由于您正在减小“container.hpStatus”的宽度,它是几何对象,它本身就是一个容器:
https://pixijs.download/dev/docs/PIXI.Graphics.html#Graphics
正如您在“width”属性的文档中看到的那样:https://pixijs.download/dev/docs/PIXI.Container.html#width
width number
The width of the Container, setting this will actually modify the scale to achieve the value set
这意味着改变“宽度”会缩放整个容器(“container.hpStatus”)。
要在没有“失真”的情况下绘制这样的 hp 条,您可以通过在每个“tick”(每帧)上绘制 hp 条来做到这一点。
请检查以下代码 - 是您的示例,但已修改。最重要的部分是“createHpBar”函数和修改的“主循环”(ticker)。
(我还添加了一些cmets,以便您更好地理解)
这里是更新的codepen:https://codepen.io/domis86/pen/poJrKdq
const app = new PIXI.Application({
view: document.getElementById('main'),
width: 900,
height: 900,
antialias: true,
transparent: false,
backgroundColor: 0x00CC99,
});
// See: https://pixijs.download/dev/docs/PIXI.Ticker.html
let ticker = PIXI.Ticker.shared;
ticker.autoStart = false;
const container = new PIXI.Container();
app.stage.addChild(container);
function createHpBar(currentHp, maxHp, color) {
let hpBar = new PIXI.Graphics();
hpBar.beginFill(color);
let hpPortion = currentHp / maxHp;
hpBar.drawPolygon([
50, 80,
50 + (400 * hpPortion), 80,
32 + (400 * hpPortion), 150,
32, 150,
]);
hpBar.endFill();
return hpBar;
}
// Create black hp bar (the one behind the red one) and add it to our container:
let blackHpBar = createHpBar(450, 450, 0x000000);
container.addChild(blackHpBar);
container.x = 100;
container.y = 200;
let renderer = app.renderer;
// Starting amount of hp:
var currentHp = 450;
ticker.add((delta) => {
// create red hp bar which is a polygon with vertices calculated using "currentHp" amount:
let redHpBar = createHpBar(currentHp, 450, 0xFF0000);
// add red hp bar to container:
container.addChild(redHpBar);
// render our stage (render all objects from containers added to stage)
// see https://pixijs.download/dev/docs/PIXI.Ticker.html#.shared
renderer.render(app.stage);
// Remove red hp bar from our container:
// We do this because on next tick (aka: next frame) we will create new redHpBar with "createHpBar" (as you see above)
container.removeChild(redHpBar);
// Update current hp amount:
if (currentHp > 0) {
currentHp -= 1;
} else {
currentHp = 450;
}
});
// start rendering loop:
ticker.start();