local sx,sy = guiGetScreenSize ()
local zoom = 1 
if sx < 1920 then 
    zoom = math.min(2, 1920/sx)
end 

local shader = dxCreateShader("f/shader.fx")
local screenSource = dxCreateScreenSource(sx, sy)
local bind = false

function isCursorOnElement( posX, posY, width, height )
    if isCursorShowing( ) then
        local mouseX, mouseY = getCursorPosition( )
        local clientW, clientH = guiGetScreenSize( )
        local mouseX, mouseY = mouseX * clientW, mouseY * clientH
        if ( mouseX > posX and mouseX < ( posX + width ) and mouseY > posY and mouseY < ( posY + height ) ) then
            return true
        end
    end
    return false
end

local interakcja = {
    swiatla = false,
    zamek = false,
    silnik = false,
    hamulec = false,
}

function gui ()
    if getPedOccupiedVehicle(localPlayer) and bind == true then 
        dxUpdateScreenSource(screenSource)     
        dxSetShaderValue(shader, "screenColor", screenSource)
        dxDrawImage(0,0,sx,sy,shader)
        
        local theVehicle = getPedOccupiedVehicle(localPlayer)
        
        if isVehicleLocked (theVehicle) then 
            interakcja.zamek = true 
        else
            interakcja.zamek = false
        end
        if isElementFrozen(theVehicle) then 
            interakcja.hamulec = true 
        else
            interakcja.hamulec = false
        end
        if getVehicleOverrideLights(theVehicle) == 2 then 
            interakcja.swiatla = true 
        else
            interakcja.swiatla = false
        end
        if getVehicleEngineState(theVehicle) == true then 
            interakcja.silnik = true
        else
            interakcja.silnik = false
        end
        
        --gui
        if interakcja.zamek == true then 
            dxDrawImage(sx/2-50/zoom,sy/2+30/zoom,125/zoom,125/zoom,"i/zamekotw.png",0,0,0,tocolor(255,255,255,255))
        else
            dxDrawImage(sx/2-50/zoom,sy/2+30/zoom,125/zoom,125/zoom,"i/zamek.png",0,0,0,tocolor(255,255,255,255))
        end
        if interakcja.swiatla == true then 
            dxDrawImage(sx/2+100/zoom,sy/2-100/zoom,125/zoom,125/zoom,"i/swiatlootw.png",0,0,0,tocolor(255,255,255,255))
        else
            dxDrawImage(sx/2+100/zoom,sy/2-100/zoom,125/zoom,125/zoom,"i/swiatlo.png",0,0,0,tocolor(255,255,255,255))
        end
        
        if interakcja.silnik == true then 
            dxDrawImage(sx/2-200/zoom,sy/2-100/zoom,125/zoom,125/zoom,"i/silnikotw.png",0,0,0,tocolor(255,255,255,255))
        else
            dxDrawImage(sx/2-200/zoom,sy/2-100/zoom,125/zoom,125/zoom,"i/silnik.png",0,0,0,tocolor(255,255,255,255))
        end
        
        if interakcja.hamulec == true then 
            dxDrawImage(sx/2-50/zoom,sy/2-230/zoom,125/zoom,125/zoom,"i/hamulecotw.png",0,0,0,tocolor(255,255,255,255))
        else
            dxDrawImage(sx/2-50/zoom,sy/2-230/zoom,125/zoom,125/zoom,"i/hamulec.png",0,0,0,tocolor(255,255,255,255))
        end
    elseif bind == true and not getPedOccupiedVehicle(localPlayer) then 
        showCursor(false)
    end
end
--addEventHandler("onClientRender",root,gui)

addEventHandler("onClientClick",root,function(btn,state)
    if btn and getKeyState("mouse1") and state then 
        if bind == true and getPedOccupiedVehicle(localPlayer) then 
            if isCursorOnElement(sx/2-50/zoom,sy/2+30/zoom,125/zoom,125/zoom) then 
                triggerServerEvent("zamek",localPlayer)
            elseif isCursorOnElement(sx/2-200/zoom,sy/2-100/zoom,125/zoom,125/zoom) then 
                triggerServerEvent("silnik",localPlayer)
            elseif isCursorOnElement(sx/2-50/zoom,sy/2-230/zoom,125/zoom,125/zoom) then 
                triggerServerEvent("hamulec",localPlayer) 
            elseif isCursorOnElement(sx/2+100/zoom,sy/2-100/zoom,125/zoom,125/zoom) then
                triggerServerEvent("swiatlo",localPlayer)
            end
        end
    end
end)

bindKey("lshift","down",function()
    local theVehicle = getPedOccupiedVehicle(localPlayer)
    if theVehicle then 
        if bind == false then 
            addEventHandler("onClientRender",root,gui)
            bind = true
            showCursor(true)
        else    
            removeEventHandler("onClientRender",root,gui)
            bind = false
            showCursor(false)
        end
    end
end)

bindKey("lshift","down",function()
    local theVehicle = getPedOccupiedVehicle(localPlayer)
    if theVehicle and getVehicleController(pedzik) == localPlayer then 
        if bind == false then 
            addEventHandler("onClientRender",root,gui)
            bind = true
            showCursor(true)
        else    
            removeEventHandler("onClientRender",root,gui)
            bind = false
            showCursor(false)
        end
    end
end)

getVehicleController(theVehicle) == localPlayer

bindKey("lshift","down",function()
    local theVehicle = getVehicleController(theVehicle) == localPlayer
    if theVehicle and getPedOccupiedVehicleSeat(localPlayer) == 0 then 
        if bind == false then 
            addEventHandler("onClientRender",root,gui)
            bind = true
            showCursor(true)
        else    
            removeEventHandler("onClientRender",root,gui)
            bind = false
            showCursor(false)
        end
    end
end)

bindKey("lshift","down",function()
    if getPedOccupiedVehicleSeat(localPlayer) == 0 then 
        if bind == false then 
            addEventHandler("onClientRender",root,gui)
            bind = true
            showCursor(true)
        else    
            removeEventHandler("onClientRender",root,gui)
            bind = false
            showCursor(false)
        end
    end
end)