Question

So, I have an array

//loop here
nummobs = nummobs + 1
Mobs = {}
Mobs[nummobs] = Entity.Init(x(locations to spawn mob), y(locations to spawn mob),"testMob")

Then, call the draw method…

for i = 0, table.getn(Mobs) do
    Mobs[i].draw()
end

Error: map.lua:54(Mobs[i].draw() line): attempt to index field ‘?’ (a nil value)… BUT IT HAS SOMETHING IN IT! right?

Anyone ever try something like this? Can anyone fix it?

Thanks

Nate

Answer 1

Lua uses 1-based indexes for arrays. Thus, the range of an array is [1, n] inclusive, where n is the number of elements.

More importantly, you can use ipairs and not have to write out the loop components:

for i, mob in ipairs(Mobs) do
  mob:draw()
end

Oh, and never use getn; use the # length operator instead.