Random Options on Monster Drops

KirieZ · May 6, 2019

As of Release v2019.05.05 you can now create groups of random options that may be assigned to items dropped by monsters.

In order to use it you must first create an Option drop group in db/option_drop_groups.conf, one group will set how each option slot is filled, the chance of it getting filled, etc. Each group has the following structure:

	<Group Name Constant>: (
		{ // Option Slot 1
			Rate: (int) chance of filling option slot 1 (100 = 1%)

			// Possible options for slot 1
			// min/max value : int, defaults to 0
			// chance : int, 100 = 1% if not set, will be 100%/number of possibiltiies
			OptionName: value
			// or
			OptionName: [min value, max value]
			// or
			OptionName: [min value, max value, chance]
			// ...  (as many as you want)
		},
		// ... (up to MAX_ITEM_OPTION)
	),

Details about this file may be found on Hercules' docs (doc/option_drop_group.md). This is an example group called MYGROUP:

MYGROUP: (
	{ /* Option Slot 1 */
		Rate: 10000 /* It has 100% of chance of being filled */

		/* This slot may have one of the following options: */
		WEAPON_ATTR_WIND: 5                 /* WEAPON_ATTR_WIND Lv5 (33.33%) */
		WEAPON_ATTR_GROUND: [2, 4]          /* WEAPON_ATTR_GROUND Lv 2~4 (33.33%) */
		WEAPON_ATTR_POISON: [1, 4, 8000]    /* WEAPON_ATTR_POISON Lv 1~4 (80%) */
	},
	{ /* Option Slot 2 */
		Rate: 5000 /* It has 50% of chance of being filled */

		/* If filled, may have one of the following options: */
		WEAPON_ATTR_WATER: 4     /* WEAPON_ATTR_WATER Lv4 (100%) */
	}
)

Once a group is defined, you can them assign it to monster drops in mob database by using a new syntax that works for both Drops and MvpDrops:

AegisName: (chance, "GROUP_NAME")

This will set that the item AegisName has chance chance of drop (like we already know from the format already in use), and, when dropped it will get random options as specified by the group GROUP_NAME.

For example:

Knife: (5000, "MYGROUP")

Will make "Knife" be dropped with a chance of 50%, and when dropped it will get options as defined by MYGROUP option group, in other words, the first slot will be filled with Wind, Ground or Poison option, and the second slot may or may not be filled with Water option.

This feature should work on any client that supports item random options.

IndieRO · May 7, 2019

wow this is really cool!

fiction · May 20, 2019

@KirieZ Hi, i'm trying to implement this but isn't working for me.Hi, i'm triying to implement this but isn't working for me.

I have the following in my option_drop_groups.conf:

option_drop_group_db: (
{

	ValkRandom: (
		{
			Rate: 5000
			CLASS_DAMAGE_BOSS_TARGET: 5,                // 5% más de daño a MvPS
			CLASS_DAMAGE_BOSS_TARGET: [6, 8]          // 6 ~ 8% más de daño a MvPS
			CLASS_DAMAGE_BOSS_TARGET: [9, 15, 1000]    // 9 ~ 15% más de daño a MvPS
		},
		{
			Rate: 2500
			CLASS_DAMAGE_BOSS_TARGET: 25,                // 25% más de daño a MvPS
		},

	),
	TEST2: (
		{
			Rate: 5000
			VAR_MAXHPPERCENT: 5,                // 5% MAXHP
			VAR_MAXHPPERCENT: [6, 8]          // 6 ~ 8% MAXHP
			VAR_MAXHPPERCENT: [9, 15, 1000]    // 9 ~ 15% MAXHP
		},
		{
			Rate: 2500
			RACE_TOLERACE_HUMAN: 25,                // 25% resistencia Demi-Human
		},

	)
}

)

Later, in the drops mob, i have the following:

