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red-envelope-rain

v1.0.1

Published

基于canvas、requestAnimationFrame的高性能红包雨效果

Downloads

1

Readme

red-envelope-rain

基于 canvas、requestAnimationFrame 的高性能红包雨效果

如何使用

npm i red-envelope-rain -S
import RedEnvelopeWar from 'red-envelope-rain'

this.rains = [
  {
    image: require('./img/shixin.png'),
    width: 80,
    height: 80,
    ratio: 7,
    score: 2,

    clicked: {
      image: require('./img/xiaosan.png'),
      width: 80,
      height: 80,
      translate: [-2, -2],
    },
  },
  {
    id: 2,
    image: require('./img/kong.png'),
    width: 80,
    height: 80,
    ratio: 3,
    score: 3,

    clicked: {
      image: require('./img/kong.png'),
      width: 80,
      height: 80,
      translate: [-2, -2],
    },
  }
]

this.redEnvelopeRain = new RedEnvelopeRain({
  el: '#canvas',
  preload: true,
  interval: 300,
  speed: 6,
  horizontalMovement: false,
  // boundary: 20,
  rains: this.rains,
})

// 红包气泡传出来的点击事件
this.redEnvelopeRain.$on('strike', (rain) => {
  this.score += rain.score
  console.log(rain)
})

参数

| 参数 | 说明 | 类型 | 默认值 | | ------------------ | ------------------------------------------------------------ | ------------------------- | ------ | | el | 挂载的canvas元素 | string|HTMLCanvasElement | - | | proload | 是否预加载rains中的image图片 | boolean | true | | interval | 生成红包的间隔时间 | number | 500 | | speed | 红包每帧移动的距离(px) | number | 2 | | horizontalMovement | 是否支持横向移动 | boolean | false | | boundary | 点击红包边界距离,为number时表示四边的距离,为array时表示上右下左的距离 | number|array | - | | rains | 红包数组信息 | array | - |

rains参数说明

| 参数 | 说明 | 类型 | 默认值 | | ------- | ------------------------------------ | ------ | ------ | | image | 红包图片地址 | string | - | | width | 宽度 | number | - | | height | 高度 | number | - | | ratio | 出现的权重 | number | 1 | | speed | 红包每帧移动的距离(px),优先级更高 | number | - | | clicked | 击中效果 | object | - |

clicked参数说明

| 参数 | 说明 | 类型 | 默认值 | | --------- | ------------------------------------ | ------ | ------ | | image | 击中红包图片地址 | string | - | | width | 宽度 | number | - | | height | 高度 | number | - | | translate | 相对于红包的x、y轴位移 | array | - | | speed | 红包每帧移动的距离(px),优先级更高 | number | - | | duration | 被点击红包停留时长 | number | 200 |

ratio说明

以下面例子,图片1生成的概率为1/3,图片2生成的概率为2/3。

[
  {
    image: require('./img/1.png'),
    width: 140,
    height: 120,
    ratio: 1,
  },
  {
    image: require('./img/2.png'),
    width: 140,
    height: 120,
    ratio: 2,
  }
]

事件

// 红包被击中,被回传红包信息
redEnvelopeRain.$on('strike', (rain) => {
  console.log(rain)
})

方法

| 方法名 | 说明 | 参数 | | ------ | ------------------------------------------ | -------- | | play | 游戏开始 | - | | pause | 游戏暂停 | - | | clear | 游戏停止 | - | | add | 动态添加红包 | rain信息 | | remove | 若需移除红包,则传入的rain信息需包含id字段 | id |