skelesp

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• Arrow function in "showPrompt" promise throws error

  in Bangle.js • 4 years, 6 months

  

  Thanks @Raik, changing the argument name fixed it!

• Arrow function in "showPrompt" promise throws error

  @skelesp started

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• Arrow function in "showPrompt" promise throws error

  in Bangle.js • 4 years, 6 months

  

  Hi

  I'm having problems to make following code work...

  class GamePlay {
    constructor(game) {
      this.game = game;
    }
    
    activateGameButtons() {
      setTimeout(() => {
        // --- Set reset button watch
        setWatch( (e) => {
          // Check for long press...
          var isLong = (e.time-e.lastTime)>0.4;
          if (isLong) {
            closeApp();
          }
          else this.resetScorePrompt();
        }, BTN2, { repeat: true, debounce: 50, edge: "falling" });
      },100);
    }
    
    resetScorePrompt() {
      clearWatch();
      E.showPrompt("Reset the score\nto 0-0?").then( (reset) => {
        if (reset) {
          this.game.resetScore();
        }
        this.activateGameButtons();
      });
    }
  }
  
  

  After pressing BTN2 I get my prompt and when selecting "yes" or "no" I get the following error (full error in attachment):

  Uncaught SyntaxError: Got => expected ',' at ....
  

  Is there something wrong with my Javascript code ? To me it looks like arrow functions aren't supported in promises. Because in other places, arrow functions work fine. When using 'function (reset) {}' instead of '(reset) => {}' I can enter the function, but then I'm having trouble with the "this scope".
  (I'm a Javascript noob, so it might just be wrong Javascript code I guess :-))

• E.showMenu: watches on BTN's stay active when menu is left

  @skelesp started

  • 5 comments
  • 1,567 views

  @skelesp replied
• E.showMenu: watches on BTN's stay active when menu is left

  in Bangle.js • 4 years, 6 months

  

  Thanks, Gordon.

  Thumbs up for your efforts and quick responses. And Bangle.js is real fun ;-)

• E.showMenu: watches on BTN's stay active when menu is left

  in Bangle.js • 4 years, 6 months

  

  Thanks works perfect!

  Might be a good idea to add to the documentation what E.showMenu() does.

• E.showMenu: watches on BTN's stay active when menu is left

  in Bangle.js • 4 years, 6 months

  

  Hi

  Below you can find some example code to illustrate my problem.

  When I select "Start a game" in the menu, I start my game. But when I press BTN1 "in the game", the menu keeps flashing and when I press BTN1 / BTN2, the menu items are selected again and the game function for these buttons are activated too.

  So how can I stop the built in button watches of the E.showMenu() function? Or what am I doing wrong?

  Greets

  Stijn

  // Game functions
  function startGame () {
    g.clear();
    g.setColor("#ffffff");
    g.drawString("game started", 50, 100);
    
    setWatch(function() { 
      g.clear();
      g.setColor("#ffffff");
      g.drawString("btn 1 pressed", 50, 110); 
      console.log("btn 1 pressed");
    }, BTN1, {repeat: true});
    
    setWatch(function() { 
      g.clear();
      g.setColor("#ffffff");
      g.drawString("btn 2 pressed", 50, 120); 
      console.log("btn 2 pressed");
    }, BTN2, {repeat: true});
  }
  
  // Global functions
  function closeApp() {
    console.log("App closed");
    load();
  }
  
  // --- Menu
  var mainMenu = {
    "": { "title": "Menu" },
    "Start a game": () => startGame(),
    "Exit" : () => closeApp(),
  };
  
  function onInit(){
    E.showMenu(mainMenu);
  }
  
  // --- Initialize app
  onInit();
  

• Difference between E.openFile and storage.open?

  @skelesp started

  • 2 comments
  • 1,133 views

  @Gordon replied
• Difference between E.openFile and storage.open?

  in Bangle.js • 4 years, 6 months

  

  Hi Gordon

  Can you explain the difference between E.openFile and storage.open? In existing apps, I see they use "storage.open" more often than E.openFile, but it isn't clear to me when I have to use which function.
  https://www.espruino.com/Reference#t_l_E_openFile
  https://www.espruino.com/Reference#l_Storage_open

• Open file from storage and upload again doesn't work

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