Hola, estoy haciendo un proyecto en javascript y querría cambiar la figura del cuadrado por una bola. el codigo con (cuadrado).
He probado diferentes cosas pero o me va...
Os dejo el codigo que he hecho hasta ahora
Espero que me podaís ayudar
Código [Seleccionar]
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<style>
canvas {
border:1px solid #d3d3d3;
background-color: red;
}
</style>
</head>
<body onload="startGame()">
<script>
var myGamePiece;
function startGame() {
myGamePiece = new component(30, 30, "yellow", 0, 0);
myGameArea.start();
}
var myGameArea = {
canvas : document.createElement("canvas"),
start : function() {
this.canvas.width = 480;
this.canvas.height = 270;
this.context = this.canvas.getContext("2d");
document.body.insertBefore(this.canvas, document.body.childNodes[0]);
this.interval = setInterval(updateGameArea, 20);
},
stop : function() {
clearInterval(this.interval);
},
clear : function() {
this.context.clearRect(0, 0, this.canvas.width, this.canvas.height);
}
}
function component(width, height, color, x, y, type) {
this.type = type;
this.width = width;
this.height = height;
this.x = x;
this.y = y;
this.speedX = 1;
this.speedY = 1;
this.gravity = 0;
this.gravitySpeed = 0;
this.bounce = 0.5;
this.update = function() {
ctx = myGameArea.context;
ctx.fillStyle = color;
ctx.fillRect(this.x, this.y, this.width, this.height);
}
this.newPos = function() {
this.gravitySpeed += this.gravity;
this.x += this.speedX;
this.y += this.speedY + this.gravitySpeed;
this.hitBottom();
if(this.x > 450){
this.speedX = -this.speedX;
}
if(this.x < 0){
this.speedX = -this.speedX;
}
if(this.y < 0){
this.x = x;
this.y = y;
this.speedX = 2;
this.speedY = 2;
this.speedX = 2;
this.speedY = 2;
this.gravity = 0;
this.gravitySpeed = 0.5;
this.bounce = 5;
}
if((this.x > 0)&&(this.x<250)&&(this.y>100) && this.speedY > 0){
this.speedY = -this.speedY;
}
}
this.hitBottom = function() {
var rockbottom = myGameArea.canvas.height - this.height;
if (this.y > rockbottom) {
this.y = rockbottom;
this.gravitySpeed = -(this.gravitySpeed * this.bounce);
}
}
}
function updateGameArea() {
myGameArea.clear();
myGamePiece.newPos();
myGamePiece.update();
}
</script>
</body>
</html>He probado diferentes cosas pero o me va...
Os dejo el codigo que he hecho hasta ahora
Código [Seleccionar]
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<style>
canvas {
border:1px solid #d3d3d3;
background-color: red;
}
</style>
</head>
<body onload="startGame()">
<script>
function startGame() {
myGamePiece = new component(30, 30, 30, 0, 0);
myGameArea.start();
}
var myGameArea = {
canvas : document.createElement("canvas"),
start : function() {
this.canvas.width = 480;
this.canvas.height = 270;
this.context = this.canvas.getContext("2d");
document.body.insertBefore(this.canvas, document.body.childNodes[0]);
this.interval = setInterval(updateGameArea, 20);
},
stop : function() {
clearInterval(this.interval);
},
clear function() {
ctx.fillStyle = 'rgba(255, 255, 255, 0.3)';
ctx.fillRect(0,0,canvas.width,canvas.height);
}
}
}
function draw() {
clear();
ball.draw();
ball.x += ball.vx;
ball.y += ball.vy;
function component(width, height, radius, x, y, color) {
this.type = type;
this.width = width;
this.height = height;
this.x = x;
this.y = y;
this.speedX = 1;
this.speedY = 1;
this.vx: 5,
this.vy: 1,
radius: 25,
color: 'blue',
this.gravity = 0.1;
this.gravitySpeed = 0;
this.bounce = 0.5;
this.update = function() {
ctx = myGameArea.context;
ctx.fillStyle = color;
ctx.fillRect(this.x, this.y, this.width, this.height);
}
this.newPos = function() {
this.gravitySpeed += this.gravity;
this.x += this.speedX;
this.y += this.speedY + this.gravitySpeed;
this.hitBottom();
if(this.x > 450){
this.speedX = -this.speedX;
}
if(this.x < 0){
this.speedX = -this.speedX;
}
if(this.y < 0){
this.x = x;
this.y = y;
this.speedX = 2;
this.speedY = 2;
this.speedX = 2;
this.speedY = 2;
this.gravity = 0;
this.gravitySpeed = 0.5;
this.bounce = 5;
}
}
this.hitBottom = function() {
var rockbottom = myGameArea.canvas.height - this.height;
if (this.y > rockbottom) {
this.y = rockbottom;
this.gravitySpeed = -(this.gravitySpeed * this.bounce);
}
}
}
function updateGameArea() {
myGameArea.clear();
myGamePiece.newPos();
myGamePiece.update();
}
</script>
</body>
</html>Espero que me podaís ayudar