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cupcake.html
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<!DOCTYPE html>
<html>
<head>
<title>Cupcake Catcher</title>
</head>
<body>
<canvas style="border:2px solid black" id="canvas"></canvas>
<script>
//Canvas
var canvas = document.querySelector("#canvas");
var ctx = canvas.getContext("2d");
const WIDTH = 500;
const HEIGHT = 500;
canvas.width = WIDTH;
canvas.height = HEIGHT;
//Images
var catcherOne = new Image();
var catcherTwo = new Image();
var catcherThree = new Image();
var catcherFour = new Image();
var background = new Image();
var blood = new Image();
var tile = new Image();
var food = new Image();
//Global Variables
var score = 0;
var level = 0;
var lives = 0;
var animation = 0;
var foodTimer = 0;
var gameOver = false;
var paused;
var intervalVar;
var foodList = [];
var tileList = [];
var foodDrop = [0,50,100,150,200,250,300,350,400,450]; //X Food Positions
//Objects
var tileObject = {
width: 50,
height: 20
}
var foodObject = {
width: 50,
height: 50,
speed: 3
}
var catcher = { //Player
x: 100,
y: 350,
width: 30,
height: 50,
jump: 0, //Jump height
jumpUnit: 5, //Jump velocity
onair: false,
speed: 0, //Movement velocity
leftPressed: false,
rightPressed: false,
gravity: 10,
safe: true
}
sound = function(src){
this.sound = document.createElement("audio");
this.sound.src = src;
this.sound.setAttribute("preload","auto");
this.sound.setAttribute("controls","none");
this.sound.style.display = "none";
document.body.appendChild(this.sound);
this.play = function(){
this.sound.play();
}
this.pause = function(){
this.sound.pause();
}
}
var eatingSound = new sound("sound/eat.mp3");
var droppingSound = new sound("sound/drop.mp3");
background.onload = function(){ //Once background loads, load the rest of the game
blood.onload = function(){
catcherOne.onload = function() {
catcherTwo.onload = function(){
catcherThree.onload = function(){
catcherFour.onload = function(){
food.onload = function(){
tile.onload = function(){
ctx.drawImage(background,0,0,WIDTH,HEIGHT);
ctx.strokeStyle = "white";
ctx.font = "30px Calibri";
ctx.strokeText("Click Here to Start",WIDTH/4,HEIGHT/2);
// Game Area
drawObject = function(object,x,y,width,height){
ctx.drawImage(object,x,y,width,height);
}
document.getElementById("canvas").onmousedown = function(){
if(!gameOver){
clearInterval(intervalVar);
}
startGame();
}
document.onkeydown = function(e){
if(e.keyCode == 65 && catcher.x > 0){ //LEFT "A"
catcher.speed = -5;
catcher.leftPressed = true;
}
if(e.keyCode == 68 && catcher.x < WIDTH - catcher.width){ //RIGHT "D"
catcher.speed = -5;
catcher.rightPressed = true;
}
if(e.keyCode == 87 && !catcher.onair && catcher.y == 350){ //JUMP "SPACE"
catcher.jump = 100;
catcher.onair = true;
}
if(e.keyCode == 32){
if(paused){
paused = false;
} else {
paused = true;
}
}
}
document.onkeyup = function(e){
if(e.keyCode == 65){ //LEFT A
catcher.leftPressed = false;
}
if(e.keyCode == 68){ //RIGHT D
catcher.rightPressed = false;
}
}
//CHECK CONDITIONS
foodCatcherCondition = function(f){
return ((f.x < catcher.x + catcher.width) && (catcher.x < f.x + foodObject.width)
&& (f.y < catcher.y + catcher.height) && (catcher.y < f.y + foodObject.height));
}
foodTileCondition = function(f,t){
return ((f.x < t.x + tileObject.width) && (t.x < f.x + foodObject.width)
&& (t.y < t.y + tileObject.height) && (t.y < f.y + foodObject.height));
}
catcherTileCollision = function(t){
return((catcher.x < t.x + tileObject.width)
&&(t.x <= catcher.x + catcher.width)
&& (catcher.y + catcher.height <= t.y));
}
jump = function(){
//Moving Up
if(catcher.jump > 0 && catcher.onair){ //CATCHER.JUMP CHANGED IN DOCUMENT.KEYDOWN CONDITION
