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add save and load state functions to nes.embed.js

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This commit is contained in:
hagi 2022-04-02 17:32:51 +02:00
parent 393f92a5d9
commit cceb5afae8
1 changed files with 23 additions and 0 deletions
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23
nes-embed.js
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@ -130,3 +130,26 @@ function nes_load_url(canvas_id, path){
document.addEventListener('keydown', (event) => {keyboard(nes.buttonDown, event)});
document.addEventListener('keyup', (event) => {keyboard(nes.buttonUp, event)});
function saveState(){
try{
var saveData = JSON.stringify(nes.toJSON());
localStorage.setItem(romName, saveData);
}catch(oException){
if(oException.name == 'QuotaExceededError'){
console.log('localStorage out of memory');
localStorage.clear();
localStorage.setItem(calcMD5(rompath), saveData);
}
}
}
function loadState(){
var saveData = localStorage.getItem(romName);
if( saveData == null ) {
console.log("nothing to load");
return;
}
var decodedData = JSON.parse(saveData);
nes.fromJSON(decodedData);
}