lua-love-platformer/coin.lua

coins = {}

function spawnCoin(x, y)
  local coin = {}
  coin.x = x
  coin.y = y
  coin.collected = false

  coin.grid = anim8.newGrid(41, 42, 123, 126)
  coin.animation = anim8.newAnimation(coin.grid('1-3', 1, '1-3', 2, '1-2', 3), 0.1)

  table.insert(coins, coin)
end

function spawnCoins()
  for i, obj in pairs(gameMap.layers['coins'].objects) do
    spawnCoin(obj.x, obj.y)
  end
end


function coinUpdate(dt)
  for i, c in ipairs(coins) do
    if distanceBetween(c.x, c.y, player.body:getX(), player.body:getY()) <= 50 then
      c.collected = true
    end
  end

  for i=#coins, 1, -1 do
    local c = coins[i]
    if c.collected == true then
      table.remove(coins, i)
    end
  end
end