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Add l4d2_rollback plugin
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3 changed files with 258 additions and 1 deletions
16
README.md
16
README.md
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@ -28,6 +28,7 @@ Useful things:
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* [l4d2_population_control](#l4d2_population_control)
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* [l4d2_extrafinaletanks](#l4d2_extrafinaletanks)
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* [globalbans](#globalbans)
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* [l4d2_rollback](#l4d2_rollback)
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### Modified Others
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* [200IQBots_FlyYouFools](#200IQBots_FlyYouFools)
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@ -250,4 +251,17 @@ This plugin will automatically spawn an extra amount of tanks (determined by `l4
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This plugin will store bans in a database and read from it on connect. This allows you to easily have bans global between servers.
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It will automatically intercept any ban that calls OnBanIdentity or OnBanClient (so sm_ban will work normally)
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* **Convars:**
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* `sm_hKickOnDBFailure <0/1>` - Should the plugin kick players if it cannot connect to the database?
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* `sm_hKickOnDBFailure <0/1>` - Should the plugin kick players if it cannot connect to the database?
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### l4d2_rollback
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An idea that you can either manually or have events (friendly fire, new player joining) trigger saving all the player's states. Then if say, a troll comes and kills you and/or incaps your team, you can just quick restore to exactly the point you were at with the same items, health, etc.
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Currently **in development.**
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Currently auto triggers:
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1. On any recent friendly fire (only triggers once per 100 game ticks)
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2. Any new player joins (only triggers once per 100 game ticks)
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* **Commands:**
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* `sm_sstate` - Initiates a manual save of all player's states
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* `sm_rstate <player(s)>` - Restores the selected player's state. @all for all
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BIN
plugins/l4d2_rollback.smx
Normal file
BIN
plugins/l4d2_rollback.smx
Normal file
Binary file not shown.
243
scripting/l4d2_rollback.sp
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243
scripting/l4d2_rollback.sp
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@ -0,0 +1,243 @@
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#pragma semicolon 1
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#pragma newdecls required
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//#define DEBUG
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#define PLUGIN_VERSION "1.0"
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#define LAST_FF_TIME_THRESHOLD 100.0
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#define LAST_PLAYER_JOIN_THRESHOLD 120.0
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#include <sourcemod>
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#include <sdktools>
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#include <jutils>
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#include <left4dhooks>
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static Handle hRoundRespawn;
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public Plugin myinfo =
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{
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name = "L4D2 Rollback",
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author = "jackzmc",
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description = "",
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version = PLUGIN_VERSION,
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url = ""
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};
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/*
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Allows you to rollback to state,
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auto recorded at: player join, or FF event
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*/
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enum struct PlayerState {
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int incapState; //0 -> Not incapped, # -> # of incap
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bool isAlive;
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bool hasKit;
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char pillSlotItem[32];
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int permHealth;
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float tempHealth;
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float position[3];
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float angles[3];
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}
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static PlayerState[MAXPLAYERS+1] playerStates;
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static bool isHealing[MAXPLAYERS+1]; //Is player healing (self, or other)
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static ConVar hMaxIncapCount, hDecayRate;
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static float ZERO_VECTOR[3] = {0.0, 0.0, 0.0}, lastDamageTime, lastSpawnTime;
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public void OnPluginStart() {
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EngineVersion g_Game = GetEngineVersion();
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if(g_Game != Engine_Left4Dead2) {
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SetFailState("This plugin is for L4D/L4D2 only.");
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}
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Handle hGameConf = LoadGameConfigFile("left4dhooks.l4d2");
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if (hGameConf != INVALID_HANDLE) {
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StartPrepSDKCall(SDKCall_Player);
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PrepSDKCall_SetFromConf(hGameConf, SDKConf_Signature, "RoundRespawn");
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hRoundRespawn = EndPrepSDKCall();
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if (hRoundRespawn == INVALID_HANDLE) SetFailState("L4D2_Rollback: RoundRespawn Signature broken");
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} else {
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SetFailState("Could not find gamedata: l4d2_rollback.txt.");
