winged turret
Hey,
I'm getting back into Godot and I'm working on the demo of my project. It is largely based around having a drawing canvas used in-game so that is most of my concern. The problem is, I have no idea how to implement that with Godot. Does anybody have some experience with that or can point me to a useful resource about this topic?
Thank you!
vague oxide
You mean like using a pen or brush to draw lines on a surface?
winged turret
yes exactly. Possibly I want to extend that to have a few different brushes. Basically a small in-game digital art software
vague oxide
If your game is in 2D you can use the Line2D node
If you're drawing in 2D but in a 3D world, you can use Line2D and a subviewport
If you're drawing in 3D... afaik there is no easy way to do it, there are a few Line3D plugins online but I've never used them, or you can build a mesh yourself but that requires knowledge on how meshes are built and it's a pain in the ass to do
winged turret
It's going to be in 2D and be seperate from the actual game world. Thanks for your suggestion! I have used Line2D to but I'm unsure if performance wise this would be a good solution, since a new line2d node will be created everytime the pen/mouse button is lifted.
vague oxide
There is probably a way to do it with shaders and a single quad (you send the points and lines to the shader and it renders accordingly) but it sounds like a pain as well
But yeah depending on the number of lines you allow, performance will definitely be an issue, especially if your brush texture has transparency
winged turret
Uff I have no idea about shaders, but I will look into it. Hmm this will definetly be a big problem for me. There is also the draw functions from CanvasLayer, haven't tested that yet. Then there is set_pixel on an ImageTexture object that may work
golden nova
why not write to a texture and display the texture?
vague oxide
Uff I have no idea about shaders, but I will look into it. Hmm this will definet...
Didn't know about, this, sounds like a good solution
golden nova
unless you need it to be vector based
winged turret
So create a sprite2D with an empty canvas texture (white canvas), create the image texture than draw in the imagetexture and update the sprite texture with the new one?
heady smelt
Anw, i have a question, how to showing variable real time in debugging?. So that i can know it's work or not
golden nova
should make your own topic or ask in #❓┃quick-help
but you can use print statements, or the Evaluator under Debugger
heady smelt
ohh i see. Sorry, just know im still beginner. "Evaluator"? where?
golden nova
so at the bottom where it says Output, Debugger etc click Debugger
then at the top of the window that appears click Evaluator, 3rd from the left
heady smelt
i found it, then how to use?
golden nova
I've never used it but I guess type in the variable you want to watch and click Add