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<spanclass="line"></span></code></pre></div><p>Features:</p><ul><li><p>title: <strong>optional</strong>. displayed at the top in a larger font. It can also be a function that returns updating text.</p></li><li><p>cost(): cost for buying the next buyable. Can have an optional argument "x" to calculate the cost of the x+1th object, but needs to use "current amount" as a default value for x. (x is a <code>Decimal</code>). Can return an object if there are multiple currencies.</p></li><li><p>effect(): <strong>optional</strong>. A function that calculates and returns the current values of bonuses of this buyable. Can return a value or an object containing multiple values.</p></li><li><p>display(): A function returning everything that should be displayed on the buyable after the title, likely including the description, amount bought, cost, and current effect. Can use basic HTML.</p></li><li><p>unlocked(): <strong>optional</strong>. A function returning a bool to determine if the buyable is visible or not. Default is unlocked.</p></li><li><p>canAfford(): A function returning a bool to determine if you can buy one of the buyables.</p></li><li><p>buy(): A function that implements buying one of the buyable, including spending the currency.</p></li><li><p>buyMax(): <strong>optional</strong>. A function that implements buying as many of the buyable as possible.</p></li><li><p>style: <strong>optional</strong>. Applies CSS to this buyable, in the form of an object where the keys are CSS attributes, and the values are the values for those attributes (both as strings).</p></li><li><p>layer: <strong>assigned automagically</strong>. It's the same value as the name of this layer, so you can do <code>player[this.layer].points</code> or similar.</p></li><li><p>id: <strong>assigned automagically</strong>. It's the "key" which the buyable was stored under, for convenient access. The buyable in the example's id is 11.</p></li></ul><p>Sell One/Sell All:</p><p>Including a <code>sellOne</code> or <code>sellAll</code> function will cause an additional button to appear beneath the buyable. They are functionally identical, but "sell one" appears above "sell all". You can also use them for other things.</p><ul><li><p>sellOne/sellAll(): <strong>optional</strong>. Called when the button is pressed. The standard use would be to decrease/reset the amount of the buyable, and possibly return some currency to the player.</p></li><li><p>canSellOne/canSellAll(): <strong>optional</strong>. booleans determining whether or not to show the buttons. If "canSellOne/All" is absent but "sellOne/All" is present, the appropriate button will always show.</p></li></ul></div></div></main><!--[--><!--]--><!----><!--[--><!--]--></div></div></div></div></div><!----><!--[--><!--]--></div></div>
