Some trouble with a Custom Event. Any ideas?

Ozkar619 · May 2013

Hi, i'm having some trouble trying to implement a custom event.

Here i coded a little a situation that is exactly similar to mine but much less complicated to understand, so we can get straight to the problem:

[code]
ClassA = Core.class(EventDispatcher)

function ClassA:init()
self.name = "Oscar"
end

ClassB = Core.class(EventDispatcher)

function ClassB:init()
self.a = ClassA.new()
end

function ClassB:SayHi(event)
print("--With Event--")
print("Hello",event.name)
print("--With Self--")
print("Hello",self.a.name)
end

function ClassB:run()
self:addEventListener("myevent",self.SayHi,self)
self:dispatchEvent(Event.new("myevent"))
end

local b = ClassB.new()

b:run()
[/code]

And here is the result it throws:

--With Event--
Hello nil
--With Self--
Hello Oscar

Why am i not getting the right event arguments?

Thanks in advance!

OZApps · May 2013

@Ozkar619,
The event created by using Event.new does not create an event with the name as you specified, instead it is the type of event that you have created.

To get that, you need to query the

__type

which would provide you with what you are after.

OZApps · May 2013

... slightly different than how it is with C*SDK ...

sslivka · May 2013

@Ozkar619,
[lua]
function ClassB:run()
self:addEventListener("myevent",self.SayHi,self)
local myE = Event.new("myevent")
myE.name = "MyEvent"
self:dispatchEvent(myE)
end
[/lua]

sslivka · May 2013

@Ozkar619,
[lua]
function ClassB:SayHi(event)
print("--With Event--")
print("Hello",event.name)
print("--With Self--")
print("Hello",self.a.name)

for i,v in pairs(event) do
print(i, v)
end
end
[/lua]

results:
Uploading finished.
--With Event--
Hello MyEvent
--With Self--
Hello Oscar
__target table: 0763A858
__type myevent
__userdata userdata: 0763B0E8
name MyEvent

Ozkar619 · May 2013

Thanks a lot guys

that will do.

Mells · May 2013

@Ozkar619
This should work :

local target = event:getTarget()
print (target.name) -- "Oscar"
 
local eventName = event:getType()
print (eventName) -- "myEvent"

Avoid this :

self:addEventListener("myevent",self.SayHi,self)
local myE = Event.new("myevent")
myE.name = "MyEvent"

instead :

local eventName = "myEvent"
self:addEventListener(eventName,self.SayHi,self)
local myE = Event.new(eventName)

You want to avoid typing errors as much as possible..

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