Trying to make a police car siren light system

[Yuri6037]

Hi all,

So i'm trying to add a siren lights to my police car, but i got a problem using render.DrawSprite. Indead, i need a math formula that can calculate if i need to place lights in -10 and 10 on Y axis or on X axis relative to vehicle pos.

Here is my code :
VC means vars of my VehicleControler system.

		if ent:GetNWBool("VC_DrawSirenLights") then			
			if(IsValid(ent)) then
				if (ent.SirenSystem == 0) then
					render.SetMaterial(Material("sprites/light_ignorez"))
					render.DrawSprite(ent:GetPos() + Vector(0, 10, 75), 16, 16, Color(0, 0, 255, 255))
				else
					render.SetMaterial(Material("sprites/light_ignorez"))
					render.DrawSprite(ent:GetPos() + Vector(0, -10, 75), 16, 16, Color(255, 0, 0, 255))
				end
			end
			
			if (!timer.Exists("VC_SirenLights")) then
				ent.SirenSystem = 1				
				timer.Create("VC_SirenLights", 1, 0, function()
					if (ent.SirenSystem == 0) then
						ent.SirenSystem = 1						
					else
						ent.SirenSystem = 0						
					end			
				end)
			end
		elseif !ent:GetNWBool("VC_DrawSirenLights") and timer.Exists("VC_SirenLights") then
			timer.Destroy("VC_SirenLights")
		end

Thanks by advance,
Yuri6037.

[TeddyHunter]

Can you post the error you got from the console?

[Yuri6037]

I got no errors...
All is working it's just that i can't find the good position for the rendering. For example if you move on Gmod Y axis it will render correctly. But now move on X axis, and it will not render correctly.

[Acecool]

You need to use vehicle:LocalToWorld( Vector( x, y, z ) ) to turn a localized position into a world-position attached to a vehicle.

Second, don't keep calling Material( ) in your function; set a local ( to the file ) variable outside of any rendering hooks and reference them when setting the material.

[Yuri6037]

Thanks so much now it's working ! The siren is working.

Only one question ; i don't know if anyone can answer, but is there any model that adds Gyros to TDM BMW M5 E60 Car model ?