/*
    ZNPC: Zombified Non-Player Characters [v1.0] by Weponz
*/
#define FILTERSCRIPT
#include <a_samp>//Credits: SA:MP Team
#include <rnpc>//Credits: Mauzen

#define MAX_ZOMBIES 50//OPTIONAL: Define the max amount of zombies to spawn here. (Default: 50)

#define ZOMBIE_NAME "Zombie[%i]"//OPTIONAL: Define the name of zombies here. (Default: Zombie[%i])
#define ZOMBIE_HEALTH 50//OPTIONAL: Define the full amount of health for zombies here. (Default: 50%)
#define ZOMBIE_SKIN 162//OPTIONAL: Define the skin id for zombies here. (Default: 162)
#define ZOMBIE_COLOR 0xFF0000FF//OPTIONAL: Define the color of zombies here. (Default: Red)
#define ZOMBIE_DETECT 25//OPTIONAL: Define the minimum detect range for zombies here. (Default: 25 Metres)
#define ZOMBIE_DAMAGE 25//OPTIONAL: Define the damage amount for zombies here. (Default: 25%)

forward OnZombieAttack();
forward OnZombieRoam();

forward ResetDetectRange(playerid);

new GetZombieVictimID[MAX_ZOMBIES];

new GetVictimDetectRange[MAX_PLAYERS];
new GetVictimResetTimer[MAX_PLAYERS];
new GetVictimTimerStatus[MAX_PLAYERS];

new Float:ZombieSpawns[3][3] =//REQUIRED: Change [2] to the amount of spawn locations.
{
    {1642.0972, -2332.3430, -2.6797},//REQUIRED: Add zombie spawn locations here.
    {1685.3428, -2333.3137, 13.5469},//REQUIRED: Add zombie spawn locations here.
    {1616.1416, -2276.0334, 13.5140}//REQUIRED: Add zombie spawn locations here.
};

stock GetZombieVictim(npcid)
{
    for(new playerid = 0; playerid < MAX_PLAYERS; playerid++)
    {
        if(!IsPlayerNPC(playerid) && IsPlayerConnected(playerid))
        {
            new Float:x, Float:y, Float:z;
            GetPlayerPos(npcid, x, y, z);
            if(IsPlayerInRangeOfPoint(playerid, GetVictimDetectRange[playerid], x, y, z) && GetPlayerState(playerid) == PLAYER_STATE_ONFOOT && GetPlayerInterior(playerid) == 0 && GetPlayerVirtualWorld(playerid) == 0) return playerid;
        }
    }
    return INVALID_PLAYER_ID;
}

public OnFilterScriptInit()
{
    RNPC_SetUpdateRate(80);

    MapAndreas_Init(MAP_ANDREAS_MODE_NOBUFFER);

    new count = 0;
    for(new npcid = 0; npcid < MAX_ZOMBIES; npcid++)
    {
        new name[24];
        format(name, sizeof(name), ZOMBIE_NAME, npcid + 1);
        ConnectRNPC(name);
        count++;
    }
    printf("Number of zombies created: %i", count);

    SetTimer("OnZombieAttack", 1000, true);
    SetTimer("OnZombieRoam", 10000, true);
    return 1;
}

public OnPlayerSpawn(playerid)
{
    ApplyAnimation(playerid, "BOMBER", "null", 0, 0, 0, 0, 0, 1);
    ApplyAnimation(playerid, "PED", "null", 0, 0, 0, 0, 0, 1);

    if(IsPlayerNPC(playerid))
    {
        new spawn = random(sizeof(ZombieSpawns));
        SetPlayerPos(playerid, ZombieSpawns[spawn][0], ZombieSpawns[spawn][1], ZombieSpawns[spawn][2]);

        SetRNPCHealth(playerid, ZOMBIE_HEALTH);
        SetPlayerSkin(playerid, ZOMBIE_SKIN);
        SetPlayerColor(playerid, ZOMBIE_COLOR);

        RNPC_SetShootable(playerid, 1);
        RNPC_ToggleVehicleCollisionCheck(playerid, 1);

        GetZombieVictimID[playerid] = INVALID_PLAYER_ID;
        return 1;
    }
    else
    {
        GetVictimDetectRange[playerid] = ZOMBIE_DETECT;
        GetVictimTimerStatus[playerid] = 0;
    }
    return 1;
}

public OnPlayerDeath(playerid, killerid, reason)
{
    if(IsPlayerNPC(killerid))
    {
        ApplyAnimation(killerid, "BOMBER", "BOM_Plant", 4.1, 0, 1, 1, 1, 0, 1);
        SetRNPCHealth(killerid, ZOMBIE_HEALTH);
        return SendDeathMessage(killerid, GetZombieVictimID[killerid], reason);
    }
    return 1;
}

public OnRNPCDeath(npcid, killerid, reason)
{
    SendDeathMessage(killerid, npcid, reason);
    ApplyAnimation(npcid, "PED", "BIKE_fall_off", 4.1, 0, 1, 1, 1, 0, 1);
    RespawnRNPC(npcid);
    return 1;
}

