Help With Array

Games
#1

I have an array which holds 55 objects.

On launch I get the number of objects in the array, I have it displayed in a HUD. no problems so far.

However when an object is shot, the array number still holds at 55.

I have removed the objects and nill them out for sure.

I have posted the main bits below, it resides in my main.lua.

I cant get my head around it , any suggestions?

[lua] – create enemy –

function createEnemy(x,y,row)

          scene = display.newGroup()
          allEnemys = {}

          local enemys = require(“modules.enemy”)
          for j = 1, 5 do
          for i = 1, 11 do
          allEnemys[#allEnemys + 1] = enemys:new()
          allEnemys[#allEnemys]:init(i * 60, j* 70 +70,j ) 
          allEnemys[#allEnemys]:start()
          end
end[/lua]

[lua]

– enemy counter –
onEnterFrame = function( event)

        local other  = event.other
        if (allEnemys) then
            local enemyCount = 0
              for k,v in pairs (allEnemys) do
                  enemyCount = enemyCount  +1
              end

              if enemyCount > 20
              then
– do somehting –
              end
             enemyCountHUD.text = enemyCount
        end
   return true
end
end [/lua]

[lua]Runtime:addEventListener(“enterFrame”, onEnterFrame)[/lua]

#2

It looks like you are counting the table keys - my guess would be the keys you are using still exist, and you have set the value to nil.

Does it count correctly if you check that v is not nil?

#3

yes, the values of the keys still exist, I checked.

I did a [lua]print(k,v)[/lua]

in the loop, when they are shot no change in count and table entries.

I can make the enemy class and main lua available if needed.

TBH, I decided to mess with classes and now I wish I hadnt, it is becoming really awkward. I originally shelved this project but figured I had done too much to leave it.

I am nearly finished but have 2 issues remaining that I just cant solve( 2 days).

Any more help would be most welcome.

#4

**SOLVED**

ok, so basically and rather stupidly I was removing the the “object”, nilling the “object” off the screen and not removing it from the array.

I was under the impression by removing the screen object it would remove automatically from the array, no this wasn’t the case.

I just made a function call from my enemy class, to a table.remove function in the main.lua and tada all fine.

Exciting I now have a new value to play with.

thanks for all the help

Bud

#5

It looks like you are counting the table keys - my guess would be the keys you are using still exist, and you have set the value to nil.

Does it count correctly if you check that v is not nil?

#6

yes, the values of the keys still exist, I checked.

I did a [lua]print(k,v)[/lua]

in the loop, when they are shot no change in count and table entries.

I can make the enemy class and main lua available if needed.

TBH, I decided to mess with classes and now I wish I hadnt, it is becoming really awkward. I originally shelved this project but figured I had done too much to leave it.

I am nearly finished but have 2 issues remaining that I just cant solve( 2 days).

Any more help would be most welcome.

#7

**SOLVED**

ok, so basically and rather stupidly I was removing the the “object”, nilling the “object” off the screen and not removing it from the array.

I was under the impression by removing the screen object it would remove automatically from the array, no this wasn’t the case.

I just made a function call from my enemy class, to a table.remove function in the main.lua and tada all fine.

Exciting I now have a new value to play with.

thanks for all the help

Bud