using UnityEngine;

using System.Collections.Generic;

using cygwin_x32.ObscuredTypes;

using System.Collections;

using System.Reflection;

using System.Threading;

using System.Linq;

using System.IO;

using System;

using static Hack.Util;

namespace Hack {

    class Payload {

        private static GameObject gameObject;

        private static string error = "";

        public static void entry() {

            try {

                gameObject = new GameObject();

                gameObject.AddComponent<ESP>();

                UnityEngine.Object.DontDestroyOnLoad(gameObject);

            } catch (Exception e) {

                File.WriteAllText("crashlog.txt", error+e.ToString());

            }

        }

    }

    class ESP : MonoBehaviour {

        private void drawESP(object player) {

            float phi = 6;

            var worldPos  = (Transform)readField("BaseNetPlayer", "PlayerTransform", player);

            Vector3 heading = worldPos.transform.position - Camera.main.transform.position;

            if (Vector3.Dot(Camera.main.transform.forward, heading) > 0) {

                var screenPos = Camera.main.WorldToScreenPoint(worldPos.position);

                screenPos.y = Screen.height - screenPos.y;

                var width  = 120*(phi/screenPos.z);

                var height = (isCrouching(player) ? 160 : 240) * (phi/screenPos.z);

                var thick  = 1f;

                GUI.Label(new Rect(screenPos.x-width/2, screenPos.y-height/2-20, 35, 20), ""+getHealth(player));

                DrawBox(new Vector2(screenPos.x-width/2, screenPos.y-height/2),

                        new Vector2(width, height), thick, Color.red);

            }

        }

        private float getHealth(object player) {

            var pinfo = readField("BaseNetPlayer", "playerInfo", player);

            return (float)((ObscuredFloat)readField("PlayerInfo", "_health", pinfo));

        }

        private IEnumerable getAlivePlayers() {

            var alivePlayers = readProperty("BaseClientGame", "AlivePlayers",

                readProperty("Peer", "ClientGame", GameObject.Find("net"))

            ) as IEnumerable;

            return alivePlayers;

        }

        private Vector3 getHead(object player) {

            Camera cam = (Camera)readProperty("BaseNetPlayer", "MainCamera", player);

            return cam.transform.position;

        }

        private object getLocalPlayer() {

            return readProperty("BaseClientGame", "LocalPlayer",

                readProperty("Peer", "ClientGame", GameObject.Find("net")));

        }

        private bool isCrouching(object player) {

            return (bool)readProperty("BaseMoveController", "isSeat",

                readProperty("BaseNetPlayer", "Controller", player));

        }

        private bool onOurTeam(object player) {

            bool isTeamGame = (bool)readProperty("BaseGame", "IsTeamGame",

                readProperty("Peer", "ClientGame", GameObject.Find("net")));

            if (!isTeamGame) return false;

            var localPlayer = readProperty("BaseClientGame", "LocalPlayer",

                readProperty("Peer", "ClientGame", GameObject.Find("net")));

            var myTeam = readProperty("BaseNetPlayer", "PlayerType", localPlayer);

            var team = readProperty("BaseNetPlayer", "PlayerType", player);

            return (int)myTeam == (int)team;

        }

        public void OnGUI() {

            try {

                foreach (object player in getAlivePlayers()) {

                    if (player == null)

                        continue;

                    ObscuredInt id = (ObscuredInt)readProperty("BaseNetPlayer", "UserID", player);

                    if ( id >= 100000000 && id <= 500000000 || onOurTeam(player))

                        continue;

                    drawESP(player);

                }

            } catch (Exception e) {

                File.WriteAllText("crashlog.txt", e.ToString());

            }

        }

    }

}