using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace Trigger
{
    class Trigger
    {

        const int dwLocalPlayer = 0x00A77D3C; //Local Player
        const int dwTeamNumber = 0x000000F0; //Team number offset, Either T or CT.
        const int dwCrosshairID = 0x00002410; // Crosshair offset
        const int dwEntityList = 0x04A19DA4; // Entity List offset
        const int dwEntitySize = 0x10; // Size of Entity List
        const int dwHealth = 0x000000FC; // Health offset
        const int dwActiveWeapon = 0x000012C0; // Active weapon offset (Weapon that's in hands.)
        const int dwWeaponID = 0x00001690; // Offset of weapon ID (See Weapon Names Enum)

        public static int dwDelay = 75;

        [DllImport("user32.dll")]
        static extern void mouse_event(uint dwFlags, uint dx, uint dy, uint dwData, UIntPtr dwExtraInfo);

        [DllImport("user32.dll")]
        public static extern short GetAsyncKeyState(UInt16 virtualKeyCode);

        public enum WindowsVirtualKey
        {
            VK_XBUTTON1 = 0x05, // Extended mouse button 1
            VK_XBUTTON2 = 0x06, // Extended mouse button 2
        }

        public enum WeaponNames : int
        {
            Deagle = 1,
            DualBerettas = 2,
            FiveSeven = 3,
            Glock18 = 4,
            AK47 = 7,
            AUG = 8,
            AWP = 9,
            Famas = 10,
            G35G1 = 11, //T-Side Auto
            Galil = 13,
            M249 = 14,
            M4A4 = 16,
            Mac10 = 17,
            P90 = 19,
            UMP45 = 24,
            XM1014 = 25,
            PPBizon = 26,
            Mag7 = 27,
            Negev = 28,
            SawedOff = 29,
            Tec9 = 30,
            Zues = 31,
            P2000 = 32,
            Mp7 = 33,
            Mp9 = 34,
            Nova = 35,
            P250 = 36,
            Scar20 = 38, // CT-Side Auto
            SG553 = 39,
            SSG08 = 40,
            CTKnife = 42, //default
            Flasbang = 43,
            HEGrenade = 44,
            Smoke = 45,
            Molotov = 46,
            Decoy = 47,
            Incendiary = 48,
            C4 = 49,
            TKnife = 59,// Default
            M4A1 = 60,
            USP = 61,
            CZ75 = 63,
            Bayonet = 500,
            FlipKnife = 505,
            GutKnife = 506,
            Karambit = 507,
            M9Bayo = 508,
            Huntsman = 509,
            Falchion = 512,
            Butterfly = 515,
        };

        public Trigger()
        {
            Memory mem = new Memory("csgo"); // Attach to CSGO
            mem.StartProcess(); // Start reading memory

            while (true)
            {
                int cDLL = mem.DllImageAddress("client.dll"); // Load modules in Client.dll
                int localPlayer = mem.ReadInt(cDLL + dwLocalPlayer); // Read Client.dll + dwLocalPlayer offset -- Get's the base LocalPlayer, where all information is stored that we need.
                int localPlayerHealth = mem.ReadInt(localPlayer + dwHealth); // Read localPlayer + dwHealth offset -- Gets the health of players.
                int localTeam = mem.ReadInt(localPlayer + dwTeamNumber); // read localPlayer + dwTeamNumber offset -- Gets the team number of players.
                int crosshairID = mem.ReadInt(localPlayer + dwCrosshairID); // read localPlayer + dwCrosshairID -- Gets the crosshairID
                int enemyInCrosshair = mem.ReadInt(cDLL + dwEntityList + ((crosshairID - 1) * dwEntitySize)); // read client.dll + dwEntityList + crosshairID - 1 * dwEntityList -- Determins if anyone is within the crosshair
                int enemyInCrosshairHealth = mem.ReadInt(enemyInCrosshair + dwHealth); // read enemyInCrosshair + dwHealth -- Checks to players health within the crosshair.
                int enemyCrosshairTeam = mem.ReadInt(enemyInCrosshair + dwTeamNumber); // read nemyinCrosshair + dwTeamNumber -- Checkes the players teamnumber.

                //Credits : reidenz @ Unknown // Translated C++ to C#.
                int wLocalPlayer = mem.ReadInt(cDLL + dwLocalPlayer); // read client.dll + dwLocalPlayer
                int dwWeaponIndex = mem.ReadInt(wLocalPlayer + dwActiveWeapon) & 0xFFF; // read wLocalPlayer + dwActiveweapon & 0xFFF.
                int dwWeaponEntity = mem.ReadInt((cDLL + dwEntityList + dwWeaponIndex * 0x10) - 0x10); // read client.dll + dwWeaponIndex * 0x10 - 0x10 // gets the weapon entity position.
                int weaponID = mem.ReadInt(dwWeaponEntity + dwWeaponID); // Reads the entity position and weapon ID.

                if (localPlayer != enemyCrosshairTeam && enemyInCrosshairHealth > 0 && enemyCrosshairTeam != localTeam) // If localPlayer is not enemyCrosshairTeam && enemyincrosshairhealth is greater than 0, and enemyincrosshair is not on the same team
                {
                    //Acts as a boolean function, isn't triggered once a loop, but seems to be triggered and stays true on button press.
                    if (GetAsyncKeyState((ushort)WindowsVirtualKey.VK_XBUTTON2) != 0 || GetAsyncKeyState((ushort)WindowsVirtualKey.VK_XBUTTON1) != 0) // Determine if hotkey was pressed.
                    {
                        //Check for knife/Grenade/Etc.
                        if (weaponID != (int)WeaponNames.Bayonet || weaponID != (int)WeaponNames.Butterfly || weaponID != (int)WeaponNames.C4 || weaponID != (int)WeaponNames.CTKnife || weaponID != (int)WeaponNames.Decoy || weaponID != (int)WeaponNames.Falchion || weaponID != (int)WeaponNames.Flasbang || weaponID != (int)WeaponNames.FlipKnife || weaponID != (int)WeaponNames.GutKnife || weaponID != (int)WeaponNames.HEGrenade || weaponID != (int)WeaponNames.Huntsman || weaponID != (int)WeaponNames.Incendiary || weaponID != (int)WeaponNames.Karambit || weaponID != (int)WeaponNames.M9Bayo || weaponID != (int)WeaponNames.Molotov || weaponID != (int)WeaponNames.Smoke || weaponID != (int)WeaponNames.TKnife || weaponID != (int)WeaponNames.Zues)
                        {
                            System.Threading.Thread.Sleep(dwDelay); // Delay
                            mouse_event(0x002, 0, 0, 0, (System.UIntPtr)0); // Click
                            mouse_event(0x004, 0, 0, 0, (System.UIntPtr)0); // Release
                        }
                    }
                }
            }
        }
    }
}