03 · Stars Virtual Currency Payment

Used to open the native Telegram checkout sheet to deduct Stars and securely fulfill goods.

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Implementation Tracks

Track A — Prefab Workflow

1. Open the 03_StarsPayment_Demo scene.
2. Drag FastTMA_StarsPayButton under Canvas or your store shelf panel.
3. Select the button and customize parameters in TelegramStarsButton within the Inspector:

Field	Description
Product Id	Unique product identifier (e.g., vip_pass_tier1)
Title	Checkout sheet title, max 32 characters (e.g., 30-Day VIP Pass)
Description	Product description, max 255 characters
Stars Price	Amount of Stars to charge (e.g., 50)

4. Fulfillment Binding: In the On Purchase Success (String) event slot at the bottom, click +, drag in your fulfillment script (e.g., BagManager), and select the reward fulfillment method from the dropdown.

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Track B — Non-Invasive Component Attachment

1. Select an existing custom purchase button in your commercial project (preserving original animations and materials).
2. Click Add Component → TelegramStarsButton.
3. Remove the fulfillment method previously attached to Button OnClick, and bind it to the OnPurchaseSuccess event slot of TelegramStarsButton.

Runtime Logic: Upon click, the component automatically:

• Requests an invoice link from the Cloudflare Worker deployed in Step 2
• Opens the native Telegram checkout sheet
• Triggers the fulfillment function after payment confirmation

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Demo Reference

See Packages/com.fasttma.core/Samples/03_StarsPayment for the full Demo implementation.