local screenSize = {guiGetScreenSize()}

local mainScale = 1 / 0.3 * screenSize[1] / screenSize[2]
local maxScaleCurve = {{0, 0}, {3, 3}, {13, 5}}

local rendering = true
local font = dxCreateFont( "files/Roboto.ttf", 14, true )


--[[addEventHandler("onClientRender", root, function()
    if rendering then
        for _, car in ipairs(getElementsByType("vehicle")) do
            if types[getVehicleType(car)] and (getElementData(car, "veh:plate") or getVehiclePlateText(car)) then
                if isElementOnScreen(car) and car ~= getPedOccupiedVehicle(localPlayer) then
                    local plateText = getVehiclePlateText(car) or getElementData(car, "veh:plate")
                    local localPosition = {getElementPosition(localPlayer)}
                    local carPosition = {getElementPosition(car)}
                    local worldPosition = {getScreenFromWorldPosition(carPosition[1], carPosition[2], carPosition[3] + 1.3)}
                    local distance = getDistanceBetweenPoints3D(localPosition[1], localPosition[2], localPosition[3], carPosition[1], carPosition[2], carPosition[3])
                    local scale = 2 / (mainScale * (distance / 100))
                    local scale = curving(scale) / 3

                    if distance <= 15 then
                        local plateTextX = dxGetTextWidth(plateText, 1.4, "default-bold", true)

                        if worldPosition[1] and worldPosition[2] and scale then
                            dxDrawRectangleBox(worldPosition[1]-plateTextX/2-5, worldPosition[2]-10*scale, plateTextX+10, 20)
                            dxDrawText(plateText, worldPosition[1]-plateTextX/2, worldPosition[2]-10*scale, plateTextX+10, 20, tocolor(255,255,255), 1.4, "default-bold")
                        end
                    end
                end
            end
        end
    end
end)]]--


local vehicleTable = {}
local vehiclePlate = ''
--local customFont = dxCreateFont('files/icons.ttf',30, false)
local renderVehDistance = 15
local showVehicle = true
local distance = 0

function isBike(veh)
    if getElementType(veh) == "vehicle" then
        if getVehicleType(veh) == "Helicopter" or getVehicleType(veh) == "BMX" or getVehicleType(veh) == "Boat" or getVehicleType(veh) == "Quad" then
            return true
        else
            return false
        end
    else
        return false
    end
end

function refresVehicleTable(element)
    thisTimer1 = setTimer(function()
    if getElementType(element)=="vehicle" and not isBike(element) then
        vehicleTable[element] = {getVehiclePlateText(element)}
    end
    end,1000,0)
end

addEventHandler("onClientElementStreamIn", root, function ()
    local type = getElementType (source)
    if showVehicle then
        if type == "vehicle" then
            refresVehicleTable(source)
            setPlayerNametagShowing (source,false)
        end
    end
end)

addEventHandler( "onClientElementStreamOut", root, function ()
    local type = getElementType (source)
    if showVehicle then
        if type == "vehicle"then
            vehicleTable[source] = nil
            setPlayerNametagShowing (source,false)
        end
    end
end)

function streamAllVehicles()
    for k,v in ipairs(getElementsByType("vehicle")) do
        if isElementStreamedIn(v) then
            refresVehicleTable(v)
        end
    end

end

streamAllVehicles()

addEventHandler("onClientRender", root, function()
    if showVehicle then
        local px,py,pz = getElementPosition(localPlayer)
        for k,value in pairs(vehicleTable) do
            if isElement(k) then
                x,y,z = getElementPosition(k)
                distance = getDistanceBetweenPoints3D(px,py,pz,x,y,z)
                    local plateText = getVehiclePlateText(k) or getElementData(k, "veh:plate")
                    local localPosition = {getElementPosition(localPlayer)}
                    local carPosition = {getElementPosition(k)}
                    local worldPosition = {getScreenFromWorldPosition(carPosition[1], carPosition[2], carPosition[3] + 1.3)}
                    local distance = getDistanceBetweenPoints3D(localPosition[1], localPosition[2], localPosition[3], carPosition[1], carPosition[2], carPosition[3])
                    local scale = 2 / (mainScale * (distance / 100))
                    local scale = curving(scale) / 3
                if (distance <= renderVehDistance and not(getElementAlpha(k)==0) and isLineOfSightClear(px, py, pz, x, y, z, true, false, false, true, false, false, false) and getPedOccupiedVehicle(localPlayer) ~= k) then
                    local progress = distance/renderVehDistance
                    local size = interpolateBetween (0.8,0,0,0.2,0,0,progress,"OutQuad") * 0.9

