Setting up Currency and Upgrades

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After you have set up the game, now it's time to set up the currency and upgrades.

JavaScript

script.js

// ... Previous code

// Upgrades for the currency
const coinUpgrades = [
    {
        id: "upg1Coins", // Unique ID
        cost: level => level.mul(10), // Cost of 10 times the level
        maxLevel: new Decimal(1000),
        effect: (level, upgradeContext, currencyContext) => {
            // `currencyContext` is the context of the currency (coins in this case)

            // Access the `boost` object to add a boost
            currencyContext.boost.setBoost({
                id: "boostUpg1Coins", // Unique ID of the boost
                // Effect of the boost, which is additive, 11 times the level of the upgrade
                value: n => n.plus(level.mul(11)).sub(1),
            });
        },
    },
    // Add more upgrades here ...
];

// Create a new currency with upgrades
const coins = coinGame.addCurrency("coins", coinUpgrades);

TypeScript

script.ts

// ... Previous code

// Upgrades for the currency
const coinUpgrades = [
    {
        id: "upg1Coins", // Unique ID
        cost: (level): Decimal => level.mul(10), // Cost of 10 times the level
        maxLevel: new Decimal(1000), // Maximum level of 1000
        effect: (level, upgradeContext, currencyContext): void => {
            // `currencyContext` is the context of the currency (coins in this case)

            // Access the `boost` object to add a boost
            currencyContext.boost.setBoost({
                id: "boostUpg1Coins", // Unique ID of the boost
                // Effect of the boost, which is additive, 11 times the level of the upgrade
                value: n => n.plus(level.mul(11)).sub(1),
            });
        },
    },
    // Add more upgrades here ...
] as const satisfies UpgradeInit[]; // Type assertion to provide upgrade type checking

// Create a new currency with upgrades
const coins = coinGame.addCurrency("coins", coinUpgrades);

Explanation:

• The coinUpgrades array contains the upgrades for the currency. Each upgrade object has the following properties:
  • id: A unique ID for the upgrade.
  • cost: A function that calculates the cost of the upgrade based on the current level.
  • maxLevel: The maximum level the upgrade can reach.
  • effect: A function that defines the effect of the upgrade. In this case, it adds a boost to the currency context.
  • Other properties can be added as needed. See the Upgrade documentation for more details.
• The coins object is created using the addCurrency method of the coinGame object. This method creates a new currency with the specified upgrades.

After this step, you can continue to the reset layer tutorial.