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Exploring RESIZE Scale Mode in Phaser 3

We explored FIT scale mode in previous article. We already did most of the base work for calculating and scaling sprites and texts and respositioning them in the scene view area so let see how much of additional code do we need to add in order to change our game from FIT to RESIZE scale mode. First we need to change game config as following

Now we need to add a resize event in our create method as following

Create resize method as following

In resize method we retrieve width and height of the game from “gameSize”. We will reposition the controls by simply calling “positionControls”. This change is made for both scenes. See below for the complete code of both scenes (All changes in the code from FIT mode is marked)

We also need to change tweens since they are used for moving sprites. If tweens are running while game is resized,[…]

Phaser 3 Scale Manager is here. Exploring Phaser 3 with 3.16.1 version now

I just checked Phaser release log and have been pleasantly surprised to see the new Scale Manager available now with version 3.16.1 so we are now going to update our Peg Solitaire code to make it responsive and use the newly released scale manager. One thing I would like to do away with is to stop using absolute size values and calculate those values depending upon display area available for the game (just like we did it in Phaser 2). The first thing we need to change with 3.16.x version is to add scale property in game configuration as following

Another change I did was to remove css for canvas element which we had earlier added to center align our game. Our app.css file now looks like this

You can also see that we have declared ‘parent’ attribute as ‘mygame’ in our scale configuration so we are going to add a div in our html[…]

Exploring Phaser 3 with a Game: Adding Tweens

In previous articles (part 1 and part 2) we created a game with multiple scenes. Now we are going to add some tweens to it to make pegs jump over the holes.

Since the main board is just switching the sprite frames, we needed a temporary sprite which we will move between the holes. We added “removePeg” method which starts the tween on temporary sprite. clickPeg method is changed to call “removePeg” and we also removed code to update sprite frames in clickPeg. Those frames will now be changed in the tween onStart and onComplete events. Code to check for “gameover” is also moved to the tween onComplete event since we want to wait for the pegs to move before checking for “gameover” and switching to another scene. The updated game code now runs as following

Exploring Phaser 3 with a Game: Adding Multiple Scenes

In part one we had made peg solitaire game in Phaser 3 which was a single scene game. We will further explore Phaser 3 and use multiple scenes. Most of the times games would have a menu screen and a separate game screen. Many games would also keep a separate screen once the game is over so let us make changes in our game to add another scene which will be called once the game is over (either game is finished or there are no further moves). We are going to define our “game over” scene as following

Game over scene simply displays a “game over” message and total number of moves it took to finish. In case of “no win” we can also display no of pegs remaining. In “preload” method of this scene we are loading “restart” image which will be used for restart button and attached with the “pointerup” event.[…]

Exploring Phaser 3 with a Game

After sticking with Phaser 2 (CE) for a while finally I decided to jump onto Phaser 3 (ver 3.15.1). Though there is still some work going on such as Scale Manager which is not released yet but the api seems to have grown and stablized with plenty of documentation available now. We are going to write a game while we explore this deeper. Let us write classic game of Peg Solitaire which is also known as just “Solitaire” in England and Brainvita in “India”. First we are going to create an html file (index.html) with following content

html file includes phaser js and our game code (game.js) which is placed in js folder. Let us start with the basic one screen setup as following

If you are coming from Phaser 2 then you would notice some differences. We are starting a game and passing a config which defines the[…]

Use textarea in Phaser Game

In order to use textboxes in canvas we can use html input components and position them over the canvas. I recently had a requirement to display a message board resembling “textarea” in a Phaser game. The game was responsive so it also required repositioning and resizing of the textarea. I am posting bare minimum code to achieve this fuctionality here. Add following html

We have added a textarea which is hidden initially. We will display this component after resizing and repositioning inside the game. Now add css as following in app.css

We can customize scrollbar styles to make it look nicer using webkit scrollbar properties. You can change these styles to match your game. This works on chrome and safari. Other browsers do not support these properties but you can still stylize it using normal css styles to match your game. Now add the game code as following


Quick Tip

Shun window.onload in HTML5 games

A lot of javascript developers have been using window.onload casually in their code but this is something which we should completely avoid since window.onload is only called once and if there are multiple window.onload events, then only the last onload event gets called. In our Phaser games we normally initialize the game as following

window.onload is called after the main HTML, all CSS files, images and other resources have been loaded and rendered. We don’t want to stall loading of the game and its resources until everything else on the page has been loaded and rendered so as soon as initial HTML document has been loaded and parsed, we can start loading our game without waiting for page stylesheets, images, etc to finish loading. An alternate approach for this using vanilla javascript would be

This starts loading the game as soon as HTML DOM is parsed and ready and no fear of having to change[…]

Add Link to Rating Feature in Windows UWP App

In oder to add a link to rate your app following code can be used in javascript UWP app

Replace storeID with your app’s Store ID and call “rate” method on a button click event which will open the app in windows store with rate popup overlay.

App Promotion Trick for Windows Store App

If you are a publisher who has published multiple UWP apps in the windows store and want to add a catalog of all your other apps in your UWP app, then there is no need to write a lot of code to achieve this capability. Microsoft has provided URI scheme to launch the Microsoft Store app to specific pages in the store. We can use search capability to find products from a specific publisher and simply launch that URI using LaunchUriAsync API method. For ex. in order to launch all products published by some “XYZ Corporation” in the windows store we can simply call the following URI ms-windows-store://publisher/?name=XYZ Corporation Following code example demonstrates how this can be achieved using 3 lines of code in Javascript store app

Simply call this method on on some action such as a button click and it will launch a new popup window containing all apps from[…]

Open Share Dialog from Universal Windows Javascript App (UWP)

Opening Share Dialog Popup in Windows Universal App is very simple and with a few lines of code, this functionality can be quickly added to any app. The code below can be used to share an app’s web URL (you can use MS Store URL of the app as well) in UWP Javascript application

In the application page ready event we need to initialize DataTransferManager and attach an event listener for “datarequested”. In that method you can set title, display, web link properties which will be used by the dialog popup. Store ID of the app can be found from “App Management -> App Identity” page of the specific app in your developer account. In order to launch Share Dialog Popup simply call “showShareUI” method on some action (such as some button click etc). This will open dialog box as following Share Dialog Popup displays the title and description at the[…]