Spritemap that works with Ammo

gistfile1.lua

Spritemap = class("Spritemap")
Spritemap._mt = {}

function Spritemap._mt:__index(key)
  return rawget(self, "_" .. key) or self.class.__instanceDict[key]
end

Spritemap:enableAccessors()

function Spritemap:initialize(img, fw, fh, complete, ...)
  self.complete = complete
  self.frame = 1
  self._image = type(img) == "string" and love.graphics.newImage(img) or img
  self._width = self._image:getWidth()
  self._height = self._image:getHeight()
  self._columns = math.floor(self._width / fw)
  self._rows = math.floor(self._height / fh)
  self._quads = {}
  self._animations = {}  
  self._completeArgs = { ... }
  
  for x = 0, self._columns - 1 do
    for y = 0, self._rows - 1 do
      self._quads[#self._quads + 1] = love.graphics.newQuad(x * fw, y * fh, fw, fh, self._width, self._height)
    end
  end
  
  self:stop()
  self:applyAccessors()
end

function Spritemap:update(dt)
  if self.playing then
    local anim = self._animations[self._playing]
    
    if self._timer > anim.time then
      self._timer = self._timer - anim.time
      
      if self._animIndex == #anim.frames and not anim.loop then
        self.complete(unpack(self._completeArgs))
        self:stop()
      else
        self._animIndex = self._animIndex % #anim.frames + 1
      end
    else
      self._timer = self._timer + dt
    end
  end
end

function Spritemap:draw(x, y, r, sx, sy, ox, oy, kx, ky)
  love.graphics.drawq(self._image, self._quads[self.frame], x, y, r, sx, sy, ox, oy, kx, ky)
end

function Spritemap:add(name, frames, rate, loop)
  self._animations[name] = { frames = frames, loop = loop, time = 1 / rate }
end

function Spritemap:play(name)
  self._playing = name
end

function Spritemap:stop()
  self._playing = nil
  self._animIndex = 1
  self._timer = 0
end