npcs running away super fast

[spider661]

i just started a new server and was playing around with a few friends i have not changed nothing in the db about run speeds but when the npcs get low on like they run like they should but they run so freaking fast you cant even see where they go half the time.

i searched the forums but cant find anything on this so i figured i would post and see whats up is it something with my server or is it a known bug or anyone have this problem and fixed it?

i checked the run speeds and in the zones i have seen it in all the npcs run speeds are set to like 1.25 and so on..

any help/info wold be helpful.

[xxarthurxx]

I have this problem on my server as well, it seems like they take off ay lightning speed but it you hit them once they slow down to normal run speed. I have yet to fiddle with the run speed values to try and fix the problem but maybe its a fix that must be tampered with code side.

[trevius]

Make sure you added these into your rule_values table:

insert into rule_values values (0, Combat:EnableFearPathing, true);
insert into rule_values values (0, Combat:FleeHPRatio, 20);

From testing, I have found that fear actually works really well. At least with the new maps. But fleeing still needs some work. With it set to 20 in the rules, it seemed to work ok mostly, but I tried setting it to 10 and mobs were warping all over and training like crazy. Until it is tuned a bit more, you probably want to disable it by setting fleeing to -1. That will solve your problems for now. You can still leave fear enabled though if you want it.

[Derision]

I'm at work, so can't test this, but the issue appears to be the logic in
fearpath.cpp Mob::GetFearSpeed().

There is a hardcoded constant in the source, FLEE_HP_MINSPEED, which is set to 10.
The purpose of this is to put a lower limit on the mob's flee speed, i.e. once the
Mobs HP gets down to 10%, it won't slow down any further.

Assuming an unsnared mob with a default runspeed of 1.25 and rule FleeHPRatio
set to 25, FearSpeed will return a flee speed of 0.25 at 25% health.

Because of the logic, as the mobs HP decreases from 25% down to 10%, it will actually
move faster, with a speed of 1.25 when it's HP is exactly 10%.
Below 10% it will run at 0.25 (again, assuming unsnared).

The following drop-in replacement will give you a linear speed decrease, starting at 0.25
at 25% health, down to 0.10 at 10% and below.

float Mob::GetFearSpeed() {
    if(flee_mode) {
        //we know ratio < FLEE_HP_RATIO
        float speed = GetRunspeed();
        float ratio = GetHPRatio();

        if(ratio < FLEE_HP_MINSPEED) 
                ratio = FLEE_HP_MINSPEED;

        speed = speed * 0.8 * ratio / 100;
 
        return(speed);
    }
    return(GetRunspeed());
}

If you want them to move faster or slower in relation to HP%, fiddle with the speed = speed * 0.8 * ratio / 100; statement.

As I said, I can't test it in-game right now, but it works as I described 'in simulation'.

[Angelox]

Derision: Your code fix is working fine - Now they run away the way they should.
Here are some other "flee features" I remember from live;
- if the players character was low on health ( I think was 25% or less?) then the NPC stayed and duked it out tell death.
- if there were more than on NPC in the brawl, only the last one standing would flee (2 NPCs would stay and fight).

[Derision]

Originally Posted by Angelox

- if the players character was low on health ( I think was 25% or less?) then the NPC stayed and duked it out tell death.
- if there were more than on NPC in the brawl, only the last one standing would flee (2 NPCs would stay and fight).

There is code already in that checks if the health of the player at the top of the hatelist is <20%, in which case the mob won't run.

Regarding the second point, would it be a simple matter of checking if there was another mob who hated the player and not running if that was the case, or, does the the other mob need to be within aggro range.

E.g. if I pull two mobs, fear one away, get the remaining one down to flee speed. Should the dying mob flee if the feared mob is 'out of range'.

Also, do the mobs need to be on the same faction for this mechanic to kick in ?

Does Con come into it ? A post over at PEQ suggests it does:

http://www.projecteq.net/phpBB2/view...highlight=flee


I'm willing to have a stab at this if no-one else is working on it, and if we can agree the exact mechanics (and it's not too intensive to calculate ).

[Derision]

Originally Posted by Angelox

- if there were more than on NPC in the brawl, only the last one standing would flee (2 NPCs would stay and fight).

I got something working like this:

When the mob is deciding whether to flee, it looks at the person at the top of it's hate list.

If there are any mobs in that person's hate list which:

Do not con green
Are not feared or fleeing.
Are within aggro range of the player (this is in lieu of checking if they are in melee combat with him, which I don't see can be easily done).

Then the mob won't run. I think I need to add more checks, e.g. don't count mezzed mobs.

As has been mentioned, there is already a check to see if the mob is totally immune to fleeing.

I'll do some more tweaking/testing and add a rule to disable it and probably post it at the weekend.