Generation op will abort if diffuse texture isn't found + options for failing silently or with error message. TODO: found out how to create a pop-up panel with error message that fades away if not interacted with for a couple seconds...

addons/io_scene_swbf_msh/msh_material_operators.py

@@ -11,6 +11,8 @@ from bpy.props import BoolProperty, EnumProperty, StringProperty
 from bpy.types import Operator, Menu
 
 
+import os
+
 
 # FillSWBFMaterialProperties
 
@@ -42,7 +44,8 @@ class FillSWBFMaterialProperties(bpy.types.Operator):
                         if link_node.type != 'TEX_IMAGE':
                             continue
 
-                        tex_name = link_node.image.name
+                        tex_name = link_node.image.filepath
+                        print(tex_name)
 
                         i = tex_name.find(".tga")
                         
@@ -96,24 +99,28 @@ to provide an exact emulation"""
         name = "Material Name", 
         description = "Name of material whose SWBF properties the generated nodes will emulate."
     )
+
+    fail_silently: BoolProperty(
+        name = "Fail Silently"
+    )
     
 
     def execute(self, context):
 
         material = bpy.data.materials[self.material_name]
 
-
         if material and material.swbf_msh_mat:
 
-            material.use_nodes = True
             mat_props = material.swbf_msh_mat
 
-            material.node_tree.nodes.clear()
-
-            bsdf = material.node_tree.nodes.new("ShaderNodeBsdfPrincipled")
-
             diffuse_texture_path = mat_props.diffuse_map
-            if diffuse_texture_path:
+            if diffuse_texture_path and os.path.exists(diffuse_texture_path):
+               
+                material.use_nodes = True
+                material.node_tree.nodes.clear()
+
+                bsdf = material.node_tree.nodes.new("ShaderNodeBsdfPrincipled")
+                
                 texImage = material.node_tree.nodes.new('ShaderNodeTexImage')
                 texImage.image = bpy.data.images.load(diffuse_texture_path)
                 texImage.image.alpha_mode = 'CHANNEL_PACKED'
@@ -127,10 +134,17 @@ to provide an exact emulation"""
                     material.node_tree.links.new(bsdf.inputs['Alpha'], texImage.outputs['Alpha']) 
 
                 material.use_backface_culling = not bool(mat_props.doublesided)
-        
 
-            output = material.node_tree.nodes.new("ShaderNodeOutputMaterial")
-            material.node_tree.links.new(output.inputs['Surface'], bsdf.outputs['BSDF']) 
+                output = material.node_tree.nodes.new("ShaderNodeOutputMaterial")
+                material.node_tree.links.new(output.inputs['Surface'], bsdf.outputs['BSDF']) 
+
+            else:
+
+                # Todo: figure out some way to raise an error but continue operator execution...
+                if self.fail_silently:
+                    return {'CANCELLED'}
+                else:
+                    raise RuntimeError(f"Diffuse texture at path: '{diffuse_texture_path}' was not found.")
 
 
         return {'FINISHED'}

addons/io_scene_swbf_msh/msh_material_properties.py

@@ -297,4 +297,5 @@ class MaterialPropertiesPanel(bpy.types.Panel):
 
         op_props = layout.operator("swbf_msh.generate_material_nodes", text="Generate Nodes")
         op_props.material_name = context.material.name
+        op_props.fail_silently = False
 

addons/io_scene_swbf_msh/msh_material_to_blend.py

@@ -31,7 +31,7 @@ def find_texture_path(folder_path : str, name : str) -> str:
         if os.path.exists(possible_path):
             return possible_path
 
-    return ""
+    return name
 
 
 
@@ -41,7 +41,7 @@ def swbf_material_to_blend(material_name : str, material : Material, folder_path
     
     fill_material_props(material, new_mat.swbf_msh_mat, folder_path)
     
-    bpy.ops.swbf_msh.generate_material_nodes('EXEC_DEFAULT', material_name=new_mat.name) 
+    bpy.ops.swbf_msh.generate_material_nodes('EXEC_DEFAULT', material_name=new_mat.name, fail_silently=True) 
 
     return new_mat    
 
@@ -122,10 +122,10 @@ def _fill_material_props_texture_maps(material, material_properties, folder_path
     t2path = find_texture_path(folder_path, material.texture2)        
     t3path = find_texture_path(folder_path, material.texture3)        
 
-    material_properties.texture_0 = t0path if t0path else material.texture0
-    material_properties.texture_1 = t1path if t1path else material.texture1
-    material_properties.texture_2 = t2path if t2path else material.texture2
-    material_properties.texture_3 = t3path if t3path else material.texture3
+    material_properties.texture_0 = t0path
+    material_properties.texture_1 = t1path
+    material_properties.texture_2 = t2path
+    material_properties.texture_3 = t3path
 
     material_properties.diffuse_map = t0path
     material_properties.distortion_map = t1path