VUE3 Getting Started Example: Building a Simple Sprite Animation

Vue3 is a very popular front-end framework, which has become more and more popular among developers in recent years. It is easy to learn and use, allowing front-end developers to quickly build beautiful and efficient web applications. This article will introduce how to use Vue3 to build a simple sprite animation.

What is sprite animation?

Sprite animation is a very popular animation implementation method in web development. It splices a series of small pictures together and presents animation effects by changing the offset and transparency of the pictures. This animation effect can be seen in many places, such as character animations, loading animations in games, etc.

Preparation

Before we start, we need to prepare some resources:

1. Sprite image file

First, we need A picture of a sprite. Sprites are usually made up of a number of small pictures, each of which is a frame of animation. We can find some free sprite pictures online, or we can design our own.

2. Vue CLI

In order to create our Vue3 project easily and quickly, we need to install Vue CLI on the computer. Vue CLI is a complete system for quickly building projects based on Vue.js. It provides a series of tools, build presets and plugins to help us quickly develop, build and deploy Vue applications. If you have not installed Vue CLI, please go to the official website to install it first.

Project creation

Once we have all the resources ready, we can start creating our Vue3 project.

Enter the following command in the terminal to create a new Vue3 project.

vue create sprite-animation

Then select the "Default ([Vue 3] babel, eslint)" option.

After the project is created, we need to put the sprite image into the project.

Copy the sprite image to the "public" folder of the project:

Create a new "css" folder in the "public" folder and create a new style file named For "styles.css":

In the "styles.css" file, we use the sprite image as the background image, and use CSS to set the offset, width, height and other attributes of each animation frame:

.sprite {
  background-image: url(./sprite.png);
  background-size: 1000%;
  width: 100px;
  height: 100px;
  animation: play-sprite .8s steps(10);
  /* 每个动画包含有10帧 */
}

@keyframes play-sprite {
  from { background-position: 0 0; }
  to { background-position: -1000% 0; }
}

Then we introduce this style file into the Vue3 component file and componentize the sprite animation:

<template>
  <div class="sprite-container">
    <div class="sprite"></div>
  </div>
</template>

<script>
import "../public/css/styles.css";

export default {
  name: "SpriteAnimation",
};
</script>

In this way, we have successfully componentized the sprite animation!

How to display animation?

Now that we have componentized the sprite animation, let’s show it below.

In the "App.vue" file, we need to insert the "SpriteAnimation" component into the page. Here we simply add an "AppHeader" component and insert the sprite animation component into the header.

<template>
  <div id="app">
    <app-header />
    <div class="container">
      <SpriteAnimation />
      <router-view />
    </div>
  </div>
</template>

<script>
import AppHeader from "./components/AppHeader.vue";
import SpriteAnimation from "./components/SpriteAnimation.vue";

export default {
  name: "App",
  components: {
    AppHeader,
    SpriteAnimation,
  },
};
</script>

<style>
/* 样式省略 */
</style>

At this point, we have completed the creation and display of the sprite animation! Just run the following command and you can view our animation in the browser.

npm run serve

Summary

The above is a very simple example, but we can already appreciate the power and ease of use of Vue3. Compared with previous versions, Vue3 has significantly improved performance and maintainability. When using Vue3 to develop animations or other web applications, remember to keep the above steps in mind, and you can quickly develop efficient and beautiful applications.

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