Wow, you're right. Thanks for the correction. I don't know why I said all of that, when a few days ago I had read the Löve source code and seen how it differentiates the possible uniform types (int, float etc), and used int in a shader myself... The OpenGL wiki does list more types that should be av...

Try self:withinCols(5) so the sugar becomes FallingSand.withinCols(self, 5).

The colon syntax is explained in here (the entire PIL e-book is useful btw): https://www.lua.org/pil/16.html

Unorm16: according to this answer , on older OpenGL versions all data types are mapped to floats. So in your case, it would be a vec2 indeed. In the OpenGL wiki it says that there are other GLSL data types like int, uint, ivecn, uvecn and dvecn, so I think that after some GLSL version those new typ...

I'm in the same boat, in that I haven't tried the Löve audio system yet. What I'd do is make a folder with a main.lua inside it and treat it like a sandbox, testing all kinds of stuff. You mentioned that Banjo Kazooie style of speech, I think there are only two ways: playing the same source over and...

Using a flat array of attributes set by pointer index timed a bit faster than using an array of structs. But using structs leads to less cumbersome code, as instead of "myAttributes[vertexOffset + attributeOffset] = value", you'd do "myVertex.attribute = value". So unfortunately ...

I'm not too surprised. In LuaJIT, external function calls via standard Lua (as opposed to via FFI) either prevent compilation, or require trace stitching (meaning, switch to interpreter mode, run the function, switch back to compiled mode and resume), both of which are slow. I already got caught by...

Ehhh, here's something weird. From my tests, that Lua-based method in the OP is slightly faster than the Box2D one. Point for LuaJIT I guess, it's probably optimizing that function amazingly. I honestly thought the C++ one would be faster. point-in-polygon_benchmark.png The code I'm using is this (t...

Also check love.graphics.getWidth() and love.graphics.getPixelWidth(), in the Window section of the graphics page:
https://love2d.org/wiki/love.graphics#Window

Yes, this: https://love2d.org/wiki/Shape:testPoint That's cool dusoft, nice tip. That will rely on the fast C++ Box2D implementation. The testing code seems to be this: https://github.com/love2d/love/blob/main/src/libraries/box2d/collision/b2_polygon_shape.cpp#L250 They're using a facingness test b...

roundedRectanglePreview.gif Example of drawing a round-corner rectangle using a pixel shader. While there's the rx,ry parameters of love.graphics.rectangle() that make a rounded rectangle using geometry, in this way it's done by fading the alpha of pixels outside of the rounded corners. io.stdout:s...