[Marttt]

Description

This plugin turns gascans invulnerable from the damages types below (most common ones):

• Any - All damage types
• Generic - DMG_GENERIC (no type)
• Shove - DMG_CLUB + inflictor = valid client index
• Melee - DMG_SLASH or DMG_CLUB
• Bullet - DMG_BULLET
• Fire (fire in general, molotov, incendiary ammo) - DMG_BURN
• Blast (explosions in general, pipe bomb, explosive ammo, propane canister, oxygen tank) - DMG_BLAST
• Chainsaw (L4D2 only) - DMG_DISSOLVE
• Spit (L4D2 only) - DMG_ENERGYBEAM

Useful to prevent griefers from messing up with gascans, especially in finales or stripper modified maps.

Also useful for survival games before the clock starts, where gascans can explode while shoving.

For L4D2 it's enabled by default only for scavenge gascans, but you can change it to normal gascans through the l4d_gascan_invul_scavenge_only cvar.

For L4D1 it's enabled only for normal gascans, since there is no scavenge gascans in the L4D1 game.

Features

• Allow configuring which gascans should be invulnerable. (Normal / Scavenge [L4D2 only])
• Allow configuring which types of damage are allowed to explode the gascan.
• Allow configuring the distance to be invulnerable.
• Allow configuring which gascans type should be invulnerable.
• Allow setting the gascan health.

Cvars

A configuration file named "l4d_gascan_invul.cfg" will automatically be created for you upon the first run in the "\cfg\sourcemod\" folder.

PHP Code:

// Turn gascans invulnerable to any damage. (regardless of the damage type)
// 0 = OFF, 1 = ON.
// -
// Default: "0"
// Minimum: "0.000000"
// Maximum: "1.000000"
l4d_gascan_invul_any_damage "0"

// Turn gascans invulnerable to blast damage. (DMG_BLAST)
// 0 = OFF, 1 = ON.
// -
// Default: "1"
// Minimum: "0.000000"
// Maximum: "1.000000"
l4d_gascan_invul_blast_damage "1"

// Turn gascans invulnerable to bullet damage. (DMG_BULLET)
// 0 = OFF, 1 = ON.
// -
// Default: "1"
// Minimum: "0.000000"
// Maximum: "1.000000"
l4d_gascan_invul_bullet_damage "1"

// Turn gascans invulnerable to chainsaw damage. (DMG_DISSOLVE)
// L4D2 only.
// 0 = OFF, 1 = ON.
// -
// Default: "1"
// Minimum: "0.000000"
// Maximum: "1.000000"
l4d_gascan_invul_chainsaw_damage "1"

// How far the gascan should be to be invulnerable.
// 0 = OFF.
// -
// Default: "0.0"
// Minimum: "0.000000"
l4d_gascan_invul_distance "0.0"

// Enable/Disable the plugin.
// 0 = Disable, 1 = Enable.
// -
// Default: "1"
// Minimum: "0.000000"
// Maximum: "1.000000"
l4d_gascan_invul_enable "1"

// Turn gascans invulnerable to fire damage. (DMG_BURN)
// 0 = OFF, 1 = ON.
// -
// Default: "1"
// Minimum: "0.000000"
// Maximum: "1.000000"
l4d_gascan_invul_fire_damage "1"

// Turn gascans invulnerable to generic damage. (DMG_GENERIC)
// 0 = OFF, 1 = ON.
// -
// Default: "1"
// Minimum: "0.000000"
// Maximum: "1.000000"
l4d_gascan_invul_generic_damage "1"

// Override normal gascan health.
// 0 = OFF.
// Default game value = 20.
// -
// Default: "0"
// Minimum: "0.000000"
l4d_gascan_invul_health "0"

// Turn gascans invulnerable to melee damage. (DMG_SLASH or DMG_CLUB)
// 0 = OFF, 1 = ON.
// -
// Default: "1"
// Minimum: "0.000000"
// Maximum: "1.000000"
l4d_gascan_invul_melee_damage "1"