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}
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hMaxIncapCount = FindConVar("survivor_max_incapacitated_count");
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hDecayRate = FindConVar("pain_pills_decay_rate");
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HookEvent("heal_begin", Event_HealBegin);
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HookEvent("heal_end", Event_HealStop);
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HookEvent("player_first_spawn", Event_PlayerFirstSpawn);
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HookEvent("player_hurt", Event_PlayerHurt);
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RegAdminCmd("sm_sstate", Command_SaveGlobalState, ADMFLAG_ROOT, "Saves all players state");
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RegAdminCmd("sm_rstate", Command_RestoreState, ADMFLAG_ROOT, "Restores a certain player's state");
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}
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// /////////////////////////////////////////////////////////////////////////////
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// COMMANDS
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// /////////////////////////////////////////////////////////////////////////////
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public Action Command_SaveGlobalState(int client, int args) {
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RecordGlobalState();
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ReplyToCommand(client, "Saved global state.");
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}
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public Action Command_RestoreState(int client, int args) {
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if(args < 1) {
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ReplyToCommand(client, "Usage: sm_srestore <player>");
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}else{
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char arg1[32];
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GetCmdArg(1, arg1, sizeof(arg1));
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char target_name[MAX_TARGET_LENGTH];
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int target_list[MAXPLAYERS], target_count;
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bool tn_is_ml;
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if ((target_count = ProcessTargetString(
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arg1,
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client,
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target_list,
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MAXPLAYERS,
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COMMAND_FILTER_CONNECTED,
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target_name,
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sizeof(target_name),
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tn_is_ml)) <= 0)
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{
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/* This function replies to the admin with a failure message */
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ReplyToTargetError(client, target_count);
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return Plugin_Handled;
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}
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for (int i = 0; i < target_count; i++) {
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int target = target_list[i];
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if(IsClientConnected(target) && IsClientInGame(target) && GetClientTeam(target) == 2) {
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RestoreState(target);
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//ReplyToCommand(client, "Restored %N's state", target);
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}
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}
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}
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return Plugin_Handled;
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}
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// /////////////////////////////////////////////////////////////////////////////
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// EVENTS
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// /////////////////////////////////////////////////////////////////////////////
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public Action Event_PlayerFirstSpawn(Event event, const char[] name, bool dontBroadcast) {
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float time = GetGameTime();
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if(time - lastSpawnTime >= LAST_PLAYER_JOIN_THRESHOLD) {
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RecordGlobalState();
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PrintToConsoleAll("[Rollback] Saving global state.");
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lastSpawnTime = time;
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}
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}
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void OnClientDisconnect(int client) {
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for(int i = 1; i <= MaxClients; i++) {
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if(IsClientConnected(i) && IsClientInGame(i) && GetClientTeam(i) == 2) {
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playerStates[i].incapState = 0;//TODO: get incap state
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playerStates[i].wasKilled = false;
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players[i].pillSlotItem[0] = '\0';
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playerStates[i].hasKit = false;
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playerStates[i].prePermHealth = 0;
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//TODO: record temp health
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}
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}
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}
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public Action Event_PlayerHurt(Event event, const char[] name, bool dontBroadcast) {
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float currentTime = GetGameTime();
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if(currentTime - lastDamageTime >= LAST_FF_TIME_THRESHOLD) {
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int client = GetClientOfUserId(event.GetInt("userid"));
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int attackerID = event.GetInt("attacker");
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int damage = event.GetInt("dmg_health");
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PrintToChatAll("PLAYER_HURT | V %N | A #%d | DMG %d", client, attackerID, damage);
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if(client && GetClientTeam(client) == 2 && attackerID > 0 && damage > 0) {
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int attacker = GetClientOfUserId(attackerID);
