I'm currently playing with my 3 friends, but unfortunately there is always that one guy that is rushing forward and does everything on his own. Of course we always tell him to wait for us...

So I want to force him to coop. I read this about "higher difficulty in MP":

It does, but you all need to be within a proximity to each other for it to kick in. That way if people on the same server are spread out doing different things, it doesn't inhibit them from soloing if they wish.

http://forums.runicgames.com/discussion/comment/315474/#Comment_315474

So is it possible to disable this? Or even revert the effect so all players get even weaker while soloing?

edit:
Or do you have other ideas to "not increase difficulty while we are in group" but make soloing harder/impossible. Maybe adding a passive aura to every player that stack up to make coop easier (and then increasing difficulty with other mods) ?

Thank you
Digging for 4 hours now through the GUTS thing... The "documentation" does not help that much.. are there tutorials esepcially for editign/creating a skill?

I think I already found out a lot. The Skill for example defines range, targets and requirements. The affix is a collection of different effects and you set the values for those effects. And Effects are the final thing that does something like changing HP or whatever.

I also saw that you can add Afixes/Effects to the Units/Player and thought I could add an aura this way. But there seems to be no way to define range and targets (since this is done in skill). So even if I put eg the "StandardBattleAura" to the affixes (which does not show ingame for whatever reason) it still has no range and targets.

So am I right the the only way of adding an aura that e.g increases max HP for every ally in range, has to be a new skill and must be chosen by the player? Or is there a way to make such a skill always active in the background?
Btw I also tried to add a Embermage skill to the berserker, but it was not visible ingame, no clue why.

@Aherin thank you
But "a UI that is always visible" sounds strange? What is the purpose of the UI? And why I can't hide it?

Ok so I'll upload some pics and talk you through it if you like. Each pic should help to explain what I mean.

First step is to open up guts, select the "Scratch Pad" tab and add in all your UI elements (Screenshot 1).
Right click on the white area on the left and add in a Logic Group (It has an icon to the left of it)
Underneath the Logic Group item is the "UI Menu" option. Mouseover then add a Menu Definition.
Then right click again and mouseover the "Logic" option. Add in a timer and Affix Applicator.

Now you've got your UI items you'll need to config their properties.
So..
Timer
LOOP COUNT:1
LOOPS FOREVER:True
MAXTIME:-1
TIME:1

Affix Applicator (Affix in my screenshot)
AFFIX: (type the name of your affix here)
APPLY ON PLAYERS: True
*Leave the rest as is*

Menu Definition (This is pretty important so I'll screenshot the properties)
Main things to check are
ALWAYS VISIBLE: True
PINNED:True
MENU NAME: (Give it your own custom name)
*Double check everything else in screenshot 2*

Now.. Last thing is to set up the Logic Group (Screenshot 3). If you select the Logic Group you'll see that a hammer and wrench icon appears. Right click it and the Logic Editor will pop up. Now drag and drop the Timer and Affix from the left column into it.

In the Logic Editor, left click the Timer and check the "Activated" tickbox in its Outputs section.
Next left click the Affix Applicator and check the "Apply Affix" tickbox in its Inputs section.
(Every UI item has multiple things it can do in the Logic Editor. It's fun to dig around and see what they can do
Drag a line from the green square of "Activated" to the blue circle of "Apply Affix".

Now you've made it so that the affix you've selected will constantly apply the affix to players as long as the timer continues to loop, which it will do infinitely.

That should do it for you. One thing you can do to the affix while testing is to add a visual effect to it so you know if it's being applied properly. If you open up the affix you want to apply and type in "Poisoned" or "CHAMPIONGLOW" in the "UnitTheme" section for example, they will show up (as particle effects only) whenever the affix is active. A good way to check if it's working

Oh but you can make an affix that does lots of things. You can make the affix cast a passive skill which could be your aura.

@Phanjam Cheers man, though I can't take credit for the technique. I learnt it from the UI guru doudley My Block Indicator Plus mod and **** Lite both use the technique.

@FabSerp **** Lite has an affix with a passive skill that is applied indefinitely to the player, but it only activates on player death (CAST SKILL ON DEATH I think it uses). When the player dies, all players in radius are fully healed. I used the berseker howl skill and made it heal instead. I guess I'm telling you this to let you know that the idea of buffing players who are near each other is very possible!

Try the script, it still works for me

@FabSerp I can send you a google drive link if you like. The mod files need a fair bit of clean up to make sense of them to be honest. The mod finally worked after many failed attempts, the evidence of which remain!