59 lines
1.1 KiB
TypeScript
59 lines
1.1 KiB
TypeScript
// components/background/snow/index.ts
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import Toolkit from "../../../utils/Toolkit";
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interface Snowflake {
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x: number;
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s: number;
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speed: number;
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}
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Component({
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data: {
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snowflakes: [] as Snowflake[],
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timer: undefined as number | undefined,
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docWidth: 375,
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docHeight: 667,
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},
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methods: {
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createSnowflake() {
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const snowflake = {
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x: Toolkit.random(0, this.data.docWidth),
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s: Toolkit.random(6, 20),
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speed: Toolkit.random(14, 26)
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};
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this.setData({
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snowflakes: [...this.data.snowflakes, snowflake]
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});
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}
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},
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lifetimes: {
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attached() {
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const systemInfo = wx.getWindowInfo();
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this.setData({
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docWidth: systemInfo.windowWidth,
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docHeight: systemInfo.windowHeight,
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timer: setInterval(() => {
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this.createSnowflake();
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if (40 < this.data.snowflakes.length) {
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if (this.data.timer) {
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clearInterval(this.data.timer);
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}
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this.setData({
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timer: undefined
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})
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}
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}, 2000)
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});
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},
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detached() {
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if (this.data.timer) {
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clearInterval(this.data.timer);
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this.setData({
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timer: undefined
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})
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}
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}
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}
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}) |