-- PART 1: Convert V-Ray HDRI maps to Standard Bitmap Textures
for b in (getClassInstances VrayHDRI) do (
    -- Check that the map has a valid file path before converting
    if (b.HDRIMapName != undefined) and (b.HDRIMapName != "") do (
        -- Create a new standard Bitmap
        local new_bmp = BitmapTexture()
        
        -- Transfer the file path and the original name
        new_bmp.filename = b.HDRIMapName
        new_bmp.name = b.name
        
        -- Globally replace the V-Ray HDRI with the new BitmapTexture
        replaceInstances b new_bmp
    )
)

-- PART 2: Convert V-Ray materials to Standard materials
for each in (getclassinstances VRayMtl) do (
    -- Create a new Standard material and keep the original name
    local stdMat = StandardMaterial()
    stdMat.name = each.name 
	
    -- Diffuse Map
    if (isProperty each "texmap_diffuse") then (
        stdMat.diffusemap = each.texmap_diffuse
    )
    
    -- Bump Map
    if (isProperty each "texmap_bump") then (
        stdMat.bumpMap = each.texmap_bump
    )
    
    -- Opacity Map
    if (isProperty each "texmap_opacity") then (
        stdMat.opacityMap = each.texmap_opacity
    )
    
    -- Reflection Map
    if (isProperty each "texmap_reflection") then (
        stdMat.reflectionMap = each.texmap_reflection
    )
    
    -- Refraction Map
    if (isProperty each "texmap_refraction") then (
        stdMat.refractionMap = each.texmap_refraction
    )
    
    -- Displacement Map
    if (isProperty each "texmap_displacement") then (
        stdMat.displacementMap = each.texmap_displacement
    )
    
    -- Self-Illumination Map
    if (isProperty each "texmap_self_illumination") then (
        stdMat.selfIllumMap = each.texmap_self_illumination
    )

    -- Globally replace the V-Ray material with the new Standard material
    replaceinstances each stdMat
)