#include <amxmodx>
#include <amxmisc>
#include <cstrike>
#include <fun>
#include <vault>

#define MAXCLASSES 5

new PlayerXP[33]
new PlayerLevel[33]

new msgtext

new const LEVELS[6] = {
    100,
    200,
    400,
    800,
    1600,
    3200
}

public plugin_init()
{
	register_plugin("Animal Mod", "1.0", "Invalid")

	register_cvar("sv_animalmod", "1")

	register_event("DeathMsg", "DeathMsg", "a")

	register_cvar("xp_per_kill", "20")

	register_cvar("SaveXP", "1")

	register_event("ResetHUD", "ResetHud", "b")

	msgtext = get_user_msgid("statusText")

	register_clcmd ("say /ps", "ShowHUD")
}

public SaveXP(id)
{
    new authid[32];
    get_user_authid(id,authid,31);

    new vaultkey[64], vaultdata[64];

    //Save their XP
    format(vaultkey,63,"ANIMAL-%s-xp",authid);
    format(vaultdata,63,"%d",PlayerXP[id]);
    set_vaultdata(vaultkey,vaultdata);

    //Save their level
    format(vaultkey,63,"ANIMAL-%s-level",authid);
    format(vaultdata,63,"%d",PlayerLevel[id]);
    set_vaultdata(vaultkey,vaultdata);
}

public LoadXP(id)
{
    new authid[32];
    get_user_authid(id,authid,31);

    new vaultkey[64], vaultdata[64];

     //Load their XP
    format(vaultkey,63,"ANIMAL-%s-xp",authid);
    get_vaultdata(vaultkey,vaultdata,63);
    PlayerXP[id] = str_to_num(vaultdata);

    //Load their level
    format(vaultkey,63,"ANIMAL-%s-level",authid);
    get_vaultdata(vaultkey,vaultdata,63);
    PlayerLevel[id] = str_to_num(vaultdata);
}

public client_connect(id)
{
    //Only load their XP if our SaveXP cvar is 1.
    if(get_cvar_num("SaveXP") == 1) {

         LoadXP(id)

         //Add a message if you want....
         client_print(id, print_chat, "[Animal Mod] XP Loaded!")
         client_print(id, print_chat, "[Animal Mod] You are level %s and %s XP", PlayerLevel[id], PlayerXP[id])
    }
}

public client_disconnect(id)
{
    //Only save their XP if our SaveXP cvar is 1.
    if(get_cvar_num("SaveXP") == 1) {

         SaveXP(id)
    }
}

public DeathMsg() //Note that i only had (), and not (id)
{
    //Lets check if "sv_animalmod" is on. If its off, we'll stop the function.
    if(get_cvar_num("sv_animalmod") == 0) {
         return PLUGIN_HANDLED
    }

    //Now we create a "attacker" varriable. So the XP will be given to the killer, and not all players on the server.
    new attacker = read_data(1)

    //Now the plugin will check if the attacker doesnt have a class, and if he doesnt, the function will stop.

    //Now lets see if the attacker allready has level 6, and doesnt need more XP, and if he is, stop the function.
    //You can remove this if you want, and let the player get as much XP he want. But we wont get more than level 6 anyway.
    if(PlayerLevel[attacker] == 6) {
         return PLUGIN_HANDLED
    }

    //Now we can add XP to the attacker.
    PlayerXP[attacker] += get_cvar_num("XP_per_kill") //Add the amout of XP you have on the "XP_per_kill" cvar.

    //Now we check if the attacker has enough XP for a new level. And if he has, we add it.
    if(PlayerXP[attacker] >= LEVELS[PlayerLevel[attacker]]) {

         //Add his level...
         PlayerLevel[attacker] += 1

         //Now you can make a "congratualtions" message if you want...
         client_print(attacker, print_chat, "[Animal Mod] Congratulations! You are now level %i!", PlayerLevel[attacker])

         //Lets save his XP every time he gets a level incase the server crashes or something. So they wont loose it all.
         if(get_cvar_num("SaveXP") == 1) {

              SaveXP(attacker)
         }


         //Show His New Level on the HUD message.
         //Ill get back to this later...
         ShowHUD(attacker)
    }

    //Show new HUD if you didnt get level too. (To show the new XP)
    //Ill get back to this later...
    ShowHUD(attacker)

    return PLUGIN_CONTINUE
}

public ShowHUD(id)
{
    new HUD[51]

    //This is the stuff that will actually show in game.
    format(HUD, 50, "Level: %i XP: %i", PlayerLevel[id], PlayerXP[id])

    message_begin(MSG_ONE, msgtext, {0,0,0}, id)
    write_byte(0)
    write_string(HUD)
    message_end()
    return
}