"Questions that don't deserve their own thread" thread

[s-ol]

Is there a way to add luacrypto to LÖVE ?
I belive I need to compile LÖVE with this but how would I go about doing that ?

You need to compile it and ship the resulting .dll/.so/.dylib on every platformy then just load it via 'require'. You could in theory re-compile a patched LÖVE version that includes it but that would actually be more complicated.

[Ranguna259]

I've managed to compile it on linux by installing through luarocks but I have no idea on how to do this on windows.

[bobbyjones]

Ranguna259 just find binaries from the interwebs

[Ranguna259]

Ranguna259 just find binaries from the interwebs

I can't find them anywhere.

I give up, LOVE should have some form of cryptography methods. I want to communicate with a server and to make a secure connection I need to setup a Public key cryptograchy scheme, to do this I need cryptography functions which luacrypto has and LOVE doesn't..

Maybe I should add this to Post-0.10.0 feature wishlist.

[rmcode]

I could need help with making my shaders work on Raspi. Problem is, I don't have a raspi myself so I can't test it.



Shader code is here:
https://github.com/rm-code/bomb-dodgers ... palette.fs
https://github.com/rm-code/bomb-dodgers ... er/blur.fs
https://github.com/rm-code/bomb-dodgers ... er/wave.fs

Any pointers would help

[slime]

GLSL ES 1.0 (the shading language used by OpenGL ES 2.0) doesn't allow custom default values for uniform/extern variables.

[pgimeno]

I hope this makes sense as i have a hard time searching for a method on this. Is there a simple approach to getting a 'negative' colour depending on what is drawn behind? For instance, if i have a canvas with colours that clash with another transparent canvas drawn in front, is there a way to make the top canvas have inverted colours?

An example would be white text scrolling across a black background which might contain white squares -- when the white square is behind, that part of the texts colour becomes negative, so it's black instead.

I imagine it could be done with shaders, but that's ahead of my current knowledge. Are there any build in functions or 'hacks' to get this behavior?

The closest built-in is blend mode "subtract" but that won't do what you want in most circumstances. A suitable blend mode for your purposes is one called "difference" which, to my knowledge, is not implemented in OpenGL and thus neither in LÖVE. It is the absolute value of the difference between what is already painted and what you're painting. You can check it as a layer blending mode in e.g. Gimp.

You need a shader, and even then, you need to use a canvas with a copy of the background that you can pass to the shader, because there's no way to do that otherwise.

At least to the extent of my knowledge. I hope someone proves me wrong.

[Ranguna259]

Can I add luacrypto to LÖVE through FFI ?

[bobbyjones]

Can I add luacrypto to LÖVE through FFI ?

You don't need to. Just ship the binaries and load them up. You don't have to recompile love for them.

[Ranguna259]

You don't need to. Just ship the binaries and load them up. You don't have to recompile love for them.

The problem is I can't find the binaries anywhere, I can't compile the code on windows and I wasn't talking about recompiling love, I wanted to compile the code through luaJIT's FFI, which would load the c code inside Lua.