Space Invaders

var player;

var bullets = [];

var shields = [];

var shieldNum = 4;

var invaderCols = 10;

var invaderRows = 5;

​

var alienField;

var invaderSprite;

​

var restartButton;

​

//Sound

var shootSound;

var move = [];

var invaderDie;

var hitSound;

​

function preload() {

    //I changed some of the sounds around to make it less annoying

    invaderSprite = loadImage('inv.png'); //https://news.konsolenkost.de/wp-content/uploads/2016/07/Space-medium-invader.sh-600x600.png

    shootSound = loadSound('Destroy.wav');

    for(var i = 0; i < 4; i++) {

        move[i] = loadSound((i+1)+'.wav');

    }

    invaderDie = loadSound('Fire.wav');

    hitSound = loadSound('Die.wav');

}

​

function setup() {

    createCanvas(700, 750);

    player = new Player();

    alienField = new AlienField(width/2, height/4, invaderRows, invaderCols, invaderSprite);

    alienField.init();

    for(var i = 0; i < shieldNum; i++) {

        shields.push(new Shield(width*0.1+(width*0.8)/(shieldNum-1)*i, height-150));

        shields[i].init();

    }

    restartButton = createButton('Restart');

    restartButton.size(100, 50);

    restartButton.position(width/2- 50, height/2+width/10);

    restartButton.mouseClicked(restart);

    restartButton.hide();

}

​

function draw() {

    background(0);

    if(!player.gameOver && !alienField.gameOver && !alienField.win) {

        for(var i = bullets.length-1; i >= 0; i--) {

            bullets[i].update();

            bullets[i].render();

            if(bullets[i].despawn()) {

                bullets.splice(i, 1);

            }

        }

        for(var i = 0; i < shieldNum; i++) {

            shields[i].render();

            shields[i].update(bullets);

        }

        alienField.update();

        player.score += alienField.alienHit(bullets);

        alienField.alienShoot(bullets);

        alienField.render();

        player.render();

        player.update();

        player.hit(bullets);

    } else if(!alienField.win && (player.gameOver || alienField.gameOver)) {

        textSize(width/10);

        fill(255);

        textAlign(CENTER, CENTER);

        text("Game Over!", width/2, height/2-width/10);

        text("Score: " + player.score, width/2, height/2);

        restartButton.show();

    } else if(alienField.win) {

        textSize(width/10);

        fill(255);

        textAlign(CENTER, CENTER);

        text("You Win", width/2, height/2-width/10);

        text("Score: " + player.score, width/2, height/2);

        restartButton.show();

    }

}

​

function restart() {

    player.reset();

    alienField.reset(width/2, height/4, invaderRows, invaderCols, invaderSprite);

    for(var i = 0; i < shieldNum; i++) {

        shields[i].reset();

    }

    restartButton.hide();

    bullets = [];

}

​

function keyPressed() {

    switch(key) {

        case 'a':

        case 'A':

            player.moveLeft = true;

            break;

        case 'd':

        case 'D':

            player.moveRight = true;

            break;

        case ' ':

            bullets.push(player.shoot());

            break;

    }

}

​

function keyReleased() {

    switch(key) {

        case 'a':

        case 'A':

            player.moveLeft = false;

            break;

        case 'd':

        case 'D':

            player.moveRight = false;

            break;

    }

}