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Showing posts with the label Psychology

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Why did you give the game a bad review after playing for so many hours?

on May 27, 2019

Games Management Games Psychology

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How to become the MacGyver of surviving terrorist attacks

on February 23, 2017

Books Psychology

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Why Gamification Beats Peanut Butter on Pancakes

on October 18, 2016

Books Games growth hacking Marketing Psychology

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Give up or learn how to live in the jungle for 30 years

on November 29, 2014

Books Psychology

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The secret to who is a good trader or investor is meditation

on October 05, 2014

Books Investing Psychology

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Why we shouldn't listen to experts on global warming

on November 17, 2013

Environment Nassim Nicholas Taleb Psychology

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Book review: Predictably Irrational by Dan Ariely

on October 14, 2013

Books Investing Psychology

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Ryan Holiday explains how he can manipulate the media

on September 19, 2012

Books Psychology

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About

The one who's running this blog is me, Erik Nordeus. I'm an imagineer (creative engineer) who's interested in the intersection between art and engineering.
This is my portfolio: Habrador.com

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Popular Articles

Explaining the Hybrid A Star pathfinding algorithm for selfdriving cars

Let's say you are standing somewhere in a room and would like to find the shortest path to a goal. You can see a few obstacles, such as a table, that you would like to avoid. The easiest way to solve the problem (if you are a computer) is to divide the room into many small squares (cells) and then use the common A* (A Star) search algorithm to find the shortest path. But what if you are a car and can't turn around 360 degrees like a human can, then you have a problem! Well, at least until you learn the Hybrid A Star search algorithm . With that algorithm you will be able to find a drivable path to the goal. The reason I wanted to learn the Hybrid A* algorithm was that I took a class in self-driving cars, where the teacher showed a really cool video with a car that drove around in a maze until it found the goal: The problem was that the teacher didn't explain the Hybrid A* algorithm - he just explained the classic A* algorithm , so I had to figure it out on my own...

How to implement colormaps like Rainbow and Viridis in code

I've been working hard on making my very own digital wind tunnel in the Unity game engine. It's based on a tutorial from the YouTube series 10 Minute Physics called "How to write an Eulerian Fluid Simulator with 200 lines of code." I translated the code from JavaScript to C#, and I open sourced the implementation here: Ten Minute Physics in Unity. To simulate any fluid you need to study the Navier-Stokes equations . These are very hard to solve. In fact so hard they are a part of the Millennium Prize Problems where you can win a million dollars if you gain some insight while solving them. Therefore you need to simplify them. But even though they are simplified you can still see the vortex shedding that's happening in real wind tunnels if you put a cylinder in them. I thought this was really cool because the simulation part is just 200 lines of code running at 70 fps on the CPU. Common colormaps I wanted to improve the wind tunnel by making it more realistic...

Cybertruck Prototype vs Final Production Version - What Changed?

In 2019 I started making a 3D model of the Tesla Cybertruck prototype version in Blender. Four years later, in 2023, Elon Musk finally released the production version of the Cybertruck . Since I've studied every millimeter of the prototype version to be able to make the 3D model I thought it would be interesting to make a comparison of how much changed during the four years. Exterior Front bumper. The black front bumper has become bigger and smoother, most likely to improve the aerodynamics of the vehicle. They also added a mudguard for the front and rear wheels attached to it. Front window. Like the front bumper has become smoother to improve aerodynamics, so has the front window which is now rounded - it used to be completely flat (To be honest I think this is the case anyway - it is not rounded much to make it super visible). Wheels. The wheels are roughly the same as the prototype vehicle wheels - they added som threads to the side of the wheel. I thought t...

Bing Image Creator AI: An overview of art styles and materials you can use

The search engine Microsoft Bing has a new tool called Image Creator . This tool lets you create images from text by using an AI system called DALL·E 2 from OpenAI . If you want a superchihuahua with a red cape, just type "superchihuahua with a red cape" and you get four images in just a matter of seconds (the more images you generate the longer it will take unless you pay Microsoft some money). No-one took a photo of exactly this chihuahua dressed in a red cape - it doesn't exist in real life - it was generated by the Artificial Intelligence. Art styles The Image Creator tool can also generate images with a specific art style, such as watercolor or anime. But there's not an overview of which art styles are available, so I thought I would try a few of them and show the result here. To get a specific art style, you type "superchihuahua with a red cape, anime art style" so it understands which art style to use. The AI is smart when it comes to generate cool i...

How to make a texture atlas template the smart way

Using a texture atlas is a smart way to improve the performance of your game and minimize the number of textures you need to keep track of. A texture atlas is basically a square image you split into smaller squares with the same size. For example, this is how Minecraft's texture atlas looked like in 2011: The boring part is to make the template. I used to create a texture with the size I want the texture atlas to be, like 2048x2048. If I wanted to split it into 8x8 sections, I made a new texture with the size 256x256 with the color black. And then I copied the 256x256 texture into the texture atlas to create a chess pattern. But what if I wanted the texture atlas to be 4096x4096? Then I would have to redo it again! A better way is to first create a tiny image with the size 8x8 (I'm using Paint.Net ). Then you use the Pencil tool with a black color to create a chess pattern: Then you scale the tiny image to the size you want the texture atlas to have: Image → Resize. Set the si...

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