Factorio Forums

Posted: **Sat Jul 02, 2016 7:50 am**

im trying to set up a script that will upon an entity's death create an entity at that position. i think im close to getting it to work but im having issues with factorio telling me (attempt to index gobal 'script' a nil value). im not sure what is wrong with it as any references to script.on_event look the same as what i did.

here is the code

Code: Select all

local oretest = {}

script.on_event(defines.events.on_entity_died, function(event)
  if event.entity.name == "small-biter" then
  local smallbiter = event.entity
  local targetpos = smallbiter.surface.find_non_colliding_position("copper-ore", smallbiter.position, 10, 1)
	end
	
	local tore = player.surface.create_entity({
         name = "copper-ore", 
         position = targetPos
         })
		 end)

Posted: **Sat Jul 02, 2016 9:50 am**

"script" shouldn't be the problem here, if that's nil... are you actually doing this in control.lua, not data.lua? Or are you using some ancient version of Factorio?

Actual problems:

You're defining targetpos as a local variable in an if block, then try to use it outside that block where it's not in scope anymore.
Lua is case sensitive. You're defining targetpos, then try to use it as targetPos.
You're trying to index player, which isn't defined anywhere. Using the entity that died here would make more sense.

Posted: **Sat Jul 02, 2016 10:13 am**

i was not doing it in control.lua or data.lua. i was trying to it inside entity.lua in the prototypes folder of the mod. the player reference was a mistake, as i copyed an example code and forgot to fix it. thanks

Posted: **Sat Jul 02, 2016 10:17 am**

now it works perfectly. thank you

Posted: **Sat Jul 02, 2016 10:26 am**

kingarthur wrote:i was not doing it in control.lua or data.lua. i was trying to it inside entity.lua in the prototypes folder of the mod.

That counts as data.lua, since all those prototype definitions are included from there.

Posted: **Sat Jul 02, 2016 10:31 am**

oh. well that will be good to know moving forward

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