[dcx2]

I hate Riot Cops. They are way too hard to kill. No puny plastic face mask is going to stop a bullet. And armor is not invincible, so emptying a whole clip or two should bring him down. With help from Mr. Zero and McFlurry, I was able to solve this problem. It was also suggested to add Fallen Survivors and Jimmy Gibbs to this plugin, since they have an obnoxious amount of health.

FEATURES -

- Head shots can kill riot cops from the front (4x damage)
- Body shots do a fraction of original damage to riot cops from the front (configurable)
- Head shots to fallen survivors and Jimmy Gibbs do much more damage (configurable)

CVARS -

sm_riotcopheadshot_enable - default 1 - Enables this plugin
sm_riotcopheadshot_riotheadenable - default 1 - 0: disabled, 1: Head shots kill riot cops, 2: Head shots do 1x to riot cops
sm_riotcopheadshot_riotbodydivisor - default 40.0 - How much to divide riot cop body shot damage by (0 will disable)
sm_riotcopheadshot_fallenheadmultiplier - default 12.0 - How much to multiply fallen head shots by (0 will disable)
sm_riotcopheadshot_debug - default 0 - Print debug output to chat
(new!) sm_riotcopheadshot_bodypenetrationdamage - default 13.0 - How much damage a penetrating weapon (magnum, military sniper, hunting rifle) should do to the body of a riot cop

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I took some time to select the defaults carefully so that this is balanced instead of completely nerfing these uncommons

If enabled (1), head shots will always kill riot cops, no matter what weapon. If enabled (2), some weapons may need more than one bullet.

For body shots, it takes about one full clip of a tier 2 or a shotgun, and about two clips of an smg. This makes the riot cops much tougher than common infected, but not impossible. Penetrating weapons will take four shots to kill them.

For fallen survivors it took about 1-4 head shots with an smg and about 1-2 head shots with a tier 2 to bring down a fallen. Body damage is unaffected. Jimmy Gibbs has 3x as much health, so shots will have to scale accordingly. Since penetrating bullets to the body will kill Jimmy Gibbs, penetrating bullets to the head will do so as well.

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CHANGELOG:

v1.3: Fixed unhooking event (thanks Mr. Zero)
Potential stability fixes

v1.2: Added Jimmy Gibbs head shots and penetrating body damage to riot cops (228 views!)

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This plugin requires SDKHooks! I used 2.1, but it might work with 2.0 (the version that introduced the TakeDamage native)

To install, download the smx (SDKHooks prevents the web compiler from working)

UPGRADING:

If upgrading, backup any modifications made to [game]/cfg/sourcemod/L4D2RiotCopHeadShot.cfg, then delete that file and restart your server. The file will be auto-created again with the new cvars. Modify as needed.

[McFlurry]

A small tip, usually it's best to minimize the number of if statements by grouping the conditions as such.

PHP Code:

if (g_bEnabled && isValidSurvivor(attacker) && hitgroup == 1) 


Also why do you apply damage separate of the bullet for the fallen headshot? Seems a bit weird, but that's just my opinion.
Congratulations on releasing this though.

[dcx2]

I saw damage and inflictor are both passed by reference into TraceAttack, but modifying them did not have any effect at all. I guess TraceAttack is called after the damage would have been done. It just doesn't work without TakeDamage.

[McFlurry]

Did you return Plugin_Changed after modifying them?

[dcx2]

Well, that would explain why it wasn't working. I'll make a new version which doesn't need TakeDamage then.

[dcx2]

Version bump

Added Jimmy Gibbs to the head shot detection, since he has 3000 health.

Added special cvar for penetrating weapons to do extra body damage.

[Mr. Zero]

A small update. Hope you don't mind, dcx2. Fixed a small oversight of unhooking event.

[SM] Native "UnhookEvent" reported: Game event "infected_hurt" has no active hook
[SM] Displaying call stack trace for plugin "l4d2_riotcopheadshot.smx":
[SM]   [0]  Line 79, l4d2_riotcopheadshot.sp::OnRCHSDebugChanged()

[dcx2]

Version bump. I unhooked it slightly different than you did, by checking the Old Value in the HookConVarChange. I imagine what you did was set it to the same value 2+ times in a row.

Also, I think I once discovered that SDKHooks_TakeDamage was causing some kind of intermittent issue. TakeDamage always makes me uncomfortable so I switched back to ragdolling the riot cops if they're supposed to die.

v1.3: Fixed unhooking event (thanks Mr. Zero)
Potential stability fixes

[Toranks]

