[Earendil]

Description:

• Allows survivors to have 1 or more pets following them.
• Pets are chargers and jockeys, no damage between pets and survivors will happen.
• Pets will follow their owner and can protect him against other special infected.
• When a survivor dies, its pet can be automatically deleted, transfer to another survivor or go wild and become a normal zombie.

Commands:

• sm_pet <jockey|charger|(null)>: Spawns a zombie pet that will follow the survivor. If argument is empty, a random class will be spawned as pet.
• sm_pet remove: Removes all pets associated to their survivor.

Source Code:

• You can watch or download plugin sourcecode via this repository.
• You may find some developement branches to test new features, but plugin errors may be expected and plugin functionallity may not work on Windows servers.

Possible issues

• Bots sometimes could not aim correctly other zombies. This plugin detours some bot behaviour functions to force survivor bots to ignore the infected pets, but it makes that survivor bots sometimes take more time than usual until they detect a zombie to attack.
• Pets are true zombies, so they will be recognized by the director like that, consider using a zombie spawn plugin to prevent blocking natural zombies from spawning, like ZSpawn

.

Installation:

• Place l4d2_perks.sp in addons/sourcemod/plugins folder.
• Place l4d2_pets.txt in addons/sourcemod/gamedata folder.

Dependences:

• Left 4 DHooks Direct by Silvers.
• Dynamic Hooks with Detour Support by Peace-Maker or SM 1.11.

ConVars

Spoiler

PHP Code:

// Allow pets to attack other SI.
// 0 = Don't allow.
// 1 = Only if SI that attack its owner.
// 2 = The closest SI to its owner.
// -
// Default: "2"
// Minimum: "0.000000"
// Maximum: "1.000000"
l4d2_pets_attack "2"

// 1 = Plugin On. 0 = Plugin Off.
// -
// Default: "1"
// Minimum: "0.000000"
// Maximum: "1.000000"
l4d2_pets_enable "1"

// Flags required for a player to create a pet, empty to allow everyone.
// -
// Default: ""
l4d2_pets_flags ""

// Enable plugin in these gamemodes, separated by commas, no spaces.
// -
// Default: ""
l4d2_pets_gamemodes ""

// Maximum amount of pets allowed in game.
// -
// Default: "4"
// Minimum: "0.000000"
// Maximum: "16.000000"
l4d2_pets_global_limit "4"

// Opacity of the pet.
// -
// Default: "235"
// Minimum: "0.000000"
// Maximum: "255.000000"
l4d2_pets_opacity "235"

// What will happen to the pet if its owner dies?
// 0 = Kill pet.
// 1 = Transfer to random survivor.
// 2 = Make it wild.
// -
// Default: "0"
// Minimum: "0.000000"
// Maximum: "2.000000"
l4d2_pets_ownerdeath_action "0"

// Zombie sound pitch, default pitch: 100.
// -
// Default: "150"
// Minimum: "0.000000"
// Maximum: "255.000000"
l4d2_pets_pitch "150"

// Maximum amount of pets each player can have.
// -
// Default: "1"
// Minimum: "0.000000"
// Maximum: "16.000000"
l4d2_pets_player_limit "1"

// (JOCKEYS ONLY) Scale pets by this amount
// -
// Default: "0.55"
// Minimum: "0.100000"
// Maximum: "5.000000"
l4d2_pets_size "0.55"

// Radius around the survivor to allow pets to attack enemy SI.
// -
// Default: "400"
// Minimum: "0.000000"
// Maximum: "2000.000000"
l4d2_pets_target_dist "400" 


Special thanks

• Silvers, for helping with some strange signatures and for 1.1.2 update.

To do

• More special infected types as pets
• More effects on pets.
• Prevent signature break on game update (just watch the signatures...).
• L4D1 Support if signatures available.
• More functionallity, I accept suggestions..

Changelog

Spoiler

• 1.1.2 (08-Dec-2022)

  - Changed detouring method & sig fixed (by Silvers).
  - Fix minor code erros.

• 1.1.1 (22-Jun-2022)[INDENT]- Fixed l4d2_pets_attack ConVar limits.
• 1.1 (22-Jun-2022)

  - Players now can have also a Jockey as a pet.
  - Pets will attempt to attack other special infected.
  - Improved pet behaviour.
  - Pet noise pitch can be changed.
  - New ConVars (l4d2_pets_pitch, l4d2_pets_attack, l4d2_pets_dmg_scale, l4d2_pets_target_dist, l4d2_pets_size).

• 1.0.1 (21-Jan-2022)

  - Pets now will attempt to break the door if they are far from their owners.

• 1.0 (21-Jan-2022)

  - First release.

[L4D2Noob]

They should learn to pass through doors...)

https://www.youtube.com/watch?v=1CvV...=RYANCOOLROUND

[thewintersoldier97]

Great idea! May I suggest you reduce the size of the pet for better clarification and make it easy distinguishable with other special infected

[Earendil]

Originally Posted by L4D2Noob They should learn to pass through doors...) https://www.youtube.com/watch?v=1CvV...=RYANCOOLROUND

As I said, pets do nothing, only follow survivor. I blocked primary and secondary attacks to prevent charger pet to punch or charge their owner, I will try to find the game functions that tells zombie when to attack to check if its going to hit a door or a survivor, and block first case.

[Earendil]

Originally Posted by thewintersoldier97 Great idea! May I suggest you reduce the size of the pet for better clarification and make it easy distinguishable with other special infected

I have been testing it, I can only resize jockeys, so I can add minijockeys as pets (less annoying than a big charger).

Originally Posted by L4D2Noob They should learn to pass through doors...)

Done, now they will slowly attempt to break a door if they are not close to their owners but will not attack survivors, sometimes a survivor could be punched if its near of a pet attempting to break the door.

[L4D2Noob]

Originally Posted by Earendil Done, now they will slowly attempt to break a door if they are not close to their owners but will not attack survivors, sometimes a survivor could be punched if its near of a pet attempting to break the door.

And it works great!
https://www.youtube.com/watch?v=Yob4RisUwD8

[KadabraZz]

I found this video last year, but I didn't expect to find something like this so soon, very good now i can have fun with my pet =)
https://youtu.be/3BZ182CXYeg

[eyal282]

Ideas:

1. Pet will punch commons.

2. Pet will charge you if you got jockeyed, smoked or charged to release you.


If you hook block on the Left4Dhook "CarryStart" it will crash into you and stumble itself.

[eyal282]

Originally Posted by Earendil I have been testing it, I can only resize jockeys, so I can add minijockeys as pets (less annoying than a big charger). Done, now they will slowly attempt to break a door if they are not close to their owners but will not attack survivors, sometimes a survivor could be punched if its near of a pet attempting to break the door.

Are the pets so stupid they can't open & close doors?

[Earendil]

Originally Posted by eyal282 Are the pets so stupid they can't open & close doors?

Basically I blocked their melee attacks and special abilities via OnPlayerRunCmd, to prevent pets to attack their owners. In the first version the pets couldn't break the doors because they couldn't attack.

So now when pets don't have any survivor near will be able to use melee attacks to break doors.