MakePay GameMaker Integration

Drop-in GameMaker Language scripts plus a server relay for MakePay hosted checkout links.

Features

• GML helpers for async checkout creation.
• Relay-first architecture so MakePay API keys never ship with the game.
• Product IDs are sent from the game, while pricing and entitlements stay on the relay.
• MakePay webhook verification in the relay.
• Small in-memory entitlement example for prototypes.

GameMaker Usage

Import the scripts in gml/scripts into your GameMaker project.

Create event:

makepay_init("https://payments.example.com", player_id);

Button or purchase action:

makepay_create_checkout("supporter_pack");

Async - HTTP event:

var result = makepay_handle_http(async_load);
if (is_struct(result) && result.type == "checkout_created") {
    makepay_open_checkout(result.data.url);
}

Relay

npm start

Environment:

MAKEPAY_KEY_ID=...
MAKEPAY_KEY_SECRET=...
MAKEPAY_WEBHOOK_SECRET=...
MAKEPAY_BASE_URL=https://www.makecrypto.io
MAKEPAY_PRODUCTS_JSON='{"supporter_pack":{"title":"Supporter Pack","amount":"4.99","currency":"USD","entitlement":"supporter"}}'

Routes:

• POST /checkout
• GET /entitlements/:playerId
• POST /makepay/webhooks

GameMaker Direction

The GML helpers use GameMaker's current async HTTP APIs:

• http_request manual
• HTTP async manual
• Creating extensions

Development

npm test
npm run validate