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class Utils {
/**
* "Real" modulo (always >= 0), not remainder.
*/
static mod(a, n) {
return ((a % n) + n) % n;
}
/**
* Return a random integer between min and max (upper bound is exclusive).
*/
static randomInt(maxOrMin, max) {
return (max)
? maxOrMin + Math.floor(Math.random() * (max - maxOrMin))
: Math.floor(Math.random() * maxOrMin);
}
static randomFloat(maxOrMin, max) {
return (max)
? maxOrMin + (Math.random() * (max - maxOrMin))
: Math.random() * maxOrMin;
}
/**
* Clamp a val to [min, max]
*/
static clamp(val, min, max) {
return Math.min(Math.max(min, val), max);
}
/**
* Returns a promise that will resolve after the specified time
* @param ms Number of ms to wait
*/
static delay(ms) {
return new Promise((resolve, reject) => {
setTimeout(() => resolve(), ms);
});
}
/**
* Compatibility with iOS' SCNAction.wait()
*/
static wait(duration, range = 0) {
return this.delay(duration * 1000
- range * 1000 / 2
+ this.randomInt(range * 1000));
}
}
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