MARKER_DRAW_DISTANCE = 3000
MARKER_FADE_DISTANCE = MARKER_DRAW_DISTANCE-10
MARKER_REFRESH_TIMEOUT = 500 -- czas w ms co ile wyszukuje markery w poblizu 
tick_rotation=getTickCount()
local markers = {}
local textures = {}
local iconSize = Vector2(0.8, 0.8)

function findRotation(from_x, from_y, to_x, to_y)
    local result = -math.deg(math.atan2(to_x - from_x, to_y - from_y))
    
    return result < 0 and result + 360 or result
end

local thisTick = getTickCount()

local font = exports['lrpg-markery']:dxGetFont('light') or 'default-bold'

function renderCustomMarkers()
    local cx, cy, cz = getCameraMatrix()
    local rx, ry, rz = getElementRotation(getCamera())
    local posPlayerX, posPlayerY, posPlayerZ=getElementPosition(localPlayer)
    local pX,pY,pZ=getElementRotation(localPlayer)
    --local tick = math.abs(getTickCount() % 2500 - 2500/2) / 2500/2
    local tick = interpolateBetween(0,0,0,0.3,0,0, (getTickCount()-thisTick)/2500, "SineCurve")
    
    for i, marker in ipairs(markers) do 
        if isElement(marker) then
            local x, y, z = getElementPosition(marker)
            local radius = getMarkerSize(marker) or 3 
            local color = {getMarkerColor(marker)} or {255, 255, 255, 255}
            local icon = getElementData(marker, "icon") or "marker"
            local dist = getDistanceBetweenPoints3D(cx, cy, cz, x, y, z)
            local progress = (dist-MARKER_FADE_DISTANCE)/(MARKER_DRAW_DISTANCE-MARKER_FADE_DISTANCE)
            color[4] = math.max(0, math.min(255 - (255*progress), 255))
            
            if isOnScreen(x, y, z, radius*0.25) and color[4] > 0 then

                local i1, i2=interpolateBetween(0,0,0,360,0,0,(getTickCount()-tick_rotation)/1250, "OutQuad")
                if (getTickCount()-tick_rotation) > 1250 then 
                    tick_rotation=getTickCount()
                end 
                drawTransformedMaterial(textures[icon.."_icon"], x, y, z+iconSize.y*1.5+tick, pX-90, pY, pZ, iconSize.x-0.3, iconSize.y-0.3, color, 0, 0, 0, posPlayerX, posPlayerY, posPlayerZ)
                
                local lightColor = color 
                --lightColor[4] = (lightColor[4]*0.8) - ((lightColor[4]*0.3)*tick)
                lightColor[4] = lightColor[4] - (tick*10)

                drawTransformedMaterial(textures.marker_ring1, x, y, z+0.1, 0, 0, i1, radius+0.4, radius+0.4, lightColor, 0, 0, 0, 0, 0, 0)
                --drawTransformedMaterial(textures.marker_ring2, x, y, z+0.1, 0, 0, i2, radius+0.4, radius+0.4, lightColor, 0, 0, 0, 0, 0, 0)
            end

            if getElementData(marker, 'marker:text') and dist < 20 then 
                local sx,sy = getScreenFromWorldPosition(x,y,z + 0.4*1.5+tick)
                if sx and sy then 
                    local alpha = ((20/255 - dist/255) * 255)/15 * 255
                    local size = ((20/1 - dist/1) * 1)/15 * 1

                    dxDrawText(getElementData(marker, 'marker:text') or '',sx,sy,sx,sy,tocolor(255,255,255,alpha ),math.max(0.1,size),font,'center','center',false,false,false,false,false)
                end 
            end 

        end
    end
end 

function getNearbyMarkers()
    local cx, cy, cz = getCameraMatrix()
    if font == 'default-bold' then 
        font = dxCreateFont("light.ttf", 15)
    end 
    markers = {}
    for k, v in ipairs(getElementsWithinRange(cx,cy,cz, 75, 'marker')) do 
        if getMarkerType(v) ~= 'corona' then 
            local x, y, z = getElementPosition(v)
            if getDistanceBetweenPoints3D(x, y, z, cx, cy, cz) < MARKER_DRAW_DISTANCE*2 then 

                local r,g,b=getMarkerColor(v)
                setMarkerColor(v, r,g,b, 0)

                table.insert(markers, v)
            end
        end 
    end
end 

addEventHandler("onClientResourceStart", resourceRoot, function()
    textures.marker_icon = dxCreateTexture("images/marker.png", "argb",false,'wrap')
    textures.get_car_icon = dxCreateTexture("images/icons/get_car.png", "argb",false,'wrap')
    textures.store_car_icon = dxCreateTexture("images/icons/store_car.png", "argb",false,'wrap')
    textures.station_lpg_icon = dxCreateTexture("images/icons/station_lpg.png", "argb",false,'wrap')
    textures.marker_ring1 = dxCreateTexture('images/marker_1.png',"argb",false,'wrap')
    textures.marker_ring2 = dxCreateTexture('images/marker_2.png',"argb",false,'wrap')

    textures.light = dxCreateTexture("images/light.png")

    setTimer(getNearbyMarkers, MARKER_REFRESH_TIMEOUT, 0)
    addEventHandler("onClientRender", root, renderCustomMarkers)
end)

addEventHandler('onClientResourceStop',resourceRoot,function()
    for i,v in ipairs(getElementsByType('marker')) do 
        local r,g,b = getMarkerColor(v)
        setMarkerColor(v, r,g,b,255)
    end 
end) 

    setTimer(getNearbyMarkers, MARKER_REFRESH_TIMEOUT, 0)
    addEventHandler("onClientRender", root, renderCustomMarkers)
end)