Tool.js

function Tool(typeName, bound) {
    this.typeName = typeName;
    this.width = 40;
    this.lifeSpan = 1400; //lifespan is approx 1 miniute

    if (typeName == "shell") {
        this.height = 39;

        this.apply = function (player) { //changes player behavior
            this.age = 0;
            player.step /= 2;
        };
        this.restore = function (player) { //restore player behavior
            player.step *= 2;
        };
    }

    if (typeName == "heart") {
        this.height = 34;

        this.apply = function (player) { //changes player behavior
            player.life++;
        };
    }

    if (typeName == "ironman") {
        this.height = 60;
        this.apply = function (player) { //changes player behavior
            this.age = 0;
            player.isIronman = true;
            //change pic Id
        };
        this.restore = function (player) { //restore player behavior
            player.isIronman = false;
            //change pic Id

        };

    }
    if (typeName == "shoe") {
        this.width = 50;
        this.height = 24;

        this.apply = function (player) { //Apply: changes player behavior
            this.age = 0;
            player.kickLevel *= 1.5;
        };
        this.restore = function (player) { //restore player behavior
            player.kickLevel /= 1.5;
        };
    }
    if (typeName == "skate") {
        this.height = 46;
        this.apply = function (player) { //Apply: changes player behavior
            this.age = 0;
            player.step *= 1.5;
        };
        this.restore = function (player) { //restore player behavior
            player.step /= 1.5;
        };

    }
    if (typeName == "box") {
        this.height = 38;

        this.apply = function (player) {
            player.bombNum++;
        };
    }
    this.maxX = bound.maxX - this.width;
    this.maxY = bound.maxY - this.height;
    this.posX = Math.round(Math.random() * this.maxX);
    this.posY = Math.round(Math.random() * this.maxY);
    this.centerX = this.posX + this.width / 2;
    this.centerY = this.posY + this.height / 2;
}

Tool.prototype.extendLife = function (t) {
    this.lifeSpan += t.lifeSpan;
};

Tool.prototype.checkCollision = function (o, margin) {
    margin = margin || 0;
    var dist = Math.ceil(Math.sqrt(Math.pow(this.centerX - o.centerX, 2) + Math.pow(this.centerY - o.centerY, 2)));
    var collide = dist < margin + this.width / 2 + o.width / 2;
    return collide ? dist : false;
};

module.exports = Tool;