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Answer to Question #295727 in HTML/JavaScript Web Application for chethan

the goal of this code is quickly to get off the ground with classes.

given playerName, Nitro and speed are inputs write a super class Race with property and methods

• the first line of input containing as string playerName
• the second line of input containing as string Nitro
• the third line of input containing as string speed
• the output consists of multiple lines with the appropriate texts

sample input1

sample output1

Race has started

speed 50; Nitro 50

speed 70; Nitro 60

Alyssa is the winner

speed 0; Nitro 60

sample input2

sample output2

speed 150; Nitro 50

speed 170; Nitro 60

Joel is the winner

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Simple car racing game using JavaScript

A Pen by HARUN PEHLİVAN on CodePen .

Simple car racing game using JavaScript

October 18, 2020

Hello guys in this tutorial we will create simple car racing game Using HTML CSS and javaScript

First we need to create two files  index.html  and  style.css  then we need to do code for it.

Add below code inside index.html

Then we need to add code for  style.css  which code i provide in below screen.

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Car Racer JavaScript Game Exercise Vanilla JavaScript

Explore how to create a custom JavaScript Car racer game from scratch using only JavaScript Practice Exercise #webdevelopment #learn #academy #courses #web Students enrolled in the course 31 Course Rating 3.76 Explore how to create a custom JavaScript Car racer game from scratch using only JavaScript Practice Exercise #webdevelopment #learn #academy #courses #web Students enrolled in the course 31 Course Rating 3.76 Read More

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• Dec 18, 2021

Animated Car Race Game - Get Javascript Assignment Helps

Here is an animated car race game using HTML/CSS and Javascript. In which two car will move ,the one first cross the line will win. There is a button ,the game will start after the button is clicked.

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Responsive Car Game using HTML, CSS, and Javascript

Hello friends, today in this blog, we'll see how to create a responsive car game using HTML, CSS, and Javascript. In our previous blog, we saw how to create a filterable image gallery with a preview using HTML, CSS, and Javascript . Now it's time to create a responsive car game. I've also shared many projects related to Javascript. Don't forget to check here .

In this design [Responsive Car Game] there is a road in the middle of the page as you can see in the image above and a car in the middle of the road and a button at the bottom of the page. when you click on the start game button the game will start and a car sound will be played in the background. You can move the car by using the left and right arrow keys of the keyboard.

You may like these:-

• Responsive Animated Card Design
• Custom Context or Right Click Menu Design
• How to Detect User Location using Javascript
• How to Create Responsive Accordion Design

Preview is available here .

Javascript Code

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Introduction to HTML5 <canvas>

How to build a drivable car in html5 and javascript, prerequisites.

• Intermediate Level of JavaScript Experience
• Intermediate Level of HTML Experience
• Understanding of Sine, Cosine, and Tangent
• Image for use in project
• Github Repo

Project Demo

Introduction to the canvas.

The release of HTML5 brought a myriad of changes to the web development community, but the canvas element, combined with some clever JavaScript, is what allows us to create complex and dynamic graphical content for the web. We will be focusing on it specifically to build a basic control system for a car in a top down browser based game.

So how does it work? Essentially, the canvas tag is the stage for all of your graphical content located in the markup. A series of methods in JavaScript were developed to manipulate the canvas. The canvas element is the only bit of markup needed for this project.

Next, we will look at how to actually draw some simple shapes and import images to the canvas using JavaScript! First thing we need to do is grab the canvas from the HTML document and then grab the "context" of the element. The context controls how the canvas element displays graphics. Contexts can be 2D or 3D, but we will be focusing on 2D for our top down game controls. Now let's draw some basic shapes!

So let's go over what's actually happening here step by step.

• Set window.onload to your draw function.
• Create a reference to the canvas tag using the DOM.
• Get the 2D context of the canvas tag so we may build shapes and graphics.
• We set the fillStyle property of the context to a certain color. This allows any shapes we create to use this property in their creation.
• We then use the method fillRect() of the canvas tag to build a rectangle with x and y coordinates. This translates into fillRect(x1, y1, x2, y2). Since we already set the context fillStyle to a color, the rectangle uses that to fill in itself.

