有從上到下不斷移動的精靈“綠色塊”并且它有效。是否有可能在頂部顯示像“圍繞”舞臺表演一樣移動的精靈，就像隱藏在底部一樣。我不知道如何調用這種效果，但我的意思是當綠色塊開始向下移動場景邊界時，然后再次開始在頂部顯示它。如何做到這一點，請您展示如何做到這一點？const WIDTH = 500;const HEIGHT = 500;const app = new PIXI.Application({     width: WIDTH,    height: HEIGHT,    backgroundColor: 0x000000 });document.body.appendChild(app.view);const sprite = PIXI.Sprite.from('https://i.ibb.co/b3Sjn6M/greeenblock.png');sprite.width = 100;sprite.height = 100;// Centersprite.anchor.set(0.5);sprite.x = app.screen.width / 2;sprite.y = app.screen.height / 2;app.stage.addChild(sprite);// Listen for animate updateapp.ticker.add((delta) => {    // Move from topto bottom    sprite.position.y += delta * 2;    if (sprite.position.y > HEIGHT + sprite.height / 2) {        sprite.position.y = -sprite.height / 2;    }});<script src="https://cdnjs.cloudflare.com/ajax/libs/pixi.js/5.3.3/pixi.min.js"></script>@Blindman67 提供的解決方案（閃爍）：const WIDTH = 500;const HEIGHT = 500;const app = new PIXI.Application({     width: WIDTH,    height: HEIGHT,    backgroundColor: 0x000000 });document.body.appendChild(app.view);const sprite = PIXI.Sprite.from('https://i.ibb.co/b3Sjn6M/greeenblock.png');const spriteReverse = PIXI.Sprite.from('https://i.ibb.co/b3Sjn6M/greeenblock.png');sprite.width = 100;sprite.height = 100;spriteReverse.width = 100;spriteReverse.height = 100;// Centersprite.anchor.set(0.5);sprite.x = app.screen.width / 2;sprite.y = app.screen.height / 2;spriteReverse.anchor.set(0.5);spriteReverse.x = app.screen.width / 2;spriteReverse.y = app.screen.height / 2;app.stage.addChild(sprite);app.stage.addChild(spriteReverse);let y = 0;// Euqlidian moduloconst modAbs = (value, modulo) => (value % modulo + modulo) % modulo;// Listen for animate updateapp.ticker.add((delta) => {    // Move from topto bottom    y += delta * 2;    if (y > HEIGHT + sprite.height / 2) {        y = -sprite.height / 2;    }