factorite/drawutil.lua

function arrow(x, y, w, h, a)
  love.graphics.line(
    x + w/2 + math.sin(math.rad(a + 180)) * w/2 * 0.8, y + h/2 + math.cos(math.rad(a + 180)) * h/2,
    x + w/2 + math.sin(math.rad(a)) * w/2 * 0.8, y + h/2 + math.cos(math.rad(a)) * w/2
  )
  love.graphics.line(
    x + w/2 + math.sin(math.rad(a + 180)) * w/2 * 0.8, y + h/2 + math.cos(math.rad(a + 180)) * h/2,
    x + w/2 + math.sin(math.rad(a + 100)) * w/2 * 0.8, y + h/2 + math.cos(math.rad(a + 100)) * h/2
  )
  love.graphics.line(
    x + w/2 + math.sin(math.rad(a + 180)) * w/2 * 0.8, y + h/2 + math.cos(math.rad(a + 180)) * h/2,
    x + w/2 + math.sin(math.rad(a - 100)) * w/2 * 0.8, y + h/2 + math.cos(math.rad(a - 100)) * h/2
  )
end