                    if size >= 3.5 then
                        size = 3.5
                    end

                    if(tostring(getElementType(k))=="vehicle") and vehicleTable[k] then
                        vehiclePlate = vehicleTable[k][1]

                    else
                        vehiclePlate = "#ffffffIsmeretlen"
                    end

                    local vehpanel = { getScreenFromWorldPosition ( x, y, z+2 ) }
                    if vehpanel[1] and vehpanel[2] then
                        --dxDrawText (vehiclePlate:gsub("#%x%x%x%x%x%x", "") , vehpanel[1]+1, vehpanel[2]+1, vehpanel[1]+1, vehpanel[2]+1, tocolor(0,0,0,255), 1.4, "default-bold", "center","center",false,false,false,true )
                        --dxDrawText (vehiclePlate , vehpanel[1], vehpanel[2], vehpanel[1], vehpanel[2], tocolor(255,255,255,255), 1.4, "default-bold", "center","center",false,false,false,true )
                        local plateTextX = dxGetTextWidth(plateText, 1, "font", true)
                        --dxDrawRectangleBox(worldPosition[1]-plateTextX/2-50, worldPosition[2]-10*scale,150, 25)
                        --dxDrawText(vehiclePlate:gsub("#%x%x%x%x%x%x", ""), worldPosition[1]-plateTextX/2-10, worldPosition[2]-10*scale,150, 25, tocolor(0,0,0),1,font)
                        dxDrawRectangleBox(worldPosition[1]-75, worldPosition[2]-10*scale,150, 25)
                        dxDrawText(vehiclePlate:gsub("#%x%x%x%x%x%x", ""), worldPosition[1]-75, worldPosition[2]-10*scale,worldPosition[1]-75+150, worldPosition[2]-10*scale+25, tocolor(0,0,0),1,font,"center","center")
                    end
                end
            end
        end
    end
end, true, "low-5")

--[[function disabledVehicel()
    showVehicle = not showVehicle
end
addCommandHandler("offplate", disabledVehicel)]]--

bindKey("f10", "down", function()
    rendering = not rendering
    showVehicle = not showVehicle
end)


function dxDrawRectangleBox(left, top, width, height)
    dxDrawRectangle(left, top, width, height, tocolor(255,255,255,240))
    dxDrawRectangle(left-1, top, 1, height, tocolor(0,0,0,220))
    dxDrawRectangle(left+width, top, 1, height, tocolor(0,0,0,220))
    dxDrawRectangle(left, top-1, width, 1, tocolor(0,0,0,220))
    dxDrawRectangle(left, top+height, width, 1, tocolor(0,0,0,220))
end

function math.lerp(from, to, alpha)
    return from + (to - from) * alpha
end

function curving(scaleCalc)

    if scaleCalc < maxScaleCurve[1][1] then
        return maxScaleCurve[1][2]
    end

    for idx = 2,#maxScaleCurve do
        if scaleCalc < maxScaleCurve[idx][1] then
            local x1 = maxScaleCurve[idx - 1][1]
            local y1 = maxScaleCurve[idx - 1][2]
            local x2 = maxScaleCurve[idx][1]
            local y2 = maxScaleCurve[idx][2]

            local alpha = (scaleCalc - x1)/(x2 - x1);

            return math.lerp(y1,y2,alpha)
        end
    end

    return maxScaleCurve[#maxScaleCurve][2]
end