38 lines
873 B
JavaScript
38 lines
873 B
JavaScript
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export let last_update = Date.now();
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export function calc_delta_time()
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{
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let now = Date.now();
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let dt = (now - last_update) / 1e3;
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dt = Math.min(dt, 0.016);
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last_update = now;
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return dt;
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}
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export function event_listener_array(whos, event_names, callback, options = null)
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{
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if (!Array.isArray(whos))
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{
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whos = [whos];
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}
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for (const name of event_names)
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{
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for (const who of whos)
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{
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who.addEventListener(name, callback, options);
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}
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}
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}
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export async function import_js_as_module(url)
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{
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return new Promise((resole, reject) =>
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{
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const body = document.getElementsByTagName('body')[0];
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const script = document.createElement('script');
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script.type = 'module';
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script.src = url;
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script.onload = resole;
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body.appendChild(script);
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});
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}
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