{
	Id: 1751
	SpriteName: "RANDGRIS"
	Name: "Valkyrie Randgris"
	Lv: 99
	Hp: 3567200
	Sp: 0
	Exp: 2854900
	JExp: 3114520
	AttackRange: 3
	Attack: [5560, 9980]
	Def: 25
	Mdef: 42
	Stats: {
		Str: 100
		Agi: 120
		Vit: 30
		Int: 120
		Dex: 220
		Luk: 210
	}
	ViewRange: 10
	ChaseRange: 12
	Size: "Size_Large"
	Race: "RC_Angel"
	Element: ("Ele_Holy", 4)
	Mode: {
		CanMove: true
		Aggressive: true
		CastSensorIdle: true
		Boss: true
		CanAttack: true
		Detector: true
		CastSensorChase: true
		ChangeChase: true
		ChangeTargetMelee: true
		ChangeTargetChase: true
	}
	MoveSpeed: 100
	AttackDelay: 576
	AttackMotion: 576
	DamageMotion: 480
	MvpExp: 1427450
	MvpDrops: {
		Old_Violet_Box: 5500
		Old_Blue_Box: 5000
		Old_Card_Album: 2000
	}
	Drops: {
		Valhalla_Flower: 5000
		Valkyrie_Armor: (1600, "ValkRandom")
		Valkyrie_Manteau: (3000, "ValkRandom")
		Valkyrie_Shoes: (3000, "ValkRandom")
		Helm_: (5000, "ValkRandom")
		Bloody_Edge: 2500
		Randgris_Card: 1
	}
},

At the first time, the console show no errors, but when i implemented a custom map with ./map-server --load-plugin mapcache --map , the console give me the following error:

Zarbony · May 20, 2019

Umm i just checked the doc file and in my Opinion, you use one { and } more than you need, so the Option cant be allign.

Just remove it , and the script should watch like this:

option_drop_group_db: (

	ValkRandom: (
		{
			Rate: 5000
			CLASS_DAMAGE_BOSS_TARGET: 5,                // 5% más de daño a MvPS
			CLASS_DAMAGE_BOSS_TARGET: [6, 8]          // 6 ~ 8% más de daño a MvPS
			CLASS_DAMAGE_BOSS_TARGET: [9, 15, 1000]    // 9 ~ 15% más de daño a MvPS
		},
		{
			Rate: 2500
			CLASS_DAMAGE_BOSS_TARGET: 25,                // 25% más de daño a MvPS
		}
	),
	TEST2: (
		{
			Rate: 5000
			VAR_MAXHPPERCENT: 5,                // 5% MAXHP
			VAR_MAXHPPERCENT: [6, 8]          // 6 ~ 8% MAXHP
			VAR_MAXHPPERCENT: [9, 15, 1000]    // 9 ~ 15% MAXHP
		},
		{
			Rate: 2500
			RACE_TOLERACE_HUMAN: 25,                // 25% resistencia Demi-Human
		}
	)

)

I think this will work, but i havent tested it yet...

I hope it will do its job now

Edited May 20, 2019 by Zarbony

fiction · May 20, 2019

Hi @Zarbony, thank you for reply.

The syntax is

option_drop_group_db: (
{
/**************************************************************************
 ************* Entry structure ********************************************
 **************************************************************************
	<Group Name Constant>: (
		{ // Option Slot 1
			Rate: (int) chance of filling option slot 1 (100 = 1%)

			// Possible options for slot 1
			// min/max value : int, defaults to 0
			// chance : int, 100 = 1% if not set, will be 100%/number of possibiltiies
			OptionName: value
			// or
			OptionName: [min value, max value]
			// or
			OptionName: [min value, max value, chance]
			// ...  (as many as you want)
		},
		// ... (up to MAX_ITEM_OPTION)
	),
 )
 	}

So, if i believe to this syntax, need to put an "}" at the end.

Now that i pay more attention that i wrote, i think i put an extra comma here:

VAR_MAXHPPERCENT: 5,

Gonna test it at home

@edit:

Ok, i tested in my home with the same example, and isn't working for me.

//================= Hercules Database =====================================
//=       _   _                     _
//=      | | | |                   | |
//=      | |_| | ___ _ __ ___ _   _| | ___  ___
//=      |  _  |/ _ \ '__/ __| | | | |/ _ \/ __|
//=      | | | |  __/ | | (__| |_| | |  __/\__ \
//=      \_| |_/\___|_|  \___|\__,_|_|\___||___/
//================= License ===============================================
//= This file is part of Hercules.
//= http://herc.ws - http://github.com/HerculesWS/Hercules
//=
//= Copyright (C) 2018  Hercules Dev Team
//=
//= Hercules is free software: you can redistribute it and/or modify
//= it under the terms of the GNU General Public License as published by
//= the Free Software Foundation, either version 3 of the License, or
//= (at your option) any later version.
//=
//= This program is distributed in the hope that it will be useful,
//= but WITHOUT ANY WARRANTY; without even the implied warranty of
//= MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//= GNU General Public License for more details.
//=
//= You should have received a copy of the GNU General Public License
//= along with this program.  If not, see <http://www.gnu.org/licenses/>.
//=========================================================================
//= Random Option Drop Group Database
//=========================================================================

option_drop_group_db: (
{
/**************************************************************************
 ************* Entry structure ********************************************
 **************************************************************************
	<Group Name Constant>: (
		{ // Option Slot 1
			Rate: (int) chance of filling option slot 1 (100 = 1%)

