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How to Create an Icon Set using Adobe Photoshop

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In this tutorial, we are going to design a set of icons in Adobe Photoshop. An icon set needs to have the same background and theme. For learning purposes, we are going to design a sun icon, an ice flake icon, and an RSS icon. Let's get started. 1. Preparing the Canvas Step 1 Start by making a new file with size 350 px × 350 px . Click the small box next to the  Background Contents  option to change the new canvas color. Step 2 In the Color Picker dialog box, select grey ( #e0e0e2 ) for the canvas background color. Step 3 It is always a good idea to keep your work structured from the start. Make a new layer group and name it  sun . This is where we will place all layers used in the sun icon. 2. Designing the Icon Base Step 1 Use the  Rounded Rectangle Tool  to draw a rectangle with size  83 px × 64 px and  8 px  radius. To get accurate results, use the  Properties  panel. In this panel, you can simply enter the exact siz...
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Swinging Physics for Player Movement (As Seen in Spider-Man 2 and Energy Hook)

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I'm going to discuss how I like to implement a rope-swinging gameplay mechanic. When I started working on Energy Hook I mostly did everything with my own custom code. I believe it's possible to simply go into Unity and use the Configurable Joint to do some very similar stuff, but at the time it wasn't available. I'm pretty sure this has been the right call, anyway, because it gives me control over everything - and I can share it with you. The fundamentals of doing swinging the way I did - using  constraints  - are actually quite simple. (Hope you're not disappointed when you see what's under the hood.) It works the same whether you're making a 2D game or 3D game, it's just that the vectors are different, so I'll start off with 2D and then discuss some wrinkles when going to three dimensions. This article also assumes you're using a game engine like Unity that can do a lot of the work for you, like raycasting against geometry and orienting a chara...
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Android Login and Registration with PHP, MySQL and SQLite

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In my previous article Android Login and Registration Screen Design i explained designing the login and registration interfaces, but it has no functionality. In this tutorial i am explaining how to build complete login and registration system in android using PHP, MySQL and SQLite. Also this tutorial covers how to build simple API using PHP and MySQL. Prerequisites This tutorial is combination of some of my previous tutorials. I hope you covered these tutorials before. Android making HTTP Requests Android JSON Parsing Tutorial Android SQLite Database Tutorial Android Login and Registration Screen Design API (Application Programming Interface) ⇒ Accepting requests by GET/POST methods ⇒ Interact with PHP classes to get data from database or store in database ⇒ Finally will give output in JSON format 1. Creating MySQL Database and Tables As I am writing API in PHP I selected MySql database to maintain users and other related information. Open your mysql console or phpmyad...
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