代碼有什么問題，我找不到問題所在。我認為這是因為drawFrame和loadImage函數，但我不知道。那么有沒有辦法讓圖像加載后你仍然可以移動它并拍攝呢？當我嘗試刪除drawFrame函數時，什么也不起作用。如果可能的話，有沒有辦法將子彈從方形改為圓形？<html><head> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <meta charset="UTF-8"> <style> html, body { width: 100%; height: 100%; margin: 0; } canvas { cursor: crosshair; background-color: cornflowerblue; } </style></head><body> <canvas id="Trump"></canvas> <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script> (async function main() { var canvas = document.getElementById('Trump'); if (!canvas.getContext) return; var ctx = canvas.getContext('2d'); ctx.canvas.width = window.innerWidth; ctx.canvas.height = window.innerHeight; //const fps = 60; const ronaNum = 30; // number of particles at start const ronaSize = 70; // corona size const ronaSpeed = 100; // speed let chinabmg; function draw() { $("canvas").one("click", function () { chinabmg = new sound("stankytrumpchina.mp3"); chinabmg.play(); }); //mutes when clicked on m document.body.onkeyup = function (e) { if (e.keyCode == 77) { chinabmg.stop() } }; //compatability var requestAnimationFrame = window.requestAnimationFrame || //Chromium window.webkitRequestAnimationFrame || //Webkit window.mozRequestAnimationFrame || //Mozilla Geko window.oRequestAnimationFrame || //Opera Presto window.msRequestAnimationFrame || //IE Trident? function (callback) { //Fallback function };
為什么圖片加載不出來
子衿沉夜
2023-07-29 16:44:42
