Detect when an element has been created?

[Lpsd]

I was wondering if there's a way to detect when an element has been created, via events.

then I found this from 2009, looks like they decided not to implement it, https://bugs.mtasa.com/view.php?id=4591#c25041

If not by handler, is it possible to replicate this kind of feature? Would be really useful imo.

 

Edited December 10, 2016 by LopSided_

[Captain Cody]

You can try this; I'm not sure of the performance impact it would have though.

 

-- Table to store current elements
Elements = {}

-- Type of element you want to search for
Type = "object"

-- Factor in already created objects --
for i,v in pairs(getElementsByType(Type)) do
	Elements[v] = true
end

-- Every secound check for new elements --
setTimer ( function()
	for i,v in pairs(getElementsByType(Type)) do
		if not Elements[v] then
				Elements[v] = true
			triggerCreated(v)
		end
	end
end, 1000, 0 )

-- Output chat box the elements data if it was newly created --
function triggerCreated(element)
	outputChatBox(tostring(element).." Created") 
end

 

Edited December 10, 2016 by CodyL

[Lpsd]

11 minutes ago, CodyL said:

You can try this; I'm not sure of the performance impact it would have though.

 

-- Table to store current elements
Elements = {}

-- Type of element you want to search for
Type = "object"

-- Factor in already created objects --
for i,v in pairs(getElementsByType(Type)) do
	Elements[v] = true
end

-- Every secound check for new elements --
setTimer ( function()
	for i,v in pairs(getElementsByType(Type)) do
		if not Elements[v] then
				Elements[v] = true
			triggerCreated(v)
		end
	end
end, 1000, 0 )

-- Output chat box the elements data if it was newly created --
function triggerCreated(element)
	outputChatBox(tostring(element).." Created") 
end

 

Just what I was looking for, thanks. 

[Captain Cody]

If you need a faster or a slower response time, lower the 1000 interval. To low may cause some performance impacts due to it looping through every thing of that object type every time that is triggered though.

[Lpsd]

Small problem when trying to output/retrieve object's co-ordinates

 

-- Table to store current elements
Elements = {}

-- Type of element you want to search for
Type = "spawnpoint"

-- Factor in already created objects --
for i,v in pairs(getElementsByType(Type)) do
	Elements[v] = true
end

-- Every secound check for new elements --
setTimer ( function()
	for i,v in pairs(getElementsByType(Type)) do
		if not Elements[v] then
				Elements[v] = true
			triggerCreated(v)
		end
	end
end, 1000, 0 )
	
function triggerCreated(element)
	outputChatBox(tostring(element).." Created") 
	local x, y, z = getElementPosition ( element )
   outputChatBox("x: " .. x .. ", y: " .. y .. ", z: ".. z)
 end

 

"tostring(element)" gives me "userdata: 000002CD", or similar (the numbers/letters change each time a new element is made)

Therefore, I can't use that with getElementPosition. Any suggestions?

[Captain Cody]

tostring element outputs the userdata of the element

 

element is the element itself if you want remove the outputchatbox tostring(element)

[Lpsd]

14 minutes ago, CodyL said:

tostring element outputs the userdata of the element

 

element is the element itself if you want remove the outputchatbox tostring(element)

Sorry, I didn't explain myself properly. I was using this:

local x, y, z = getElementPosition ( element )

However, x y & z are all 0.