catcher.y -= catcher.jumpUnit; //Y position increase by jump unit
catcher.jump -= catcher.jumpUnit; // Jump height decrease by jump unit, to reach maximum jump height (so the catcher doesn't keep lifting)
}
//Moving Down
if(catcher.jump <= 0 && catcher.jump > -100 && catcher.onair){
catcher.y += catcher.jumpUnit;
catcher.jump -= catcher.jumpUnit;
}
if(catcher.jump <= -100 && catcher.onair){
catcher.onair = false;
}
}
updateFoodPosition = function(){
for(var i in foodList){ //Delete food when out of canvas height
if(foodList[i].y > HEIGHT){
foodList.splice(i,1);//Delete elements, start position i, delete 1 element
lives--;
if(lives == 0){
gameEnd();
}
} else {
foodList[i].y += foodObject.speed;
}
}
}
updateCatcherPosition = function(){
if(catcher.leftPressed && catcher.x > 0){
catcher.x += catcher.speed;
}
if(catcher.rightPressed && catcher.x < WIDTH - catcher.width){
catcher.x -= catcher.speed;
}
if(catcher.y > HEIGHT - catcher.height) {
droppingSound.play();
catcher.y = HEIGHT - catcher.height;
gameOver = true;
}
}
gameEnd = function(){
ctx.globalAlpha = 0.55;
drawObject(blood, 100,100,300,300);
ctx.globalAlpha = 1.0;
ctx.strokeStyle = "white";
ctx.font = "30px Calibri";
ctx.strokeText("Game Over", 180,200);
ctx.strokeText("Click to Restart",160,HEIGHT/2);
clearInterval(intervalVar);
}
updatePosition = function(){
if(!paused){
ctx.clearRect(0,0,WIDTH,HEIGHT);
drawObject(background,0,0,WIDTH,HEIGHT);
foodTimer++;
if(foodTimer > level){
foodList.push({x:foodDrop[Math.round(Math.random() * 9)],y:0});
foodTimer = 0;
}
if(gameOver == true){
drawObject(catcherThree,catcher.x,470,50,30);
gameEnd();
}
else if(catcher.onair){
drawObject(catcherFour,catcher.x,catcher.y,catcher.width,catcher.height);
}
else if(animation == 0){
drawObject(catcherTwo,catcher.x,catcher.y,catcher.width,catcher.height);
animation = 1;
} else {
drawObject(catcherOne,catcher.x,catcher.y,catcher.width,catcher.height);
animation = 0;
}
for(var i in foodList){
drawObject(food,foodList[i].x,foodList[i].y,foodObject.width,foodObject.height);
}
for(var i=0;i<tileList.length;i++){
drawObject(tile,tileList[i].x,tileList[i].y,tileObject.width,tileObject.height);
};
for(var i in foodList){
if(foodCatcherCondition(foodList[i])){
score++;
eatingSound.play();
if(score % 2 == 0){
level--;
}
foodList.splice(i,1);
}
}
for(var i in foodList){
for(var j in tileList){
if(foodTileCondition(foodList[i],tileList[j])){
tileList.splice(j,1);
}
}
}
if(!catcher.onair){
for(var i in tileList){
if(catcherTileCollision(tileList[i])){
catcher.safe = true;
break;
}
catcher.safe = false;
}
if(!catcher.safe){
catcher.y += catcher.gravity;
}
}
drawObject(food,440,10,20,20);
ctx.fillStyle = "white";
ctx.font = "20px Calibri";
ctx.fillText(score,465,27);
ctx.fillText("Level: " + (100 - level + 1),10,27);
ctx.fillText("Lives: " + lives,350,27);
updateFoodPosition();
updateCatcherPosition();
jump();
}
else {
ctx.strokeStyle = "white";
ctx.font = "30px Calibri";
ctx.strokeText("Game Paused",160,HEIGHT/2);
}
}
startGame = function(){
score = 0;
lives = 5;
level = 100;
catcher.x = 100;
catcher.y = 350;
catcher.onair = false;
catcher.leftPressed = false;
catcher.rightPressed = false;
catcher.safe = true;
animation = 0;
foodTimer = 0;
gameOver = false;
tileList = [];
foodList = [];
for(var i=0; i<=9; i++){
tileList.push({x: i * 50, y:400});
};
intervalVar = setInterval(updatePosition,10);
}
}
tile.src = "images/tile.png";
}
food.src = "images/food.png";
}
catcherFour.src = "images/catcher4.png";
}
catcherThree.src = "images/catcher3.png";
}
catcherTwo.src = "images/catcher2.png";
}
catcherOne.src = "images/catcher1.png";
}
blood.src = "images/blood.png";
}
background.src = "images/background.jpg";
</script>
</body>
</html>