Pickin Poop

Released Pickin’ Poop, a game made in Pico 8.

Screenshot from Pickin Poop game

itch.io page

I got a lot of use out of this animate function which will take in an object with the required animation properties and animate them.

An example an object that would be sent to the function.

{
  frames={1,2}, -- refers to sprite numbers
  length = 10, -- how many ticks to display a frame for
  index = 1, -- current index of the frames list
  counter=0, -- counts up to the value of length and then increments the index
  loop = true, -- wrap around to index = 1 once the end of the list is reached
  ended = false -- set to true when end of frames is reached and loop is set to false
}

function animate(a)
  -- no calculations needed for a single frame
  if #a.frames == 1 then return end
  
  if a.ended and a.loop == false then
    return
  end
    
  a.counter += 1
  if a.counter >= a.length then   
    a.counter = 0
    a.index += 1
    if a.index > #a.frames then
      if a.loop == false then
        a.ended = true
        a.index -= 1
      else
        a.index = 1
      end
    end
  end
end