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if(GetClientTeam(attacker) == 2) {
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lastDamageTime = GetGameTime();
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RecordGlobalState();
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PrintToConsoleAll("[Rollback] Saving global state due to FF damage");
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}
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}
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}
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}
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public Action Event_HealBegin(Event event, const char[] name, bool dontBroadcast) {
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int client = GetClientOfUserId(event.GetInt("userid"));
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isHealing[client] = true;
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}
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public Action Event_HealStop(Event event, const char[] name, bool dontBroadcast) {
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int client = GetClientOfUserId(event.GetInt("userid"));
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isHealing[client] = false;
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}
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// /////////////////////////////////////////////////////////////////////////////
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// METHODS
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// /////////////////////////////////////////////////////////////////////////////
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void RecordGlobalState() {
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char item[32];
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for(int i = 1; i <= MaxClients; i++) {
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if(IsClientConnected(i) && IsClientInGame(i) && GetClientTeam(i) == 2) {
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playerStates[i].incapState = GetEntProp(i, Prop_Send, "m_currentReviveCount");
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playerStates[i].isAlive = IsPlayerAlive(i);
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GetClientWeaponName(i, 3, item, sizeof(item));
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playerStates[i].hasKit = StrEqual(item, "weapon_first_aid_kit");
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GetClientWeaponName(i, 4, playerStates[i].pillSlotItem, 32);
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playerStates[i].permHealth = GetClientHealth(i);
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playerStates[i].tempHealth = GetClientHealthBuffer(i);
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GetClientAbsOrigin(i, playerStates[i].position);
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GetClientAbsAngles(i, playerStates[i].angles);
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}
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}
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}
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void RestoreState(int client) {
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char item[32];
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bool isIncapped = GetEntProp(client, Prop_Send, "m_isIncapacitated") == 1;
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bool respawned = false;
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if(!IsPlayerAlive(client) && playerStates[client].isAlive) {
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SDKCall(hRoundRespawn, client);
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RequestFrame(Frame_Teleport, client);
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respawned = true;
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}else if(isIncapped) {
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CheatCommand(client, "give", "health", "");
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TeleportEntity(client, playerStates[client].position, playerStates[client].angles, ZERO_VECTOR);
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}
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SetEntProp(client, Prop_Send, "m_currentReviveCount", playerStates[client].incapState);
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SetEntProp(client, Prop_Send, "m_bIsOnThirdStrike", playerStates[client].incapState >= hMaxIncapCount.IntValue);
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SetEntProp(client, Prop_Send, "m_isGoingToDie", playerStates[client].incapState >= hMaxIncapCount.IntValue);
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if(!respawned) {
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GetClientWeaponName(client, 3, item, sizeof(item));
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if(playerStates[client].hasKit && !StrEqual(item, "weapon_first_aid_kit") && !isHealing[client]) {
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CheatCommand(client, "give", "first_aid_kit", "");
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}
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GetClientWeaponName(client, 4, item, sizeof(item));
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if(!StrEqual(playerStates[client].pillSlotItem, item)) {
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CheatCommand(client, "give", item, "");
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}
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}
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SetEntProp(client, Prop_Send, "m_iHealth", playerStates[client].permHealth);
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SetEntPropFloat(client, Prop_Send, "m_healthBuffer", playerStates[client].tempHealth);
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SetEntPropFloat(client, Prop_Send, "m_healthBufferTime", GetGameTime());
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}
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float GetClientHealthBuffer(int client, float defaultVal=0.0) {
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// https://forums.alliedmods.net/showpost.php?p=1365630&postcount=1
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static float healthBuffer, healthBufferTime, tempHealth;
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healthBuffer = GetEntPropFloat(client, Prop_Send, "m_healthBuffer");
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healthBufferTime = GetGameTime() - GetEntPropFloat(client, Prop_Send, "m_healthBufferTime");
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tempHealth = healthBuffer - (healthBufferTime / (1.0 / hDecayRate.FloatValue));
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return tempHealth < 0.0 ? defaultVal : tempHealth;
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}
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public void Frame_Teleport(int client) {
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TeleportEntity(client, playerStates[client].position, playerStates[client].angles, ZERO_VECTOR);
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}
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