Drawing a CanvasItem Manually ( not overriding _draw() )

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Drawing a CanvasItem Manually ( not overriding _draw() )

chriswizard

Hi everyone! This is my first forum post. Ever. So please correct me if I make an etiquette mistake.

I've done quite a bit of searching and reading but there's not as much documentation for Godot as for Unity, etc... so I decided to finally reach out to the forum on this.

I have an array various nodes from my scene tree that I would like to manually draw at a specified location in the root Viewport. I would like these nodes to still behave as normal, drawing as normal. It is my current (probably flawed understanding) that CanvasItem nodes store their draw calls in the graphics card and that the RID associated with this can be accessed by node.get_canvas_item().

What I am having trouble figuring out is how to take that RID and make a draw call to it at a different location.

My desired behavior is to take every node in an array and draw a second copy of it about 400 px to the right, preferably in GDScript.

Thanks in advance for your help!

vnen

If all you want is redraw the nodes in a different place, I have two ideas:

Make a duplicate of every node and offset their position.
Make a CanvasItemMaterial with a shader that redraw them at the offset, them apply it to all of the nodes you want to duplicate.

chriswizard

Thanks vnen!

I was unable to get the shader to draw in more than one place. I was looking to make a generic solution object for continuous space that could be scrolled (like walking off the left/right of the screen and entering on the other side in 2D except that it is scrolling as if it was one continuous space), and duplicating nodes will probably be the best bet.

I'm going to shelve this task for now because it's not the central mechanic to the prototype I'm making. If I come back to this, I'll let you know how I progress!