Description: by Nefarius
Categories: Tutorials (1.09x)
In this tutorial you will learn how to create special skills that are only
available from charged items, without wasting character skills.
Knowledge about monster AIs/AI Swapping and Skills.txt
Base Skill Swapping / Hex Editing
What you will need:
General Description of what we will do:
Step 1 - Remove the Fire Hit skill from monsters.
Step 2 - Making the Fire Hit skill useable by characters.
Step 3 - Swapping the Fire Hit skill with another skill (of your choice in
Step 4 - Creating a Unique Item and attaching the new skill to it.
Step 1 - Remove the Fire Hit skill from monsters:
For this step we only need monstats.txt
To start scroll down to the Sand Raider rows (NUM 31-35, ID 29-33)
Change BASEID from 7 to 28, this will make the Sand Raider monsters use the
Thorned Hulk AI.
Now scroll over to the AIPARAM# columns, these columns control various AI
parameters determined by the BASEID.
AIPARAM1 controls the chance to attack (in chase of the Thorned Hulk)
AIPARAM2 seams to control the chance to use the frenzy attack.
AIPARAM3 well, I personally don’t have any clue about this one, I usually set
it to 25.
AIPARAM4 seams to control the chance to use attack 2. (MODE A2)
Set these parameters to something that suites you best.
Next change ELMODE to 5, in order for them to get the same “Beating Bonus”
as the Thorned Hulks get. (This controls the MODE in which it is applied)
Set ELTYPE to 9, which is STUN.
ELPCT controls the percentage to apply this effect, set it to something around
75 or 100, as you want.
ELMIN / ELMAX control the amount of damage to do, since we are using stun,
change these to 0.
Finally ELDUR controls the effect length, in this case, we are using STUN and
hence it controls the stun duration in frames (25 = 1 Second).
Now after this is done scroll over to the SKILL1, SKILL1SEQ and SKILL1LVL
columns, these control the skill applied thru the AI, it is VERY important to
never give a monster skills that aren’t defined in its AI code, it will crash
the game. (or may simply do nothing at all)
Change SKILL1 from 156 to 215, this is the ID of the Hulk Frenzy. (156 = Fire
Set SKILL1SEQ to 0. After this you can save the file, you have just successfully
swapped a AI and removed FIRE HIT from monsters. You may need to do some stat
adjustments, but that’s not what this tutorial is about.
Step 2 - Making the Fire Hit skill useable by characters:
Open up skills.txt and go down to row 158 (ID 156)
Change CLASSREQ and MONSTER to 0, this will make it useable be characters in
general. (without crashing)
Next change ANIM to “cast”, this will make the game use the Casting
animation if a character uses this skill.
After this change ITEMEFFECT to 1, this will allow the game to spawn this skill
on items without crashing. Save it and lets go on.
Step 3 - Swapping the Skill:
Now the harder part (not really) has arrived.
Load up d2game.dll in a hex editor (XVI32 or HEX WORKSHOP for example)
Go to offset EEAD8, here you will see the following hex string:
The first DWORD deals with the starting function of the skill, the second one
deals with the ending function.
We will replace this skill with the “IMPREGNATE” skill of the act 5 putrid
First change the first DWORD to 00000000 so that it looks like this:
Basically, the IMPREGNATE skill doesn’t have a starting function.
Now however we will change DWORD two to the ending function of the IMPREGNATE
After this is done save D2GAME.DLL (NOTE! Make backups at all cost if you are
not familiar with hex editing, you should make backups anyway, but specially in
Now open up D2CLIENT.DLL, go to offset CE898 you will see the following hex
00000000 FFFFFFFF 00000000 FFFF0000 200DAC6F
The first DWORD controls the sound played durning the casting animation.
The second DWORD controls the graphical overlay used for this skill.
The third DWORD controls the starting function of the skill. (Graphical)
The fourth DWORD controls the missile attached to this skill. (Graphically,
don’t use for non-expansion monsters!)
The fifth DWORD controls the ending function of the skill. (Graphical)
Because impregnate doesn’t have a ending or starting function (in graphical
terms!) you will need to change it to look as the string below:
00000000 FFFFFFFF 00000000 FFFF0000 00000000
But this is kind of dull and boring isn’t it, so we will spice it up a bit.
Change the sound DWORD to 90090000 this is the casting sound for bone armor.
Now our hex string should look like this:
90090000 FFFFFFFF 00000000 FFFF0000 00000000
Now change the overlay DWORD to C2000000, this will make it use the Druids
Lesser fire skill casting overlay (C3000000 would be Greater fire skill).
It should now look like this:
90090000 C2000000 00000000 FFFF0000 00000000
Now open up monstats.txt, and set the ALIGH column of the pain worm type
monsters to 1, in order to make the monsters that spawn due to impregnate attack
your enemies (instead of attacking you) For a temporary solution for the
original putrid defilers set their spawnable column to 1, you can follow the
above steps to swap the original IMPREGNATE skill with something like Bloodlust,
this will make the putrid defilers cast Bloodlust on monsters.
Step 4 - Attaching the Skill to an Item:
Finally the last part has arrive, In it we will attach the new skill as charges
to an item:
First open up uniqueitems.txt and add a new unique item, I wont explain this
process because this is an advanced tutorial. Add the “charged” modifier to
it and set the PARAM column to 156, this will make it use the FIRE HIT skill (aka
IMPREGNATE). Next set the number of charges to something like 100 and leave the
skill level at 1. Generate the unique item and load the game. ENJOY!!!
*Note as mentioned above, you should make the original putrid defilers cast
something else, because they will just create allies for you now
*The charges will show as Charges of ATTACK, this cannot be fixed at the moment,
but it will indeed use your skill.
Link to this article: Select all
[url=https://d2mods.info/forum/kb/viewarticle?a=209&sid=52aba3ebf90c23a5db726e7781dca3fd]Knowledge Base - Creating Charges-Only Skills[/url]