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l4d2_Charger_Collision_patch.sp
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l4d2_Charger_Collision_patch.sp
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/*
* Fixes for gamebreaking bugs and stupid gameplay aspects
* Copyright (C) 2019 LuxLuma [email protected]
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma semicolon 1
#include <sourcemod>
#include <sdktools>
#include <sdkhooks>
#pragma newdecls required
#define GAMEDATA "charger_collision_patch"
#define PLUGIN_VERSION "1.1"
static float g_fPreventDamage[MAXPLAYERS+1][MAXPLAYERS+1];
Address Collision_Address = Address_Null;
public APLRes AskPluginLoad2(Handle myself, bool late, char[] error, int err_max)
{
if(GetEngineVersion() != Engine_Left4Dead2)
{
strcopy(error, err_max, "Plugin only supports Left 4 Dead 2");
return APLRes_SilentFailure;
}
return APLRes_Success;
}
public Plugin myinfo =
{
name = "[L4D2]Charger_Collision_Patch",
author = "Lux",
description = "Fixes charger only allow to his 1 survivor index & allows charging same target more than once",
version = PLUGIN_VERSION,
url = "forums.alliedmods.net/showthread.php?p=2647017"
};
public void OnPluginStart()
{
CreateConVar("charger_collision_patch_version", PLUGIN_VERSION, "", FCVAR_NOTIFY|FCVAR_DONTRECORD);
Handle hGamedata = LoadGameConfigFile(GAMEDATA);
if(hGamedata == null)
SetFailState("Failed to load \"%s.txt\" gamedata.", GAMEDATA);
Address patch = GameConfGetAddress(hGamedata, "CCharge::HandleCustomCollision");
if(!patch)
SetFailState("Error finding the 'CCharge::HandleCustomCollision' signature.");
int offset = GameConfGetOffset(hGamedata, "CCharge::HandleCustomCollision");
if( offset == -1 )
SetFailState("Invalid offset for 'CCharge::HandleCustomCollision'.");
int byte = LoadFromAddress(patch + view_as<Address>(offset), NumberType_Int8);
if(byte == 0x01)
{
Collision_Address = patch + view_as<Address>(offset);
StoreToAddress(Collision_Address, 0x00, NumberType_Int8);
PrintToServer("ChargerCollision patch applied 'CCharge::HandleCustomCollision'");
Handle hConvar = FindConVar("z_charge_max_force");
SetConVarFloat(hConvar, GetConVarFloat(hConvar) * 0.25);
HookConVarChange(hConvar, ScaleDownCvar);
hConvar = FindConVar("z_charge_min_force");
SetConVarFloat(hConvar, GetConVarFloat(hConvar) * 0.25);
HookConVarChange(hConvar, ScaleDownCvar);
HookEvent("charger_impact", eChargerImpact, EventHookMode_Pre);
}
else
{
LogError("Error: the Nothing is correct!");
}
delete hGamedata;
}
public void ScaleDownCvar(ConVar hConvar, const char[] sOldValue, const char[] sNewValue)
{
static bool bIgnore = false;
if(bIgnore)
return;
bIgnore = true;
SetConVarFloat(hConvar, GetConVarFloat(hConvar) * 0.25);
bIgnore = false;
}
public void eChargerImpact(Event hEvent, const char[] sEventName, bool bDontBroadcast)
{
int iVictim = GetClientOfUserId(hEvent.GetInt("victim"));
if(iVictim < 1 || !IsClientInGame(iVictim) || !IsPlayerAlive(iVictim))
return;
int iCharger = GetClientOfUserId(hEvent.GetInt("userid"));
if(iCharger < 1 || !IsClientInGame(iCharger) || !IsPlayerAlive(iCharger))
return;
g_fPreventDamage[iCharger][iVictim] = GetEngineTime() + 0.5;
}
public void OnEntityCreated(int iEntity, const char[] sClassname)
{
if(sClassname[0] != 's' || !StrEqual(sClassname, "survivor_bot"))
return;
SDKHook(iEntity, SDKHook_OnTakeDamage, BlockRecursiveDamage);
}
public void OnClientPutInServer(int iClient)
{
if(!IsFakeClient(iClient))
SDKHook(iClient, SDKHook_OnTakeDamage, BlockRecursiveDamage);
}
public Action BlockRecursiveDamage(int iVictim, int &iCharger, int &iInflictor, float &fDamage, int &iDamagetype)
{
if(GetClientTeam(iVictim) != 2)
return Plugin_Continue;
if(iCharger < 1 || iCharger > MaxClients ||
GetClientTeam(iCharger) != 3 || !IsPlayerAlive(iCharger) ||
GetEntProp(iCharger, Prop_Send, "m_zombieClass", 1) != 6 )
return Plugin_Continue;
int iAbility = GetEntPropEnt(iCharger, Prop_Send, "m_customAbility");
if(iAbility <= MaxClients || !HasEntProp(iAbility, Prop_Send, "m_isCharging"))
return Plugin_Continue;
if(GetEntProp(iAbility, Prop_Send, "m_isCharging", 1))
{
if(GetEntPropEnt(iVictim, Prop_Send, "m_carryAttacker") == iCharger &&
GetEntPropEnt(iCharger, Prop_Send, "m_carryVictim") == iVictim)
return Plugin_Continue;
if(g_fPreventDamage[iCharger][iVictim] > GetEngineTime())
return Plugin_Handled;
}
return Plugin_Continue;
}
public void OnPluginEnd()
{
if(Collision_Address == Address_Null)
return;
StoreToAddress(Collision_Address, 0x01, NumberType_Int8);
PrintToServer("ChargerCollision patch restored 'CCharge::HandleCustomCollision'");
Handle hConvar = FindConVar("z_charge_max_force");
UnhookConVarChange(hConvar, ScaleDownCvar);
SetConVarFloat(hConvar, GetConVarFloat(hConvar) / 0.25);
hConvar = FindConVar("z_charge_min_force");
UnhookConVarChange(hConvar, ScaleDownCvar);
SetConVarFloat(hConvar, GetConVarFloat(hConvar) / 0.25);
PrintToServer("ChargerCollision restored 'z_charge_max_force/z_charge_min_force' convars'");
}