Function parseAnimationOptions

packages/melonjs/src/renderable/animation.ts:36–66

(
	arg?:
		| string
		| (() => unknown)
		| {
				onComplete?: () => unknown;
				next?: string;
				loop?: boolean;
				speed?: number;
		  }
		// `null` is passed by the internal animation-chain call
		// (`setCurrentAnimation(next, null, true)`), so it must be accepted.
		| null,
)

 * @category Animation
 */
export function parseAnimationOptions(
	arg?:
		| string
		| (() => unknown)
		| {
				onComplete?: () => unknown;
				next?: string;
				loop?: boolean;
				speed?: number;
		  }
		// `null` is passed by the internal animation-chain call
		// (`setCurrentAnimation(next, null, true)`), so it must be accepted.
		| null,
): AnimationOptions {
	if (typeof arg === "string") {
		return { next: arg, loop: true, speed: 1 };
	}
	if (typeof arg === "function") {
		return { onComplete: arg, loop: true, speed: 1, legacyFn: true };
	}
	if (arg !== null && typeof arg === "object") {
		return {
			onComplete: arg.onComplete,
			next: arg.next,
			// only an explicit `false` disables looping
			loop: arg.loop !== false,
			speed: typeof arg.speed === "number" ? arg.speed : 1,
		};
	}
	return { loop: true, speed: 1 };
}