Note: I don't mean disrespect to Badnik and his OBJ tutorial, but i can still see a lot of people asking on how to build OBJ bots, so here we go!
In this tutorial i will be showing you how to make a bot using 3d modeling software and importing it to RA2
First of all you will need:
Sketchup online program -
app.sketchup.com/appNOTE: Any other modeling program works, its just that i'm used to Sketchup
Blender -
https://www.blender.orgOBJ2RA2 -
https://gametechmods.com/forums/downloads/?sa=view;down=320Now that we have all the necesarry stuff, lets make a bot!
DESIGNING A BOT:
Here is a simple design i kinda based off lucky
You can make whatever you want, but this it what i chose because it is gonna be easy to explain some stuff on it
So first of all what you need to know:
BLUE IS BAD
Parts that i've selected are not gonna be displayed in ra2. Blue colour means that the mesh is inverted. For Bots like this one that has a dedicated "hole" for flipper its bad because you will have a mesh the bottom of the bot, and empty on the other side
To fix it, you cant simply reverse faces because:
The outside is now inverted. To fix that you need to make a new layer inside. So basically just draw a new layer on it
You can either draw it like this: (simple, only need to add a layer on middle)
Or this: (more complex, also need to add layer on more places)
After you are done, go to
And export as STL.
EDITING IN BLENDER:
After you launched Blender,
get rid of that boxImport the model
After you load the bot you might see that the bot is not on the grid
To fix that, just set geometry to origin
Chances are it is pretty much oversized
To shrink it down, just select the Scale option (or press s on keyboard), and scale it down.
Best width size would be around 1 block from the middle (you can go a bit bigger or a bit smaller)
After you scaled it, time to change the mode to edit mode
First of all, you need to UV the model. Go to mesh, and UV Unwrap and Smart UV Project
Press OK
So UV Mapping is done
Now you need to:
A. Recalculate normals to be outside
B. Triangluate Faces
That is pretty much it! If you dont select either of them, bot wont show up in RA2
All you need to do now, is to export the bot as OBJ and youre done with blender
After exporting, you will get OBJ file.
CONVERTING THE BOT FOR RA2:
Drag obj file into OBJ2RA2
NOTE: If a bot has over 86 faces Control board hit (basically that part where the bot sparks before it dies) game crashes (thanks geese for clarifying that)
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Drag the newly converted bot file into the folder, and test it in ra2
And there we go!
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