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@@ -9,6 +9,14 @@ module.exports = class Moon {
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* The position of the moon in space
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*/
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this.position = position;
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+ /**
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+ * The position of the moon at the time of creation
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+ *
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+ * This is a silly trick to get a clean copy of the Vector, but it works.
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+ *
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+ * @private
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+ */
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+ this._initialPosition = position.negate().negate();
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/**
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* The current velocity of the moon
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*/
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