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if(!IsPlayerNPC(playerid))
    {
        if(newkeys & KEY_FIRE)
        {
            if(GetPlayerWeapon(playerid) >= 22 && GetPlayerWeapon(playerid) <= 38)
            {
                GetVictimDetectRange[playerid] = (ZOMBIE_DETECT * 4);
                if(GetVictimTimerStatus[playerid] == 1) { KillTimer(GetVictimResetTimer[playerid]); }
                GetVictimTimerStatus[playerid] = 1;
                GetVictimResetTimer[playerid] = SetTimerEx("ResetDetectRange", 5000, false, "i", playerid);
            }
        }
        else if(newkeys & KEY_SPRINT && GetVictimTimerStatus[playerid] == 0)
        {
            GetVictimDetectRange[playerid] = (ZOMBIE_DETECT * 2);
            GetVictimTimerStatus[playerid] = 1;
            GetVictimResetTimer[playerid] = SetTimerEx("ResetDetectRange", 5000, false, "i", playerid);
        }
    }
    return 1;
}

public OnPlayerUpdate(playerid)
{
    if(!IsPlayerNPC(playerid))
    {
        if(GetPlayerSpecialAction(playerid) == SPECIAL_ACTION_DUCK && GetVictimTimerStatus[playerid] == 0)
        {
            GetVictimDetectRange[playerid] = (ZOMBIE_DETECT / 4);
            GetVictimTimerStatus[playerid] = 1;
            GetVictimResetTimer[playerid] = SetTimerEx("ResetDetectRange", 5000, false, "i", playerid);
        }
    }
    return 1;
}

public OnZombieAttack()
{
    for(new npcid = 0; npcid < MAX_ZOMBIES; npcid++)
    {
        if(IsPlayerNPC(npcid))
        {
            if(GetRNPCHealth(npcid) > 0)
            {
                new victim = GetZombieVictim(npcid), Float:x, Float:y, Float:z, Float:health;
                GetPlayerPos(npcid, x, y, z);
                if(victim != INVALID_PLAYER_ID)
                {
                    if(IsPlayerInRangeOfPoint(victim, GetVictimDetectRange[victim], x, y, z))
                    {
                        GetZombieVictimID[npcid] = victim;

                        if(IsPlayerInRangeOfPoint(victim, 1, x, y, z))
                        {
                            RNPC_CreateBuild(npcid, PLAYER_RECORDING_TYPE_ONFOOT);
                            RNPC_AddPause(100);
                            RNPC_SetKeys(KEY_FIRE);
                            RNPC_AddPause(100);
                            RNPC_SetKeys(0);
                            RNPC_FinishBuild();
                            RNPC_StartBuildPlayback(npcid);

                            GetPlayerHealth(victim, health);
                            SetPlayerHealth(victim, health - ZOMBIE_DAMAGE);
                            continue;
                        }
                        GetPlayerPos(victim, x, y, z);

                        MoveRNPC(npcid, x, y, z, RNPC_SPEED_RUN, 1);
                    }
                }
            }
        }
    }
    return 1;
}

public OnZombieRoam()
{
    for(new npcid = 0; npcid < MAX_ZOMBIES; npcid++)
    {
        if(IsPlayerNPC(npcid))
        {
            if(GetRNPCHealth(npcid) > 0)
            {
                new victim = GetZombieVictim(npcid), Float:x, Float:y, Float:z;
                GetPlayerPos(npcid, x, y, z);
                if(victim == INVALID_PLAYER_ID)
                {
                    new pos = random(4);
                    if(pos == 0) { x = x + 100.0; }
                    else if(pos == 1) { x = x - 100.0; }
                    else if(pos == 2) { y = y + 100.0; }
                    else if(pos == 3) { y = y - 100.0; }

                    GetZombieVictimID[npcid] = INVALID_PLAYER_ID;

                    RNPC_SetKeys(0);

                    MoveRNPC(npcid, x, y, z, RNPC_SPEED_WALK, 1);
                }
            }
        }
    }
    return 1;
}

public ResetDetectRange(playerid)
{
    if(GetPlayerSpecialAction(playerid) == SPECIAL_ACTION_DUCK)
    {
        GetVictimDetectRange[playerid] = (ZOMBIE_DETECT / 4);
        GetVictimTimerStatus[playerid] = 1;
        GetVictimResetTimer[playerid] = SetTimerEx("ResetDetectRange", 5000, false, "i", playerid);
        return 1;
    }

    GetVictimTimerStatus[playerid] = 0;
    GetVictimDetectRange[playerid] = ZOMBIE_DETECT;
    return 1;
}