Introduction: Blender Models to Unity Engine

Blender Game Engine Export To Android
Blender Game Engine Exporting
Blender Game Engine Export Files

This tutorial is going to teach you how to use the 3D modeling program Blender and how to export your creations into the Unity game engine.

Supplies

Blender 2.8

Unity Engine

Step 1: Downloading Blender and Unity

To download blender all you have to do is go to their website https://www.blender.org/

Once there you should see a blue bar that says Download Blender 2.8X.

Click that and it will bring you to another page where you can download blender.

To download Unity, go to https://unity3d.com/get-unity/download and click download Unity Hub

Run that file once downloaded. Create an account for Unity. Once logged in, click the gear icon next to your profile and select manual activation. Click 'save license request' and then select the link underneath that. Upload the file you just downloaded and click next. For the license select personal edition and 'I don't use Unity in a professional capacity.' Click next. Download the license file and back in the Unity hub upload that file.

To export.bullet files from Blender you have to use the Blender Game Engine. First you have to setup the physical properties of each object, then create a little Python script which is invoked by a keyboard action you create in the Logic Editor. Then you run the game engine and press that key to run the script which exports the file. With Blender open and file downloaded, go to File User Preferences Add-ons Install from File. Select BlenderToGameEngineExport.py and in the addon list, search for Blender to Game Engine Export and select the checkbox and Save User Settings. The export panel is in Properties Scene and it is called Game Engine Export.

You can export your scenes to desktop (Windows, Linux and Mac) although an experimental Android version is on its way. As it uses Blender data format it will be compatible with Blender always. The files can be encrypted using BPPlayer application to secure the game deployment.
So that is exactly what we are going to do in this tutorial, create a simple but rigged, animated and textured model in Blender 2.79, then export it for use in the Godot 3.1 game engine. If I miss a point, I have created a step by step video of the process of exporting from Blender to Godot as well. Alright, let’s jump in.

Now that you have a license for Unity its time to download an engine.

Installs > add > select which year (I choose 2019) > next

Step 2: Opening Blender

Run the installer for blender and then open Blender with the shortcut icon.

Blender is an open source 3d modeling program which is capable of creating almost everything imaginable. For that to happen we first need to turn on some add-ons within Blender.

Edit > Preferences > Add-ons > enable these two add-ons: Import Images as Planes & LoopTools

Now you are ready to start creating.

Step 3: Set Up for Modeling

First things first, reference images always.

Go onto your preference of image searching platforms and find a nice side of your weapon of choice, I will be using a knife as example.

Movement in blender :

shift + middle mouse : panning

middle mouse : rotating/revolving

scrolling : zooming in/out

Click and drag to select everything in the scene or press 'a' to select all objects. Right click and select delete at the bottom.

Press shift+a to bring up the add menu, select image as plane - navigate to your image

You should see a gray box, this is due to the viewport display, images do not show up unless you are in LookDev (Viewport shading) mode.

Rotate the object if needed to make modeling easy.

Short-cuts used

shift + A : add menu

x : delete menu

a : select all

Step 4: Creating Objects

Now that we have set up the reference image it's time to start modeling.

Currently blender is in Object mode which allows us to move/scale/rotate objects. To edit objects on the vertex level we need to be in edit mode. You can switch between these modes by pressing 'tab' or by going in the upper left corner and using the drop down box.

A basic rule for modeling is to start with the primitive that is closest to the end result. Since I am trying to create a knife, I will be using cylinders and cubes. Another rule of thumb for 3d modeling is that you do not have to create the entire object as one object. If in the real world they are separate parts, make them separate.

*my units are in inches but the default is meters so measurements may very

shortcuts used

Blender Game Engine Export To Android

g : grab/move/translate

g+g : edge slide (keeps geometry the same while only moving vertices)

r : rotate

s : scale

crtl + r : edge loops

* You can limit which axis are affected by these commands

i : inset (creates new geometry within a face based on the face)

Step 5: Finishing Up the Knife

Now that the handle is finished we are going to create the blade and the hilt as two separate objects.

The hilt is easy as we can borrow the geometry from the handle to get a rough estimate of its size. We select the handles one face and press shift + d to duplicate the geometry and then by pressing p, we are able to separate this mesh into its own object. Lastly we just need to extrude out the face and then scale it to the right size.

For the blade I choose to start with a cube since the blade is close to a rectangle. After scaling the width of the blade I add 1 edge loop to be the edge of the blade. From top view I drag out the blade's tip to the right spot constrained to the y axis. Once more edge loops are added and scaled to their right spots I merge the tip into one vertex with alt + m.

shortcuts used :

e : extrude

shift + d : duplicate geometry

p : separate menu

alt + m : merge menu

Step 6: Exporting As .fbx

Last step in blender is to export to a fbxfile.

delete your reference image first

File > export > .fbx

Now to import this file into Unity

I encourage you to create a few other objects and a simple environment maybe if you got the time.

Step 7: Importing to Unity

Create a new project in Unity

Select 3D

Once it loads in you are able to drag in your .fbx file into the assets manager

Once your file is there, you can then drag it into the scene for later use.

Congratulations you have completed this Instructable. Thank you for following along.

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