GMOD BLOOD AND GORE OVERHAUL HOW TO
GMOD BLOOD AND GORE OVERHAUL CODE

You can see this in rule list, which is a list of interfaces that return nil/NULL (as far as we know at least). You can't ever trust anything not to be nil either, unless you know the fucking implementation of the functions. I always prefer IsValid over ent:IsValid because nil is just the Lua equivalent of null. NULL/nullptr makes a lot of sense in C/C++, but has caveats when being transferred to a scripting language.

GMOD BLOOD AND GORE OVERHAUL HOW TO

Other languages have their own specific cases of how to properly check for nullptrs, empty data sets, etc. This is GMod specific since GLua is different in that NULL is not an empty data type or invalid pointer - it's a side-effect of being based on a C++ engine.

GMOD BLOOD AND GORE OVERHAUL CODE

Here's some code excerpts from my weapons that properly handle validity without having to ever having to use IsValid() since entities will never be 'nil.' I still use '= NULL' in my code in some places due to an old habit that I need to write a regex script to correct, but it esentially acts the same as ent:IsValid() in the cases I'm dealing with.ДЄnd you are correct. Although it makes sense for panels since they can be nil before initialisation, if you structure your code to not allow 'nil' to even be considered an entity, IsValid() becomes wasteful since entities will always have an IsValid Using the rules I listed. Also, you should never have to use util.IsValid/IsValid on entities if you structure your code properly to handle validity cases from the IsValid(ent) checks if the entity is nil, has an IsValid method, and then runs ent:IsValid(). Hooks and callbacks that provide entities will always provide valid ones, with PreDrawViewModel being the exception due to a bug(?), but that provides nil instead of NULL.

Note that worldspawn:IsValid() returns false, so if you are wanting the world to be considered a valid entity, you can check SomeEntity = NULL instead. NOTE: Trace result entities will always be valid if tr.Hit = true/tr.Fraction != 1 (same thing). SWEP.Holster can provide a NULL weapon if the weapon is being removed, or the player is switching to NULL.

This can be from an async callback, hook, timer, or just storing the entity for later use after a set amount of time.

Stored EHandles after time has passed.

Entities returned from other entity functions (GetParent, GetActiveWeapon, etc.).

Entities created or accessed with the ents.Create(), Entity(), Player(), or LocalPlayer() functions.

Entity that is networked through the net library.

Anyway, you CAN trust entities to not be NULL here's a list of rules that I made for when to do validity checks: It would be great if 'if (!NULL) then' worked in Lua, but I guess it does have the benefit of being able to run ent:IsValid on it to abstract all entities validity checks. Why the developer of DarkRP is responsible for this issue unknown - gamemodes/darkrp/gamemode/modules/chat/sv_a:255Д¤.

callback - gamemodes/darkrp/gamemode/modules/chat/sv_a:17ДЈ.

callback - gamemodes/darkrp/gamemode/modules/hungermod/sv_a:74.

gamemodes/darkrp/gamemode/modules/hungermod/sv_a:74: attempt to call method 'Setowning_ent' (a nil value) unknown - lua/includes/extensions/net.lua:32

func - gamemodes/darkrp/entities/entities/chatindicator/a:29ДЈ.

gamemodes/darkrp/entities/entities/chatindicator/a:29: Tried to use a NULL entity! unknown - gamemodes/sandbox/gamemode/a:27ДҐ. GMODSpawnProp - gamemodes/sandbox/gamemode/a:169Д¤.

DoPlayerEntitySpawn - gamemodes/darkrp/gamemode/modules/fpp/pp/server/a:163ДЈ.

IsEmpty - gamemodes/darkrp/gamemode/modules/fpp/pp/server/a:120.

gamemodes/darkrp/gamemode/modules/fpp/pp/server/a:120: attempt to index local 'ent' (a nil value) unknown - gamemodes/darkrp/gamemode/modules/base/sv_gamemode_a:603Д©. PlayerSelectSpawn - gamemodes/base/gamemode/a:479Д§. unknown - gamemodes/darkrp/gamemode/modules/base/sv_gamemode_a:434ДҐ. createMoneyBag - gamemodes/darkrp/gamemode/modules/money/sv_a:44ДЈ. gamemodes/darkrp/gamemode/modules/money/sv_a:44: Tried to use a NULL entity!Дў. Its a lua error How to make the bug happen Lua errors

Gmod blood and gore overhaul