jrtechs-Block-Battle/front end/singlePlayer.html

<script src="/socket.io/socket.io.js"></script>

<script>


    window.addEventListener("keydown", function(e)
    {
        // space and arrow keys
        if([32, 37, 38, 39, 40].indexOf(e.keyCode) > -1)
        {
            e.preventDefault();
        }
    }, false);

    window.onload = function()
    {
        var canvas = document.getElementById("canvasZP");
        var c = canvas.getContext('2d');
        c.fillStyle= "black";
        c.fillRect(0,0,canvas.width,canvas.height);
    };
    function playZP()
    {

        var animate = window.requestAnimationFrame || window.webkitRequestAnimationFrame ||
            window.mozRequestAnimationFrame || function (callback)
        {
            window.setTimeout(callback, 1000 / 60)
        };
        var canvas = document.getElementById("canvasZP");
        var width = 700;
        var height = 700;
        canvas.style.textAlign = 'center';
        var context = canvas.getContext('2d');
        var keysDown = {};


        var score = 0;
        var dead = false;
        //player
        var Player = function(x,y)
        {
            this.x = x;
            this.y = y;
            this.width = 25;
            this.height = 25;

            this.speed = 3;

            this.facing = 40;

            this.updateDirection = function(key)
            {
                facing = key;
            }

            this.render = function()
            {
                context.fillStyle = "rgba(0, 45, 160, 1)"; //green
                context.fillRect(this.x, this.y, this.width,this.height);
            }

            this.move = function()
            {
                for (var key in keysDown)
                {
                    var value = Number(key);
                    if (value == 37) //left
                    {
                        this.x = this.x - this.speed;
                    }
                    else if (value == 39) //right
                    {
                        this.x = this.x + this.speed
                    }
                    else if(value == 38) //up
                    {
                        this.y = this.y - this.speed
                    }
                    else if(value == 40) //down
                    {
                        this.y = this.y + this.speed
                    }
                    else if(value == 32)
                    {
                        var added = false;

                        for(i = 0; i< bullets.length; i++)
                        {
                            if(bullets[i] == -1)
                            {
                                bullets[i] = new Bullet();
                                added = true;
                                break;
                            }

                        }

                        if(added == false)
                        {
                            bullets.push(new Bullet());
                        }


                    }
                }

            }

        }
        var p = new Player(350, 350);


        //bullet
        var Bullet = function()
        {
            this.x = p.x;
            this.y = p.y;
            this.width = 10;
            this.height = 10;

            this.speed = 4;
            this.facing = p.facing;


            this.move = function()
            {

                if (this.facing == 37) //left
                {
                    this.x = this.x - this.speed;
                }
                else if (this.facing == 39) //right
                {
                    this.x = this.x + this.speed
                }
                else if(this.facing == 38) //up
                {
                    this.y = this.y - this.speed
                }
                else if(this.facing == 40) //down
                {
                    this.y = this.y + this.speed
                }

            }

            this.render = function()
            {
                context.fillStyle = "rgba(255, 0, 199, 1)"; //green
                context.fillRect(this.x, this.y, this.width,this.height);

            }
        }
        var bullets = [];


        function getRandomIntInclusive(min, max) {
            min = Math.ceil(min);
            max = Math.floor(max);
            return Math.floor(Math.random() * (max - min + 1)) + min;
        }

        //zombie
        var Zombie = function(x,y)
        {
            this.x = x;
            this.y = y;
            this.width = 25;
            this.height = 25;
            this.speed = 3;

            var side = getRandomIntInclusive(0,3);
            var mid = getRandomIntInclusive(0,700);
            if(side === 1)
            {
                this.x = mid;
                this.y = 0;
            }
            else if(side === 2)
            {
                this.x = 700;
                this.y = mid;
            }
            else if(side === 3)
            {
                this.y = 700;
                this.x = mid;
            }
            else
            {
                this.x = 0;
                this.y = mid;
            }

