fn convertCoronaToStandard mat =
(
	-- Make new Standard mat, with original's diffuse map
	newMat = Standardmaterial mapMO:mat.texmapDiffuse
	newMat.name = mat.name
	
	-- diffuse
newMat.diffuse=mat.colorDiffuse
newMat.diffuseMap=mat.texmapDiffuse
newMat.diffuseMapEnable=mat.texmapOndiffuse
newMat.diffuseMapAmount=mat.levelDiffuse


-- opacity
newMat.opacityMap=mat.texmapOpacity
newMat.opacityMapEnable=mat.texmapOnOpacity
newMat.opacityMapAmount=mat.levelOpacity

--bump map
newMat.bumpMap=mat.texmapbump
newMat.bumpMapEnable=mat.texmapOnBump

	showTextureMap newMat on
		return newMat
)
-- Loop through all objects, checking material on each
for obj in geometry do
(
	mat = obj.material

	if (mat != undefined) then 
	(
		if (classof mat == Multimaterial) then 
		(
			-- This is a multi-sub material, so loop through all submaterials
			for i in mat.materialIdList do 
			(
				submat = mat[i]
				if (classof submat == Coronamtl) then 
				(
					replaceinstances submat (convertCoronaToStandard submat)
				)
			)
		)

		else if (classof mat == Coronamtl) then
		(
			-- Regular, non-multi material
			replaceinstances mat (convertCoronaToStandard mat)
		)
	)
)