			// Possible options for slot 1
			// min/max value : int, defaults to 0
			// chance : int, 100 = 1% if not set, will be 100%/number of possibiltiies
			OptionName: value
			// or
			OptionName: [min value, max value]
			// or
			OptionName: [min value, max value, chance]
			// ...  (as many as you want)
		},
		// ... (up to MAX_ITEM_OPTION)
	),
**************************************************************************/
MYITEM: (
	{ // Option Slot 1
		Rate: 10000 // It has 100% of chance of being filled

		// This slot may have one of the following options:
		WEAPON_ATTR_WIND: 5,                // WEAPON_ATTR_WIND Lv5 (33.33%)
		WEAPON_ATTR_GROUND: [2, 4]          // WEAPON_ATTR_GROUND Lv 2~4 (33.33%)
		WEAPON_ATTR_POISON: [1, 4, 8000]    // WEAPON_ATTR_POISON Lv 1~4 (80%)
	},
	{ // Option Slot 2
		Rate: 5000 // It has 50% of chance of being filled

		// If filled, may have one of the following options:
		WEAPON_ATTR_WATER: 4     // WEAPON_ATTR_WATER Lv4 (100%)
	},
),
		}
			)
      
      
      {
	Id: 1002
	SpriteName: "PORING"
	Name: "Poring"
	Lv: 1
	Hp: 50
	Sp: 0
	Exp: 2
	JExp: 1
	AttackRange: 1
	Attack: [7, 10]
	Def: 0
	Mdef: 5
	Stats: {
		Str: 1
		Agi: 1
		Vit: 1
		Int: 0
		Dex: 6
		Luk: 30
	}
	ViewRange: 10
	ChaseRange: 12
	Size: "Size_Medium"
	Race: "RC_Plant"
	Element: ("Ele_Water", 1)
	Mode: {
		CanMove: true
		Looter: true
		CanAttack: true
	}
	MoveSpeed: 400
	AttackDelay: 1872
	AttackMotion: 672
	DamageMotion: 480
	MvpExp: 0
	Drops: {
		Jellopy: 7000
		Knife_: (100,"MYITEM")
		Sticky_Mucus: 400
		Apple: 1000
		Empty_Bottle: 1500
		Apple: 150
		Unripe_Apple: 20
		Poring_Card: 1
	}
},

Edited May 21, 2019 by fiction

KirieZ · May 23, 2019

Sorry for the delayed answer, I can't use a computer at moment. This last post syntax does seem to be right. You can try removing the comma after the group block, but I don't think this is the cause... I will check once I can use my PC.

fiction · May 23, 2019

Hi @KirieZ thank you for answer.
I removed the comma, but isn't fixed the problem.

Note that the console isn't showing any warning o error, but when i apply some map in the mapcache, the error appear.

[Error]: mob_read_db_optdrops: Invalid option drop group "MYITEM_M" on item "Knife_" in monster 1002, does this group really exists? Skipping...

option_drop_group_db: (
{
/**************************************************************************
 ************* Entry structure ********************************************
 **************************************************************************
	<Group Name Constant>: (
		{ // Option Slot 1
			Rate: (int) chance of filling option slot 1 (100 = 1%)

			// Possible options for slot 1
			// min/max value : int, defaults to 0
			// chance : int, 100 = 1% if not set, will be 100%/number of possibiltiies
			OptionName: value
			// or
			OptionName: [min value, max value]
			// or
			OptionName: [min value, max value, chance]
			// ...  (as many as you want)
		},
		// ... (up to MAX_ITEM_OPTION)
	),
**************************************************************************/
MYITEM_M: (
	{ // Option Slot 1
		Rate: 10000 // It has 100% of chance of being filled

		// This slot may have one of the following options:
		WEAPON_ATTR_WIND: 5,                // WEAPON_ATTR_WIND Lv5 (33.33%)
		WEAPON_ATTR_GROUND: [2, 4]          // WEAPON_ATTR_GROUND Lv 2~4 (33.33%)
		WEAPON_ATTR_POISON: [1, 4, 8000]    // WEAPON_ATTR_POISON Lv 1~4 (80%)
	},
	{ // Option Slot 2
		Rate: 5000 // It has 50% of chance of being filled