            this.render = function()
            {
                context.fillStyle = "rgba(0, 160, 0, 1)"; //green
                context.fillRect(this.x, this.y, this.width,this.height);
            }

            this.move = function()
            {
                if(this.x  > p.x + this.speed)
                    this.x -= this.speed;
                else if(this.x + this.speed < p.x )
                    this.x += this.speed;


                if(this.y > p.y + this.speed)
                    this.y -= this.speed;
                else if(this.y + this.speed < p.y )
                    this.y += this.speed;
            }
        }
        var zombies = [];
        zombies.push(new Zombie());


        var render = function()
        {
            context.fillStyle = "#000000";
            context.fillRect(0, 0, width, height);


            context.fillStyle = "rgba(255, 255, 255, 1)";
            context.font= "20px Georgia";
            context.fillText("Score: " + score,10,25);
            for(i = 0; i< zombies.length; i++)
            {
                if(zombies[i] != -1)
                {
                    zombies[i].render();
                }


            }
            for(i = 0; i< bullets.length; i++)
            {
                if(bullets[i] != -1)
                {
                    bullets[i].render();
                }

            }

            p.render();
        }

        var update = function()
        {
            addZombie();
            p.move();

            for(i = 0; i< zombies.length; i++)
            {

                for(z = 0;z < bullets.length; z++)
                {
                    if(zombies[i] != -1 && bullets[z] != -1)
                    {
                        if(Math.abs(zombies[i].x - bullets[z].x) < 25 &&
                            Math.abs(zombies[i].y - bullets[z].y) < 25)
                        {
                            score++;
                            zombies[i] = -1;
                            bullets[z] = -1;
                        }
                    }
                }

                if(zombies[i] != -1)
                {
                    zombies[i].move();
                }

            }
            for(i = 0; i< bullets.length; i++)
            {
                //checks to see if goes out of bounds
                if(bullets[i].x < 0 || bullets[i].y < 0 || bullets[i].x > 700 || bullets[i].y > 700)
                {
                    bullets[i] = -1;
                }

                if(bullets[i] != -1)
                {

                    bullets[i].move();
                }

            }

            for(i=0; i<zombies.length; i++)
            {
                if(zombies[i] != -1 && Math.abs(p.x - zombies[i].x) < 25 &&
                    Math.abs(p.y - zombies[i].y) < 25)
                {
                    dead = true;
                }
            }

        }
        var counter2 = 0;
        var counter = 0;
        var rate = 180;
        var addZombie = function()
        {
            counter2++;
            counter++;
            var added = false;
            if(counter >= rate)
            {
                for(i = 0; i< zombies.length; i++)
                {
                    if(zombies[i] == -1)
                    {
                        zombies[i] = new Zombie();
                        added = true;
                        break;
                    }

                }

                if(added == false)
                {
                    zombies.push(new Zombie());
                }

                counter = 0;
            }
            if(counter2 >= 60)
            {
                if(rate > 30)
                {
                    rate = rate -5;
                }
                counter2 = 0;
            }
        }



        var sent = false;

        var tic = function()
        {
            if(dead)
            {
                context.fillStyle = "#000000";
                context.fillRect(0, 0, width, height);

                context.fillStyle = "rgba(255, 255, 255, 1)"; //green
                context.font= "20px Georgia";
                context.fillText("You died with a score of " + score,200,340);

            }
            else
            {
                update();
                render()
            }

            animate(tic);
        }

        window.addEventListener("keydown", function (event)
        {
            if(event.keyCode >=37 && event.keyCode <=40)
            {
                p.facing = event.keyCode;
            }

            keysDown[event.keyCode] = true;
        });

        window.addEventListener("keyup", function (event)
        {
            delete keysDown[event.keyCode];
        });
        animate(tic);

    }

    var socket = io();


</script>



<div><canvas id="canvasZP" width="700" height="700"></canvas></div>
<div><input type="submit" name="play" value="Play Game" onclick="this.blur();playZP()"/></div>