OnPlayerDeath

using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using Oxide.Core;
using UnityEngine;

namespace Oxide.Plugins
{
    [Info("Death Protection", "RustPluginGenerator", "1.0.0")]
    [Description("Protects freshly connected players from being killed by other players.")]
    public class DeathProtection : RustPlugin
    {
        private const string PermBypass = "deathprotection.bypass";

        private PluginConfig config;
        private readonly Dictionary<ulong, float> joinTimes = new Dictionary<ulong, float>();

        private class PluginConfig
        {
            [JsonProperty("Protection seconds after connect")]
            public float ProtectionSeconds { get; set; } = 300f;

            [JsonProperty("Announce blocked kills to attacker")]
            public bool NotifyAttacker { get; set; } = true;
        }

        protected override void LoadDefaultConfig() => config = new PluginConfig();

        protected override void LoadConfig()
        {
            base.LoadConfig();
            try
            {
                config = Config.ReadObject<PluginConfig>();
                if (config == null) throw new Exception();
            }
            catch
            {
                PrintWarning("Configuration file is invalid, using defaults");
                LoadDefaultConfig();
            }
            SaveConfig();
        }

        protected override void SaveConfig() => Config.WriteObject(config);

        protected override void LoadDefaultMessages()
        {
            lang.RegisterMessages(new Dictionary<string, string>
            {
                ["Protected"] = "You killed {0}, but they are under spawn protection.",
                ["Blocked"] = "Your spawn protection saved you from {0}."
            }, this);
        }

        private string Msg(string key, string userId = null, params object[] args)
            => string.Format(lang.GetMessage(key, this, userId), args);

        private void Init()
        {
            permission.RegisterPermission(PermBypass, this);
        }

        private void OnPlayerConnected(BasePlayer player)
        {
            if (player == null) return;
            joinTimes[player.userID] = Time.realtimeSinceStartup;
        }

        private void OnPlayerDisconnected(BasePlayer player, string reason)
        {
            if (player == null) return;
            joinTimes.Remove(player.userID);
        }

        private bool IsProtected(BasePlayer player)
        {
            if (player == null) return false;
            if (permission.UserHasPermission(player.UserIDString, PermBypass)) return false;

            float joined;
            if (!joinTimes.TryGetValue(player.userID, out joined)) return false;
            return Time.realtimeSinceStartup - joined < config.ProtectionSeconds;
        }

        private object OnPlayerDeath(BasePlayer player, HitInfo info)
        {
            if (player == null || player.IsNpc || !player.IsConnected) return null;
            if (!IsProtected(player)) return null;

            if (info == null) return null;

            BasePlayer attacker = info.InitiatorPlayer;
            if (attacker == null || attacker == player || attacker.IsNpc) return null;

            if (attacker.currentTeam != 0 && attacker.currentTeam == player.currentTeam) return null;

            player.Heal(player.MaxHealth());

            if (config.NotifyAttacker)
                attacker.ChatMessage(Msg("Protected", attacker.UserIDString, player.displayName));

            player.ChatMessage(Msg("Blocked", player.UserIDString, attacker.displayName));
            return true;
        }
    }
}