FREE TeleportGun : 0.1.2 0.1.2

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using System;
using System.Collections.Generic;
using System.Linq;

namespace Oxide.Plugins
{
    [Info("Teleport Gun", "2CHEVSKII", "0.1.2")]
    [Description("Shoot something to teleport to it!")]
    class TeleportGun : RustPlugin
    {
        #region [Hooks]


        void Init()
        {
            permission.RegisterPermission(perm, this);
            LoadConfigVariables();
        }

        protected override void LoadDefaultConfig() { }

        protected override void LoadDefaultMessages() => lang.RegisterMessages(defaultMessages, this, "en");

        void OnPlayerAttack(BasePlayer attacker, HitInfo info)
        {
            if(enabledplayers.Keys.Contains(attacker) && info.Weapon.GetItem() == enabledplayers[attacker])
            {
                attacker.MovePosition(info.HitPositionWorld);
            }
        }

        void OnPlayerActiveItemChanged(BasePlayer player, Item oldItem, Item newItem)
        {
            if(enabledplayers.ContainsKey(player) && autodisable)
            {
                enabledplayers.Remove(player);
                Replier(player, disabled);
            }
        }


        #endregion

        #region [Fields]


        bool autodisable = true;
        int autodisabletimer = 0;
        const string perm = "teleportgun.use";

        const string prefix = "Prefix";
        const string enabled = "Enabled";
        const string disabled = "Disabled";
        const string wrongitem = "Wrong item";
        const string nopermission = "No permission";


        Dictionary<string, string> defaultMessages = new Dictionary<string, string>
        {
            [prefix] = "<color=yellow>[</color>TELEPORT GUN<color=yellow>]</color>",
            [enabled] = "<color=#47FF11>E</color>nabled teleport gun<color=#47FF11>.</color>",
            [disabled] = "<color=red>D</color>isabled teleport gun<color=red>.</color>",
            [nopermission] = "<color=red>Y</color>ou have no permission to use teleport gun<color=red>!</color>",
            [wrongitem] = "<color=yellow>A</color>ctive item must be a gun<color=yellow>!</color>"
        };

        Dictionary<BasePlayer, Item> enabledplayers = new Dictionary<BasePlayer, Item>();


        #endregion

        #region [Command]


        [ChatCommand("tpgun")]
        void CmdSwitchGun(BasePlayer player, string command, string[] args)
        {
            if(permission.UserHasPermission(player.UserIDString, perm))
            {
                if(!enabledplayers.ContainsKey(player) && player.GetHeldEntity() is BaseProjectile)
                {
                    enabledplayers.Add(player, player.GetHeldEntity().GetItem());
                    if(autodisabletimer > 0) timer.Once(Convert.ToSingle(autodisabletimer), () => {
                        if(enabledplayers.ContainsKey(player))
                        {
                            enabledplayers.Remove(player);
                            Replier(player, disabled);
                        }
                    });
                    Replier(player, enabled);
                }
                else if(!enabledplayers.ContainsKey(player) && !(player.GetHeldEntity() is BaseProjectile))
                {
                    Replier(player, wrongitem);
                }
                else
                {
                    enabledplayers.Remove(player);
                    Replier(player, disabled);
                }
            }
            else
            {
                Replier(player, nopermission);
            }
        }


        #endregion
        
        #region [Helpers]


        void LoadConfigVariables()
        {
            CheckConfig("Auto disable when active item changed", ref autodisable);
            CheckConfig("Auto disable after timer (seconds)", ref autodisabletimer);
            SaveConfig();
        }

        void CheckConfig<T>(string key, ref T value)
        {
            if(Config[key] is T) value = (T)Config[key];
            else Config[key] = value;
        }

        void Replier(BasePlayer player, string message) => SendReply(player, $"{lang.GetMessage(prefix, this, player.UserIDString)} {lang.GetMessage(message, this, player.UserIDString)}");


        #endregion

    }
}