---
-- coras esp ..  indev


esp = {}

local radius=60 -- limit is 4,096,000 nodes (i.e. 160^3 -> a number > 79 won't work)
local esplimit=30; -- display at most this many waypoints
local espinterval=4 --number of seconds to wait between scans (a lower number can induce clientside lag)
local stpos={x=0,y=0,z=0}

nodes=nlist.get("esp")

local esp_wps={}
local hud2=nil
local hud;
local lastch=0
local wason=false

minetest.register_globalstep(function()
    if not minetest.settings:get_bool("espactive") then
        if #esp_wps > 0 then
            for k,v in pairs(esp_wps) do
                minetest.localplayer:hud_remove(v)
                table.remove(esp_wps,k)
            end
            wason=false
            nlist.hide()
        end
        return
    end
    if not minetest.localplayer then return end
    wason=true

    if os.time() < lastch + espinterval then return end
    lastch=os.time()
    if not minetest.settings:get_bool('nlist_edmode') then nlist.show_list("esp") end
    local pos = minetest.localplayer:get_pos()
	local pos1 = vector.add(pos,{x=radius,y=radius,z=radius})
    local pos2 = vector.add(pos,{x=-radius,y=-radius,z=-radius})
    local epos=minetest.find_nodes_in_area(pos1, pos2, nodes, true)

    for k,v in pairs(esp_wps) do --clear waypoints out of range
        local hd=minetest.localplayer:hud_get(v)
        if not hd or vector.distance(pos,hd.world_pos) > radius + 50 then
            minetest.localplayer:hud_remove(v)
            table.remove(esp_wps,k)
            end
    end

    if epos then
        local ii=0;
        for m,xx in pairs(epos) do -- display found nodes as WPs
            for kk,vv in pairs(xx) do
                if ( ii > esplimit ) then break end
                if vector.distance(stpos,pos) > 200 then
                    stpos=minetest.localplayer:get_pos()
                    if minetest.settings:get_bool("espautostop") then
                        minetest.settings:set("continuous_forward", "false")
                        autofly.aim(vv)
                    end
                end
                ii=ii+1
                table.insert(esp_wps,minetest.localplayer:hud_add({
                    hud_elem_type = 'waypoint',
                    name          = m,
                    text          = "m",
                    number        = 0x00ff00,
                    world_pos     = vv
                    })
                )
            end
       end
    end
end)

if (_G["minetest"]["register_cheat"] ~= nil) then
    minetest.register_cheat("NodeESP", "Render", "espactive")
else
    minetest.settings:set_bool('espactive',true)
end