		// If filled, may have one of the following options:
		WEAPON_ATTR_WATER: 4     // WEAPON_ATTR_WATER Lv4 (100%)
	},
)

		}
			)

{
	Id: 1002
	SpriteName: "PORING"
	Name: "Poring"
	Lv: 1
	Hp: 50
	Sp: 0
	Exp: 2
	JExp: 1
	AttackRange: 1
	Attack: [7, 10]
	Def: 0
	Mdef: 5
	Stats: {
		Str: 1
		Agi: 1
		Vit: 1
		Int: 0
		Dex: 6
		Luk: 30
	}
	ViewRange: 10
	ChaseRange: 12
	Size: "Size_Medium"
	Race: "RC_Plant"
	Element: ("Ele_Water", 1)
	Mode: {
		CanMove: true
		Looter: true
		CanAttack: true
	}
	MoveSpeed: 400
	AttackDelay: 1872
	AttackMotion: 672
	DamageMotion: 480
	MvpExp: 0
	Drops: {
		Jellopy: 7000
		Knife_: (100, "MYITEM_M")
		Sticky_Mucus: 400
		Apple: 1000
		Empty_Bottle: 1500
		Apple: 150
		Unripe_Apple: 20
		Poring_Card: 1
	}
},

fiction · May 26, 2019

Up.

This system isn't working 😕

KirieZ · May 29, 2019

@fiction

I finally got to my pc and could test it...

The only issue I found is that when I run mapcache plugin it shows the error that it haven't found the group, but mapcache plugin kills map-server after adding the map. After the map is added and I properly start the server (this time without map-cache plugin), I don't get any errors and the drops does work. Tried on both pre-re and re.

Is this the issue you found?

I've copy pasted your example and it also works (diff attached).

Edit: It probably doesn't matter but in my test I've used this "vip" map: https://herc.ws/board/files/file/73-vip-room-indoor/

random_opt_drop_groups.diff

Edited May 29, 2019 by KirieZ

May 29, 2019

probably missing options because chance too low?

fiction · May 29, 2019

i tried up the rate until 10,000 but the result is the same

fiction · May 29, 2019

Ok... the problem was me . I used a npc to identify all the time the items, and i forget that the npc delete the item in first place.

i made a fool of myself 😢

May 29, 2019

this is still issue. Issue with existing scripts

aabarreto · February 2, 2021

Is this working properly now?

Caiba · February 25, 2021

On 2/2/2021 at 3:05 PM, aabarreto said:

Is this working properly now?

Want to know too, because the same issue occurs trying to slot option items. When u slot the item, the options disappear...

KirieZ · April 17, 2023

On 2/2/2021 at 3:05 PM, aabarreto said:

Is this working properly now?

Very late reply, but: The previous messages ended up not being an issue in the option system, but in the script being used. (more on that after the next quote)

On 2/25/2021 at 5:20 PM, Caiba said:

Want to know too, because the same issue occurs trying to slot option items. When u slot the item, the options disappear...

Very late reply, but: Are you sure the issue is in the random option system and not in what you are trying to do? The previous messages ended up not being an issue in the option system, but in the script being used.

It is important to note that a combination of delitem + getitem does NOT carry options by itself, and this is working as intended. If you want to carry options when deleting an item and creating a new one, you have to do it yourself.

If I understand your message, the issue you are experiencing is that:

1. you have Knife [3] with options

2. you want to "slot it" so you get Knife [4] with options

but when you try to do that, you get Knife[4] with 0 options (so options were lost).

Without information on how the script was coded, I can only assume it is like the official slotting NPC where it does something like:

// Deletes Knife[3] -- the item you originally had
delitem(Knife, 1);

// Adds Knife[4] -- the sloted item
getitem(Knife_, 1);

In this case, the options does NOT get carried to Knife_, and this is working as intended, because you are deleting the previous item and creating a brand new one -- the script engine doesn't know you were simply "upgrading" the item, they will even get completely different Item UIDs.

The issue fiction mentioned before was exactly this case, a script was deleting the unidentified (and optioned) item and creating a new one (identified, but without options).

In order to carry the options to the new item, you will need to use script commands to get the options of the old item before delete and them set the options in the new one. See "getequipoption" and "setequipoption" script commands for some leads.

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