window

v0.0.3
createWindow(w, h);

Create a GLFW window.

Arguments

wWindow width
hWindow height

It is also possible to create a window in the global scope without defining a setup function.

function setup()
  -- Create the window here
  createWindow(600, 600);
end

function draw()
  -- draw things
end
See createWindow in window.h
background(r, g, b, a);

Clear a background with a color

Arguments

rThe red byte
gThe green byte
bThe blue byte
aThe alpha byte

See background in window.h
frameRate(fps);

Set the frame rate

Arguments

fpsThe frame rate to set

If frame rate is called without an argument, it will return frame per seconds 

x = 0;

function setup()
  createWindow(400, 400);
  frameRate(24);
end

function draw()
  background(51);
  text('fps: ' .. frameRate(), 20, 10);

  circle(x, 200, 32);
  x = x + 1;
end
See frameRate in window.h
deltaTimeGlobal

Elapsed time since the last draw call in seconds

x = 0;
vx = 128;

function setup()
  createWindow(400, 400);
  frameRate(24); -- try with 60
end

function draw()
  background(51);

  circle(x, height/2, 32);

  -- Get the same velocity with different framerates
  x = x + vx * deltaTime;
end
See deltaTime in window.h