-- CONFIG
ZE_DEFAULT_NUMBER_OF_PLAYERS = 1
ZE_ACCESS_TO_IGNORE_ARENA = 3
-- POSITIONS
ZE_blockEnterItemPosition = {x= 32391, y=31916, z=7}
ZE_enterPosition = {x = 32129, y = 32242, z = 7}
ZE_kickPosition = {x=32386, y=31913, z=7}
ZE_spawnFromPosition = {x = 32113, y = 32230, z = 7}
ZE_spawnToPosition = {x = 32147, y = 32253, z = 7}
-- ITEM IDS
ZE_blockEnterItemID = 2700
-- STORAGES
-- - player
ZE_isOnZombieArea = 39970
-- - global
ZE_STATUS = 39970 -- =< 0 - off, 1 - waiting for players, 2 - is running
ZE_PLAYERS_NUMBER = 39971
ZE_ZOMBIES_TO_SPAWN = 39972
ZE_ZOMBIES_SPAWNED = 39973

-- FUNCTION

function setZombiesEventPlayersLimit(value)
    doSetStorage(ZE_PLAYERS_NUMBER, value)
end

function getZombiesEventPlayersLimit()
    return getStorage(ZE_PLAYERS_NUMBER)
end

function addPlayerToZombiesArea(cid)
    doSendMagicEffect(getThingPosition(cid), CONST_ME_TELEPORT)
    doTeleportThing(cid, ZE_enterPosition, true)
    doSendMagicEffect(getThingPosition(cid), CONST_ME_TELEPORT)
    if(getPlayerAccess(cid) < ZE_ACCESS_TO_IGNORE_ARENA) then
        setPlayerZombiesEventStatus(cid, os.time())
    end
end

function kickPlayerFromZombiesArea(cid)
    doSendMagicEffect(getThingPosition(cid), CONST_ME_TELEPORT)
    doTeleportThing(cid, ZE_kickPosition, true)
    doSendMagicEffect(getThingPosition(cid), CONST_ME_TELEPORT)
    setPlayerZombiesEventStatus(cid, 0)
end

function getPlayerZombiesEventStatus(cid)
    return getCreatureStorage(cid, ZE_isOnZombieArea)
end

function setPlayerZombiesEventStatus(cid, value)
    doCreatureSetStorage(cid, ZE_isOnZombieArea, value)
end

function getZombiesEventPlayers()
    local players = {}
    for i, cid in pairs(getPlayersOnline()) do
        if(getPlayerZombiesEventStatus(cid) > 0) then
            table.insert(players, cid)
        end
    end
    return players
end

function getZombiesCount()
    return getStorage(ZE_ZOMBIES_SPAWNED)
end

function addZombiesCount()
    doSetStorage(ZE_ZOMBIES_SPAWNED, getStorage(ZE_ZOMBIES_SPAWNED)+1)
end

function resetZombiesCount()
    doSetStorage(ZE_ZOMBIES_SPAWNED, 0)
end

function getZombiesToSpawnCount()
    return getStorage(ZE_ZOMBIES_TO_SPAWN)
end

function setZombiesToSpawnCount(count)
    doSetStorage(ZE_ZOMBIES_TO_SPAWN, count)
end

function addZombiesEventBlockEnterPosition()
    if(getTileItemById(ZE_blockEnterItemPosition, ZE_blockEnterItemID).uid == 0) then
        doCreateItem(ZE_blockEnterItemID, 1, ZE_blockEnterItemPosition)
    end
end

function removeZombiesEventBlockEnterPosition()
    local item = getTileItemById(ZE_blockEnterItemPosition, ZE_blockEnterItemID)
    if(item.uid ~= 0) then
        doRemoveItem(item.uid)
    end
end

function spawnNewZombie()
    local posx = {}
    local posy = {}
    local posz = {}
    local pir = {}
    for i=1, 5 do
        local posx_tmp = math.random(ZE_spawnFromPosition.x ,ZE_spawnToPosition.x)
        local posy_tmp = math.random(ZE_spawnFromPosition.y ,ZE_spawnToPosition.y)
        local posz_tmp = math.random(ZE_spawnFromPosition.z ,ZE_spawnToPosition.z)
        local pir_tmp = 0
        local spec = getSpectators({x=posx_tmp, y=posy_tmp, z=posz_tmp}, 3, 3, true)
        if(spec and #spec > 0) then
            for z, pid in pairs(spec) do
                if(isPlayer(pid)) then
                    pir_tmp = pir_tmp + 1
                end
            end
        end
        posx[i] = posx_tmp
        posy[i] = posy_tmp
        posz[i] = posz_tmp
        pir[i] = pir_tmp
    end
    local lowest_i = 1
    for i=2, 5 do
        if(pir[i] < pir[lowest_i]) then
            lowest_i = i
        end
    end
    local ret = (type(doCreateMonster("Snorlax", {x=posx[lowest_i], y=posy[lowest_i], z=posz[lowest_i]}, true, true, true)) == 'number')
    if(ret) then
        addZombiesCount()
    end
    return ret
end