client.lua

function applySkin(commandName, vehName)

    vehName = string.lower(vehName)

    if vehName == "slamvan" or vehName == "savanna" or vehName == "blade" or vehName == "sultan" or vehName == "jester" or vehName == "elegy" or vehName == "flash" or vehName == "uranus" or vehName == "tornado" or vehName == "broadway" or vehName == "remington" or vehName == "rustler" or vehName == "maverick" or vehName == "hydra" then

        texture = dxCreateTexture("shader.png")
        shader, tec = dxCreateShader("shaderReplacement.fx")

        if not shader then
            outputChatBox("Could not create shader.")
            destroyElement(texture)
            return
        elseif not texture then
            outputChatBox("Loading texture failed.")
            destroyElement(shader)
            tec = nil
            return
        else
            if vehName == "slamvan" or vehName == "savanna" or vehName == "blade" then
                engineApplyShaderToWorldTexture(shader, "#emap" .. vehName.. "92body128")
            end
            if vehName == "sultan" or vehName == "jester" then
                engineApplyShaderToWorldTexture(shader, "#emap" .. vehName.. "body256")
            end
            if vehName == "elegy" then
                engineApplyShaderToWorldTexture(shader, "#emap" .. vehName.. "body128")
            end
            if vehName == "flash" or vehName == "uranus" then
                engineApplyShaderToWorldTexture(shader, "#emap" .. vehName.. "body256")
            end
            if vehName == "tornado" or vehName == "broadway" then
                engineApplyShaderToWorldTexture(shader, "remap" .. vehName.. "92body128")
            end
            if vehName == "remington" then
                engineApplyShaderToWorldTexture(shader, "remap" .. vehName.. "256body")
            end
            if vehName == "hydra" then
                engineApplyShaderToWorldTexture(shader, vehName.. "body256")
            end
            if vehName == "rustler" then
                engineApplyShaderToWorldTexture(shader, vehName.. "92body256")
            end
            if vehName == "maverick" then
                engineApplyShaderToWorldTexture(shader, vehName.. "92body128")
            end
            dxSetShaderValue(shader, "gTexture", texture)
            outputChatBox("Skin applied on " .. vehName .. ".")
            return
        end
        else
            outputChatBox(vehName .. " is not a valid vehicle name.")
        end
end

addEventHandler("onClientResourceStart", getRootElement(),
    function()
        outputChatBox("VehMod loaded, use \"/applyskin <VehicleName>\" to apply shader.png to the vehicle.")
    end
)
addCommandHandler ("applyskin", applySkin)