Steps for checking if an event is being fired:

1. Place this line of code in your event method:

Log.info("check");

2. Meet all the requirements in-game for the event to fire (i.e. be attacked by any other entity).

3. If [INFO] check doesn't show up on the console, you did NOT register your event.

 

Or just simply use the debugger  

Edited December 29, 20177 yr by Differentiation

2 minutes ago, Yario said:

@DifferentiationIt's working wiht you in multiplayer with client-side mod only ?

Please clarify.

2 minutes ago, Yario said:

@DifferentiationIt's working wiht you in multiplayer with client-side mod only ?

Do you mean you want your mod only to run on Singleplayer and not on Multiplayer Servers?

Did the event fired with you in multiplayer in a server that havn't the mod on it?

Just now, Yario said:

Did the event fired with you in multiplayer in a server that havn't the mod on it?

I don't understand what you are trying to say

Server - no mod

Client - has the mod subscribing to living attack event

Client with mod connects to client without mod, will client receive the event

 

I believe that is what the OP is asking.

"The LivingAttackEvent is a Forge event that fires whenever an EntityLivingBase attacks another EntityLivingBase"

@Ugdharyou're true

1 minute ago, Ugdhar said:

Server - no mod

 

Well what do you mean "server - no mod?"

OH!

I see.

If the server does not have the mod installed, nothing will work on the clients. The event in this case will NOT be fired.

Edited December 29, 20177 yr by Differentiation

Use the mod on client-side only and tell me if the event is fired

The LivingAttackEvent is fired by the server. If the mod is not present in the server, this event will not fire.

1 minute ago, Yario said:

Use the mod on client-side only and tell me if the event is fired

It won't fire. This event is fired by the server-side.

If you do:

@Override
public void onAttack(LivingAttackEvent event)
{
  if (event.getEntity().worldObj.isRemote)
  {
    ...
  }
}

nothing will happen...

I know I want to be able to have an event when "thePlayer" got hitten by another entity and be able to do something like:
event.getEntity() all of this client-side.

Just now, Yario said:

all of this client-side.

What do you mean?

You would have to send packets to the EntityPlayerMP's client. Simple

I'm not quite understanding what you're trying to ask.

LivingAttackEvent will fire when you're in a Singleplayer world by yourself and Multiplayer server.

Edited December 29, 20177 yr by Differentiation

@DifferentiationPlease read all the post and try to help me again because you are not helping me and you don't understand the problem.
If you cannot understand please stop speak in this topic

5 minutes ago, Yario said:

@DifferentiationPlease read all the post and try to help me again because you are not helping me and you don't understand the problem.
If you cannot understand please stop speak in this topic

	@SubscribeEvent
	public void onAttack(LivingAttackEvent event)
	{
		if (event.getEntity() instanceof EntityPlayer)
		{
			Entity attackerIn = event.getSource().getSourceOfDamage(); // this is your attacker instance, the entity attacking the target		
			EntityPlayer targetIn = (EntityPlayer) event.getEntity(); // this is your target instance, the entity being attacked by the attacker
			/*
             		* Here, you do whatever you want with your attacker and target.
             		* You can make the target set on flame, add potion effects, etc.
             		* Make sure you properly handle sides
             		*/
		}
	}

It's as simple as that, can't get any simpler, my friend, if you want lines to fire on the client, then send packets.

Edited December 29, 20177 yr by Differentiation

Who send packets to who ?

Basically, the client does not know about damage unless the server tells it, so as far as I can tell, you cannot do what you are looking to do with only a client side mod.

@UgdharThe client cannot know who attacked himself ?

I succefully get a DamageSource of the attack but

DamageSource::getEntity()

always return null.
I saw that I needed to use EntityDamageSource but how can I convert DamageSource to EntityDamageSource ?

2 minutes ago, Yario said:

The client cannot know who attacked himself ?

I honestly don't know, I haven't tried doing anything like this myself. I was just explaining what I believe Differentiation was trying to say to you since you said you didn't understand.

Yes but Differentaiton didn't understand my problem