Fill doublesidedness and transparency (TODO: figure out additive mapping/emulation) from material settings

addons/io_scene_swbf_msh/msh_material_operators.py

@@ -10,6 +10,8 @@ from math import sqrt
 from bpy.props import BoolProperty, EnumProperty, StringProperty
 from bpy.types import Operator, Menu
 
+from .option_file_parser import MungeOptions
+
 
 import os
 
@@ -33,28 +35,67 @@ class FillSWBFMaterialProperties(bpy.types.Operator):
         slots = sum([list(ob.material_slots) for ob in bpy.context.selected_objects if ob.type == 'MESH'],[])
         mats = [slot.material for slot in slots if (slot.material and slot.material.node_tree)]
 
+        mats_visited = set()
+
         for mat in mats:
+
+            if mat.name in mats_visited or not mat.swbf_msh_mat:
+                continue
+            else:
+                mats_visited.add(mat.name)
+
+            mat.swbf_msh_mat.doublesided = not mat.use_backface_culling
+            mat.swbf_msh_mat.hardedged_transparency = (mat.blend_method == "CLIP")
+            mat.swbf_msh_mat.blended_transparency = (mat.blend_method == "BLEND")
+
+
+            # Below is all for filling the diffuse map/texture_0 fields
+
             try:
                 for BSDF_node in [n for n in mat.node_tree.nodes if n.type == 'BSDF_PRINCIPLED']:
                     base_col = BSDF_node.inputs['Base Color'] 
 
-                    for link in base_col.links :
-                        link_node = link.from_node
+                    stack = []
 
-                        if link_node.type != 'TEX_IMAGE':
-                            continue
+                    texture_node = None
 
-                        tex_name = link_node.image.filepath
-                        print(tex_name)
+                    current_socket = base_col
+                    if base_col.is_linked:
+                        stack.append(base_col.links[0].from_node)
 
-                        i = tex_name.find(".tga")
+                    while stack:
+
+                        curr_node = stack.pop()
+
+                        if curr_node.type == 'TEX_IMAGE':
+                            texture_node = curr_node
+                            break
+                        else:
+                            next_nodes = []
+                            for node_input in curr_node.inputs:
+                                for link in node_input.links:
+                                    next_nodes.append(link.from_node)
+                            # reversing it so we go from up to down
+                            stack += reversed(next_nodes)
+
+
+                    if texture_node is not None:
+
+                        tex_path = texture_node.image.filepath
+
+                        tex_name = os.path.basename(tex_path)
+
+                        i = tex_name.find('.')
                         
                         # Get rid of trailing number in case one is present
                         if i > 0:
-                            tex_name = tex_name[0:i+4]
+                            tex_name = tex_name[0:i] + ".tga"
+
+                        refined_tex_path = os.path.join(os.path.dirname(tex_path), tex_name)
+
+                        mat.swbf_msh_mat.diffuse_map = refined_tex_path 
+                        mat.swbf_msh_mat.texture_0 = refined_tex_path
 
-                        mat.swbf_msh_mat.rendertype = 'NORMAL_BF2'
-                        mat.swbf_msh_mat.diffuse_map = tex_name 
                         break 
             except:
                 # Many chances for null ref exceptions. None if user reads doc section...
@@ -118,7 +159,9 @@ to provide an exact emulation"""
         texture_input_nodes = []
         surface_output_nodes = []
 
-
+        # Op will give up if no diffuse map is present.
+        # Eventually more nuance will be added for different
+        # rtypes
         diffuse_texture_path = mat_props.diffuse_map
         if diffuse_texture_path and os.path.exists(diffuse_texture_path):
 
@@ -147,6 +190,7 @@ to provide an exact emulation"""
             surface_output_nodes.append(tuple(('BSDF', bsdf)))
 
 
+            # Glow (adds another shader output)
             if mat_props.glow:
 
                 emission = material.node_tree.nodes.new("ShaderNodeEmission")
@@ -172,11 +216,49 @@ to provide an exact emulation"""
 
                 surfaces_output = mix
 
+            # Normal/bump mapping (needs more rendertype support!)
+            if "NORMALMAP" in mat_props.rendertype and mat_props.normal_map and os.path.exists(mat_props.normal_map):
+                normalMapTexImage = material.node_tree.nodes.new('ShaderNodeTexImage')
+                normalMapTexImage.image = bpy.data.images.load(mat_props.normal_map)
+                normalMapTexImage.image.alpha_mode = 'CHANNEL_PACKED'
+                normalMapTexImage.image.colorspace_settings.name = 'Non-Color'
+                texture_input_nodes.append(normalMapTexImage)
+
+                options = MungeOptions(mat_props.normal_map + ".option")
+
+                if options.get_bool("bumpmap"):
+
+                    # First we must convert the RGB data to brightness
+                    rgb_to_bw_node = material.node_tree.nodes.new("ShaderNodeRGBToBW")
+                    material.node_tree.links.new(rgb_to_bw_node.inputs["Color"], normalMapTexImage.outputs["Color"])
+
+                    # Now create a bump map node (perhaps we could also use this with normals and just plug color into normal input?)
+                    bumpMapNode = material.node_tree.nodes.new('ShaderNodeBump')
+                    bumpMapNode.inputs["Distance"].default_value = options.get_float("bumpscale", default=1.0)
+                    material.node_tree.links.new(bumpMapNode.inputs["Height"], rgb_to_bw_node.outputs["Val"])
+
+                    normalsOutputNode = bumpMapNode
+
+                else:
+
+                    normalMapNode = material.node_tree.nodes.new('ShaderNodeNormalMap')
+                    material.node_tree.links.new(normalMapNode.inputs["Color"], normalMapTexImage.outputs["Color"])
+
+                    normalsOutputNode = normalMapNode
+                
+                material.node_tree.links.new(bsdf.inputs['Normal'], normalsOutputNode.outputs["Normal"]) 
+
+
 
             output = material.node_tree.nodes.new("ShaderNodeOutputMaterial")
             material.node_tree.links.new(output.inputs['Surface'], surfaces_output.outputs[0]) 
 
 
+
+            # Scrolling
+            # This approach works 90% of the time, but notably produces very incorrect results
+            # on mus1_bldg_world_1,2,3
+
             # Clear all anims in all cases
             if material.node_tree.animation_data:
                 material.node_tree.animation_data.action.fcurves.clear()

addons/io_scene_swbf_msh/option_file_parser.py

@@ -0,0 +1,46 @@
+""" Parses .tga.option and .msh.option files.  Only used with the former as of now. """
+
+import os
+
+
+class MungeOptions:
+
+    def __init__(self, path_to_option_file):
+        self.options = {}
+
+        if os.path.exists(path_to_option_file):
+            with open(path_to_option_file, 'r') as option_file:
+                option_text = option_file.read()
+
+            option_parts = option_text.split()
+
+            current_parameter = ""
+
+            for part in option_parts:
+                if part.startswith("-"):
+                    current_parameter = part[1:]
+                    self.options[current_parameter] = ""
+                elif current_parameter:
+                    current_value = self.options[current_parameter]
+                    # Keep adding to value in case there are vector options
+                    self.options[current_parameter] += part if not current_value else (" " + part)
+
+    def is_option_present(self, param):
+        return param in self.options
+
+    def get_bool(self, param, default=False):
+        return True if param in self.options else default
+
+    def get_float(self, param, default=0.0):
+        if param in self.options:
+            try:
+                result = float(self.options[param]) 
+            except:
+                result = default
+            finally:
+                return result
+        else:
+            return default
+
+    def get_string(self, param, default=""):
+        return self.options.get(param, default)