Subscribe to download
Tool Gun [Resource]

Here it is, the Tool Gun from GMod. I had the files laying for it on my HDD ever since like December of 2018? I don't know, but it's been a long time and I forgot about it.
Trying to mimic how it was made in Garry's Mod, the Tool Gun has the ability to be scripted by modders. Yup, no function is hardcoded, everything has it's own script file and interfaces with the Tool Gun over the exposed scripting stack.
As for the functions, there are 9 of them. Of course, I wasn't able to make everything, as I'm limited by what Serious Engine can and can't offer. Here's a rough description of them.

NOTE: Most of the functions don't work on entities like Simple Models, due to Croteam removing any kind of scriptability from them. Static models are perfectly fine, though. The mod shows entities you cannot interact with by marking them with a red X.

NOTE: To change the current function, use the Page Up and Page Down buttons.

Teleporter
Pretty self explanatory. You get teleported anywhere you shoot.

Mover
Moves around entities. Left click selects the entity you want to move. Right click teleports the entity you've selected.

Duplicator
Duplicates Static Models. Left click selects the model to be duplicated. Right click duplicates the model at the selected point.

Remover
Removes entities. Left click removes the entity that was shot at.

Healer
Heals players. Left click heals the shot player to 100HP. Right click replenishes the shot player's armor to 100.

Colorizer
Changes colors of Static Models, Player Puppets and Enemy Puppets. Left click sets the color of the shot entity. Right click changes the color you currently use.

Weaponizer
Spawns weapons and ammunition. To set the spawned weapon, type "!weapon [Name of the weapon from Kuber's Weapon Database mod]" into the game's chat. Left click spawns the weapon. Right click spawns the ammo for the weapon.
NOTE: In Singleplayer, use "globals.SetWeaponizerWeapon("[Name of the weapon from Kuber's Weapon Database mod]")" in the console to change the weapon.

Infighter
Forces two enemies to fight with eachother. Left click selects the enemy. Right click selects the foe for that enemy.

Attacher
Attaches Static Models to enemies. Left click selects the model. Right click attaches the model to the enemy that was shot.

The Tool Gun exposes two functions for scripting.

worldGlobals.ToolGun.RegisterToolGunFunction(id, title, description, usage, onFire, onAltFire)
Registers a new Tool Gun function.
id (string) - The ID of the function. (i.e. mover)
title (string) - The title of the function. (i.e. Colorizer)
description (string) - The description of the function. (i.e. Color models and puppets.)
usage (table) - The descriptions of the weapon usage.
The structure of the usage table is:
{
LMB = "What the left mouse button does",
RMB = "What the right mouse button does"
}
onFire/onAltFire (function) - The firing functions. They both receive following parameters in the following order:
penPlayer (CPlayerPuppetEntity) - The player that invoked the function
hitEntity (entity handle) - The entity that was hit. (In the case that no entity was hit, this is nil)
hitVec (Vector3f) - The position vector of the hit.
hitNorm (Vector3f) - The normal vector of the hit.
strRandomness (string) - A random string. (Used for syncing the duplicator)

noam 2000 - Animating the Tool Gun
Facepunch Studios - Tool Gun model
Valve - Sounds