// Override scavenge gascan health.
// L4D2 only.
// 0 = OFF.
// Default game value = 20
// -
// Default: "0"
// Minimum: "0.000000"
l4d_gascan_invul_scavenge_health "0"

// Apply invulnerability only to scavenge gascans.
// L4D2 only.
// 0 = OFF, 1 = ON.
// -
// Default: "1"
// Minimum: "0.000000"
// Maximum: "1.000000"
l4d_gascan_invul_scavenge_only "1"

// Turn gascans invulnerable to shove damage. (DMG_CLUB and inflictor = valid client index)
// 0 = OFF, 1 = ON.
// -
// Default: "1"
// Minimum: "0.000000"
// Maximum: "1.000000"
l4d_gascan_invul_shove_damage "1"

// Turn gascans invulnerable to spit damage. (DMG_ENERGYBEAM)
// L4D2 and scavenge gascan only.
// 0 = OFF, 1 = ON.
// -
// Default: "1"
// Minimum: "0.000000"
// Maximum: "1.000000"
l4d_gascan_invul_spit_damage "1" 


Admin Commands

• sm_print_cvars_l4d_gascan_invul => Print the plugin related cvars and their respective values to the console. (z flag required)

Change Log

Spoiler

1.0.8 (23-September-2021)
- Added cvar to block damage from any damage type.
- Added cvar to block damage from generic damage types. (thanks "KRUTIK" for reporting)

1.0.7 (11-April-2021)
- Fixed gascans not applying damage forces on shove. (thanks "Forgetest" for reporting)

1.0.6 (26-January-2021)
- Fixed incompatibility with other plugins that use OnTakeDamage. (thanks "Tonblader" for reporting)
- Added invulnerability cvar to the chainsaw.

1.0.5 (12-January-2021)
- Added cvar to control distance invulnerability. (thanks "cravenge" for requesting)

1.0.4 (03-January-2021)
- Fixed "Invalid memory access" error. (thanks "ur5efj" for reporting)

1.0.3 (31-December-2020)
- Added cvar to control both normal and scavenge gascan health. (thanks "Tonblader" for requesting)
- Added cvar to block shove damage.

1.0.2 (29-November-2020)
- Added support to physics_prop, prop_physics_override and prop_physics_multiplayer.

1.0.1 (26-October-2020)
- Added cvar to block bullet damage. (thanks to "Psyk0tik")
- Added cvar to block melee damage.
- Added support to prop_physics / physics_prop gascans.
- Added L4D1 support.
- Improved the damage type check.

1.0.0 (26-October-2020)
- Initial release.

Notes

• If no damage type allowed is detected, the plugin ignores any damage [damage = 0] (depends on the cvars). It also blocks the damage type DMG_BURN (ignite) and DMG_ENERGYBEAM (spit) which can trigger the gascan to explode.
• In L4D2 survival mode seems that you can break the gascan while shoving, before the clock starts. This plugin also blocks that with the melee cvar.
• The method used to identify if is a scavenge gascan is by checking its skin. If it's greater than 0 (default), the plugin understands that is a scavenge gascan. (L4D2 only)
• Since there is no scavenge gascan on L4D1, it only applies to normal gascans.
• Chainsaw damage only applies to L4D2.
• Spit damage only applies to L4D2.

To Do

• Add option to only make invulnerable gascans already picked up.
• Add option to only make invulnerable gascans by detecting if the scavenge event started.

Thank you!

• Tonblader - for requesting several changes and testing in his server.
• Psyk0tik - for the feedback.
• ur5efj - for reporting a bug.
• cravenge - for requesting a distance cvar.
• Forgetest - for reporting shove damage forces not working when plugin enabled.
• KRUTIK - for reporting some other damages (from missile plugin) exploding the gascans.

