Updated blender exporter to work with version 2.80

blender_addon/io_symmetry_exp/__init__.py

@@ -3,31 +3,120 @@ bl_info = {
     "description": "Export to a format that can be read by Symmetry",
     "author": "Shariq Shah",
     "version": (0, 1),
-    "blender": (2, 79, 0),
+    "blender": (2, 80, 0),
     "location": "File > Export > Export to Symmetry",
     "category": "Import-Export"
 }
 
-# Ensure that we reload our dependencies if we ourselves are reloaded by Blender
-if "bpy" in locals():
-    import imp;
-    if "exporter" in locals():
-        imp.reload(exporter);
-
 import bpy
-from . import exporter
+import bmesh
+import struct
+from math import radians
+from bpy_extras.io_utils import ExportHelper
+
+class ExportSymmetry(bpy.types.Operator, ExportHelper):
+    bl_idname       = "export_symmetry.symbres";
+    bl_label        = "Symmetry Exporter";
+    bl_options      = {'PRESET'};
+    filename_ext    = ".symbres";
+    
+    def execute(self, context):
+        scene = context.scene
+        view_layer = bpy.context.view_layer
+        activeObject = view_layer.objects.active
+        #activeObject = scene.objects.active
+
+        if not activeObject or str(activeObject.type) != 'MESH':
+            raise NameError("Cannot export : Object %s is not a mesh" % activeObject)
+
+        print("Exporting : " + activeObject.name)
+
+        # Rotate -90 deg on x axis to compensate for blender's different orientation
+        activeObject.rotation_euler[0] = radians(-90)
+        bpy.ops.object.transform_apply(location = True, scale = True, rotation = True)
+        
+        mesh = activeObject.to_mesh(preserve_all_data_layers=True)
+        bm = bmesh.new()
+        bm.from_mesh(mesh)
+        bmesh.ops.triangulate(bm, faces = bm.faces)
+
+        indices  = []
+        vertices = []
+        normals  = []
+        uvs      = []
+
+        if len(mesh.uv_layers) > 0:
+            uv_layer = bm.loops.layers.uv.values()[0]
+            index = 0;
+            for face in bm.faces:
+                for loop in face.loops:
+                    uv = loop[uv_layer].uv
+                    uv.y = 1.0 - uv.y
+                    vert = loop.vert
+                    vertices.append(vert.co.to_tuple())
+                    normals.append(vert.normal.to_tuple())
+                    uvs.append(uv.to_tuple())
+                    indices.append(index)
+                    index += 1
+        else:
+            raise NameError("No uv layers detected. Did you forget to unwrap?")
+
+        bm.free()
+        del bm
+
+        # Reset object's previous rotation
+        activeObject.rotation_euler[0] = radians(90)
+        bpy.ops.object.transform_apply(location = True, scale = True, rotation = True)
+        
+        file = open(self.filepath, 'bw')
+
+        # Header
+        file.write(struct.pack('i', len(indices)))
+        file.write(struct.pack('i', len(vertices)))
+        file.write(struct.pack('i', len(normals)))
+        file.write(struct.pack('i', len(uvs)))
+
+        print ("Num Indices  : %d" % len(indices))
+        print ("Indices : \n %s \n\n" % str(indices))
+        
+        print ("Num Vertices : %d" % len(vertices))
+        print ("Vertices : \n %s \n\n" % str(vertices))
+
+        print ("Num Normals : %d" % len(normals))
+        print ("Normals : \n %s \n\n" % str(normals))
+
+        print ("Num UVs : %d" % len(uvs))
+        print ("UVs : \n %s \n\n" % str(uvs))
+
+        # Body
+        for index in indices:
+            file.write(struct.pack('i', index))
+            
+        for vertex in vertices:
+            file.write(struct.pack('fff', vertex[0], vertex[1], vertex[2]))
+
+        for normal in normals:
+            file.write(struct.pack('fff', normal[0], normal[1], normal[2]))
+
+        for uv in uvs:
+            file.write(struct.pack('ff', uv[0], uv[1]))
+
+        file.close()
+
+        print("Done!")
+        return {'FINISHED'};
 
 
 def menu_func(self, context):
     self.layout.operator(ExportSymmetry.bl_idname, text="Symbres (.symbres)");
 
 def register():
-    bpy.utils.register_module(__name__);
-    bpy.types.INFO_MT_file_export.append(menu_func);
+    bpy.utils.register_class(ExportSymmetry);
+    bpy.types.TOPBAR_MT_file_export.append(menu_func);
     
 def unregister():
-    bpy.utils.unregister_module(__name__);
-    bpy.types.INFO_MT_file_export.remove(menu_func);
+    bpy.utils.unregister_class(ExportSymmetry);
+    bpy.types.TOPBAR_MT_file_export.remove(menu_func);
 
 
 if __name__ == "__main__":

todo.txt

@@ -1,7 +1,14 @@
 Todo:
+	- Add editor undo for transformation operations
+	- Add simple player fps controls 
+	- Add material export for blender exporter?
+	- Remove flickering from selection in editor
+	- Better, more accurate picking
 	- Allow renaming scene objects in editor
+	- Check if we still need to rotate by 90 degrees when exporting from blender
+	- Command to reload entities only
+	- Command history in console
 	- Bring back debug variable display in editor and allow showing colours, textures etc
-	- Implment/Test reading/writing scene that has a mixture of default entites and entity archetypes
 	- Serialize player, camera properties to file
 	- Implement behaviour that avoids writing normal entities that do not have children or parent to file to avoid inconsistencies when loading them
 	- Change mouse behaviour to lock cursor when looking around so as not to interfere with gui elements when in editor mode
@@ -15,7 +22,6 @@ Todo:
 	- Entity browser window which lists all existing entity types from
 	  where new entities can be creating by dragging and dropping on to
 	  the current scene
-	- Better, more accurate picking
 	- Editor related messages/notifications in the bottom status bar
 	? Disable entity picking when tool is in use or only allow picking when pressing ALT
 	? Maybe remove physics engine and ode all together if we're not using it or investigate the memory leaks that it causes if we're going to keep it?
@@ -344,3 +350,4 @@ Done:
 	* Ensure cameras are not initialized multiple times
 	* Fixed cameras not resizing to current resolution when scene is loaded/reloaded
 	* Added parameter to entity_load command that renames the newly loaded object to whatever the second specified parameter is
+	* Implment/Test reading/writing scene that has a mixture of default entites and entity archetypes