The process of importing an image is a bit different because we are not actually drawing it using JavaScript.

• We first make a new image object
• Set its src property to the filename of your image
• Pass the image object into the context with x and y coordinates

When the car is drawn using the drawImage() method, it will be drawn at coordinate 0,0 by the top left corner of the image.

So your code should now look like this. You can grab a copy of the car image here .

Making our car move

Canvas handles movement much like traditional animation does in cartoons. Think of the canvas tag like a flipbook. Each time you draw something using the context of canvas, you are drawing in a single page in a flipbook. So how do we program a flipbook?

• Draw a single page (Initialize your image and import it into the context)
• Start a new page
• Repeat steps 1 and 2 indefinitely

So how do we start a new page? We use this.

This will clear anything drawn in that particular section of the canvas. We will use this to simulate starting on a new blank page.

For step three, we need to indefinitely loop through our statements while making changes with each iteration. However, like a flipbook, we need to add a factor of time to the equation. If we just loop through, the canvas will only display our final result, but we want each change to display incrementally with a small delay. Think about when you flip through a flipbook. Each new page is revealed a fraction of a second apart from each other. We can simulate this in JavaScript with the setInterval method. Your code should now look like this (We are taking this moment to split up the drawing).

We can stop the animation by passing the interval id returned by setInterval into the clearInterval function.

Apart from the use of setInterval, HTML5 also provides a JavaScript API called requestAnimationFrame for working with animations with the canvas tag. It has the benefit of optimizing some of the animation features of the canvas tag and can stop animations from running in tabs that are not visible. We will not be using it for this tutorial as it's not cross browser compatible and requires knowledge of callback functions and recursion. However, if you are interested in learning more about it, you can go to this page on requestAnimationFrame to learn more about the requestAnimationFrame API.

Controlling the Movement

Soh cah toa.

If you have had a high school math course, you may recognize these letters. They represent SINE, COSINE, and TANGENT. They are used to in calculating the angles and lengths of triangles. How will we use this? Well consider the movement of our car as described in the diagram below.

Because the car is moving at an angle, the rates at which x and y increment are different. We calculate these differences using the SINE and COSINE functions in JavaScript. We need to multiply our angle by Math.PI/180 to convert it to radians, another way to represent angles in math. We need to do this because the rotate method we will be using soon requires an angle in the form of radians. If we don't have the angle formats match, neither will the car's new position and new angle.

Now we need to make our car rotate. Lucky for us, the Canvas API includes a rotate method! The rotate method, like our drawImage method, does not rotate the object around its center, but at the left corner of the object. This means we need to make a very small adjustment to our movement statements as well as implementing the rotate method.

• Save the current state of our context and then center it to the object to rotate.
• Rotate the context by the angle in radians.
• Draw the image, but subtract half of the width and half of the height from the coordinates. This makes up for the fact that we are rotating around the corner of our object.
• Restore the previous context state so that it is not centered around our object.
• The translate method will now take the place of drawing the image at x and y.

We now have a car which can move and rotate over a period of time. Next we will tie these movements to our keyboard so that we may control our car!

In making our car move, we need to identify what exactly we will be changing with each keystroke. For our controls we will make use of the WSAD keys. The numerical values for them, also known as key codes, are as such.

Well there you have it. We now have a working controllable car built in HTML5.

For further reading, I would suggest to researching JavaScript design patterns and object oriented programming. This will allow you to support several cars at once and manage more complex code that comes in writing larger HTML5 applications.

Further Reading

Html5 resources.

• https://developer.mozilla.org/en-US/docs/HTML/Canvas
• http://www.w3schools.com/html/html5_canvas.asp
• http://paulirish.com/2011/requestanimationframe-for-smart-animating/

JavaScript Design Patterns

• http://addyosmani.com/resources/essentialjsdesignpatterns/book/

Object Oriented JavaScript

• https://developer.mozilla.org/en-US/docs/JavaScript/Introduction_to_Object-Oriented_JavaScript

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Use the arrow keys to drive the car.

Cross the finish line before time runs out.

Double click for fullscreen. Press CONTROL for turbo.