Reading a Sprite Material Constant

Questions
1

I have a game object containing a sprite node, whose tint I change on creation (via a factory) like this:

sprite.set_constant(’#sprite’, ‘tint’, myVec4)

but for the life of me, I can’t figure out how to read this value at a later time.

Can someone assist me in that capacity?

2

Could you store the tint somewhere in self and then use it later? Or probably you already have it there if you passed the tint as a property at factory creation time?

But probably I am missing something…

3

My guess was that you could use:

-- recommended instead of sprite.set_constant() as it is a deprecated function
go.set("#sprite", "tint", vmath.vector4(1,1,0,1))

-- read it next frame
print(go.get("#sprite", "tint"))

But for some reason go.get() will give me the original value. I don’t recall why that is. @JCash probably knows!

4

If I spawn a sprite from factory, use go.set(sprite, “tint”, col)
and destroy it each frame, the memory used by defold keeps increasing. It only happens with tint, so I think that may be related to getting the unexpected value back.

If you do it enough you can see it’s a memory leak still. I made an issue on github for it.

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