Category: Blender Addons

class Mainpanel(bpy.types.Panel):
    """A Custom Panel in the Viewport Toolbar"""
    
    bl_label = "UE Tools"
    bl_space_type = 'VIEW_3D'
    bl_region_type = 'TOOLS'        
    #bl_category = 'Tools'
    bl_category = 'UE Tools'

Firt remove the “#” symbol at line 1257 on “#bl_category = ‘Tools'” , and then put the symbol on line 1258 on “bl_category = ‘UE Tools'”.You shoul see it like that:

class Mainpanel(bpy.types.Panel):
    """A Custom Panel in the Viewport Toolbar"""
    
    bl_label = "UE Tools"
    bl_space_type = 'VIEW_3D'
    bl_region_type = 'TOOLS'        
    bl_category = 'Tools'
    #bl_category = 'UE Tools'

• Set UE Scale: If you press this button, The scene will change to be in centimeters with all necessary parameters configured to not have problems with the camera.

• Scale Selected Objects: If you have this box checked, by pressing the “Set UE Scale” button, the Scale will be configured correctly also for the selected objects.

• Set Collision Pivots: By pressing this button, is posible to set up the pivot point for multiple collision meshes in 1 click.

What are collision meshes and how work the “Set collisions Pivot” Button?I recommend take a quick look on the Unreal Engine documentation. As you can see, collision meshes must have a specific name

So we can see that, by rename the collision meshes with the corresponding Prefix (UCX) and suffix (in case of multiple meshes), you will assign the collisions to a particular object.

If in your scene you have some collision meshes assigned to some objects, just by selecting the objects and pressing the “Set Collision Pivots” the addon will set up all pivot points on the collision meshes, according to the object to which they are assigned

• Base name: Here you can choose the basis for the name that will be used for rename, You have several options. Use a custom name (this option is used to rename objects collision), use the name of the selected objects, use the object data name of the selected objects, or use the name of the first material (this last option is not used but as the code base that I utilize include this option, I have also decided to include in this addon.

• Data blocks to rename: In this section, you can choose in what type of data you want to rename. The options are: The name of the object, the object data name , or the name of the first material

• Prefix: In this section you can define a prefix to add to the base name, when you rename the objects. If you check the “Collider” box, automatically the “UCX_” prefix will be added, plus a numeric suffix supported in Unreal engine (Blender adds suffixes in this format .000, .001 etc. .. Unreal Engine need in that other _000 , _001, to detect collision objects). You can also check the “Custom Prefix” box if you want to add a custom prefix. In this case, no suffix is ??added. And finally, you can choose in which data type the prefix will be added.

• Pivot To Center: This option is very useful. Allows multiple objects in the same layer, and you can select multiple objects at once and will be exported individually in separate files, with the pivot point properly in place. With this option enabled, you don’t need  to have the object for export at the center of the scene and you will be able to export multiple objects at once

• Export Collision: Self Explanatory. If you have some collision meshes assigned to the objects selected when you hit the export button, will be exported the collision meshes along the selected objects.

Pressing the button “FBX Export”, at the end of the panel, the selected objects will be exported