Related Plugins

• [L4D1 & L4D2] Explosion Announcer by Marttt
• [L4D2] Scavenge Gascan Respawn by Marttt
• [L4D2] Scavenge Gascan Glow Fix by Marttt
• [L4D2] Gascan Announcer by BHaType
• [L4D1 & L4D2] Remove Weapons/Carryables Collision by Marttt

Post Reply

• Any feedback, bug reports, fixes, improvements, translations or suggestions for the plugin are welcome.

Installation

• Put the "l4d_gascan_invul.smx" file (click Get Plugin) in your "\addons\sourcemod\plugins\" folder.

[Psyk0tik]

Nice work!

What about invulnerability to bullet damage? I've seen many players who like to shoot gas cans so that the rest of the team has to keep waiting for them to respawn. In my opinion, this is the most annoying type of gas can griefing because anyone can shoot gas cans from any distance.

[Marttt]

Thanks for the feedback Crasher,

Probably I need to make it more clear on description and cvars.

I didn't make a specific cvar for bullet because other types of damages can also make the gascan break.

[Psyk0tik]

Alright, that makes more sense.

[Tank Rush]

I will test this on my server
Good job!

[cravenge]

I'm liking this so far. Only enabled the invulnerability function against bullets and melees cuz of realism.

Might I add a suggestion? Squeeze in an exception for the bullet case and by that, I mean putting a distance check between the gas can and the player.

Speaking realistically, it would make sense that said gas can would only be ignited from far away (let's say... 1.25k or 1.5k game units) due to air friction.

[ur5efj]

v1.0.3
sourcemod-1.10.0-git6497

L 01/02/2021 - 02:39:24: SourceMod error session started
L 01/02/2021 - 02:39:24: Info (map "c2m2_fairgrounds") (file "C:\SteamCMD\SteamApps\common\Left 4 Dead 2 Dedicated Server\left4dead2\addons\sourcemod\logs\errors_20210102.log")
L 01/02/2021 - 02:39:24: [SM] Exception reported: Invalid memory access
L 01/02/2021 - 02:39:24: [SM] Blaming: l4d_gascan_invul.smx
L 01/02/2021 - 02:39:24: [SM] Call stack trace:
L 01/02/2021 - 02:39:24: [SM]   [1] Line 265, l4d_gascan_invul.sp::OnEntityCreated
L 01/02/2021 - 02:46:11: Error log file session closed.

All previous version no error logs.

[Forgetest]

Hi bro, big thanks to your great job. Still, I met with some questions when using it.
May I request for a feature and add some suggestions?

Feature: Make it toggle-able that player can shove gascans that already picked up. Seems essential in Scavenge games. (Perhaps you can handle those gascans via hooking event "item_pickup")

Suggestions: Shove / Blast damages come along with its forces. Indeed, pipebomb can still blow gascans far away. While shoves cannot move them, they can push gascans down, have the potential to raise unexpected results.

;)

[Tonblader]

Originally Posted by Forgetest Suggestions: Shove / Blast damages come along with its forces. Indeed, pipebomb can still blow gascans far away. While shoves cannot move them, they can push gascans down, have the potential to raise unexpected results.

I would also like them to have protection against all kinds of forces (explosion, tank, collision, etc.) so that the cans do not fly all over the map (that can pushed only by survivor shove).

Or maybe the best post to request this, is in this one:
[L4D1 & L4D2] Remove Weapons/Carryables Collision

[Marttt]

@Forgetest, thanks for reporting.

The plugin wasn't supposed to block the force applied on shove.
Seems that block the event also removes the force (damageForce).
Fixed in the new version (1.0.7).

About the item moving from blast damage, pipe bomb explosions, etc try the plugin that @Tonblader mentioned. (also made by me)
The only "downside" is that it disables motion to all items (not only gascans)

• [L4D1 & L4D2] Remove Weapons/Carryables Collision by Marttt