Function testCollide

app/utils/common.ts:37–42

(subject: Rect, object: Rect, threshhold = 0)

/** 用来判断subject和object是否相撞 */
export function testCollide(subject: Rect, object: Rect, threshhold = 0) {
  return (
    between(subject.x - object.width, object.x, subject.x + subject.width, threshhold) &&
    between(subject.y - object.height, object.y, subject.y + subject.height, threshhold)
  )
}

export const frame = (x: number) => (1000 / 60) * x