How to Remove Collisions in Blender for Interior Walkthroughs

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Introduction

This tutorial guides you through removing collision objects in Blender to allow walking through interiors of 3D buildings, specifically using the Cold Walker tool and RPF Explorer.

Locating and Exporting Collision Files

  • Open Cold Walker and locate the building model.
  • Use the selection tab to switch the mode to "Collision" to view collision boxes (pink and white).
  • Identify collision files related to doors or walls that block movement.
  • Copy the collision file names and search for them in RPF Explorer.
  • Export the collision files as XML to a dedicated folder for organization.

Importing and Editing Collisions in Blender

  • Import the exported XML collision files into Blender.
  • Use the outline and viewport navigation to locate collision objects.
  • Hide unrelated objects using Shift + click on the eye icon.
  • Delete collision boxes that block passage by selecting and pressing X.

Editing Collision Meshes to Create Doorways

  • Use Edit Mode and enable X-ray and Edge Select modes for better visibility.
  • Use Loop Cuts (Ctrl + R) to create edges around the door area.
  • Delete the face where the door should be to create a hole.
  • Exit Edit Mode and set the collision type to "Bound Poly Mesh" in the Sols panel.
  • Remember to set the collision type after editing to ensure proper functionality.

Exporting Edited Collisions and Testing

  • Select the hierarchy of each collision object before exporting.
  • Export the edited collisions back to XML files.
  • Use RPF Explorer to convert XML files back to YDR format.
  • Place the updated collision files in your server's stream folder.
  • Test in-game to confirm you can walk through the previously blocked door.

Tips and Best Practices

  • Always copy and paste collision file names to avoid errors.
  • Delete all relevant collision files to ensure no invisible barriers remain.
  • Save your work frequently during editing.
  • Be patient and follow each step carefully to avoid issues.
  • Join the community Discord for support and questions.

Conclusion

By following these steps, you can successfully remove or edit collision objects in Blender to create walkable interiors for your 3D environments. Stay tuned for upcoming videos on building interiors and texturing.

Additional Resources

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