDrop(fallingPiece, playfield);

            spawnNewPiece();

            break;

        case 'r':

            spawnNewPiece();

            playfield.resetGrid();

            break;

        case 'p':

            paused = !paused;

            break;

        // Rotation

        // --------

        case 'z':

            fallingPiece.rotateCCW();

            // if not valid, rotate back

            if (!playfield.isValid(fallingPiece))

                fallingPiece.rotateCW();

            break;

        case 'x':

            fallingPiece.rotateCW();

            // if not valid, rotate back

            if (!playfield.isValid(fallingPiece))

                fallingPiece.rotateCCW();

            break;

        // Testing

        // -------

        case 'w':

            fallingPiece.y--;

            break;

        case 'n':

            spawnNewPiece();

            break;

    }

    // non-ASCII keys

    switch (keyCode) {

        // movement controls in html file

        // to handle repeated movement

        case UP_ARROW:

            fallingPiece.rotateCW();

​

            // if not valid, rotate back

            if (!playfield.isValid(fallingPiece))

                fallingPiece.rotateCCW();

​

            break;

    }

​

​

​

}

​