sm_riotcopheadshot_debug
This is a very useful debug, not only for riots

Spoiler

RCTA: 26 2 2 43.384197 2 1 0 3
TA: Riot cop body shot (before 43.384197, after 2.169209) (2 1 0)
IH: Hit infected in the 0 for 2 damage (334 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 2 for 17.353679
IH: Hit infected in the 3 for 17 damage (332 remaining)
RCTA: 26 2 2 43.328536 2 1 0 3
TA: Riot cop body shot (before 43.328536, after 2.166426) (2 1 0)
IH: Hit infected in the 3 for 2 damage (315 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 2 for 17.331415
IH: Hit infected in the 3 for 17 damage (313 remaining)
RCTA: 26 2 2 43.304180 2 1 0 3
TA: Riot cop body shot (before 43.304180, after 2.165209) (2 1 0)
IH: Hit infected in the 3 for 2 damage (295 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 20000002 for 17.321672
IH: Hit infected in the 3 for 17 damage (293 remaining)
RCTA: 26 2 2 43.394599 2 1 20 5
TA: Riot cop body shot (before 43.394599, after 2.169729) (2 1 14)
IH: Hit infected in the 3 for 2 damage (276 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 20000002 for 17.357839
IH: Hit infected in the 5 for 17 damage (274 remaining)
RCTA: 26 2 2 43.278469 2 1 8 3
TA: Riot cop body shot (before 43.278469, after 2.163923) (2 1 8)
IH: Hit infected in the 5 for 2 damage (256 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 20000002 for 17.311389
IH: Hit infected in the 3 for 17 damage (254 remaining)
RCTA: 26 2 2 43.332588 2 1 19 5
TA: Riot cop body shot (before 43.332588, after 2.166629) (2 1 13)
IH: Hit infected in the 3 for 2 damage (237 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 2 for 17.333036
IH: Hit infected in the 5 for 17 damage (235 remaining)
Toranks paused the game
] sb_open_fire 1
Toranks unpaused the game
RCTA: 26 2 2 43.275360 2 1 8 3
TA: Riot cop body shot (before 43.275360, after 2.163768) (2 1 8)
IH: Hit infected in the 5 for 2 damage (217 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 20000002 for 17.310144
IH: Hit infected in the 3 for 17 damage (215 remaining)
RCTA: 26 2 2 43.306083 2 1 5 7
TA: Riot cop body shot (before 43.306083, after 2.165304) (2 1 5)
IH: Hit infected in the 3 for 2 damage (198 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 2 for 17.322433
IH: Hit infected in the 7 for 17 damage (196 remaining)
RCTA: 26 2 2 43.291065 2 1 5 7
TA: Riot cop body shot (before 43.291065, after 2.164553) (2 1 5)
IH: Hit infected in the 7 for 2 damage (179 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 2 for 17.316427
IH: Hit infected in the 7 for 17 damage (176 remaining)
RCTA: 26 2 2 43.323169 2 1 11 2
TA: Riot cop body shot (before 43.323169, after 2.166158) (2 1 b)
IH: Hit infected in the 7 for 2 damage (159 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 2 for 17.329267
IH: Hit infected in the 2 for 17 damage (157 remaining)
RCTA: 26 2 2 43.247783 2 1 20 5
TA: Riot cop body shot (before 43.247783, after 2.162389) (2 1 14)
IH: Hit infected in the 2 for 2 damage (140 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 2 for 17.299114
IH: Hit infected in the 5 for 17 damage (137 remaining)
RCTA: 26 2 2 43.258670 2 1 12 2
TA: Riot cop body shot (before 43.258670, after 2.162933) (2 1 c)
IH: Hit infected in the 5 for 2 damage (120 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 2 for 17.303468
IH: Hit infected in the 2 for 17 damage (118 remaining)
RCTA: 26 2 2 43.188812 2 1 20 5
TA: Riot cop body shot (before 43.188812, after 2.159440) (2 1 14)
IH: Hit infected in the 2 for 2 damage (101 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 2 for 17.275526
IH: Hit infected in the 5 for 17 damage (98 remaining)
RCTA: 26 2 2 43.279071 2 1 8 3
TA: Riot cop body shot (before 43.279071, after 2.163953) (2 1 8)
IH: Hit infected in the 5 for 2 damage (81 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 20000002 for 17.311628
IH: Hit infected in the 3 for 17 damage (79 remaining)
RCTA: 26 2 2 43.290321 2 1 8 3
TA: Riot cop body shot (before 43.290321, after 2.164515) (2 1 8)
IH: Hit infected in the 3 for 2 damage (62 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 2 for 17.316129
IH: Hit infected in the 3 for 17 damage (60 remaining)
RCTA: 26 2 2 43.239440 2 1 18 4
TA: Riot cop body shot (before 43.239440, after 2.161972) (2 1 12)
IH: Hit infected in the 3 for 2 damage (42 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 2 for 17.295776
IH: Hit infected in the 4 for 17 damage (40 remaining)
RCTA: 26 2 2 43.297412 2 1 17 4
TA: Riot cop body shot (before 43.297412, after 2.164870) (2 1 11)
IH: Hit infected in the 4 for 2 damage (23 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 2 for 17.318965
IH: Hit infected in the 4 for 17 damage (21 remaining)
RCTA: 26 2 2 43.257656 2 1 9 2
TA: Riot cop body shot (before 43.257656, after 2.162882) (2 1 9)
IH: Hit infected in the 4 for 2 damage (3 remaining)
OTD: Rochelle hit infected with weapon_pistol / player / 20000002 for 17.303062
IH: Hit infected in the 2 for 17 damage (1 remaining)
RCTA: 26 2 2 43.290271 2 1 1 3
TA: Riot cop body shot (before 43.290271, after 2.164513) (2 1 1)
OTD: Rochelle hit infected with weapon_pistol / player / 20000002 for 17.316108
RCTA: 26 2 2 43.315395 2 1 19 5
TA: Riot cop body shot (before 43.315395, after 2.165769) (2 1 13)
OTD: Rochelle hit infected with weapon_pistol / player / 20000002 for 17.326158

Still works, and together with plugins that nerf instakills in commons, it makes Riots and uncommons more balanced with each other.
Good plugin!