To clarify, I didn't mean "localize it right before using it".

See http://wiki.luajit.org/Numerical-Comput ... ance-Guide the part about "Do not try to second-guess the JIT compiler."

I would still test how fast localizing ipairs, pairs and next is when the locals used have the same names ... pairs() and ipairs() are called exactly once per loop, to generate the 3 variables used by the for loop. You'd save at most a single index operation on _G per loop. next() is called each it...

http://wiki.luajit.org/Bytecode-2.0#calls-and-vararg-handling Note: The Lua parser heuristically determines whether pairs() or next() might be used in a loop. In this case, the JMP and the iterator call ITERC are replaced with the specialized versions ISNEXT and ITERN. ISNEXT verifies at runtime tha...

Here's a function that takes 2 points and rotates one around the other. local function rotatePoint(cx,cy,px,py,angle) local s = math.sin(angle) local c = math.cos(angle) px,py = px-cx,py-cy return px*c - py*s + cx,px*s + py*c + cy end function love.draw() local cx,cy = 100,100 --center of rotation l...

Played around with the undocumented rasterizer, managed to draw the actual outline of a letter. local testFont = love.graphics.newFont("Power.ttf", 128) local rasterizer = love.font.newRasterizer("Power.ttf",128) local glyphData = rasterizer:getGlyphData("A") for k,v in...

Post the font I'll give it a shot.

Repeated string concatenation produces a lot of garbage for the garbage collector, work with bytes or use table.concat Here's a very bad string hashing function local maxSeed = 2^30 local function stringToSeed(s) local seed = 1 for i=1,s:len() do seed = (seed*31337 + s:byte(i))%maxSeed end return se...

Read https://github.com/kikito/anim8

Your image is 13500 pixels wide. See https://love2d.org/wiki/love.graphics.getSystemLimits