Story05Js :: "canvasKeyListener.js"

// Object to hold the state of pressed keys
var keysPressed = {};

// List of keys to capture
/* {{ var#keysToCapture={{ project root }}/scripts/json/gamevars/keys.json }} */

function listKeys(keys){
    list = ``;
    Object.keys(keys).forEach(key => {
        list += (len(list)>0?`, `:``)+keys[key];
    });
    return list;
}

console.log("Valid Keystrokes: "+listKeys(keysToCapture));

// Event listener for keydown to update the keysPressed object
document.addEventListener('keydown', function(event) {

    // console.log ( `key down: ${event.code}` );

    var code = keyEncode ( event.code );

    var keyIndex = keysToCapture.indexOf(code);

    console.log ( `keystroke: "${code}" (down: ${keyIndex})` );

    if ( keysToCapture.indexOf(code) === -1 ) {
        return;
    }

    keysPressed[event.code] = true;

    for ( option = 0; option < triggerKeys.length; option++ ) {

        if ( len(triggerKeys[option].key) === 1 ) {
            triggerKeys[option].key = `Key`+triggerKeys[option].key;
        }

        if ( triggerKeys[option].key === event.code ) {

            page = triggerKeys[option].dest;

            console.log ( `new page: ${page}` );

            canvasRenderPage ( );

            break;
        }
    }
});

// Event listener for keyup to update the keysPressed object
document.addEventListener('keyup', function(event) {

    // console.log ( `key up: ${event.code}` );

    var code = keyEncode ( event.code );

    var keyIndex = keysToCapture.indexOf(code);
    console.log ( `keystroke: "${code}" (up: ${keyIndex})` );

    if ( keysToCapture.indexOf(code) === -1 ) {
        return;
    }

    keysPressed[event.code] = false;

});

// Set up the interval to check key presses every 100 milliseconds
setInterval(backbuffer, 100);

function keyEncode ( code ) {

    code = addSpacesBeforeCapitalsAndNumbers(code);

    code = code.split(" ");
    if ( code[0] === `F` ) {
        code = code.join(``);
    }else if(code[1] !== undefined){
        code = code[0] + " (" + code[1] + ")";
    }else{
        code = code[0];
    }

    code = ucwords ( code );

    return code;
}