I can understand the concept of sending moves with ajax. However, I'm curious about how a game session initiates. How does one player extend an offer to play to another player? And once the second player agrees, how is the offer received by the first player? I am aware of WebSockets for facilitating data pushing. But I wonder how games managed this process before the introduction of WebSockets.
To achieve this, you can utilize basic ajax requests, requiring a server to oversee all game sessions. Simply create a function that sends a request to the server every few seconds to verify if the user has accepted the game invitation.
var listener = setInterval(checkAcceptance, 1000);
function checkAcceptance() {
//ajax request to check if user has accepted the game
}
Once the game is accepted, you may halt the listener from further actions.
clearInterval(listener);
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